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Press Information Bureau
Government of India
Ministry of Earth Science
23 NOV 2020 10:15AM by PIB Delhi
Isolated extremely heavy rainfall activity also very likely over Tamilnadu & Puducherry during 24th & 25th

According to the Cyclone Warning Division/ National Weather Forecasting Centre/Regional Meteorological Centre, New Delhi of the India Meteorological Department (IMD): (At 9.30 AM)

The Depression over southwest and adjoining southeast Bay of Bengal moved nearly northwestwards in past 06 hours and lay centred about 600 km south-southeast of Puducherry and 630 km south-southeast of Chennai. It is very likely to intensify into a cyclonic storm during next 24 hours. It is very likely to move northwestwards and cross Tamil Nadu and Puducherry coasts between Karaikal and Mamallapuram around 25th November 2020 afternoon.

Forecast track and intensity are given below:

Date/Time(IST)

Position

(Lat. 0N/ long. 0E)

Maximum sustained surface

wind speed (Kmph)

Category of cyclonic disturbance

23.11.20/0530

9.3/84.5

40-50 Gusting To 60

Depression

23.11.20/1730

10.0/83.4

55-65 Gusting To 75

Deep Depression

24.11.20/0530

10.3/82.3

65-75 Gusting To 85

Cyclonic Storm

24.11.20/1730

10.6/81.5

90-100 Gusting To 110

Severe Cyclonic Storm

25.11.20/0530

11.2/80.8

100-110 Gusting To 120

Severe Cyclonic Storm

25.11.20/1730

12.0/79.8

90-100 Gusting To 110

Severe Cyclonic Storm

26.11.20/0530

13.0/78.5

55-65 Gusting To 75

Deep Depression

 

Warnings:

(i) Rainfall

Under its influence, the rainfall activity is likely to increase over south peninsular India from 23rd November onwards with fairly widespread to widespread rainfall/thunderstorm activity over Tamilnadu, Puducherry & Karaikal during 24th to 26th November and over south Coastal Andhra Pradesh, Rayalaseema & Telangana during 25th to 26th November, 2020. Isolated extremely heavy rainfall activity also very likely over Tamilnadu & Puducherry during 24th & 25th and over south Coastal Andhra Pradesh & Rayalaseema on 25th & 26th and over Telangana on 26th November, 2020.

Sub-Divisions

23 Nov 2020*

24 Nov 2020*

25 Nov 2020*

26 Nov 2020*

Coastal Andhra Pradesh

Rainfall  at isolated places

Rainfall  at a few places with heavy rainfall at isolated places

Rainfall  at most places with isolated heavy to very heavy with extremely heavy falls

Rainfall  at most places with isolated heavy to very heavy with extremely heavy falls

Tamilnadu, Puducherry & Karaikal

Rainfall  at many places  with  heavy rainfall at isolated places

Rainfall at most places with heavy to very heavy  rainfall with extremely heavy falls at  isolated places

Rainfall  at most places with heavy to very heavy  rainfall at a few places and extremely heavy falls at  isolated places

Rainfall  at many places  with  heavy rainfall at isolated places

South Interior Karnataka

Rainfall  at isolated places

Rainfall  at a few  places

Rainfall  at a few  places with heavy rainfall at isolated places

Rainfall  at a few  places

Rayalaseema

Rainfall  at isolated places

Rainfall  at  many places with isolated heavy falls

Rainfall at most places with heavy to very heavy  rainfall with extremely heavy falls at  isolated places

Rainfall at most places with heavy to very heavy  rainfall with extremely heavy falls at  isolated places

Telangana

DRY

Rainfall  at  isolated places

Rainfall  at  a few places with isolated heavy falls

Rainfall at most places with heavy to very heavy  rainfall with extremely heavy falls at  isolated places

 

