Monthly Weather Review April 2011 Monthly Weather Review Northern Territory April 2011

The Monthly Weather Review - Northern Territory is produced twelve times each year by the Australian Bureau of Meteorology's Northern Territory Climate Services Centre. It is intended to provide a concise but informative overview of the temperatures, rainfall and significant weather events in Northern Territory for the month. To keep the Monthly Weather Review as timely as possible, much of the information is based on electronic reports. Although every effort is made to ensure the accuracy of these reports, the results can be considered only preliminary until complete quality control procedures have been carried out. Major discrepancies will be noted in later issues. We are keen to ensure that the Monthly Weather Review is appropriate to the needs of its readers. If you have any comments or suggestions, please do not hesitate to contact us: By mail Northern Territory Climate Services Centre Bureau of Meteorology PO Box 40050 Casuarina NT 0811 By telephone (08) 8920 3813 By email [email protected] You may also wish to visit the Bureau's home page, http://www.bom.gov.au. Units of measurement Except where noted, temperature is given in degrees Celsius (°C), rainfall in millimetres (mm), and wind speed in kilometres per hour (km/h). Observation times and periods Each station in Northern Territory makes its main observation for the day at 9 am local time. At this time, the precipitation over the past 24 hours is determined, and maximum and minimum thermometers are also read and reset. In this publication, the following conventions are used for assigning dates to the observations made: Maximum temperatures are for the 24 hours from 9 am on the date mentioned. They normally occur in the afternoon of that day. Minimum temperatures are for the 24 hours to 9 am on the date mentioned. They normally occur in the early morning of that day. Mean temperatures are the average of the daily maximum and daily minimum temperatures. Daily rainfall is for the 24 hours to 9 am on the date mentioned. This means a significant fraction of the rain may have occurred on the previous calendar day. Monthly rainfall is for the period from 9 am on the last day of the previous month to 9 am on the last day of this month. Maximum daily wind gusts are in the 24 hours from midnight to midnight. Climatological values The climatological averages shown in the text and tables are generally long-term means based on observations from the years 1800 to 2009. They are not shown for sites with less than 10 years of record in that time, as they cannot then be calculated reliably. Climatological extremes are generally taken from available observations from the years 1800 to 2009. Copyright © Commonwealth of Australia 2011 This work is copyright. You may download, display, print and reproduce this material in unaltered form only (retaining this notice) for your personal, non-commercial use or use within your organisation. Apart from any use as permitted under the Copyright Act 1968, all other rights are reserved. Requests and inquiries concerning reproduction and rights should be addressed to Commonwealth Copyright Administration, Attorney General’s Department, Robert Garran Offices, National Circuit, Barton ACT 2600 or posted at http://www.ag.gov.au/cca.

Product code IDCKGC12R1. Prepared on 23 May 2011. ISSN 1836-392X Cover photograph Sunset shines on altocumulus near Anningie. Photograph by Gavin Heathertington-Tait, 23 April 2008. Used with permission. If you have a photo you think would make a good cover for the Monthly Weather Review, please contact us at the address above. Monthly Weather Review Northern Territory April 2011

Overview April began with heavy rains and gusty storms Significant weather across the Top End with several stations exceeding their previous record April rainfall Heavy rainfall at Katherine within the first week of the month. The following On the 2nd, Katherine Aviation museum weeks showed signs of the approaching dry measured 83.2 mm which was the wettest April season with cooler nights and fewer storms. This day on record, surpassing the previous record of was the coolest April on record in terms of both 64.0 mm set on the 25th in 1970. Katherine mean temperature and mean minimum Aviation Museum then broke this record again on temperature for the Northern Territory. the 5th when they received 88.4 mm. The average April total rainfall at Katherine is only Extremes in April 2011 38.4 mm. A taste of the dry season Hottest day The official start of the dry season is 1 May, but (Highest daily maximum temperature) the end of April gave a taste of the dry season to 35.8 °C at Victoria River Downs on the 26th Territorians in the Top End. On the 20th and 21st Warmest days on average the minimum temperature at Darwin (Highest mean daily maximum temperature) dipped to below 20 °C for the first time this year. 33.1 °C at Another dry season indicator happened on the Coolest days on average 18th when, for the first time this year, the dew (Lowest mean daily maximum temperature) point in Darwin dropped below 15 °C. 26.1 °C at Arltunga Coldest day Eastern Arnhem thunderstorms (Lowest daily maximum temperature) On the 12th, a series of thunderstorms dumped 21.0 °C at Rabbit Flat on the 4th heavy rain over the eastern Arnhem District. Coldest night Rainfall totals from the event include 149.0 mm (Lowest daily minimum temperature) at and 148.0 mm at Tropical 2.0 °C at Arltunga on the 12th Gardens. Coolest nights on average (Lowest mean daily minimum temperature) 9.7 °C at Airport Synoptic summary Warmest nights on average On the 1st and 2nd, A low pressure system over (Highest mean daily minimum temperature) the Joseph Bonaparte Gulf pushed warm, moist, 25.4 °C at North East Island tropical air inland which produced heavy rainfall Warmest night and gusty storms across the western Top End. As (Highest daily minimum temperature) the low moved southwest the axis of the 27.2 °C at Point Stuart AWS on the 8th monsoon trough also moved south, bringing Warmest on average overall another burst of heavy rain to the area. This (Highest mean temperature) heavy rainfall during the first week of the month 28.2 °C at Jabiru Airport set new daily and monthly rainfall records for Coolest on average overall many stations across the western Top End. (Lowest mean temperature) 18.1 °C at Arltunga The rest of the month showed signs of transition from wet season to dry season. Occasional Wettest overall (Highest total rainfall) isolated thunderstorms brought heavy rains to 565.0 mm at Yirrkala Tropical Gardens the Top End including The Arnhem and coastal regions. As the month progressed these storms Wettest day (Highest daily rainfall) became less frequent. 162.6 mm at Tipperary on the 4th One of the largest contributors to dry season-like Highest wind gust weather patterns in the latter half of the month 65 km/h at Point Fawcett on the 2nd was a northward shift of the subtropical ridge. 65 km/h at Walungurru on the 2nd The ridge, which was located mostly over the Great Australian Bight for the first half of the month, slowly crept northward during the second and third weeks. This placed a broad high pressure area over , Victoria and New South Whales which reached into the southern NT and forced a cool and dry continental southeast flow over the Top End.

page 1 Monthly Weather Review Northern Territory April 2011

Daily mean sea level pressure analyses 1 April 2011 2 April 2011 3 April 2011

4 April 2011 5 April 2011 6 April 2011

7 April 2011 8 April 2011 9 April 2011

10 April 2011 11 April 2011 12 April 2011

13 April 2011 14 April 2011 15 April 2011

16 April 2011 17 April 2011 18 April 2011

page 2 Monthly Weather Review Northern Territory April 2011

19 April 2011 20 April 2011 21 April 2011

22 April 2011 23 April 2011 24 April 2011

25 April 2011 26 April 2011 27 April 2011

28 April 2011 29 April 2011 30 April 2011

page 3 Monthly Weather Review Northern Territory April 2011

Temperatures The mean temperature for Northern Territory in April 2011 was 23.2 °C, which is 2.2 °C below the long-term average and ranked as the coolest April on record. Mean daily maximum temperatures were below average across the NT while the mean daily minimum temperatures were near average in the Top End and below average across the rest of the NT. Thick cloud cover in the beginning of the month kept daily maximum temperatures low while allowing minimum temperatures to stay relatively high across the Top End. The rest of the Territory, especially the Alice Springs District was strongly influenced by a series of high pressure systems streaming across the Bight that pushed cool, dry air into the Territory from the southeast. The warmest on average was Jabiru Airport with 28.2 °C, followed by Dum In Mirrie AWS with 28.0 °C. The coolest on average was Arltunga with 18.1 °C, followed by with 18.4 °C and then Kulgera with 18.9 °C.

New temperature records

Record lowest April mean maximum temperature Years New record Old record of record Victoria River Downs 31.5 32.0 in 1983 43 Daly Waters AWS 30.7 30.9 in 1963 42 Centre Island 30.1 = 30.1 in 1999 37 Timber Creek 32.7 32.8 in 1985 31 Katherine Aviation Museum 31.4 31.6 in 2006 25

Record lowest April mean minimum temperature Years New record Old record of record Airport 17.5 18.2 in 1971 41 Centre Island 24.3 24.5 in 2008 37

Record lowest April mean temperature Years New record Old record of record 23.1 23.2 in 1983 41 Wave Hill 23.9 24.1 in 1976 37 Centre Island 27.2 27.4 in 1999 37 Wollogorang 24.8 25.0 in 1997 25

page 4 Monthly Weather Review Northern Territory April 2011

Maximum temperatures Anomalies of mean daily maximum temperature in April 2011 There were several locations in the NT which recorded record lowest mean maximum temperatures, including Katherine Aviation Museum and Victoria River Downs. Most places in the NT recorded below average mean maximum temperature for the month The hottest day was at Victoria River Downs with 35.8 °C on the 26th, followed by Bradshaw with 35.6 °C and then McArthur River Mine with 35.5 °C both on the 22nd. Port Keats Aero also had a maximum temperature of 35.5 °C on the 26th. The warmest days on average were at Jabiru Airport with 33.1 °C, followed by Bradshaw with 33.0 °C and McArthur River Mine with 33.0 °C, and then Port Keats Aero with 32.9 °C. The coolest day was at Rabbit Flat with 21.0 °C on the 4th, followed by Arltunga with 22.0 °C on the 11th, and then Tennant Creek Airport with 22.3 °C on the 2nd. The coolest days on average were at Arltunga with Decile rank of mean daily maximum temperature in April 2011 26.1 °C, followed by Alice Springs Airport with 27.0 °C, and then Kulgera with 27.5 °C.

