District Average Rainfall “ Actual & Normal” Annexure-"CB" from June 1St to September 30Th 2018
Total Page:16
File Type:pdf, Size:1020Kb
INDEX S. No. Particulars Page No. 1 Rainfall Status of Monsoon Year – 2018 1 2 Introduction 2-3 3 IMD and its Long Range Forecast for 2018 4 4 Salient features of monsoon 2018 5-27 6 Annexures 28-80 Rainfall A District wise status of rainfall (Year 2018) 28 B Tehsil wise status of rainfall 29-36 District wise monthly average rainfall with deviation from C 37-38 normal (Year 2018) District wise monthly average rainfall with deviation from D 39-40 normal (Year 2014-18) E Maximum one day rainfall (100mm and above) 41-45 Storage Status of total water storage as on 30th September for tanks F 46 having capacity more than 4.25 MCUM (Year 1990-2018) Abstract of fully filled , partially filled and empty tanks G 47 (Year 2014-18) Gauge and capacity of tanks on 30th September having H 48-59 capacity above 4.25 MCUM (Year 2014-18) Gauge and capacity of tanks on 30th September having I 60-73 capacity below 4.25 MCUM (Year 2014-18) District wise position of over flown tanks during monsoon, J 74-79 2017 & 2018 K Year wise position of over flown tanks (2004 to 2018) 80 MONSOON MAP OF RAJASTHAN GANGANAGAR HANUMANGARH YEAR - 2018 CHURU Ü JHUNJHUNU BIKANER ALWAR SIKAR BHARATPUR NAGAUR JAISALMER JAIPUR DAUSA JODHPUR DHAULPUR KARAULI AJMER TONK SAWAI MADHOPUR BARMER PALI BHILWARA BUNDI KOTA JALORE RAJSAMAND CHITTAURGARH BARAN CHITTAURGARH Category Of Rainfall SIROHI JHALAWAR Abnormal (+60% or More) (0) UDAIPUR Excess (+59% To +20%) (6) PRATAPGARH Normal (+19% To -19%) (20) Deficit (-20% To -59%) (6) DUNGARPUR Scanty (-60% or Less) (1) BANSWARA Introduction The present report on the 2018 South-West monsoon season is prepared and published by Water Resources Department, Rajasthan that brings out detailed analysis of monitoring and forecasting aspects of the southwest monsoon. This report discusses about spatial and temporal variability of the rainfall, important features of rainfall and tank gauge, peculiarities of the pattern, onset ,advancement and withdrawal of the monsoon during the season. Over all, this report provides useful and authentic information about the 2018 south- west monsoon season for operational forecasters, researchers and other users. Our heartfelt gratitude to Indian Meteorological Department (IMD) & Revenue Department Government of Rajasthan for providing us information related to monsoon on time. 2 Copyright © Water Resources Department, Rajasthan 2018 The right of publication in print, electronic or any other form is reserved with the Water Resources Department, Rajasthan. Short extracts may be reproduced, however the source should be clearly indicated. DISCLAIMER & LIMITATIONS • The contents published in this report have been checked and authenticity assured within limitations of human errors. • Water Resources Department, Rajasthan is not responsible for any errors and omissions. • The geographical boundaries shown in this report do not necessarily correspond to the political boundaries. 3 Indian Meteorological Department (IMD) LONG RANGE FORECAST BY IMD FOR 2018 IMD forecast method The update forecast for the southwest monsoon season (June-September) rainfall over the country as a whole is issued using following Parameter Ensemble Forecasting System. • NE Pacific to NW Atlantic SST Anomaly Gradient (December + January), • Southeast Equatorial Indian Ocean Sea Surface Temperature (February), • East Asia Mean Sea Level Pressure (February + March), • Central Pacific (Nino 3.4) Sea Surface Temperature Tendency (March to May - December to February), • North Atlantic Mean Sea Level Pressure (May) and North Central Pacific 850 Zonal Wind gradient (May). Terminology used by I.M.D. in weather bulletins (a ) Intensity of Rainfall 1. 0.1 mm - 07.5 mm In 24 hrs Light Rain 2. 07.6 mm-35.5 mm In 24 hrs Moderate Rain 3. 35.6 mm-64.4 mm In 24 hrs Rather Heavy Rain 4. 64.5 mm-124.4 mm In 24 hrs Heavy Rain 5. Exceeding 124.4 mm In 24 hrs Very Heavy Rain (b) Spatial distribution of Weather phenomenon (Percentage Area Covered) S. No. Percentage Terminology Used 1. 01 to 25 Isolated 2. 26 to 50 Scattered 4. 51 to 75 Fairly Wide Spread 5. 76 to 100 Wide Spread (c) Category S. No. Category 1. Abnormal 60% or more 2. Excess 20% to 59% 3. Normal 19% to (-)19% 4. Deficit (-)20% to (-)59% 5. Scanty (-)60% or less 4 Salient Features Of Monsoon 2018 Monsoon 2018 was different in many sense and this chapter will describe it’s special features, events that took place, impacts in the vulnerable areas, challenges and success story of the department Onset and advancement of Monsoon Progress of South west monsoon 2018 (source: www. imd.gov.in) • 24th May 2018- The Cyclonic Storms ‘SAGAR’ and ‘MEKUNU’ which formed over the Arabian Sea, southerly to southwesterly winds prevailed over southeast Bay of Bengal and south Andaman Sea. • 25th May 2018- Southwest monsoon set in over south Andaman sea, some parts of south bay of Bengal and Nicobar Island. 