Friday 16 April 2021 MORNING Time of Issue: 0800 Hours IST ALL INDIA WEATHER SUMMARY and FORECAST BULLETIN
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Friday 16 April 2021 MORNING Time of Issue: 0800 hours IST ALL INDIA WEATHER SUMMARY AND FORECAST BULLETIN Significant Weather Features ♦ A Western Disturbance as a trough in mid & upper tropospheric westerlies with its axis at 3.1 km above mean sea level runs roughly along longitude 65°E to the north of latitude 20°N with an induced cyclonic circulation over Central Pakistan & adjoining West Rajasthan and another cyclonic circulation lies over Haryana & neighbourhood in lower levels. Under the influence of these systems: i) Fairly widespread to widespread rainfall with thunderstorm, lightning & gusty winds (30-40 kmph) over Western Himalayan Region during 16th-17th April. Isolated hailstorm likely over Jammu, Kashmir, Ladakh, Gilgit-Baltistan & Muzaffarabad and Himachal Pradesh on 16th and over Uttarakhand on 16th & 17th April. Isolated heavy rainfall also very likely over Jammu, Kashmir, Ladakh, Gilgit- Baltistan & Muzaffarabad and Himachal Pradesh on 16th & 17th April. ii) Isolated light rainfall with thunderstorm, lightning & gusty winds (30-40 kmph) over adjoining plains of Northwest India during 16th-17th April. Isolated hailstorm also likely over Punjab, Haryana, Chandigarh & Delhi, East Rajasthan and West Uttar Pradesh on 16th April. Duststorm at isolated places likely over West Rajasthan on 16th April and over East Rajasthan on 16th & 17th April, 2021. ♦ Under the influence of a trough/wind discontinuity from Southeast Arabian Sea off Kerala coast to North Interior Karnataka across South Interior Karnataka in lower levels; Scattered to fairly widespread rainfall with thunderstorm, lightning & gusty winds (30-40 kmph) very likely over south Peninsular India during next 24 hours. Isolated heavy rainfall also likely over Kerala & Mahe and Tamil Nadu, Puducherry & Karaikal during next 24 hours. The rainfall activity over south peninsular India is very likely to reduce from 17th April. ♦ Under the influence of moisture feed from Bay of Bengal in lower tropospheric levels; rainfall activity over Northeast India is very likely to increase from 17th April. Thunderstorm, lightning & gusty winds (30-40 kmph) are very likely over Arunachal Pradesh, Assam & Meghalaya and Nagaland, Manipur, Mizoram & Tripura during 16th-20th April with possibility of isolated heavy falls over Arunachal Pradesh and Assam & Meghalaya during 17th-20th April. Main Weather Observations ♦ Rain/Thundershowers observed (from 0830 hours IST to 1730 hours IST of yesterday): at most places over Jammu, Kashmir, Ladakh, Gilgit-Baltistan & Muzaffarabad; at a few places over Sub-Himalayan West Bengal & Sikkim, South Interior Karnataka, Tamilnadu, Puducherry & Karaikal, Lakshadweep and Andaman & Nicobar Islands and at isolated places over Chhattisgarh, Madhya Maharashtra and Kerala & Mahe. ♦ Rainfall recorded (from 0830 hours IST to 1730 hours IST of yesterday) (1 cm or more): Madurai-5; Agathi-3; Gulmarg-2; Kupwara, Srinagar, Darjeeling, Bolangir and Kodaikanal-1 each. ♦ Thunderstorm observed (from 2030 hours IST of yesterday to 0530 hours IST of today): at isolated places over Assam & Meghalaya and Tamilnadu, Puducherry & Karaikal. ♦ Yesterday, heat Wave conditions were observed in isolated pockets over Haryana & Delhi. ♦ Maximum Temperature Departures as on 15-04-2021: Maximum temperatures were appreciably above normal (3.1°C to 5.0°C) at many places over Uttarakhand, Haryana, Chandigarh & Delhi, West Uttar Pradesh; at a few places over Nagaland, Manipur, Mizoram & Tripura; at isolated places over Himachal Pradesh and Assam & Meghalaya; above normal (1.6°C to 3.0°C) at many places over Konkan & Goa; at a few places over Arunachal Pradesh and Gangetic West Bengal; at isolated places over West Madhya Pradesh, Saurashtra & Kutch, Bihar and Odisha. They were markedly below normal (-5.1°C or less ) at a few places over Jammu, Kashmir, Ladakh, Gilgit, Baltistan & Muzaffrabad; at isolated places over Vidarbha; appreciably below normal (-3.1°C to -5.0°C) at many places over Rayalaseema; at a few places over East Madhya Pradesh, Chhattisgarh, Telangana, Madhya Maharashtra, Tamilnadu, Puducherry & Karaikal and Andaman & Nicobar islands; below normal (-1.6°C to -3.0°C) at many places over Coastal Andhra Pradesh & Yanam; at a few places over Karnataka; at isolated places over Kerala & Mahe and near normal over rest parts of the country. Yesterday, the highest maximum temperature of 42.4°C was reported at Banda (East Uttar Pradesh). ♦ Minimum Temperature Departures as on 15-04-2021: Minimum temperatures were markedly above normal (5.1°C or more) at a few places over West Rajasthan, East Madhya Pradesh and East Uttar Pradesh; appreciably above normal (3.1°C to 5.0°C) at many