There could be discrepancies between the values shown on these maps and those at individual locations, as a result of the way the maps are generated.

page 5 Monthly Weather Review Northern Territory April 2011

Minimum temperatures Anomalies of mean daily minimum temperature in April 2011 Although very few stations broke minimum temperature records in April, most locations had a mean minimum temperature that was very much below average for the month. When averaged across the Territory, the April mean minimum temperature was 2.4 °C cooler than average and ranked as the coolest April on record in terms of minimum temperatures. The coldest nights were all at Arltunga with 2.0 °C on the 12th, followed 3.8 °C on the 25th, and then 4.4 °C on the 19th. The coolest nights on average were at Alice Springs Airport with 9.7 °C, followed by Arltunga with 10.1 °C, and then Kulgera with 10.8 °C. The warmest nights on average were at Centre Island with 24.3 °C followed by Warruwi with 24.3 °C. The warmest night was at Point Stuart with 27.2 °C on the 8th. Decile rank of mean daily minimum temperature in April 2011

There could be discrepancies between the values shown on these maps and those at individual locations, as a result of the way the maps are generated.

page 6 Monthly Weather Review Northern Territory April 2011

Rainfall The heavy rainfall during the first week of the month New rainfall records set new daily and monthly rainfall records for many stations across the western Top End. Record highest April daily rainfall Years The wettest overall was Yirrkala Tropical Gardens New record Old record of record with 565.0 mm, followed by North East Island with Tipperary 162.6 on the 4th 138.0 on the 26th in 2006 39 552.0 mm, followed by Gove Airport with 492.4 mm. Katherine Aviation 88.4 on the 5th 64.0 on the 25th in 1970 35 Museum The wettest single day was at Tipperary with Hidden Valley 61.5 on the 3rd 32.8 on the 27th in 2006 26 162.6 mm on the 4th, followed by Gove Airport with Gorrie 107.0 on the 6th 55.6 on the 9th in 1996 23 Wagait Beach 114.6 on the 1st 90.0 on the 5th in 2006 21 149.0 and Yirrkala Tropical Gardens with 148.0 mm on the 12th. Record highest April total rainfall Years Total rainfall in April 2011 New record Old record of record Mallapunyah 218.0 157.0 in 2006 47 Katherine Research Farm 181.0 175.8 in 2006 41 Katherine Aviation Museum 227.8 212.6 in 2006 35 Hidden Valley 135.7 99.6 in 2006 26 Mango Farm 356.8 308.6 in 2006 30 Gorrie 185.0 92.6 in 2006 23 Litchfield 354.0 179.0 in 1985 24

Decile rank of total rainfall in April 2011

There could be discrepancies between the values shown on these maps and those at individual locations, as a result of the way the maps are generated.

page 7 Monthly Weather Review Northern Territory April 2011

Daily maximum temperature for April 2011

1 April 2011 2 April 2011 3 April 2011 4 April 2011 5 April 2011

6 April 2011 7 April 2011 8 April 2011 9 April 2011 10 April 2011

11 April 2011 12 April 2011 13 April 2011 14 April 2011 15 April 2011

16 April 2011 17 April 2011 18 April 2011 19 April 2011 20 April 2011

21 April 2011 22 April 2011 23 April 2011 24 April 2011 25 April 2011

26 April 2011 27 April 2011 28 April 2011 29 April 2011 30 April 2011

These maps are presented to give a statewide overview of conditions on each day through the month. There could be discrepancies between the values shown on these maps and those at individual locations, as a result of the way the maps are generated.

page 8 Monthly Weather Review Northern Territory April 2011

Daily minimum temperature for April 2011

1 April 2011 2 April 2011 3 April 2011 4 April 2011 5 April 2011

6 April 2011 7 April 2011 8 April 2011 9 April 2011 10 April 2011

11 April 2011 12 April 2011 13 April 2011 14 April 2011 15 April 2011

16 April 2011 17 April 2011 18 April 2011 19 April 2011 20 April 2011

21 April 2011 22 April 2011 23 April 2011 24 April 2011 25 April 2011

26 April 2011 27 April 2011 28 April 2011 29 April 2011 30 April 2011

These maps are presented to give a statewide overview of conditions on each day through the month. There could be discrepancies between the values shown on these maps and those at individual locations, as a result of the way the maps are generated.

page 9 Monthly Weather Review Northern Territory April 2011

Daily rainfall for April 2011

1 April 2011 2 April 2011 3 April 2011 4 April 2011 5 April 2011

6 April 2011 7 April 2011 8 April 2011 9 April 2011 10 April 2011

11 April 2011 12 April 2011 13 April 2011 14 April 2011 15 April 2011

16 April 2011 17 April 2011 18 April 2011 19 April 2011 20 April 2011

21 April 2011 22 April 2011 23 April 2011 24 April 2011 25 April 2011

26 April 2011 27 April 2011 28 April 2011 29 April 2011 30 April 2011

These maps are presented to give a statewide overview of conditions on each day through the month. There could be discrepancies between the values shown on these maps and those at individual locations, as a result of the way the maps are generated.

page 10 Monthly Weather Review Northern Territory April 2011

Summary of observations for Darwin in April 2011 Observations and climatology from Darwin Airport. Observed this month Climatological value Temperature Mean daily maximum temperature 31.7 °C 32.7 °C Mean daily minimum temperature 23.3 °C 24.0 °C Mean temperature 27.5 °C 28.3 °C Mean temperature at 9 am 26.5 °C 27.4 °C Mean temperature at 3 pm 30.4 °C 31.8 °C Highest temperature 33.3 °C on the 25th 36.7 °C on the 16th in 2003 Lowest temperature 19.1 °C on the 21st 16.0 °C on the 11th in 1943 Days 30 °C or warmer 29 28.8 Days 35 °C or warmer 0 1.2 Humidity Mean relative humidity at 9 am 75 % 74 % Mean relative humidity at 3 pm 55 % 52 % Pressure Mean MSL pressure at 9 am 1010.5 hPa 1011.3 hPa Mean MSL pressure at 3 pm 1007.3 hPa 1008.2 hPa Wind Strongest wind gust E 57 km/h on the 9th SSE 117 km/h on the 13th in 1985 Mean wind speed at 9 am 17 km/h 11 km/h Mean wind speed at 3 pm 19 km/h 17 km/h Days with strong wind 3 1.0 Days with gales 0 0.1 Days with gale-force gusts 0 0.5 Rainfall Total precipitation 193.0 mm 99.8 mm Number of rain days 13 9.1 Wettest day 52.2 mm on the 16th 142.7 mm on the 4th in 1959 Sunshine Mean daily sunshine 7.7 hours 8.8 hours Evaporation Mean daily evaporation 5.1 mm 6.4 mm Phenomena Days of thunder 6 4.9 Days of hail 0 0.0 Days of fog 0 0.5 Days with mist or haze 10 5.5

page 11 Monthly Weather Review Northern Territory April 2011

Summary of observations for Alice Springs in April 2011 Observed this month Climatological value Temperature Mean daily maximum temperature 27.0 °C 28.2 °C Mean daily minimum temperature 9.7 °C 12.6 °C Mean temperature 18.4 °C 20.4 °C Mean temperature at 9 am 18.8 °C 19.9 °C Mean temperature at 3 pm 26.5 °C 27.7 °C Highest temperature 31.6 °C on the 14th 39.9 °C on the 2nd in 2005 Lowest temperature 5.1 °C on the 12th 1.4 °C on the 23rd in 2001 Days 30 °C or warmer 3 11.2 Days 35 °C or warmer 0 1.4 Days 40 °C or warmer 0 0.0 Nights 5 °C or cooler 0 0.9 Nights 2 °C or cooler 0 0.1 Humidity Mean relative humidity at 9 am 46 % 43 % Mean relative humidity at 3 pm 25 % 25 % Pressure Mean MSL pressure at 9 am 1018.9 hPa 1018.3 hPa Mean MSL pressure at 3 pm 1014.9 hPa 1014.6 hPa Wind Strongest wind gust ESE 56 km/h on the 2nd NW 78 km/h on the 18th in 1972 Mean wind speed at 9 am 13 km/h 7 km/h Mean wind speed at 3 pm 19 km/h 15 km/h Days with strong wind 0 0.8 Days with gales 0 0.0 Days with gale-force gusts 0 0.2 Rainfall Total precipitation 0.0 mm 16.3 mm Number of rain days 0 2.1 Wettest day 85.6 mm on the 21st in 2000 Sunshine Mean daily sunshine 10.8 hours 9.5 hours Evaporation Mean daily evaporation 6.9 mm 7.8 mm Phenomena Days of thunder 0 1.1 Days of hail 0 0.1 Days of frost 0 0.6 Days of fog 0 0.2 Days with mist or haze 0 3.8

page 12 Monthly Weather Review Northern Territory April 2011

Daily and mean maximum temperatures for April 2011 Mean is the average of the daily maximum temperature for April 2011; it is only shown if there are sufficient days available. Anom is the difference between the mean daily maximum temperature for April 2011 and the long-term average maximum temperature for April. Decile is the decile rank of mean daily maximum temperature for April 2011 in the climate record of other April mean daily maximum temperatures; “L” indicates this is the lowest on record, and “H” it is the highest on record. Anomalies and deciles are only shown if there are sufficient years of climate record available. The lowest and highest maximum temperatures for each site for April 2011 are highlighted.

