GMDSS BULLETIN I 210900
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 09 UTC OF 21 ST AUGUST 2026 TO 00 UTC OF 23 RD AUGUST
2026.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 0300 UTC:
AN UPPER AIR CYCLONIC CIRCULATION LIES OVER NORTH BAY OF BENGAL &
ADJOINING
BANGLADESH AT 5.8 KM ABOVE MEAN SEA LEVEL.
THE UPPER AIR CYCLONIC CIRCULATION OVER WESTCENTRAL ADJOINING
NORTHWEST BAY
OF BENGAL AND NORTH ANDHRA PRADESH - SOUTH ODISHA COASTS AT 5.8 KM
ABOVE MEAN
SEA LEVEL PERSISTS.
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 21 ST AUGUST 2026 TO 00UTC OF 22
ND AUGUST 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 5 DEG N: SW/W-LY 10/30 KTS BEC
NW/W-LY 10/20 KTS
TO THE E OF 70 DEG E.
2) REST AREA: SW/S-LY 05/15 KTS.
II) WAVE HEIGHT: 1.5-4.0 MTR.
III) WEATHER: 1) S OF 4 DEG N: FAIRLY WIDESPREAD RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) S OF 4 DEG N: POOR.
2) REST AREA: GOOD.
ARB A1-FORECAST VALID FROM 00 UTC OF 22 ND AUGUST 2026 TO 00 UTC OF
23 RD AUGUST
2026.
I) WIND DIRECTION AND SPEED: 1) N OF 5 DEG N: SW/W-LY 10/25 KTS.
2) REST AREA: SW/S-LY 10/15 KTS.
II) WAVE HEIGHT: 1.5-4.0 MTR.
III) WEATHER: 1) E OF 58 DEG E: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 58 DEG E: 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 09 UTC OF 21 ST AUGUST 2026 TO 00UTC OF 22
ND AUGUST 2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 15/25 KTS BEC W/NW-LY 10/20 KTS
TO THE E OF 70 DEG E.
II) WAVE HEIGHT: 2.0-4.0 MTR.
III) WEATHER: 1) E OF 68 DEG E: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 68 DEG E: MODERATE.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 00 UTC OF 22 ND AUGUST 2026 TO 00 UTC OF
23 RD AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 15/25 KTS.
II) WAVE HEIGHT: 2.0-3.5 MTR.
III) WEATHER: 1) E OF 66 DEG E TO THE S OF 20 DEG N: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 66 DEG E TO THE S OF 20 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 09 UTC OF 21 ST AUGUST 2026 TO 00UTC OF 22
ND AUGUST 2026.
I) WIND DIRECTION AND SPEED: SW/S-LY 10/25 KTS.
II) WAVE HEIGHT: 2.0-3.5 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
BOB A3-FORECAST VALID FROM 00 UTC OF 22 ND AUGUST 2026 TO 00 UTC OF
23 RD AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/S-LY 10/25 KTS.
II) WAVE HEIGHT: 2.0-4.0MTR.
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 09 UTC OF 21 ST AUGUST 2026 TO 00UTC OF 22
ND AUGUST 2026.
I) WIND DIRECTION AND SPEED: SW/S-LY 10/25 KTS.
II) WAVE HEIGHT: 2.0-4.0 MTR.
III) WEATHER: 1) E OF 86 DEG E: WIDESPREAD RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 86 DEG E: VERY POOR.
2) REST AREA: GOOD.
BOB A4-FORECAST VALID FROM 00 UTC OF 22 ND AUGUST 2026 TO 00 UTC OF
23 RD AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW-LY 10/20 KTS.
II) WAVE HEIGHT: 2.0-4.0 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
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 21/1700 UTC.=