5 • 27th May 2018- Advanced into some parts of south Arabian sea and Maldives – Comorian area. • 28th May 2018- Southwest monsoon covered the remaining parts of Andaman sea Andaman and Nicobar Island. • 29th May 2018 – Southwest monsoon set in over kerala. Three days ahead of its normal date of onsite. • 9th to 12th June 2018- the southwest monsoon advanced into most parts of northeast India and also covered parts of West Bengal, Odisha and Chhattisgarh. • 13th to 22nd June 2018- monsoon flow pattern weakened in general and this resulted in a ‘hiatus’ in the advance of southwest monsoon. This period was characterized by the shifting of the active convection zone over to the Pacific Ocean, which in-turn led to enhanced cyclogenesis and channeling of cross equatorial flow towards that region. • 23rd to 24th June 2018- After the hiatus, monsoon gradually progressed into more parts of Maharashtra, Gujarat, Madhya Pradesh and West Bengal. • 27th June 2018- some more parts of Gujarat region, some parts of East Rajasthan, remaining parts of Maharashtra, Chhattisgarh, Odisha, Bihar and Jharkhand, entire Madhya Pradesh & East Uttar Pradesh, most parts of West Uttar Pradesh, Uttarakhand & Himachal Pradesh, entire Jammu & Kashmir and some parts of Punjab. • 29th June 2018- further advanced into remaining parts of Gujarat State, Rajasthan and North Arabian Sea and thus the Southwest Monsoon covered the entire country two weeks earlier than the normal date of 15th July. Onset of monsoon in Rajasthan • Forth week of June- the southwest monsoon entered in Rajasthan through eastern part on June 27th , it further advanced rapidly and covered the entire state on 29th June 2018. 6 PERFORMANCE After analyzing the monsoon map of Rajasthan it clearly indicates that western part of the sate received deficit or scanty rainfall where as remaining part of state received normal or excess rainfall, except Hanumangarh district. Overall performances of monsoon remain normal in the state. • Status of districts as per rainfall received Category Number of districts Abnormal (60% or more) 0 Excess (20 to 50% ) 7 Normal (19 to -19%) 19 Deficit (-20 to -59%) 6 Scanty (-60% or less) 1 Peculiarities of Monsoon 2018 • Sawai Madhopur received maximum rainfall i.e. 265mm in a day on 3rd Sept 2018. Raingauge station Sawai Madhopur has also received the maximum rainfall during this monsoon season 1864mm against normal value of 664mm which is 178% higher than normal values. • In terms of percentage of water, state receives 60.61% of total storage capacity in tanks. • 142 numbers of tanks were fully filled out of 831 tanks. • Jalore received only 146.60mm rainfall, which is 62.8% less rainfall compare to normal value of 394.20mm, where as Sikar received highest rainfall i.e. 567.70mm which is 41.1% higher compare to normal value of 402.50mm during this monsoon season. 7 • Withdrawal of monsoon 2018 Isochrones of withdrawals of South west monsoon 2018 (source: www. imd.gov.in) SUCCESS STORY • In-spite of all odds against the department such as scarce field staff, meagre budget for exigency, machinery, insufficient number of vehicles, phenomenal rainfall at few places etc., officials of water resources department were vigilant in the field and successfully saved possible havoc at many places vulnerable to flood. • Central flood cell at ID&R, Jaipur worked around the clock. Officials deputed in the cell worked efficiently by making use of available means of technology such as whatsapp, email, web based support etc. Flood cell facilitated field staff with timely forecast received from IMD and distributed information received from field staff of upstream to other field person of downstream area to take timely action due to abnormal flow of water. • Pro-active approach of administrative and technical machinery led to a well coordinated system leaving no voids for any accident or mishappenings. SANJAY AGARWAL Deputy director (Hydrology), Water Resources, Jaipur 8 Cloud cover in Rajasthan Jaipur dated 23/08/2018 Jaipur dated 19/08/2018 9 Dams opening or overflow Panchna Dam, Karauli (dated 6/09/2018) 10 Bhawar Semla Dam, Pratapgarh (Dated 22/08/2018) Chhapi Dam, Jhalawar( dated 24/07/2018) 11 Overflow Ram Sagar Dam, Dholpur (Dated 8/09/2018) Ummed Sagar, Baran, overflow (Dated 22/07/2018) 12 Margia dam, Dungarpur (Dated 19/07/2018) Gagreen dam overflow, Jhalawar (Dated 18/07/0218) Parwan pickup weir (chahedia)( Dated 17/07/2018) 13 News paper 14 15 16 17 HIGHLIGHTS OF MONSOON – 2018 1. ABNORMAL MAXIMUM ONE DAY RAINFALL ( First Ten Raingauge Stations ) NAME OF RAINFALL S NO. DISTRICT DATE RAINFALL STATION IN (mm) 1 Sawai Madhopur Sawai Madhopur 3-Sep-18 265.0 2 Sawai Madhopur Sawai Madhopur (IMD) 3-Sep-18 240.0 3 Udaipur Som pick up weir* 26-Jun-18 237.0 4 Dungarpur Kanba 27-Jun-18 230.0 5 Banswara Mahi Dam* 23-Sep-18 206.0 6 Pratapgarh Gadola* 22-Aug-18 201.0 7 Tonk Thikriya* 21-Aug-18 200.0 8 Baran Baran 13-Jul-18 197.0 9 Dungarpur Galiakot 22-Aug-18 195.0 10 Sikar Neem Ka Thana 25-Jul-18 195.0 2.