இந் ய அர
இந் ய வானிைல ஆய் ைற GOVERNMENT OF INDIA
மண்டல வானிைல ஆய் ைமயம் INDIA METEOROLOGICAL DEPARTMENT
Regional Meteorological Centre
6, கல் ரிசாைல,
No. 6, College Road,
ெசன்ைன- 600006 Chennai–600006
ெதாைலேப : 044- 28271951. Phone: 044- 28271951
Monday, December 16, 2024 Time of issue: 1230 Hrs. IST
WEATHER FORECAST / WARNING FOR NEXT 7 DAYS
Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7
Met Sub- DAYS/ valid from 1230 hrs. valid from 0830 hrs. valid from 0830 hrs. valid from 0830 hrs. valid from 0830 hrs. valid from 0830 hrs. valid from 0830 hrs.
Division WARNINGS IST of 16.12.2024 to IST of 17.12.2024 to IST of 18.12.2024 to IST of 19.12.2024 to IST of 20.12.2024 to IST of 21.12.2024 to IST of 22.12.2024 to
0830 hrs. IST of 0830 hrs. IST of 0830 hrs. IST of 0830 hrs. IST of 0830 hrs. IST of 0830 hrs. IST of 0830 hrs. IST of
17.12.2024 18.12.2024 19.12.2024 20.12.2024 21.12.2024 22.12.2024 23.12.2024
SCT FWS SCT SCT
Rainfall ISOL (NCTN-FWS; (NCTN-FWS; (NTN-SCT; (NTN-SCT; ISOL ISOL
Distribution STN-ISOL) STN-ISOL)
RTN- ISOL) RTN- SCT)
Heavy to very
heavy rain is likely
Heavy to very heavy
to occur at isolated
rain is likely to occur
places
at isolated places
over Chennai,
over Chengalpattu,
Chengalpattu,
Cuddalore,
Tiruvallur,
Villupuram,
Cuddalore,
Mayiladuthurai Heavy rain is likely
Kancheepuram
Tamilnadu, districts of to occur at isolated
and Villupuram
PDC & KKL Tamilnadu and places
districts of
Puducherry. over Chennai,
HRW NIL Tamilnadu & NIL NIL NIL
Chengalpattu,
Puducherry.
Tiruvallur and
Heavy rain is likely to
Heavy rain is likely Kancheepuram
occur at isolated
districts.
places over Chennai, to occur at isolated
Kancheepuram, places over Ranipet,
Tiruvannamalai,
Tiruvallur,
Kallakurichi,
Tiruvarur, Vellore, Ariyalur,
Nagapattinam Mayiladuthurai dist
districts of ricts of Tamilnadu &
Tamilnadu & Karaikal area.
Karaikal area.
TSL/TSLG/ TSLH/
NIL TSL TSL TSL TSL NIL NIL
TSLHG
Rainfall ISOL ISOL ISOL ISOL ISOL ISOL ISOL
Distribution
Kerala And Mahe
HRW
NIL NIL NIL NIL NIL NIL NIL
TSL/TSLG/
NIL NIL NIL NIL NIL NIL NIL
TSLH/ TSLHG
S
Rainfall
DRY DRY DRY DRY DRY DRY SCT C
Distribution
T
Lakshadweep HRW NIL NIL NIL NIL NIL NIL NIL
TSL/TSLG/ TSLH/
NIL NIL NIL NIL NIL NIL NIL
TSLHG
Rainfall
DRY DRY DRY DRY ISOL ISOL ISOL
Distribution
Coastal Karnataka NIL NIL NIL NIL NIL NIL
HRW NIL
TSL/TSLG/ TSLH/
NIL NIL NIL NIL NIL
TSLHG NIL NIL
Rainfall
DRY DRY DRY DRY ISOL ISOL ISOL
Distribution
North Interior
Karnataka HRW NIL NIL NIL NIL NIL NIL NIL
TSL/TSLG/ TSLH/
NIL NIL NIL NIL NIL NIL NIL
TSLHG
Rainfall
Distribution
DRY DRY DRY ISOL SCT SCT SCT
South Interior
Karnataka HRW NIL NIL NIL NIL NIL NIL NIL
TSL/TSLG/ TSLH/ NIL
TSLHG
NIL NIL NIL NIL NIL NIL
Rainfall
ISOL SCT FWS FWS SCT SCT ISOL
Distribution
Coastal
Andhra
Heavy rain is likely Heavy rain is Heavy rain is
Pradesh & HRW NIL to occur at one or likely to occur at likely to occur at NIL NIL NIL
Yanam two places one or two places one or two places
TSL/TSLG/ TSLH/
NIL TSL TSL TSL TSL NIL NIL
TSLHG
Rainfall
ISOL ISOL SCT SCT SCT SCT SCT
Distribution
Heavy rain is likely Heavy rain is Heavy rain is
Rayalaseema
HRW NIL to occur at one or likely to occur at likely to occur at NIL NIL NIL
two places one or two places one or two places
TSL/TSLG/ TSLH/
NIL TSL TSL TSL TSL NIL NIL
TSLHG
Rainfall DRY DRY DRY ISOL ISOL ISOL ISOL
Distribution
Telangana HRW NIL NIL NIL NIL NIL NIL NIL
TSL/TSLG/ TSLH/
NIL NIL 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
