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Press Information Bureau
Government of India
Ministry of Earth Science
30 NOV 2020 10:20AM by PIB Delhi
Depression formed over southeast Bay of Bengal & neighbourhood

According to the Cyclone Warning Division of the India Meteorological Department (IMD):

Latest satellite and Ship observations indicate that the well marked low pressure area over southeast Bay of Bengal &neighbourhood concentrated into a Depression and lay centered at 0530 hrs IST of 30th November 2020 over southeast Bay of Bengal about 750 km east-southeast of Trincomalee (Sri Lanka) and 1150 km east-southeast of Kanyakumari (India). It is very likely to intensify further into a Deep Depression during next 24 hours. It is also likely to intensify further into a cyclonic storm. It is very likely to move west-northwestwards and cross Sri Lanka coast around evening of 2nd December. It is very like to move nearly westwards thereafter and emerge into Comorin area on3rd December morning.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
30.11.20/0530 7.5/88.0 40-50 gusting to 60

Depression

30.11.20/1730 7.7/87.0 50-60 gusting to 70

Deep Depression

01.12.20/0530 7.9/86.1 60-70 gusting to 80

Cyclonic Storm

01.12.20/1730 8.1/84.8 65-75 gusting to 85

Cyclonic Storm

02.12.20/0530 8.3/83.1 70-80 gusting to 90

Cyclonic Storm

02.12.20/1730 8.5/81.5 70-80 gusting to 90

Cyclonic Storm

03.12.20/0530
8.5/80.2 60-70 gusting to 80

Cyclonic Storm

     

 

Warnings:

(i) Rainfall

  • Heavy to very heavy rainfall at a few places with isolated Extremely heavy falls very likely over south Tamilnaduand south Keralaon 2nd December, 2020 and Isolated heavy to very heavy rainfall likely over these regions on 1st, 3rd and 4th December 2020.
  • Heavy to very heavy rainfall at Isolated places very likely over north Tamilnadu, Puducherry, Mahe&Kariakal and north Kerala during 2nd and 3rd December, 2020 and isolated heavy rainfall during 1st and 4th December.
  • Heavy rainfall at isolated places very likely over south Coastal Andhra Pradesh during 2nd& 03rdDecember and over Lakshadweep during 03rd and 4th December, 2020.

 

Sub-Divisions

30 Nov 2020*

01 Dec 2020*

02 Dec 2020*

03 Dec 2020*

04 Dec 2020*

South Tamilnadu

Rainfall  at a few places 

Rainfall at many places with heavy to very heavy  rainfall at  isolated places

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

Rainfall at many places with heavy to very heavy  rainfall at  isolated places

Rainfall at many places with heavy to very heavy  rainfall at  isolated places

North Tamilnadu, Puducherry &Karaikal

Rainfall  at isolated places 

Rainfall at a few places with heavy to very heavy rainfall at  isolated places

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

Rainfall at many places with heavy to very heavy  rainfall at  isolated places

Rainfall at many places with heavy fall at  isolated places 

 

South Kerala

Rainfall  at isolated places

Rainfall at many places with heavy to very heavy  rainfall at  isolated places

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

Rainfall at many places with heavy to very heavy  rainfall at  isolated places

Rainfall at many places with heavy to very heavy  rainfall at  isolated places

 

North Kerala &Mahe

Rainfall  at isolated places

Rainfall at many places with  heavy rainfall at  isolated places

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

Rainfall at many places with heavy  rainfall at  isolated places

Rainfall at a few places with heavy fall at  isolated places 

South Coastal Andhra Pradesh

Rainfall  at isolated places

Rainfall  at isolated places

Rainfall  at a few places with heavy rainfall at isolated places

Rainfall  at a few places with heavy rainfall at isolated places

Rainfall  at a few places

Lakshadweep

Rainfall  at a few places

Rainfall  at a few places

Rainfall  at most places

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

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

 

(ii) Wind warning

  • Squally Weather (wind speed reaching 45-55 kmph gusting to 65 kmph) very likely over central parts of South Bay of Bengal on 30thNovember.
  • It would gradually increase becoming 55-65 kmph gusting to 75 kmph over southeast and adjoining southwest Bay of Bengal from 1st December night and 70-80 kmph gusting to 90 kmphover southwest Bay of Bengal, along & off Sri Lanka coast and 45-55 kmph gusting to 65 kmph over Comorin Area, Gulf of Mannar and Tamilnadu-Kerala coasts from 2nd December forenoon for subsequent 24 hours.
  • The squally wind speed reaching 55-65 kmph gusting to 75 kmph is very likely to prevail over Gulf of Mannar,along & off south Tamilnadu&Kerala coasts, Comorin Area, Lakshadweep-Maldives area and adjoining southeast Arabian Seafrom 3rd December morning for subsequent 24 hours.

 

 (iii) Sea condition

  • Sea condition will be rough to very rough over southeast and adjoining southwest Bay of Bengal from 1st December night and very rough to high gusting to 90 kmphover southwest Bay of Bengal, along & off east Sri Lanka coast and rough to very rough over Comorin Area, Gulf of Mannar and Tamilnadu-Kerala coasts from 2nd December forenoon for subsequent 24 hours.
  • Sea condition will be rough to very rough over Gulf of Mannar, along and off south Tamilnadu&Kerala coasts, Comorin Areafrom 2nd December morning and Lakshadweep-Maldives area and adjoining southeast Arabian Seafrom 3rd December morning for subsequent 24 hours.

 

(iv) Fishermen Warning

Fishermen are advised not to venture into southeast and adjoining southwest Bay of Bengal from 1st December night; over southwest Bay of Bengal, along & off east Sri Lanka coast, Comorin Area, Gulf of Mannar and Tamilnadu-Kerala coasts from 2nd December forenoon for subsequent 24 hours, over Gulf of Mannar, along & off south Tamilnadu& Kerala coasts, Comorin Area from 2nd December morning and over Lakshadweep-Maldives area & adjoining southeast Arabian Sea from 3rd December morning for subsequent 24 hours.

Also those who are out at Sea are advised to return to the coast by today.

For details in Graphics, Please Click here.

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

 

 

***

NB/KGS/(IMD Release)