SPL GMDSS BULLETIN NO-07 100400
ISSUED BY: INDIA METEOROLOGICAL DEPARTMENT, NEW DELHI
HIGH SEA FORECAST FOR MET. AREA VIII (N)
AREA OF COVERAGE: AREA OF THE INDIAN OCEAN ENCLOSED BY LINES FROM THE
INDO-
PAKISTAN FRONTIER AT 23O45'N 68 DEG E TO 00 DEG N 6 DEG E, THECE TO
CAPE
GARDAFUI; THE EAST AFRICAN COAST SOUTH TO THE EQUATOR, THENCE TO 95
DEG E, TO
6 DEG N, THENCE NORTH EASTWARDS TO MYANMAR/THAIL FRONTIER IN 10 DEG N
98 DEG
30'E NORTHWARDS COVERING ENTIRE BAY OF BENGAL.
VALID FROM 04 UTC OF 10 TH JAN 2026 TO 12 UTC OF 11 TH JAN 2026.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 0000 UTC:
SUB: DEEP DEPRESSION WEAKENED INTO A DEPRESSION OVER SOUTHWEST BAY OF
BENGAL
OFF NORTHEAST SRI LANKA COAST.
THE DEEP DEPRESSION OVER SOUTHWEST BAY OF BENGAL MOVED WEST-
NORTHWESTWARDS WITH A SPEED OF 12 KMPH DURING PAST 6 HOURS, WEAKENED
INTO A
DEPRESSION AND LAY CENTERED AT 0000 UTC OF THE 10 TH JANUARY, 2026
OVER SOUTHWEST
BAY OF BENGAL OFF NORTHEAST SRI LANKA COAST, NEAR LATITUDE 8.8ON AND
LONGITUDE
81.6OE, ABOUT 50 KM EAST-NORTHEAST OF TRINCOMALEE (43418), 120 KM
NORTH OF
BATTICALOA (43436), 210 KM NORTH OF POTTUVIL (43475), 310 KM
SOUTHEAST OF KARAIKAL
(43346) AND 490 KM SOUTH-SOUTHEAST OF CHENNAI (43279).
IT IS LIKELY TO CONTINUE TO MOVE WEST-NORTHWESTWARDS AND CROSS NORTH
SRI
LANKA COAST BETWEEN TRINCOMALEE AND JAFFNA AS A DEPRESSION DURING
0600-1200
UTC OF 10TH JANUARY, 2026.
THE FORECAST TRACK AND INTENSITY IS MENTIONED IN THE TABLE BELOW
DATE/TIME
(UTC)
POSITION (LAT. 0 N/
LONG. 0 E)
MAXIMUM SUSTAINED
SURFACE WIND SPEED
(KMPH)
CATEGORY OF
CYCLONIC DISTURBANCE
10.01.26/0000 8.8/81.6 45-55 GUSTING TO 65 DEPRESSION
10.01.26/0600 9.1/81.0 40-50 GUSTING TO 60 DEPRESSION
10.01.26/1200 9.3/80.5 35-45 GUSTING TO 55 DEPRESSION
10.01.26/1800 9.2/80.1 25-35 GUSTING TO 45 WELL MARKED LOW
PRESSURE
AREA
PART-III AREA FORECAST:
AREA: ARB A1 (ARABIAN SEA)-EQUATOR TO 10 DEG N W OF 80 DEG E.
ARB A1-FORECAST VALID FROM 04 UTC OF 10 TH JAN 2026 TO 12 UTC OF 10
TH JAN 2026.
I) WIND DIRECTION AND SPEED: NE/N-LY 10/25 KTS.
II) WAVE HEIGHT: 1.5-4.0 MTR.
III) WEATHER: 1) N OF 5 DEG N TO THE W OF 68 DEG E: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) N OF 5 DEG N TO THE W OF 68 DEG E: MODERATE.
2) REST AREA: GOOD.
ARB A1-FORECAST VALID FROM 12 UTC OF 10 TH JAN 2026 TO 12 UTC OF 11
TH JAN 2026.
I) WIND DIRECTION AND SPEED: NE/N-LY 10/25 KTS.