Darwin-Daly (14GA) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Batchelor Aero 31.9 −2.0 1 26.5 28.5 29.5 33.2 33.1 32.3 33.0 32.3 33.5 32.8 32.4 31.7 32.2 31.4 31.8 32.7 31.5 30.7 31.1 30.7 32.5 33.8 33.4 33.1 33.4 33.2 32.2 31.8 32.0 Black Point 29.5 31.3 30.6 29.0 31.6 31.5 28.6 29.4 30.6 30.9 31.3 28.5 29.1 31.0 30.5 30.4 32.0 31.6 32.8 31.8 31.2 31.7 Bradshaw 33.0 29.3 29.1 29.5 31.6 31.5 29.4 33.4 34.3 34.9 34.5 33.3 32.9 33.9 33.7 34.7 34.3 31.3 31.9 31.4 33.1 34.5 35.6 34.5 34.2 34.8 34.7 33.5 33.5 33.5 33.4 Channel Point 31.3 −1.1 1 28.7 30.5 30.5 31.8 31.1 31.2 32.0 32.0 32.7 32.7 31.7 31.4 32.0 31.2 31.0 31.6 30.0 29.7 30.0 30.5 30.7 32.4 32.4 31.6 32.6 31.5 30.9 Darwin Airport 31.7 −1.0 1 31.0 30.2 29.4 32.2 32.0 32.4 32.7 32.6 31.0 31.6 31.4 31.6 32.1 31.0 30.0 31.8 30.6 30.6 31.0 30.6 32.4 33.0 33.0 32.9 33.3 33.0 31.1 31.7 32.1 32.1 Delamere Weapons Range 31.0 −3.3 L 27.6 28.4 27.1 30.8 27.8 32.7 33.3 33.2 32.8 29.6 30.8 31.3 32.5 33.2 31.1 28.8 28.8 30.7 32.5 32.4 31.9 31.8 32.8 32.8 31.6 30.9 30.8 Douglas River 32.4 −2.3 1 28.9 28.9 32.9 32.8 33.1 31.0 33.2 33.7 33.9 34.1 33.1 32.8 33.1 33.4 32.1 33.3 31.0 30.4 30.4 31.4 31.9 33.7 33.6 33.2 33.4 33.8 31.9 32.5 32.1 32.4 Dum In Mirrie AWS 32.3 −0.6 3 31.3 30.8 29.3 31.6 32.1 32.1 32.6 32.4 32.8 32.2 31.9 31.2 32.3 31.5 31.8 32.8 32.3 31.4 31.3 31.5 32.5 33.1 34.8 34.0 34.5 34.2 32.6 33.3 33.0 32.5 Jabiru Airport 33.1 −1.4 1 27.2 32.1 32.1 29.8 33.7 30.7 34.3 33.3 34.3 33.1 32.7 33.9 34.0 32.9 32.5 34.4 32.7 32.5 32.5 32.4 34.4 35.3 34.6 34.4 34.9 34.5 33.2 33.8 33.5 33.5 Katherine Aviation Museum 31.4 −2.8 L 29.3 31.4 30.0 30.3 30.9 30.0 32.0 31.9 32.4 32.0 31.4 31.2 31.8 33.0 33.1 31.5 29.0 29.4 29.8 30.9 32.0 33.1 32.2 31.9 32.6 32.7 31.1 31.8 31.1 31.5 Mango Farm 32.3 −2.1 1 28.9 29.7 32.4 32.4 33.2 31.1 33.5 33.6 33.6 33.8 33.3 32.3 32.5 30.0 32.7 31.4 30.5 30.6 31.5 32.4 33.5 34.0 34.5 33.1 33.0 32.0 32.3 32.6 32.0 Middle Point AWS 32.7 29.0 30.7 28.6 31.4 33.2 32.8 33.6 33.9 34.1 32.3 32.9 32.9 33.7 32.9 33.6 31.9 31.6 31.4 31.7 33.5 33.6 34.4 34.3 34.8 34.1 32.3 33.5 32.9 33.2 Noonamah AWS 32.7 30.4 30.2 28.5 33.0 33.9 33.8 33.9 33.8 32.4 32.6 32.5 33.4 33.1 32.7 32.8 33.2 31.9 32.0 32.1 31.5 33.3 34.5 34.0 33.6 34.1 33.8 32.1 32.6 32.8 33.2 Oenpelli 31.4 33.2 31.1 33.0 32.1 32.1 31.9 32.5 32.5 32.6 32.2 32.0 34.0 33.5 32.9 33.0 Pine Creek Council 31.4 −2.6 2 29.2 29.7 30.7 29.0 32.1 29.5 32.6 31.8 32.5 32.3 31.9 31.4 32.3 32.4 30.3 32.6 30.4 29.9 29.9 30.9 32.3 33.4 32.8 32.4 33.1 32.6 30.9 31.5 31.2 31.8 Pirlangimpi 32.1 −0.6 2 29.6 33.3 31.4 31.6 30.4 31.4 33.3 32.0 29.3 31.1 32.5 28.0 32.3 33.1 30.8 32.2 32.0 31.6 32.6 32.8 33.0 32.3 33.8 33.8 33.8 33.6 33.3 32.9 32.9 32.0 Point Fawcett 31.1 −1.1 1 30.3 31.1 30.7 32.7 30.0 31.1 31.9 29.7 30.2 30.1 30.5 29.7 32.8 31.2 30.8 31.6 30.9 30.0 30.4 30.2 31.3 31.1 33.0 31.7 31.8 31.7 31.7 31.1 31.4 30.8 Point Stuart AWS 28.8 31.5 28.2 28.1 30.9 29.8 31.8 31.3 31.1 30.3 30.8 30.5 30.5 31.2 30.3 30.0 30.8 30.0 30.1 30.1 31.1 Port Keats Aero 32.9 26.2 29.2 30.6 30.1 32.5 30.8 32.9 33.4 35.3 35.2 33.6 33.5 33.9 32.2 31.1 33.9 32.6 31.8 32.2 32.4 33.6 34.8 35.3 34.6 34.7 35.5 33.3 33.8 33.5 33.8 Tindal RAAF 32.2 −1.6 1 28.8 32.1 30.7 30.0 32.0 31.2 33.1 32.9 33.6 33.2 32.3 31.7 32.6 33.7 34.1 33.4 30.1 30.3 30.3 31.8 32.5 33.8 33.3 32.9 33.4 33.4 32.0 32.0 31.8 31.6 Arnhem (14BC) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Alyangula Police 30.7 −1.1 2 30.0 29.5 30.1 30.1 30.2 27.8 27.5 29.3 30.7 32.0 32.4 32.2 30.5 30.5 30.1 31.7 29.5 30.6 31.5 32.0 32.5 31.4 31.5 31.5 31.4 Gove Airport 29.8 −1.0 2 30.4 28.7 30.9 29.1 29.7 26.7 28.4 27.7 26.3 30.5 29.9 27.7 30.2 28.2 30.9 31.2 30.7 30.2 30.7 30.7 27.8 31.5 30.4 30.5 30.8 31.3 30.5 31.1 30.5 30.5 AWS 31.3 −1.1 3 29.7 30.5 28.9 29.2 30.8 30.5 27.4 30.3 31.7 29.6 31.3 32.8 32.7 33.1 30.6 30.6 31.2 32.4 31.4 33.3 31.5 32.5 32.7 33.1 32.2 32.0 31.5 31.8 Maningrida Aero 31.7 29.3 26.0 29.4 30.8 31.1 31.0 31.1 32.3 31.7 31.1 31.4 30.5 31.6 31.4 31.6 32.8 32.6 31.9 31.4 32.7 33.5 32.6 33.3 33.7 33.5 34.1 32.2 32.5 33.0 32.3 Milingimbi AWS 31.7 28.4 29.6 30.0 30.9 30.8 28.9 31.8 30.6 31.6 31.2 31.4 31.5 32.1 30.3 31.3 33.0 32.7 32.1 31.8 32.9 32.7 32.3 32.2 34.2 33.2 34.1 33.0 32.3 33.1 32.1 Ngayawili 30.9 −0.8 3 27.9 31.5 30.1 31.6 29.8 27.3 31.1 27.1 30.9 30.7 31.4 30.8 31.2 30.6 31.5 31.7 31.7 31.4 31.5 31.9 29.2 31.0 31.7 32.1 31.9 32.4 32.0 31.4 32.4 32.0 North East Island 30.3 30.1 31.4 28.2 27.9 29.3 28.2 29.6 28.1 27.2 30.0 31.3 30.6 30.4 31.6 31.9 31.1 30.3 29.7 30.7 31.0 30.4 31.4 30.9 31.2 31.9 31.2 30.8 30.4 30.1 30.8 Warruwi 30.5 −1.1 1 29.0 29.9 28.0 29.6 30.8 30.8 30.9 31.3 28.6 30.9 29.7 29.8 30.6 30.9 29.0 30.4 30.8 30.0 30.1 31.0 31.4 30.6 30.8 32.2 31.3 32.3 31.7 30.6 31.1 30.7 Roper-Mcarthur (14DE) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Borroloola 32.4 −1.5 2 30.9 28.3 30.7 32.2 31.0 31.7 33.7 31.2 34.5 34.3 32.4 32.1 32.5 33.4 33.5 32.1 30.7 30.4 31.8 32.4 34.1 34.6 33.3 33.5 34.2 33.4 32.5 32.6 31.9 31.6 Bulman AWS 31.7 31.0 31.2 32.1 29.1 30.1 27.4 31.3 28.8 31.7 31.3 31.6 31.1 31.9 33.2 34.0 32.7 30.9 30.6 30.4 32.5 32.1 33.4 33.0 32.8 33.4 32.7 31.6 32.5 32.3 32.9 Centre Island 30.1 −2.0 L 28.8 28.1 28.5 29.1 28.8 29.4 29.7 30.3 30.8 31.1 30.6 29.6 29.7 31.2 31.7 31.1 29.9 29.0 30.3 30.0 31.4 32.5 31.7 30.4 32.0 29.7 29.3 29.2 28.7 29.3 Daly Waters AWS 30.7 −3.2 L 26.8 24.5 28.9 29.2 32.2 28.9 32.5 33.1 33.0 32.5 30.3 30.1 31.7 32.6 32.3 30.5 28.1 28.0 30.0 31.2 32.4 31.8 30.8 31.8 32.5 32.3 31.4 31.3 30.8 30.8 Larrimah 31.4 −2.5 1 27.1 28.5 29.4 28.9 32.5 30.6 33.0 32.8 33.0 32.0 31.0 32.0 32.5 32.8 32.0 28.7 29.8 30.0 31.5 33.0 33.3 33.5 33.5 33.0 31.5 32.0 31.0 31.3 McArthur River Mine 33.0 −1.8 1 30.2 28.9 30.4 32.7 31.2 33.2 34.3 33.4 34.6 34.4 32.9 32.7 33.2 34.0 34.0 33.3 30.6 30.7 32.3 33.5 35.0 35.5 34.0 34.0 35.1 34.2 33.3 33.0 32.5 31.9 Ngukurr 31.8 −2.3 2 27.0 28.4 27.8 31.4 31.8 29.3 32.3 31.2 32.6 32.1 32.6 31.1 31.9 32.6 33.0 32.9 31.5 31.7 30.7 31.9 33.1 33.9 32.9 33.3 33.4 33.6 32.4 32.4 31.9 32.0 Wollogorang 31.6 −2.2 1 29.4 26.7 28.2 30.7 31.1 32.3 31.9 32.2 33.1 31.4 31.2 31.5 33.0 33.6 31.4 30.4 29.9 32.7 32.5 34.5 32.2 32.7 32.9 33.8 32.1 31.7 31.1 30.6 31.8 Victoria (14F) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Kidman Springs 32.0 −3.5 L 28.1 25.6 28.0 25.2 28.8 30.5 32.8 34.6 34.5 34.0 32.5 32.2 32.5 34.1 34.7 32.5 29.5 30.9 33.4 34.4 34.2 34.2 33.9 34.2 33.2 32.8 32.5 32.7 Lajamanu 30.2 −3.6 L 27.7 24.4 25.6 25.1 30.3 28.3 31.3 33.3 32.6 32.3 30.3 30.9 31.5 32.3 33.4 30.2 27.5 27.8 29.4 30.5 31.7 32.0 30.3 29.8 31.2 31.8 31.4 31.0 30.5 30.8 Timber Creek 32.7 −2.5 L 28.7 28.0 29.5 29.8 31.1 31.7 34.0 34.6 34.0 34.9 32.6 31.8 33.5 34.2 35.0 33.1 30.2 31.4 32.7 34.6 34.2 33.8 33.5 34.7 34.6 33.3 33.0 33.0 33.5 Victoria River Downs 31.5 −3.0 L 27.7 24.7 27.9 25.8 29.6 31.0 32.4 34.3 33.1 33.5 32.4 31.8 32.5 33.0 33.4 32.5 28.8 29.1 30.7 32.1 32.9 32.8 32.6 32.5 33.1 35.8 32.6 32.5 32.4 32.0 Wave Hill 30.8 −3.5 1 27.5 25.0 27.0 25.5 30.4 30.3 32.4 33.8 33.5 33.3 30.9 31.6 31.4 33.2 33.0 31.3 28.4 27.9 29.6 31.5 32.2 32.5 31.0 31.2 32.2 32.8 32.0 31.8 31.1 31.0 Barkly (15A) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Brunette Downs 30.0 −3.6 1 25.5 26.5 30.1 27.4 29.9 33.1 31.7 27.6 28.2 32.2 32.2 29.3 27.4 27.2 29.6 30.9 31.2 31.1 29.7 31.4 32.1 32.7 30.9 31.0 29.9 30.6 Tennant Creek Airport 28.7 −3.0 1 26.9 22.3 27.1 24.7 27.6 30.3 30.6 31.6 31.5 30.7 27.8 27.7 29.3 32.1 30.9 28.6 26.2 26.3 28.4 29.2 30.2 29.7 27.6 29.0 30.0 30.4 30.0 29.2 28.4 27.3 Alice Springs (15B) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Alice Springs Airport 27.0 −1.2 3 29.8 26.9 27.2 27.0 27.1 28.2 28.6 29.8 30.3 23.0 23.0 26.2 31.5 31.6 26.0 24.7 23.8 25.3 25.7 28.3 28.8 24.8 24.9 25.9 26.1 26.9 28.3 27.0 27.0 27.2 Arltunga 26.1 28.0 26.0 26.0 26.3 26.6 27.4 28.2 28.9 28.9 22.7 22.0 24.7 29.6 32.0 25.5 22.8 22.6 23.7 25.1 26.9 27.2 23.4 23.4 25.0 25.6 27.2 27.2 26.3 26.3 27.2 Curtin Springs 28.9 −0.2 4 30.5 28.3 29.2 28.6 29.0 30.3 30.6 32.6 33.4 23.0 25.2 29.0 33.6 29.8 27.0 26.8 26.5 26.7 28.6 30.6 30.9 27.6 26.9 27.3 27.0 31.0 30.4 29.3 29.8 Jervois 28.7 −1.9 1 30.0 30.6 30.0 29.6 31.1 30.1 30.7 31.7 31.6 26.4 23.8 25.9 30.0 34.2 27.9 25.7 25.2 25.9 27.7 29.1 29.7 26.6 25.8 27.0 28.5 29.8 29.8 28.1 28.3 28.9 Kulgera 27.5 −0.4 5 29.4 26.6 28.2 29.9 30.4 31.5 22.5 23.2 26.6 33.1 28.2 25.8 24.7 26.4 27.8 29.5 29.0 25.1 25.6 26.2 25.9 27.3 29.2 28.4 26.8 28.0 Papunya 30.1 31.0 32.0 32.8 32.3 27.7 27.5 29.8 28.4 28.1 Rabbit Flat 30.5 −3.7 L 29.1 28.7 28.0 21.0 25.0 30.7 31.4 33.2 33.5 33.0 31.7 31.1 31.6 33.6 35.0 30.8 27.9 28.0 29.9 31.3 32.1 32.0 30.2 30.0 30.5 31.3 31.4 30.6 30.6 30.3 Territory Grape Farm 29.0 −1.8 3 30.8 29.1 27.6 29.6 29.1 29.8 30.2 30.8 31.6 28.3 26.3 28.0 30.8 33.2 28.8 26.6 25.7 27.0 28.1 30.0 30.2 28.4 27.0 28.0 28.5 29.7 30.3 29.0 28.5 28.8 Walungurru 31.5 33.2 31.3 31.8 31.5 31.7 32.9 32.4 34.1 34.7 31.8 30.6 31.8 34.1 33.5 30.0 29.8 28.6 29.1 31.0 32.4 32.8 31.3 30.1 29.9 31.0 31.4 32.0 30.4 30.1 30.0 Yuendumu 28.5 −1.6 2 27.6 27.3 26.8 27.1 27.9 28.8 29.1 31.0 30.6 28.4 27.5 29.3 31.4 32.7 28.8 25.6 25.7 28.0 29.1 29.3 28.4 27.0 27.2 28.0 29.3 28.9 28.5 28.1 29.1 Yulara Aero 28.6 −1.3 3 30.5 28.4 29.3 28.6 29.0 30.1 30.2 31.6 32.6 23.9 24.7 29.0 33.1 28.9 26.1 27.2 26.7 26.5 28.0 29.8 29.9 26.4 26.9 27.3 27.5 27.7 30.6 29.5 28.3 30.4 Offshore Islands (200) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Northern Endeavour 32.2 −0.7 2 33.0 33.0 33.0 34.0 34.0 34.0 32.0 33.0 32.0 30.0 30.0 30.0 31.0 32.0 33.0 31.0 30.0 31.0 30.0 35.0 32.0 33.0 33.0 33.0 33.0 32.0 33.0 33.0 33.0 31.0

