GMDSS BULLETIN I 130900
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\U2019N 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\U2019E NORTHWARDS COVERING ENTIRE BAY OF BENGAL.
VALID FROM 09 UTC OF 13 TH NOVEMBER 2026 TO 00 UTC OF 15 TH NOVEMBER
2026.
PART-I STORM WARNING: NIL
PART-II SYNOPTIC WEATHER SYSTEM AT 0300 UTC:
UNDER THE INFLUENCE OF YESTERDAY\U2019S UPPER-AIR CYCLONIC
CIRCULATION OVER
CENTRAL ANDAMAN SEA AND ADJOINING ANDAMAN & NICOBAR ISLANDS, A
LOW PRESSURE
AREA FORMED OVER SOUTHEAST BAY OF BENGAL AT 0000 UTC AND LAY OVER THE
SAME
REGION AT 0300 UTC OF TODAY, THE 13TH NOVEMBER, 2026. THE ASSOCIATED
CYCLONIC
CIRCULATION EXTENDED UPTO 5.8 KM ABOVE MEAN SEA LEVEL. IT IS VERY
LIKELY TO MOVE
NORTHWESTWARDS, BECOME WELL MARKED LOW PRESSURE AREA ON 14TH NOVEMBER
AND
INTENSIFY INTO A DEPRESSION OVER THE SAME REGION AROUND MORNING OF
15TH
NOVEMBER, 2026. THEREAFTER, IT IS LIKELY TO MOVE NORTH-NORTHWESTWARDS
AND
INTENSIFY FURTHER INTO A CYCLONIC STORM OVER THE CENTRAL BAY OF
BENGAL AROUND
16TH NOVEMBER EVENING.
AN UPPER AIR CYCLONIC CIRCULATION LAY OVER EASTCENTRAL ARABIAN SEA
& ADJOINING
NORTHERN PARTS OF LAKSHADWEEP AT 3.1 KM ABOVE MEAN SEA LEVEL.
PART-III AREA FORECAST:
AREA: ARB A1 (ARABIAN SEA)-EQUATOR TO 10 DEG N W OF 80 DEG E.
ARB A1-FORECAST VALID FROM 09 UTC OF 13 TH NOV 2026 TO 00 UTC OF 14
TH NOV 2026.
I) WIND DIRECTION AND SPEED: NE/E-LY 10/20 KTS BEC NW/W-LY 05/10 KTS
TO THE S OF 5 DEG N.
II) WAVE HEIGHT: 0.5-2.5 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
ARB A1-FORECAST VALID FROM 00 UTC OF 14 TH NOV 2026 TO 00 UTC OF 15
TH NOV 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 62 DEG E: NE/N-LY 10/20 KTS BEC
NW-LY 05/10 KTS
TO THE S OF 5 DEG N.
2) REST AREA: CYCLONIC 05/15 KTS AT 67 DEG E AND
6 DEG N.
II) WAVE HEIGHT: 0.5-2.0 MTR.
III) WEATHER: 1) E OF 60 DEG E: WIDESPREAD RA/TS.
2) REST AREA: SCATTERED RA/TS.
IV) VISIBILITY: 1) E OF 60 DEG E: VERY POOR.
2) REST AREA: MODERATE.
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 09 UTC OF 13 TH NOV 2026 TO 00 UTC OF 14
TH NOV 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 20 DEG N: ANTI-CYCLONIC 05/10
KTS.
2) REST AREA: NE/N-LY 10/15 KTS.
II) WAVE HEIGHT: 0.5-2.5 MTR.
III) WEATHER: 1) S OF 12 DEG N: ISOLATED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 12 DEG N: GOOD.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 00 UTC OF 14 TH NOV 2026 TO 00 UTC OF 15
TH NOV 2026.
I) WIND DIRECTION AND SPEED: NW-LY 05/10 KTS BEC NE/N-LY 10/15 KTS TO
THE S OF
20 DEG N.
II) WAVE HEIGHT: 0.5-2.5 MTR.
III) WEATHER: ISOLATED RA/TS.
IV) VISIBILITY: 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 09 UTC OF 13 TH NOV 2026 TO 00 UTC OF 14
TH NOV 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 5 DEG N: SE/S-LY 10/20 KTS BEC
CYCLONIC 10/15 KTS
AT 86 DEG E AND 7 DEG N.
2) REST AREA: W/SW-LY 10/20 KTS.
II) WAVE HEIGHT: 0.5-3.0 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB A3-FORECAST VALID FROM 00 UTC OF 14 TH NOV 2026 TO 00 UTC OF 15
TH NOV 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 5 DEG N: CYCLONIC 10/15 KTS AT
85 DEG E AND
10 DEG N.
2) REST AREA: SW-LY 10/20 KTS.
II) WAVE HEIGHT: 0.5-3.0 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB: A4: BAY OF BENGAL N OF 10 DEG N E OF 80 DEG E.
BOB A4-FORECAST VALID FROM 09 UTC OF 13 TH NOV 2026 TO 00 UTC OF 14
TH NOV 2026.
I) WIND DIRECTION AND SPEED: E E/NE-LY 10/20 KTS.
II) WAVE HEIGHT: 1.0-3.0 MTR.
III) WEATHER: 1) S OF 19 DEG N: FAIRLY WIDESPREAD RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 19 DEG N: POOR.
2) REST AREA: GOOD.
BOB A4-FORECAST VALID FROM 00 UTC OF 14 TH NOV 2026 TO 00 UTC OF 15
TH NOV 2026.
I) WIND DIRECTION AND SPEED: E/SE-LY 10/15 KTS BEC NE-LY 10/20 KTS
TO THE W OF 90 DEG E.
II) WAVE HEIGHT: 1.0-2.5 MTR.
III) WEATHER: 1) S OF 18 DEG N: WIDESPREAD RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 18 DEG N: 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 13/1700 UTC.=