II) WAVE HEIGHT: 1.5-4.0 MTR.
III) WEATHER: 1) W OF 65 DEG E TO THE N OF 6 DEG N: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) W OF 65 DEG E TO THE N OF 6 DEG N: MODERATE.
2) REST AREA: GOOD.
ARB A2-ARABIAN SEA: -23 DEG 45 MIN N 68 DEG E TO 00 DEG N 63 DEG E TO
CAPE GARDAFUI
TO N OF 10 DEG N. 55.
ARB A2-FORECAST VALID FROM 04 UTC OF 10 TH JAN 2026 TO 12 UTC OF 10
TH JAN 2026.
I) WIND DIRECTION AND SPEED: NE-LY 10/20 KTS.
II) WAVE HEIGHT: 1.5-2.5 MTR.
III) WEATHER: 1) W OF 65 DEG E TO THE S OF 15 DEG N: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) W OF 65 DEG E TO THE S OF 15 DEG N: MODERATE.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 12 UTC OF 10 TH JAN 2026 TO 12 UTC OF 11
TH JAN 2026.
I) WIND DIRECTION AND SPEED: NE-LY 10/20 KTS.
II) WAVE HEIGHT: 1.5-2.5 MTR.
III) WEATHER:1) W OF 60 DEG E TO THE S OF 15 DEG N: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) W OF 60 DEG E TO THE S OF 15 DEG N: MODERATE.
2) REST AREA: GOOD.
BOB A3-BAY OF BENGAL: EQUATOR TO 10 DEG N BETWEEN E OF 80 DEG E WEST
OF 10
DEG N/98 DEG 30 MIN E TO 6 DEG N/95 DEG E THENCE S-WARDS TO EQUATOR.
BOB A3-FORECAST VALID FROM 04 UTC OF 10 TH JAN 2026 TO 12 UTC OF 10
TH JAN 2026.
I) WIND DIRECTION AND SPEED: NE/E-LY 15/20 KTS BEC CYCLONIC 20/25 KTS
AT 81.6 DEG E AND 8.8 DEG N.
II) WAVE HEIGHT: 2.5-4.0 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB A3-FORECAST VALID FROM 12 UTC OF 10 TH JAN 2026 TO 12 UTC OF 11
TH JAN 2026.
I) WIND DIRECTION AND SPEED: NE/E-LY 15/20 KTS BEC CYCLONIC 15/20 KTS
AT 81.4 DEG E AND 8.5 DEG N.
II) WAVE HEIGHT: 1.5-2.5 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
BOB: A4: BAY OF BENGAL N OF 10 DEG N E OF 80 DEG E.
BOB A4-FORECAST VALID FROM 04 UTC OF 10 TH JAN 2026 TO 12 UTC OF 10
TH JAN 2026.
I) WIND DIRECTION AND SPEED: N/NE-LY 10/20 KTS.
II) WAVE HEIGHT: 2.0-4.0MTR.
III) WEATHER: 1) S OF 16 DEG N TO THE W OF 89 DEG E: WIDESPREAD
RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 16 DEG N TO THE W OF 89 DEG E: VERY POOR.
2) REST AREA: GOOD.
BOB A4-FORECAST VALID FROM 12 UTC OF 10 TH JAN 2026 TO 12 UTC OF 11
TH JAN 2026.
I) WIND DIRECTION AND SPEED: N/NE-LY 15/20 KTS.
II) WAVE HEIGHT: 2.0-3.0MTR.
III) WEATHER: 1) S OF 15 DEG N TO THE W OF 88 DEG E: WIDESPREAD
RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 15 DEG N TO THE W OF 88 DEG E: VERY POOR.
2) REST AREA: GOOD.
ADVISORY: PLEASE BE AWARE. WIND WAVE FORECASTS ARE AVERAGES. WIND
GUSTS
CAN BE 40 PER CENT STRONGER THAN THE FORECAST. MAXIMUM WAVE HEIGHT
CAN BE
TWICE THE FORECAST WAVE HEIGHT.
NEXT FORECAST WILL BE ISSUED AT 10/0800 UTC.=