page 13 Monthly Weather Review Northern Territory April 2011

Daily and mean minimum temperatures for April 2011 Mean is the average of the daily minimum temperature for April 2011; it is only shown if there are sufficient days available. Anom is the difference between the mean daily minimum temperature for April 2011 and the long-term average minimum temperature for April. Decile is the decile rank of mean daily minimum temperature for April 2011 in the climate record of other April mean daily minimum temperatures; “L” indicates this is the lowest on record, and “H” it is the highest on record. Anomalies and deciles are only shown if there are sufficient years of climate record available. The lowest and highest minimum temperatures for each site for April 2011 are highlighted.

Darwin-Daly (14GA) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Batchelor Aero 22.1 +0.6 7 24.1 23.6 23.7 24.1 24.3 23.3 23.7 24.3 24.5 23.3 23.1 24.1 23.7 22.9 23.2 22.4 21.9 20.5 16.5 15.1 17.0 21.4 22.3 22.6 20.3 19.6 20.1 Black Point 25.8 24.3 26.9 24.4 25.2 24.8 24.7 24.5 23.9 25.2 24.8 24.5 24.6 25.0 24.4 24.1 21.8 21.8 25.2 24.8 21.6 22.8 Bradshaw 21.5 24.3 24.4 24.5 24.8 24.5 24.2 22.7 23.1 23.9 24.1 23.8 21.9 20.2 23.2 25.6 23.3 21.7 16.1 15.5 16.1 19.0 21.1 24.0 20.4 18.7 19.6 19.6 17.2 17.9 18.8 Channel Point 23.2 −0.2 4 24.8 24.8 23.8 24.9 24.9 25.0 24.5 25.5 26.2 24.9 24.9 24.8 23.9 23.5 23.8 23.4 24.0 22.0 20.5 18.4 19.7 22.0 23.6 21.4 21.6 22.9 19.5 20.5 Darwin Airport 23.3 −0.7 2 24.9 24.1 24.2 24.8 25.1 25.1 24.3 25.7 24.6 24.0 24.2 25.3 24.2 24.0 24.5 23.4 22.5 21.1 20.5 19.9 19.1 22.5 23.8 24.3 22.7 24.0 21.7 20.4 21.7 21.2 Delamere Weapons Range 20.3 −0.7 2 23.1 22.1 22.4 22.5 22.9 22.6 22.6 23.1 22.9 21.1 18.6 18.2 20.0 21.9 20.7 20.6 17.0 17.8 19.7 21.5 17.1 18.2 20.4 18.3 16.9 15.7 Douglas River 21.0 +0.7 7 24.2 24.0 23.6 23.7 24.4 23.4 22.7 23.3 24.1 23.0 22.9 22.4 21.3 23.3 24.2 22.8 20.3 16.7 16.1 13.9 17.1 21.1 22.4 20.0 19.2 19.1 18.4 16.4 17.3 17.9 Dum In Mirrie AWS 23.7 −0.6 1 24.8 24.7 24.5 25.4 25.5 25.0 23.6 26.4 25.6 24.4 24.9 25.3 25.4 24.7 25.4 24.6 24.4 22.7 21.8 19.3 19.8 23.7 24.7 25.0 21.7 23.4 21.4 20.2 20.6 21.3 Jabiru Airport 23.2 −0.3 3 24.8 23.4 24.7 25.3 23.8 24.4 24.5 25.8 24.9 24.4 23.5 24.3 23.4 24.4 23.7 23.6 22.7 22.0 20.5 20.4 21.7 23.0 23.0 22.4 24.4 22.6 21.4 19.7 21.8 21.3 Katherine Aviation Museum 20.1 −0.6 3 23.9 23.5 23.7 23.1 23.1 23.5 22.6 22.2 23.0 23.0 22.5 20.8 20.0 22.0 23.8 21.4 19.1 16.1 14.8 13.7 17.8 21.1 21.4 18.2 18.4 18.5 15.9 14.8 14.6 15.0 Mango Farm 22.4 +0.9 8 23.5 24.1 23.2 24.0 23.7 24.0 23.7 24.6 25.7 24.4 23.9 24.4 24.6 23.6 23.9 23.4 19.9 20.0 16.8 18.8 21.0 22.1 22.5 21.0 20.4 17.4 20.5 Middle Point AWS 22.3 24.9 25.2 22.8 23.6 25.0 24.4 24.5 25.5 25.3 24.2 24.0 24.4 24.3 23.9 23.5 22.7 19.5 19.2 16.3 17.9 22.0 23.5 23.2 21.2 20.2 19.5 16.4 20.0 20.0 Noonamah AWS 22.2 24.9 24.1 23.5 24.5 24.7 24.5 23.3 25.5 24.8 23.7 23.5 24.2 24.2 23.7 23.3 22.9 22.7 20.3 18.4 16.9 16.9 21.8 23.4 23.0 20.8 20.0 20.3 17.3 18.6 19.1 Oenpelli 25.0 24.0 24.5 25.0 25.4 24.5 24.4 24.4 24.4 24.6 23.2 23.0 22.3 23.5 22.6 Pine Creek Council 21.4 −0.7 2 23.3 23.1 23.3 23.6 23.3 22.5 23.5 23.5 23.9 23.0 22.5 22.3 22.2 23.0 23.4 22.5 20.7 17.6 17.2 17.3 20.0 22.5 22.7 20.6 20.5 20.2 19.2 17.4 19.5 18.4 Pirlangimpi 23.0 0.0 5 24.1 24.9 24.9 25.3 23.8 24.1 23.9 23.2 23.3 23.7 24.8 23.7 24.7 24.0 23.9 23.9 23.2 22.6 22.0 20.1 19.3 22.2 23.7 23.6 21.8 22.7 22.1 19.8 20.2 20.1 Point Fawcett 22.6 −1.0 1 25.1 25.4 25.7 25.6 24.9 24.1 24.3 22.9 24.3 23.6 25.2 23.3 24.3 24.1 24.7 23.5 23.2 22.3 21.1 18.5 16.5 21.0 23.1 23.9 20.5 21.6 20.2 18.6 19.1 18.4 Point Stuart AWS 25.2 24.6 25.9 24.8 24.0 24.8 25.6 27.2 25.2 24.2 24.6 25.6 24.1 24.1 24.8 24.3 25.9 21.8 22.6 20.3 21.1 25.0 Port Keats Aero 22.5 23.7 24.3 24.0 24.5 24.2 23.9 23.1 25.2 25.0 24.3 24.2 25.2 24.9 24.3 24.5 24.1 24.3 21.4 17.5 15.3 17.1 20.6 26.2 23.3 20.1 21.8 22.6 18.9 18.9 18.9 Tindal RAAF 20.3 −0.2 4 24.0 24.2 23.8 24.1 23.7 24.0 22.8 22.7 23.3 23.4 22.5 20.7 19.7 21.6 24.0 21.5 18.6 15.8 14.6 14.3 18.1 21.1 21.6 17.8 18.8 18.5 17.0 15.8 15.5 15.1 Arnhem (14BC) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Alyangula Police 21.9 −1.0 2 24.7 24.3 23.4 24.6 22.9 23.5 24.5 22.5 23.5 22.9 22.5 21.0 21.8 19.9 18.1 19.9 22.1 22.0 20.5 21.0 21.2 19.2 21.4 20.2 20.0 Gove Airport 23.3 +0.1 5 24.3 24.4 22.8 24.5 23.7 23.4 23.8 24.8 24.2 24.3 23.1 22.0 23.1 22.9 23.3 21.2 22.1 22.8 20.3 21.8 24.4 24.0 23.3 24.3 23.5 24.6 24.4 21.9 22.1 22.5 Groote Eylandt Airport AWS 21.4 −0.1 6 24.3 24.3 23.9 25.0 23.8 24.5 24.2 24.0 23.4 22.2 21.8 22.1 19.2 19.8 18.5 16.1 18.2 22.0 23.2 20.9 19.6 20.1 21.1 19.1 19.3 18.9 19.6 Maningrida Aero 23.3 24.5 23.3 23.9 23.6 24.0 23.6 24.2 25.1 24.5 24.1 23.7 23.3 23.5 23.9 23.2 24.1 22.4 21.7 21.3 21.0 22.9 23.0 24.3 23.0 23.7 23.2 22.2 22.1 22.4 22.3 Milingimbi AWS 23.5 24.5 23.9 24.3 24.9 24.2 23.7 24.1 24.9 24.7 24.4 23.4 22.9 24.2 24.2 24.9 24.8 23.2 22.3 20.1 20.6 23.5 23.5 24.0 23.2 23.9 23.5 22.6 22.4 22.9 21.4 Ngayawili 23.8 +0.3 7 24.8 24.8 24.7 24.6 24.1 24.3 23.8 25.3 24.9 24.6 23.8 22.8 24.7 23.8 24.3 24.3 22.9 23.0 22.3 