places over Punjab; at a few places over Bihar and West Madhya Pradesh; at isolated places over Himachal Pradesh, Gangetic West Bengal, West Uttar Pradesh; above normal (1.6°C to 3.0°C) at most places over Jharkhand, at many places over Uttarkhand, Haryana, Chandigarh& Delhi, East Rajasthan, Sub Himalayan West Bengal & Sikkim, at isolated places over Gujarat, Assam& Meghalaya, Andaman & Nicobar Islands. They were appreciably below normal (-3.1°C to -5.0°C) at many places over Rayalseema; at a few places over Tamil Nadu, Puducherry& Karaikal and Telangana; at isolated places over Vidarbha and Marathwada and below normal (-1.6°C to -3.0°C) at many places over Coastal Andhra Pradesh and Madhya Maharashtra and at isolated places over South Interior Karnataka and Kerala & Mahe and near normal over rest parts of the country. Yesterday, the lowest minimum temperature of 16.7°C was reported at Fatehgarh (East Uttar Pradesh) over the plains of the country. * Red color warning does not mean "Red Alert" Red color warning means "Take Action". Forecast and Warning for any day is valid from 0830 hours IST of day till 0830 hours IST of next day For more details kindly visit www.imd.gov.in or contact : +91 11 24631913, 24643965, 24629798 (Service to the Nation since 1875) Meteorological Analysis (Based on 0530 hours IST) ♦ The Western Disturbance as a trough in mid & upper tropospheric westerlies with its axis at 3.1 km above mean sea level roughly along longitude 65°E to the north of latitude 20°N persists. ♦ The induced cyclonic circulation over Central Pakistan & adjoining West Rajasthan at 1.5 km above mean sea level persists. ♦ The cyclonic circulation over Haryana & neighbourhood extending upto 0.9 km above mean sea level persists. ♦ The cyclonic circulation over Vidarbha & neighbourhood between 3.1 km & 5.8 km above mean sea level persists. ♦ The cyclonic circulation over north Gangetic West Bengal & neighbourhood extending upto 2.1 km above mean sea level persists. ♦ The trough/wind discontinuity from Southeast Arabian Sea off Kerala coast to North Interior Karnataka across South Interior Karnataka at 0.9 km above mean sea level persists. ♦ A fresh Western Disturbance likely to affect Western Himalayan Region from the night of 19th April, 2021. Weather Forecast for next 5 days * upto 0830 hours IST of 21st April, 2021 ♦ Meteorological sub-division wise detailed 5 days precipitation forecast is given in Table-1. ♦ Fall in maximum temperatures by 2-4°C over Northwest India during next 2-3 days. ♦ No significant change in maximum temperatures over Central India during next 24 hours and rise by 2-4°C thereafter. ♦ Rise in maximum temperatures by 2-4°C over Madhya Maharashtra and Marathawada during next 2 days and no significant change thereafter. ♦ Fall in maximum temperatures by 2-3°C over most parts of Gujarat during next 24 hours and no significant change thereafter. ♦ No significant change in maximum temperatures over rest parts of the country during next 4-5 days. Weather Outlook for subsequent 2 days from 21st April, 2021 to 23rd April, 2021 ♦ A fresh Western Disturbance likely to affect Western Himalayan Region from the night of 19th April, 2021. Under its influence, fairly widespread to widespread rainfall/snowfall over the region during 20th-22nd April. ♦ Isolated to scattered rainfall with thunderstorm/lightning likely over parts of Northeast India and Andaman & Nicobar Islands. ♦ Fairly widespread rainfall likely over Kerala & Mahe and isolated rainfall over South Interior Karnataka and Tamil Nadu, Puducherry & Karaikal. ♦ Dry weather likely over rest parts of the country. * Red color warning does not mean "Red Alert" Red color warning means "Take Action". Forecast and Warning for any day is valid from 0830 hours IST of day till 0830 hours IST of next day For more details kindly visit www.imd.gov.in or contact : +91 11 24631913, 24643965, 24629798 (Service to the Nation since 1875) Weather Warning during next 5 days * 16 April (Day 1): ♦ Thunderstorm with lightning, hail & gusty wind (speed reaching 30-40 kmph) at isolated places over Jammu & Kashmir, Ladakh, Gilgit-Baltistan & Muzaffarabad, Himachal Pradesh, Uttarakhand, Haryana, Chandigarh & Delhi, Punjab, West Uttar Pradesh and Sub-Himalayan West Bengal & Sikkim; with lightning & gusty wind (speed reaching 40-50 kmph) at isolated places over Jharkhand, Assam & Meghalaya and Nagaland, Manipur, Mizoram & Tripura; with lightning & gusty wind (speed reaching 30-40 kmph) at isolated places over Chhattisgarh, Gangetic West Bengal, Arunachal Pradesh and Kerala & Mahe and with lightning at isolated places over East Uttar Pradesh, West Madhya Pradesh, Vidarbha, Bihar, Odisha, Andaman & Nicobar Islands, Coastal Andhra Pradesh & Yanam, Rayalaseema, Telangana, Coastal & South Interior Karnataka, Tamilnadu, Puducherry & Karaikal and Lakshadweep. ♦ Heavy