DATE: 11-12-2023 Time of issue: 1230 Hrs IST
WEATHER FORECAST / WARNING FOR NEXT 7 DAYS
Day 3 Day 4 Day 5
Day 1 Day 6
Met Day 2 valid from 0830 valid from 0830 valid from 0830
DAYS valid from 2030 hrs (16.12.2023)
Sub- valid from 0830 hrs IST hrs IST of hrs IST of hrs IST of
/ IST of 11.12.2023 to &
Division of 12.12.2023 to 0830 hrs 13.12.2023 to 0830 14.12.2023 to 15.12.2023 to
WARNINGS 0830 hrs IST of Day 7
IST of 13.12.2023 hrs IST of 0830 hrs IST of 0830 hrs IST of
12.12.2023 (17.12.2023)
14.12.2023 15.12.2023 16.12.2023
Tamil Nadu/ ISOL
Rainfall
Puducherry [STN-SCT, ISOL ISOL ISOL SCT SCT SCT
Distribution NTN-ISOL]
& Karaikal
Heavy rain is likely to
occur at one or two
places over Ghat areas of
HRW Coimbatore, Nilgiris, NIL NIL NIL NIL
Ramanathapuram,
Tirunelveli, Thoothukudi
and Kanyakumari
TSL/TSLG/
TSLH/ TSL TSL NIL NIL NIL
TSLHG
Kerala & Rainfall
FWS SCT ISOL ISOL SCT SCT SCT
Mahe Distribution
Heavy rain is likely to occur
HRW at one or two places
NIL NIL NIL NIL
TSL/TSLG/
TSLH/ TSLG 30-40 TSLG 30-40 NIL NIL TSL
TSLHG
Rainfall
FWS SCT SCT SCT SCT
Distribution
HRW NIL NIL NIL NIL NIL
Lakshadweep FWS WS
TSL/TSLG/
TSLH/ TSL NIL NIL NIL NIL
TSLHG
Coastal Rainfall
SCT ISOL DRY DRY DRY ISOL ISOL
Karnataka Distribution
HRW NIL NIL NIL NIL NIL
TSL/TSLG/
TSLH/ NIL NIL NIL NIL NIL
TSLHG
Rainfall
DRY DRY DRY DRY DRY
Distribution
North Interior HRW NIL NIL NIL NIL NIL
DRY DRY
Karnataka TSL/TSLG/
TSLH/ NIL NIL NIL NIL NIL
TSLHG
South Interior Rainfall
ISOL ISOL DRY DRY ISOL ISOL ISOL
Karnataka Distribution
HRW NIL NIL NIL NIL NIL
TSL/TSLG/
TSLH/ NIL NIL NIL NIL NIL
TSLHG
Rainfall
DRY DRY DRY DRY ISOL
Coastal Distribution
Andhra HRW NIL NIL NIL NIL NIL
DRY DRY
Pradesh & TSL/TSLG/
Yanam TSLH/ NIL NIL NIL NIL NIL
TSLHG
Rainfall
DRY DRY DRY DRY ISOL
Rayalaseema Distribution DRY DRY
HRW NIL NIL NIL NIL NIL
TSL/TSLG/
TSLH/ NIL NIL NIL NIL NIL
TSLHG
Rainfall
Telangana DRY DRY DRY DRY DRY DRY DRY
Distribution
HRW NIL NIL NIL NIL NIL
TSL/TSLG/
TSLH/ NIL NIL NIL NIL NIL
TSLHG
Spatial rainfall distribution
% Stations % Stations
reporting Category reporting Category
Rainfall Rainfall
76-100 Widespread (WS/ most places) 26-50 Scattered (SCT/a few places)
51-75 Fairly Widespread (FWS/ many places) 1 -25 Isolated (ISOL/one or two places)
No Rain Dry
Rainfall intensity
Heavy rain 64.5 – 115.5 mm (7 – 11 cm)
Very heavy rain 115.6 - 204.4 mm (12 - 20 cm)
Extremely heavy rain >204.4 mm (21 cm or more)
Subdivision Warnings colour
WATCH (BE UPDATED)
ALERT (BE PREPARED)
WARNING (TAKE ACTION)
TSL Thunderstorm & Lightning
TSLG Thunderstorm & Lightning with Gusty wind
TSLH Thunderstorm & Lightning with Hailstorm
TSLHG Thunderstorm, Lightning & Hailstorm with Gusty wind
Legends:
North Tamil Nadu (NTN) Chennai, Kancheepuram, Chengalpattu, Tiruvallur, Cuddalore, Villupuram, Tirupattur, Vellore, Ranipet,
districts Kallakurichi, Tiruvannamalai, Krishnagiri, Dharmapuri, Salem, Namakkal, Karur, Erode, Thanjavur,
Tiruvarur, Mayiladuthurai, Nagapattinam, Pudukottai, Nilgiris, Coimbatore, Tiruppur, Tiruchirapalli,
Ariyalur, Perambalur.
South Tamil Nadu (STN) Dindigul, Theni, Virudhunagar, Madurai, Sivagangai, Ramanathapuram, Thoothukudi, Thenkasi,
districts Tirunelveli, Kanyakumari.
Interior Tamil Nadu (ITN) Tirupattur, Vellore, Ranipet, Kallakurichi, Tiruvannamalai, Kancheepuram, Krishnagiri, Dharmapuri, Salem,
districts Namakkal, Karur, Erode, Nilgiris, Coimbatore, Tiruppur, Tiruchirapalli, Ariyalur, Perambalur, Sivagangai,
Virudhunagar, Theni, Dindigul, Madurai, Thenkasi.
North interior Tamil Tirupattur, Vellore, Ranipet, Kallakurichi, Tiruvannamalai, Kancheepuram, Krishnagiri, Dharmapuri, Salem,
Nadu (NITN) districts Namakkal, Karur, Erode, Nilgiris, Coimbatore, Tiruppur, Tiruchirapalli, Ariyalur, Perambalur.
South interior Tamil Sivagangai, Virudhunagar, Theni, Dindigul, Madurai, Thenkasi.
Nadu (SITN) districts
Coastal Tamil Nadu Tiruvallur, Chennai, Chengalpattu, Villupuram, Cuddalore, Thanjavur, Tiruvarur, Mayiladuthurai,
(CTN) districts Nagapattinam, Pudukottai, Ramanathapuram, Thoothukudi, Tirunelveli, Kanyakumari.
North Coastal Tamil Tiruvallur, Chennai, Chengalpattu, Villupuram, Cuddalore, Thanjavur, Tiruvarur, Mayiladuthurai,
Nadu (NCTN) districts Nagapattinam, Pudukottai.
South Coastal Tamil Ramanathapuram, Thoothukudi, Tirunelveli, Kanyakumari.
Nadu (SCTN) districts
Delta Districts Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, Pudukottai and Karaikal area.
Delta and Adjoining Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, Pudukottai, Karaikal and Tiruchirapalli, Perambalur,
districts Ariyalur, Cuddalore.
Western Ghat districts Nilgiris, Coimbatore, Tiruppur, Theni, Dindigul, Thenkasi, Virudhunagar
PDC Puducherry and Karaikal