(ii) Wind warning

Squally weather with wind speed of 45-55 kmph gusting to 65 kmph likely over Southwest & adjoining west-central & southeast Bay of Bengal and along & off Tamil Nadu and south Andhra Pradesh coasts on 23rd November. It would increase gradually becoming 65-75 kmph gusting to 85 kmph over the southwest and adjoining westcentral Bay of Bengal  and 55-65 kmph gusting to 75 kmph along and off Tamil Nadu and adjoining  South Andhra Pradesh coast and over Gulf of Mannar from 24th November morning. It would further increase becoming 100-110 kmph gusting to 120 kmph over the southwest Bay of Bengal  along and off north Tamil Nadu and Puducherry coasts, 65-75 kmph gusting to 85 kmph very likely over adjoining  westcentral Bay along and off South Andhra Pradesh, Gulf of Mannar and along and off south Tamil Nadu coast from 25th November morning for subsequent 12 hrs.

 

(iii) Sea condition

Sea condition is rough to very rough over Southwest & adjoining west-central & southeast Bay of Bengal and along & off Tamil Nadu & Puducherry and south Andhra Pradesh coasts and over Gulf of Mannar. It would gradually become High over the southwest and adjoining west-central Bay of Bengal and along & off Tamil Nadu, Puducherry coast and very rough along and off south Andhra Pradesh coast and also over Gulf of Mannar on 24th . The sea condition would be very high over the southwest and adjoining west-central Bay of Bengal and along & off north Tamil Nadu, Puducherry coasts and high along and off south Tamil Nadu & south Andhra Pradesh coasts and also over Gulf of Mannar on 25th November, 2020.

 

(iv)  Fishermen Warning

Fishermen are advised not to venture into Southwest & adjoining west-central & southeast Bay of Bengal, Gulf of Mannar and along & off Tamil Nadu, Puducherry and south Andhra Pradesh coasts during 23-25th November. Also the fishermen out at Sea are advised to return to the coast and avoid the above sea area.

 

The severe cyclonic storm “GATI” over north Somalia moved nearly westwards with a speed of about 09 kmph during past 06 hours and weakened into a Cyclonic Storm over the same region and lay centred at 150 km south-southwest of Ras Binnah (Somalia). It is very likely to move nearly westwards and weaken gradually into a deep depression during next 6 hours.

Date/Time(IST)

Position

(Lat. 0N/ long. 0E)

Maximum sustained surface

wind speed (Kmph)

Category of cyclonic disturbance

23.11.20/0530

10.5/50.0

80-90 Gusting TO 100

Cyclonic Storm

23.11.20/1130

10.6/48.8

55-65 Gusting TO 75

Deep Depression

23.11.20/1730

10.6/47.6

40-50 Gusting TO 60

Depression

23.11.20/2330

10.7/46.4

20-30 Gusting TO 40

Low Pressure Area

 

As the system has moved away from the Indian coast no adverse weather associated with this system is likely over the west coast of India. However, warnings for Ship and Fishermen prevail over southwest Arabian Sea as specified below.

 

(i) Wind warning

Gale wind speed reaching 80-90 kmph gusting to 100 kmph is prevailing over Gulf of Eden along and of Somalia coast and 60-70 kmph gusting to 80 kmph prevails over southwest Arabian Sea along and off north Somalia coast.   It will gradually decrease becoming 40-50 kmph gusting to 60 kmph over the above area by 23rd November evening.   

(ii) Sea condition

Sea condition will be  high to very rough over Gulf of Eden and southwest Arabian Sea along and off north Somalia coast till 23rd November evening and improve thereafter.

(iii)  Fishermen Warning

Fishermen are advised not to venture into Gulf of Eden and southwest Arabian Sea along and off north Somalia coast till 23rd November evening.

 

 

SEVERE CYCLONIC STORM OVER ARABIAN SEA

 

 

DEPRESSION OVER BAY OF BENGAL

 

Please CLICK HERE for graphics.

Kindly download MAUSAM APP for location specific forecast & warning, MEGHDOOT APP for Agromet advisory and DAMINI APP for Lightning Warning.

 

***

NB/KGS/(IMD Release)