22.4 24.8 23.7 24.2 24.1 24.0 24.0 22.3 22.8 22.1 22.6 North East Island 25.4 24.7 24.6 24.7 24.4 23.4 24.5 23.8 25.4 24.0 23.7 25.6 24.5 24.8 25.2 25.7 25.5 26.6 26.7 25.5 26.3 27.1 23.6 26.9 26.4 26.6 26.9 27.0 26.8 26.5 25.7 Warruwi 24.3 −0.7 2 25.1 24.4 25.5 24.4 25.5 24.2 25.7 24.2 24.5 23.5 24.8 24.0 24.2 24.3 24.1 24.6 23.8 23.4 22.3 22.3 25.1 25.9 24.6 25.7 24.0 24.6 24.1 23.3 23.8 Roper-Mcarthur (14DE) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Borroloola 18.7 −1.6 1 23.3 23.1 22.0 22.4 22.5 22.1 21.4 22.1 23.1 23.3 20.1 17.6 18.0 18.1 19.1 19.5 16.1 14.6 13.5 14.4 20.1 20.0 17.7 15.4 17.7 16.5 15.0 14.7 14.7 13.7 Bulman AWS 21.0 24.1 23.5 23.9 23.9 23.7 23.5 24.1 24.2 23.6 23.1 22.7 22.5 22.1 22.1 22.4 20.6 20.0 18.3 15.6 15.8 19.6 21.2 20.9 18.3 22.4 18.5 17.8 17.0 17.1 16.9 Centre Island 24.3 −1.0 L 24.5 23.9 23.1 23.5 25.7 25.8 25.9 25.8 25.7 24.7 25.0 24.1 23.7 24.5 24.6 24.6 23.3 22.7 21.9 23.1 25.3 25.4 24.7 24.0 24.1 25.1 24.1 23.9 24.1 22.8 Daly Waters AWS 17.9 −1.8 2 23.3 23.0 21.2 21.7 22.8 21.9 22.1 21.9 22.8 21.6 20.7 17.2 15.0 17.2 18.5 18.5 16.8 13.7 12.1 11.7 15.3 17.8 18.7 14.7 15.2 15.6 14.3 13.7 13.7 12.8 Larrimah 19.1 −0.7 3 23.0 23.8 22.0 22.1 22.3 23.2 22.8 22.8 23.0 23.0 18.5 18.0 18.9 21.7 19.4 18.5 14.5 12.0 13.0 17.0 20.0 20.6 16.5 17.2 15.5 15.1 14.5 14.5 McArthur River Mine 20.1 −0.4 4 24.1 23.8 23.5 23.3 23.0 22.0 22.4 24.2 23.7 24.2 22.2 19.2 18.8 19.2 20.8 20.6 18.4 15.8 14.9 15.7 21.1 20.4 19.6 17.4 20.0 18.8 16.1 16.2 17.3 16.8 Ngukurr 22.0 +0.1 5 23.9 24.2 23.1 23.3 24.3 23.6 23.7 23.8 24.2 23.9 24.2 22.2 21.9 22.7 23.4 21.9 21.1 18.8 17.2 17.8 22.1 23.4 23.4 19.8 22.0 21.0 20.4 19.3 20.1 18.5 Wollogorang 18.3 −1.4 2 22.9 23.1 22.8 23.1 24.6 24.5 23.2 24.2 22.8 19.4 16.8 15.3 15.4 18.1 17.2 15.8 13.1 12.8 14.8 19.5 18.2 16.1 15.7 19.9 15.9 13.9 14.5 13.8 12.9 Victoria (14F) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Kidman Springs 19.3 −1.3 1 23.5 23.1 22.2 23.2 22.2 23.0 23.2 22.0 23.4 22.5 23.1 18.4 17.4 20.1 20.9 20.2 14.9 12.4 13.4 15.5 22.4 16.6 15.7 17.8 17.1 17.6 14.6 14.7 Lajamanu 15.4 −2.6 L 21.3 20.1 19.4 20.1 18.9 20.4 19.1 19.1 20.5 18.9 17.9 15.0 11.8 12.0 14.9 18.0 16.1 10.9 9.7 10.4 12.0 15.1 13.7 11.6 12.3 15.8 13.2 11.7 11.5 11.8 Timber Creek 20.6 −0.5 5 23.4 23.4 23.1 24.1 23.8 23.6 22.6 23.3 24.0 24.0 24.4 21.7 19.6 22.3 23.2 21.0 16.1 13.8 14.6 16.8 18.9 25.2 20.7 18.5 19.3 18.6 15.5 15.5 17.0 Victoria River Downs 18.6 −1.1 3 23.0 23.1 22.0 22.7 22.1 23.1 21.8 23.4 22.8 21.9 21.6 17.6 17.1 18.9 20.7 19.4 18.9 13.3 11.9 12.8 14.9 18.7 17.8 15.7 15.6 17.7 16.1 14.1 14.1 14.7 Wave Hill 16.9 −1.9 1 21.8 21.0 21.1 21.8 20.7 22.2 20.7 20.7 20.6 20.2 18.2 17.0 13.9 15.7 18.0 19.3 15.3 11.3 10.6 11.8 12.7 18.0 16.2 14.3 14.3 16.6 14.1 13.1 12.6 13.1 Barkly (15A) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Brunette Downs 17.2 −2.0 1 22.0 21.1 21.0 20.8 21.2 20.9 20.2 17.0 14.6 14.1 16.8 16.9 14.4 13.0 14.3 15.1 17.0 17.8 14.8 15.5 16.3 17.4 14.6 21.0 15.2 13.9 Tennant Creek Airport 17.5 −2.9 L 21.5 20.2 18.5 21.5 21.0 17.7 18.8 21.6 20.7 19.8 16.4 14.7 13.8 15.9 19.0 18.4 15.0 13.2 14.4 15.1 16.4 17.6 16.3 16.1 17.3 18.3 17.0 16.8 16.5 16.0 Alice Springs (15B) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Alice Springs Airport 9.7 −2.9 2 14.8 14.8 10.7 10.3 10.0 10.9 10.2 11.2 12.9 12.2 5.5 5.1 9.5 17.3 12.5 9.4 6.8 5.7 7.3 9.3 10.1 10.0 5.7 6.2 6.2 6.6 9.3 9.1 8.7 12.5 Arltunga 10.1 18.8 17.0 14.6 14.8 15.5 16.5 12.9 11.5 11.2 13.5 9.2 2.0 5.3 12.4 16.4 6.4 9.0 9.0 4.4 5.6 7.4 12.0 4.7 4.5 3.8 7.0 9.0 7.2 7.7 14.5 Curtin Springs 12.5 −0.9 3 19.3 16.0 14.0 13.8 11.2 11.3 12.2 16.1 16.0 15.5 8.0 8.6 9.7 9.1 10.4 12.1 13.0 9.5 10.0 10.0 11.0 14.4 14.5 14.8 Jervois 13.0 −1.2 3 21.1 20.3 18.1 16.9 17.2 17.0 16.6 13.5 15.4 16.2 8.4 5.8 7.4 12.1 16.3 11.0 10.6 10.8 9.9 11.8 13.1 14.5 9.5 9.5 9.4 11.3 13.5 10.8 10.3 11.9 Kulgera 10.8 −3.0 1 16.5 13.0 10.0 6.8 6.8 8.5 14.3 18.5 13.8 4.5 9.3 13.5 14.9 8.0 7.4 6.4 13.8 10.1 10.8 8.4 6.2 8.9 8.2 5.5 8.0 18.0 17.5 16.1 Papunya 17.8 15.8 14.4 16.2 9.1 9.8 10.5 11.8 14.8 Rabbit Flat 14.8 −1.8 2 22.0 19.1 19.0 18.0 19.3 17.1 18.4 16.4 17.4 16.2 13.5 13.0 16.0 18.3 14.2 10.2 10.6 10.6 12.4 13.1 12.7 9.2 11.1 12.7 14.3 12.9 11.8 13.6 Territory Grape Farm 12.2 −2.4 2 19.5 18.0 17.4 18.1 17.9 16.9 12.8 12.7 13.6 14.6 9.0 7.4 7.2 9.8 16.1 9.1 9.2 8.6 7.9 10.3 12.1 11.4 9.0 7.8 9.2 10.4 13.3 13.6 11.8 11.6 Walungurru 18.9 20.6 20.8 18.5 19.3 21.2 21.2 19.8 20.7 21.3 19.3 16.8 17.3 18.8 20.8 18.3 17.4 18.8 16.4 15.6 17.4 21.1 19.3 17.6 15.9 16.8 17.2 18.9 19.3 20.1 19.1 Yuendumu 13.7 −1.8 2 19.2 17.1 17.5 17.6 17.3 14.4 14.4 14.9 15.9 12.5 11.4 10.8 12.9 17.5 13.0 10.3 10.7 10.9 12.5 12.4 11.2 11.4 11.4 13.3 13.2 12.2 13.5 13.0 Yulara Aero 12.6 −1.8 1 18.8 15.5 14.3 14.0 11.8 13.0 14.9 16.3 15.7 15.7 8.0 7.6 12.2 15.7 9.4 12.8 11.0 7.1 9.2 12.6 12.1 9.0 9.4 10.8 10.5 12.3 14.1 13.9 16.8 Offshore Islands (200) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Northern Endeavour 26.9 −0.6 3 25.0 28.0 28.0 29.0 29.0 27.0 27.0 26.0 29.0 27.0 24.0 25.0 25.0 26.0 28.0 25.0 23.0 25.0 25.0 27.0 28.0 29.0 28.0 25.0 28.0 29.0 26.0 29.0 28.0 28.0

page 14 Monthly Weather Review Northern Territory April 2011

Daily and total rainfall for April 2011 Total is the total precipitation for April 2011; a missing total indicates there is concern about the quality of some of the daily values. Avg is the long-term average total precipitation for April. Decile is the decile rank of total precipitation for April 2011 in the climate record of other April totals; “L” indicates this is the lowest on record, and “H” it is the highest on record. Long-term average and decile rank are only shown if there are sufficient years of climate record available. Reports of zero precipitation are shown as “· ”. When a reading was accumulated over more than one day, “»” is shown on the days that are part of the accumulation.

Darwin-Daly (14GA) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Adelaide River Post Office 328.0 87 10 81.0 75.0 12.0 3.0 44.0 5.0 4.0 · · · 5.0 · · 61.0 · 36.0 · · · · · · 2.0 · · · · · · · Batchelor Aero 353.8 89 10 100.2 127.6 11.0 1.6 · 16.4 14.0 · · 1.6 · · · 0.2 43.6 0.2 · · · · · 37.4 · · · · · · Berrimah Research Farm 190.2 92 9 29.8 » » 28.8 0.2 1.0 2.2 0.4 » » 66.6 0.4 0.2 · · » » 60.6 · · · · · · · · · · · · Berry Springs Rangers 21.8 101 1 17.4 4.4 Black Point 193.9 106 8 12.6 40.4 · » 20.0 0.6 » 27.0 38.2 1.2 11.8 » 14.1 0.2 3.0 24.8 · · · · · · · · · · · · · · Bonalbo 165.4 56 10 38.0 35.2 1.6 17.0 20.0 25.8 4.4 · · · 15.4 · · · · 8.0 · · · · · · · · · · · · · · Bradshaw 115.8 8.8 41.2 17.8 28.4 2.2 15.8 0.2 1.4 · · · · · · · · · · · · · · · · · · · · · · Cdu Katherine Rural Campus 160.4 47 10 29.6 47.0 2.8 51.6 29.4 Channel Island 144.8 65 10 26.2 42.0 4.0 · » 36.4 » 1.6 » 2.6 7.4 » » · 10.8 » 13.8 · · » · » » · Channel Point 268.9 111 9 36.4 53.5 21.8 · 6.8 29.6 1.8 · · 3.0 · 0.6 6.0 90.4 6.8 12.2 · · · · · · · · · · · · · · Charles Darwin University 135.0 58.4 18.4 » » » 2.8 2.0 0.8 » » 37.4 0.8 · · · · · · · · · » » » » » 14.4 · · · Cooinda Aerodrome 167.7 9.0 37.0 · 15.8 14.0 20.0 · · 7.0 26.2 · · · 36.8 0.5 · · · · · · · 1.4 · · · · · · · CSIRO Berrimah 156.5 105 8 30.8 » » 25.6 0.6 0.4 3.2 0.4 » » 25.2 0.8 0.2 · · » » 63.4 · · · · » » » » 5.9 · · · Darwin Airport 193.0 100 9 33.0 8.0 15.8 · · 0.8 2.4 0.4 21.6 29.0 · 0.4 · · 1.4 52.2 22.6 · · · · · 5.4 · · · · · · · Darwin Botanic Gardens 131.6 105 8 64.4 8.0 6.2 12.4 12.0 0.4 10.8 13.0 0.8 1.6 2.0 Darwin Bowls Club 218.2 61.6 7.8 6.0 · · 12.6 7.8 0.4 11.8 13.6 0.6 1.8 0.4 · · 54.2 30.6 · · · · · 9.0 · · · · · · · Darwin Hospital 64.0 116 5 » » 17.2 5.8 4.8 2.0 1.0 » » 12.0 1.0 0.6 1.8 » » 16.2 » » » » 1.6 Darwin River Dam 294.4 87 10 41.0 101.0 5.6 · 3.0 28.2 23.2 · · 10.0 2.0 · · 8.2 18.0 27.6 · · · · · · 26.6 · · · · · · · Darwin River Ridge 289.2 45.8 104.6 4.4 · · 36.0 25.0 · 3.4 6.0 0.2 · · 4.2 0.6 41.4 · · · · · · 17.6 · · · · · · · Delamere Weapons Range 54.6 19 10 9.2 29.0 14.2 0.8 0.8 · · · 0.6 · · · · · · · · · · · · · · · · · Douglas River 203.2 47 10 » 95.0 » 60.0 » 10.0 5.6 · · · 9.0 · · 1.8 13.2 » » 8.6 · · · · · · · · · · · · Dum In Mirrie AWS 240.8 97 9 32.0 60.2 12.0 · 0.8 16.2 98.0 3.0 0.6 11.8 0.2 1.6 0.2 · · · 3.8 · · · · 0.4 · · · · · · · Edith Falls Ridge 135.4 27.0 17.2 11.2 65.0 1.2 2.6 · · · 0.2 8.0 2.6 · · · 0.4 · · · · · · · · · · · · · · Edith Farms Road 178.8 28.6 17.6 4.0 66.4 31.6 · 3.2 · 0.2 25.2 2.0 · · · · · · · · · · · · · · · · · · · Elizabeth Valley 187.3 94 10 9.8 39.6 26.2 22.0 20.2 1.2 4.8 4.8 0.8 36.7 15.6 5.6 Foelsche Headland 152.8 32.4 24.6 15.4 29.0 20.2 7.4 · · · 0.4 19.2 · · · · 4.2 · · · · · · · · · · · · · · Fort Hill Wharf 160.8 42.0 11.0 9.0 0.4 · 1.6 9.0 9.0 10.0 1.2 · 4.0 45.8 14.4 3.4 Geriatric Park 177.0 120 8 31.6 99.2 · 6.4 1.2 1.4 18.4 0.6 1.2 17.0 Honeymoon Hill · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Howard Springs Nature Park 196.2 94 10 23.8 30.6 19.6 0.6 · 1.2 0.6 0.2 3.4 3.6 12.6 1.4 0.8 · · 64.8 33.0 · · · · · · · · · · · · · Humpty Doo Collard Road 112.9 97 8 25.0 30.8 0.4 · 5.4 4.1 · 0.4 16.5 1.8 0.5 · · · 9.4 11.4 · · · · · 7.2 · · · · · · · · Humpty Doo Fire Station 140.0 » » » 69.0 » » 9.0 » » » 33.0 · · » » » » 29.0 · · · · · · · · · · · · Jabiru Airport 196.4 77 10 12.2 57.6 1.6 6.0 9.4 22.0 0.2 1.4 2.8 30.6 19.4 0.2 · 8.0 2.4 0.4 · · · · · · 22.2 · · · · · · · Jabiru Council 14.2 62.0 » 4.6 6.0 28.0 2.0 · 29.0 » 28.0 · · · · · · · · · · 13.4 · · · · · · · Jindare 216.6 38 10 32.0 53.0 27.0 15.0 · 60.0 · · · · 25.0 · · 2.6 · 2.0 · · · · · · · · · · · · · · Karama 62.5 100 6 6.3 0.3 7.1 0.6 1.5 8.2 0.4 2.1 17.6 14.8 · · · · 3.6 · · Katherine Aviation Museum 227.8 38 H 17.0 83.2 4.8 24.2 88.4 3.0 · · · 5.2 2.0 · · · · · · · · · · · · · · · · · · · Katherine Council 173.5 33 10 18.0 » » 104.0 46.5 4.0 · · » » 1.0 · · · · · · · · · · · · · · · · · · · Katherine Research Farm 181.0 34 H 23.4 72.4 6.0 20.0 54.4 · · · · 3.4 1.4 · · · · · · · · · · · · · · · · · · · Lambell's Lagoon 274.9 103 10 22.0 87.0 14.5 1.2 5.0 14.0 22.0 38.0 71.2 Leanyer 143.6 99 9 60.0 12.4 12.0 · 0.8 0.2 9.8 0.8 4.8 8.0 0.6 1.2 0.6 · · 17.2 10.0 · · · · · 5.2 · · · · · · · Litchfield 354.0 61 H 68.4 83.0 13.0 · 50.0 1.2 3.8 · · » » 1.2 · 106.0 4.2 23.2 · · · · · · · · · · · · · · Majestic Orchids 345.8 26.0 63.2 16.8 1.2 0.2 85.2 55.2 · 0.6 22.6 7.0 0.2 · 12.5 · 32.4 1.6 0.1 · · · · 21.0 · · · · · · · Mango Farm 356.8 60 H 132.2 72.2 15.6 25.0 51.4 15.2 0.4 · · · 9.6 · » » 32.2 3.0 · · · · · · · · · · · · · · Mary River Rangers 158.4 79 9 » 50.0 23.0 8.6 17.4 33.4 » » » 2.8 7.4 6.0 9.8 McMinns Lagoon 152.4 97 8 30.0 37.6 0.2 0.2 3.6 13.0 0.2 3.6 32.8 3.4 1.0 15.2 8.0 3.4 0.2 Middle Point AWS 297.8 8.6 39.6 110.8 26.4 0.4 9.6 10.4 10.0 29.0 0.2 · · · 52.6 0.2 · · · · · · · · · · · · Mount Bundy Station 86.0 Mount Felix 159.4 21.4 42.8 17.4 33.0 15.8 8.8 · · 0.4 10.2 9.6 · · · · · · · · · · · · · · · · · · · Mount Stow 156.2 30.4 9.0 31.0 48.4 7.2 2.2 0.2 · 0.8 0.6 2.6 · · · · 23.6 0.2 · · · · · · · · · · · · · Nightcliff Sports Club 196.4 85 10 66.4 3.2 12.2 · 1.2 0.2 3.6 0.8 28.4 38.4 · 0.4 · · 4.6 17.6 9.8 · · · · · 9.4 · · · · · · 0.2 Nitmiluk Rangers 250.8 45 H 16.0 97.0 6.2 61.6 62.4 0.5 · · 4.5 2.6 · · · · · · · · · Nitmiluk Ridge 226.4 12.6 88.8 5.0 57.2 52.4 · · · · 4.4 5.8 0.2 · · · · · · · · · · · · · · · · · · Noonamah AWS 163.8 9.2 39.8 23.2 0.8 0.2 16.2 18.8 0.2 1.2 4.4 4.4 0.4 · · 0.4 22.2 16.6 0.2 · · · · 5.6 · · · · · · · Northlakes 156.0 102 8 44.0 14.0 7.8 · · 1.0 1.0 · 16.6 20.0 · 1.2 · · · 24.6 16.6 · · · · · 9.2 · · · · · · · Oenpelli 281.0 80 10 29.8 » » 44.4 » 48.6 0.4 · » 48.0 13.0 » » 34.0 3.8 » 1.0 · · » » » » » » » 11.6 · · · Oolloo 163.0 35 10 27.0 29.4 1.0 25.6 1.0 37.0 · · · · 21.0 · · · 2.0 19.0 · · · · · · · · · · · · · · Palmerston 153.1 75 8 21.0 16.2 » 11.8 0.2 3.6 6.4 0.2 2.8 » 20.6 2.2 · · · 55.8 » 12.0 · · · · 0.3 · · · · · · · Pine Creek Council 295.6 69 10 29.8 36.0 8.6 6.4 23.0 119.0 · · · · 68.8 · · 1.6 · 2.4 · · · · · · · · · · · · · · Pinelands 116.2 21.0 8.6 18.6 · · 0.4 2.2 0.2 3.8 16.0 0.4 0.2 · · · 26.6 13.8 · · · · · 4.2 0.2 · · · · · · Pirlangimpi 424.2 149 10 1.8 56.0 9.0 2.8 81.8 30.8 11.2 19.6 46.4 0.6 0.4 43.4 19.2 · 12.8 7.6 46.0 · · · · 34.8 · · · · · · · Point Fawcett 339.8 118 10 7.0 32.6 2.2 1.2 · 82.6 3.8 50.2 6.4 23.2 · 24.0 14.0 11.0 4.8 · 76.4 · 0.2 · · · · · · 0.2 · · · · Point Stuart AWS 362.0 59.6 49.2 0.6 39.8 22.4 57.8 1.0 · 2.6 15.0 0.4 0.8 69.4 37.8 5.4 0.2 · · · · · · Point Stuart 364.1 119 10 90.2 32.0 13.0 44.8 · » 14.8 · · 18.2 » 3.8 2.3 1.2 12.0 120.4 2.0 · · · · 9.4 · · · · · · · · Port Keats Aero 242.4 52.8 111.4 24.0 0.4 6.4 44.2 · 1.6 · · · 1.4 · · · 0.2 · · · · · · · · · · · · · · Rankin Point 278.6 47.0 80.0 12.5 2.5 0.1 4.5 55.0 · 12.0 7.0 · · · 1.0 3.0 41.0 1.0 · · · · · 12.0 · · · · · · · Shoal Bay 143.8 88 8 39.0 10.0 10.0 0.2 6.0 0.4 14.8 1.0 10.0 2.4 · 2.0 · 0.4 · 34.0 11.8 · · · · · 1.8 · · · · · · · South Alligator Resort 401.0 89 H 110.0 3.0 80.0 16.0 15.0 12.0 · · 24.0 35.0 4.0 · · 80.0 13.0 · · · · · · · · 9.0 · · · · · · Southport 157.6 26.4 61.2 5.0 · · 19.0 24.2 · · 10.0 3.8 1.0 · 0.4 · 4.6 · · · · · · 2.0 · · · · · · · Stokes Hill 194.0 74 10 51.4 9.2 4.4 · · 0.8 33.6 · 10.0 9.6 0.6 · · · 3.4 45.0 24.8 · · · · · 1.2 · · · · · · · Territory Wildlife Park 244.8 69 H » » 90.0 · · 20.0 23.8 · · 28.0 15.0 · · » » 68.0 · · · · · · · · · · · · · · The Chase 147.2 21.2 26.8 17.0 · 0.4 6.0 8.8 · 3.0 24.0 0.4 0.2 0.4 · 0.2 32.8 5.8 0.2 · · · · · · · · · · · · Thorak Cemetery 100.5 76 8 30.4 · · 31.0 2.0 0.5 5.5 0.5 · · 29.0 » 1.6 · · · · · · · · · · · · · · · · · Tindal RAAF 96.6 36 9 22.2 30.0 14.0 16.2 12.8 0.2 · · · 1.0 0.2 · · · · · · · · · · · · · · · · · · · Tipperary 265.6 39 10 42.2 · · 162.6 35.2 · 4.2 · · · · · · · 2.2 · · 19.2 · · · · · · · · · · · · Upper Adelaide River 300.6 85.6 59.0 19.2 13.0 9.2 31.2 0.4 2.8 · 3.2 25.2 0.8 · 18.4 · 32.4 0.2 · · · · · · · · · · · · · Upper Seventeen Mile Creek 204.8 24.4 28.4 7.4 55.2 69.4 1.6 · · · 3.0 13.4 · · · · 2.0 · · · · · · · · · · · · · · Wagait Beach 298.0 96 10 114.6 54.4 » 6.6 10.2 1.0 39.0 0.4 » » 24.6 9.0 0.4 · · » » 34.8 · · · · · · · · 3.0 · · · Walker Creek 324.5 63 H 107.6 82.4 61.0 1.2 6.0 14.8 2.4 0.6 3.6 2.2 30.5 2.6 9.6 Wildman Rangers 86.0 Yeuralba Ridge 158.2 22.6 81.2 13.4 16.0 7.0 5.6 0.2 · · 0.6 11.6 · · · · · · · · · · · · · · · · · · · Arnhem (14BC) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Alyangula Police 304.5 180 9 23.4 15.8 56.4 » » 80.9 12.4 20.2 27.4 33.2 8.2 0.6 » » 3.0 · · · · · · 23.0 · · · · · · · · Cape Wessel 353.2 154 10 7.0 0.2 17.0 36.0 4.0 4.0 11.0 2.0 · · 37.0 18.0 57.0 12.0 12.0 7.0 · · · · · 28.0 · 86.0 3.0 3.0 3.0 6.0 · · Cape Wilberforce 162.1 17.5 9.0 0.2 2.0 2.0 4.0 » 2.0 9.0 » 33.5 27.0 13.5 11.0 1.4 8.0 · · · · 0.4 10.0 11.0 0.2 0.4 · · · · · Gove Airport 492.4 223 9 37.0 18.6 1.6 5.2 19.2 19.6 27.6 6.0 34.6 6.6 51.6 149.0 47.4 7.4 14.2 · · · 0.2 · 2.6 5.6 30.4 · 7.0 0.2 0.2 · · 0.6 Groote Eylandt Airport AWS 268.4 162 9 55.2 28.4 105.4 0.2 10.0 20.8 19.2 1.2 · 0.6 0.2 · · · · · · · 26.6 · · · 0.2 · · · 0.4 Lake Evella 465.6 139 H 38.0 24.0 18.2 42.0 26.0 5.6 6.4 26.0 18.8 8.6 44.0 26.0 2.4 57.0 4.4 · · · · · · 44.0 56.0 14.0 · · 4.2 · · · Maningrida Aero 350.8 77.4 33.2 92.0 35.2 1.2 30.2 0.4 7.2 2.8 15.4 8.2 0.2 28.2 18.8 0.4 · · · · · · · · · · · · · · · Milingimbi AWS 403.2 83.2 46.0 34.4 1.2 6.8 99.4 2.0 10.2 0.2 11.6 64.2 13.8 · 29.0 0.8 · · · · · · · 0.4 · · · · · · · Ngayawili 189.6 192 8 34.6 25.6 14.0 0.4 16.2 12.2 1.6 · 2.6 14.8 3.6 28.6 · 24.6 · 3.4 · · · · · 7.2 · · 0.2 · · · · · DTW 433.6 235 9 30.0 12.5 1.5 · 26.2 1.2 13.5 24.5 97.0 · 62.0 » 75.2 7.0 27.0 · · · · · 2.0 23.0 · · 29.0 · · · · 2.0 North East Island 552.0 174 9 68.6 26.4 28.4 36.0 62.0 91.8 37.6 3.2 70.4 67.8 1.6 7.6 5.8 0.2 2.0 · · · · · · 42.6 · · · · · · · · Warruwi 97.6 120 7 59.2 · · · · · 17.4 21.0 · · · · · · · · · · · · · · · · · · · Yirrkala Tropical Gardens 565.0 231 10 24.0 39.0 4.0 1.0 67.0 6.0 42.0 11.0 » 15.0 30.0 148.0 48.0 4.0 15.0 3.0 11.0 90.0 5.0 2.0

page 15 Monthly Weather Review Northern Territory April 2011

Daily and total rainfall for April 2011 Total is the total precipitation for April 2011; a missing total indicates there is concern about the quality of some of the daily values. Avg is the long-term average total precipitation for April. Decile is the decile rank of total precipitation for April 2011 in the climate record of other April totals; “L” indicates this is the lowest on record, and “H” it is the highest on record. Long-term average and decile rank are only shown if there are sufficient years of climate record available. Reports of zero precipitation are shown as “· ”. When a reading was accumulated over more than one day, “»” is shown on the days that are part of the accumulation.

Roper-Mcarthur (14DE) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Benmara 16.0 23 7 8.2 7.2 0.6 Bing Bong Port 199.3 78 9 113.5 58.5 17.0 · · · · · 5.8 4.5 · · · · · · · · · · · · · · · · · · · · Borroloola 229.8 56 10 95.8 75.6 8.4 4.2 0.2 34.4 11.2 · · · · · · · · · · · · · · · · · · · · · · · Bulman AWS 133.6 16.8 9.2 10.0 22.2 4.8 25.0 5.0 1.0 9.8 18.8 10.6 · · 0.2 · · · · · · · · 0.2 · · · · · · · Calvert Hills 17.0 28 7 9.2 7.0 0.8 · · · · · · · · · · · · · · · · · · · · · · · · · · · Cave Creek Station 107.3 11.0 8.5 47.2 3.8 18.8 15.4 1.6 1.0 Central Waterhouse 103.2 25.8 41.4 3.2 5.4 2.6 0.4 · · · 0.2 24.2 · · · · · · · · · · · · · · · · · · · Centre Island 233.8 85 10 76.2 101.8 34.0 12.2 · · · · 0.2 9.4 · · · · · · · · · · · · · · · · · · · · Coodardie 148.2 7.0 16.8 46.4 8.8 15.4 39.8 1.4 · · 12.6 · · · · · · · · · · · · · · · · · · · · Daly Waters AWS 107.6 21 10 28.0 47.2 1.8 0.4 30.0 0.2 · · · · · · · · · · · · · · · · · · · · · · Daly Waters 119.8 23 10 19.5 59.6 4.5 · 36.2 · · · · · · · · · · · · · · · · · · · · · · · · · Gallipoli 4.5 7.2 4.6 Gilnockie 93.6 21 10 53.6 11.0 4.0 25.0 Gorrie 185.0 19 H 11.0 9.2 37.4 8.0 12.4 107.0 · · · · · · · · · · · · · · · · · · · · · · · · Hidden Valley 135.7 18 H 16.5 31.5 61.5 26.2 King Ash Bay 312.8 103.4 122.0 16.6 5.4 3.0 0.4 · · · 62.0 · · · · · · · · · · · · · · · · · · · · Lakefield 90.2 18.6 46.2 2.6 22.8 Larrimah 80.0 32 9 14.6 43.6 10.6 4.0 1.0 5.6 · · 0.6 · · · · · · · · · · · · · · · · · · · · · Limmen River 189.6 53.0 82.0 23.0 4.0 23.4 4.2 Mallapunyah 218.0 18 H 58.0 93.0 4.0 30.0 · 29.0 4.0 · · · · · · · · · · · · · · · · · · · · · · · Maranboy Hill 189.2 40.8 33.4 30.8 15.6 7.6 29.0 · · · 31.2 · 0.8 · · · · · · · · · · · · · · · · · · Mataranka Council 159.5 16 H · · 67.0 25.0 55.0 · · · · 12.5 · · · · · · · · · · · · · · · · · · · · Mataranka Homestead Resort 89.8 31 9 41.0 5.2 19.0 24.6 McArthur River Mine 79.4 28 10 56.6 13.2 1.2 0.6 6.2 1.6 · · · · · · · · · · · · · · · · · · · · · · · · Nathan River 135.4 43 10 37.4 58.0 9.8 0.6 5.6 24.0 Ngukurr 97.2 55 9 53.8 18.6 3.4 0.1 · 17.8 · · 2.9 0.6 · · · · · · · · · · · · · · · · · · · · Nutwood Downs 95.8 25 10 11.4 13.0 34.8 1.8 21.4 13.4 Redbank Mine 19.7 38 5 9.2 6.4 1.7 2.4 · · · · · · · · · · · · · · · · · · · · · · · · · · Snowdrop Creek 116.6 10.2 1.4 3.6 29.0 1.4 30.6 · · 8.4 31.2 0.2 · · 0.2 · 0.4 · · · · · · · · · · · · · · Sunday Creek Station 94.1 10.0 22.4 35.8 2.0 1.5 22.4 Upper Waterhouse River 117.6 30.6 14.2 0.2 48.0 8.2 5.6 · · 4.4 6.0 · 0.2 · · · · · · · 0.2 · · · · · · · · · · West Waterhouse 64.6 25.0 6.4 0.8 6.0 16.8 1.2 0.2 0.2 · 3.8 2.0 2.0 0.2 · · · · · · · · · · · · · · · · · Wollogorang 20.5 38 6 10.4 7.1 3.0 · · · · · · · · · · · · · · · · · · · · · · · · · · · Victoria (14F) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Bradshaw Homestead 131.2 25 10 14.4 30.0 21.0 39.0 24.4 2.0 0.4 · · · · · · · · · · · · · · · · · · · · · · · Bullita 46.0 21 9 6.6 5.6 18.6 9.6 5.6 Keep River Rangers 108.3 25 10 2.5 4.6 23.8 69.0 8.0 0.4 · · · · · · · · · · · · · · · · · · · · · · · · Kidman Springs 64.3 23 10 4.2 4.8 32.9 9.0 11.4 · · · · · 2.0 · · · · · · · · · · · · · · · · · · · Killarney 43.5 25 9 16.0 10.0 7.0 10.0 0.5 Lajamanu 49.0 14 10 3.8 5.2 21.4 17.4 1.2 · · · · · · · · · · · · · · · · · · · · · · · · · Limbunya 39.6 18 9 3.4 6.0 10.2 20.0 · · · · · · · · · · · · · · · · · · · · · · · · · · Mount Sanford 44.4 14 9 8.0 8.0 17.0 7.0 4.4 · · · · · · · · · · · · · · · · · · · · · · · · · Old Delamere 90.6 14 10 3.0 29.2 43.2 14.0 1.2 · · · · · · · · · · · · · · · · · · · · · · · · · Pigeon Hole 6.2 10.0 14.6 2.0 Riveren 29.0 19 9 24.0 5.0 Rosewood 90.4 19 10 13.2 11.2 66.0 Shoeing Tool Bore 37.4 8.8 7.6 18.2 2.6 0.2 · · · · · · · · · · · · · · · · · · · · · · · · · Sunshine Bore 42.0 3.0 19.8 10.8 7.6 0.8 · · · · · · · · · · · · · · · · · · · · · · · · · Suplejack 38.0 22 8 » 12.0 26.0 Timber Creek 69.7 30 9 7.8 30.0 16.3 14.0 1.4 · · 0.2 · · · · · · · · · · · · · · · · · · · · · · Top Springs Roadhouse 31.0 11.0 19.0 1.0 · · · · · · · · · · · · · · · · · · · · · · · · · · · Upper Victoria River 64.4 5.4 14.6 19.0 15.4 10.0 · · · · · · · · · · · · · · · · · · · · · · · · · Victoria River Downs 91.2 23 10 8.4 3.0 53.2 14.2 5.0 6.2 · · 1.2 · · · · · · · · · · · · · · · · · · · · · Waterloo 94.3 14 10 11.0 8.0 · 66.5 8.8 · · · · · · · · · · · · · · · · · · · · · · · · · Wave Hill 30.4 19 9 5.4 12.4 10.0 0.8 1.8 · · · · · · · · · · · · · · · · · · · · · · · · · Barkly (15A) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Brunette Downs 37.4 15 9 16.0 14.6 4.6 2.2 · · · · · · · · · · · · · · · · · · · · · · · · · · Helen Springs 34.6 13 10 12.8 10.8 11.0 Soudan 8.9 14.4 Tennant Creek Airport 20.4 15 8 6.8 4.4 8.4 · 0.8 · · · · · · · · · · · · · · · · · · · · · · · · · Warramunga 20.3 11 8 1.6 4.2 14.2 0.1 0.2 · · · · · · · · · · · · · · · · · · · · · · · · · Alice Springs (15B) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Alice Springs Airport · 16 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Ammaroo · 16 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Argadargada · 15 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Arltunga · 16 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Atula · 15 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Claraville · 19 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Curtin Springs · 16 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · East Dam · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Epenarra 5.4 12 8 · 2.2 3.2 · · · · · · · · · · · · · · · · · · · · · · · · · · · Gemtree Park · 24 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Hermannsburg · 16 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Jervois · 17 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Kulgera 0.4 14 4 0.4 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Manners Creek · · Mount Riddock · 21 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Mount Skinner · 19 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Ormiston Gorge · 15 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Palm Valley · 23 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Papunya · 15 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Rabbit Flat 13.4 22 7 · 0.6 · 2.6 9.4 0.8 · · · · · · · · · · · · · · · · · · · · · · · · Ross River · 20 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Territory Grape Farm · 18 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Trephina Gorge · 26 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Waite River · 19 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Wallace Rock Hole · 20 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Walungurru · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Watarrka 0.1 14 3 0.1 Woodgreen · 19 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Yuendumu · 23 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Yulara Aero · 13 L · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

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