GMDSS BULLETIN I 310900
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\U2019E NORTHWARDS COVERING ENTIRE BAY OF BENGAL.
VALID FROM 09 UTC OF 31ST DECEMBER 2025 TO 00 UTC OF 02ND JANUARY
2026.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 0300 UTC:
AN UPPER AIR CYCLONIC CIRCULATION LIES OVER SOUTHWEST BAY OF BENGAL
OFF SRI LANKA COASTS EXTENDS UPTO 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 31ST DECEMBER 2025 TO 00 UTC OF
01ST JANU 2025.
I) WIND DIRECTION AND SPEED: 1) W OF 60 DEG E: NE/N-LY 10/20 KTS.
2) REST AREA: N/NW-LY 10/15 KTS.
II) WAVE HEIGHT: 1.0-2.0 MTR.
III) WEATHER: 1) E OF 58 DEG E: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 58 DEG E: MODERATE.
2) REST AREA: GOOD.
ARB A1-FORECAST VALID FROM 00 UTC OF 01ST JANUARY 2025 TO 00 UTC OF
02ND JANU 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 60 DEG E: NE/N-LY 15/20 KTS.
2) REST AREA: N/NW-LY 10/15 KTS.
II) WAVE HEIGHT: 1.0-2.5 MTR.
III) WEATHER: 1) E OF 62 DEG E: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 62 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 31ST DECEMBER 2025 TO 00 UTC OF
01ST JANU 2025.
I) WIND DIRECTION AND SPEED: 1) W OF 60 DEG E TO THE S OF 20 DEG N:
N/NE-LY 10/20 KTS.
2) REST AREA: N/NW-LY 10/15 KTS.
II) WAVE HEIGHT: 1.0-2.5 MTR.
III) WEATHER: 1) E OF 65 DEG E: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 65 DEG E: MODERATE.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 00 UTC OF 01ST JANUARY 2025 TO 00 UTC OF
02ND JANU 2026.
I) WIND DIRECTION AND SPEED: N/NE-LY 10/15 KTS.
II) WAVE HEIGHT: 1.0-2.0 MTR.
III) WEATHER: 1) E OF 60 DEG E: ISOLATED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 60 DEG E: GOOD.
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 31ST DECEMBER 2025 TO 00 UTC OF
01ST JANU 2025.
I) WIND DIRECTION AND SPEED: 1) N OF 4 DEG N: NE/E-LY 05/10 KTS BEC
CYCLONIC 05/15 KTS
AT 82 DEG E AND 7 DEG N.
2) REST AREA: NW/W-LY 10/15 KTS.
II) WAVE HEIGHT: 0.5\U20131.5 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB A3-FORECAST VALID FROM 00 UTC OF 01ST JANUARY 2025 TO 00 UTC OF
02ND JANU 2026.
I) WIND DIRECTION AND SPEED: NE/E-LY 05/15 KTS BEC NW/W-LY 05/10 KTS
TO THE
S OF 6 DEG N.
II) WAVE HEIGHT: 0.5\U20132.0 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 09 UTC OF 31ST DECEMBER 2025 TO 00 UTC OF
01ST JANU 2025.
I) WIND DIRECTION AND SPEED: NE/N-LY 10/15 KTS.
II) WAVE HEIGHT: 0.5\U20132.0 MTR.
III) WEATHER: 1) S OF 15 DEG N TO THE W OF 92 DEG E: WIDESPREAD
RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 15 DEG N TO THE W OF 92 DEG E: VERY POOR.
2) REST AREA: GOOD.
BOB A4-FORECAST VALID FROM 00 UTC OF 01ST JANUARY 2025 TO 00 UTC OF
02ND JANU 2026.
I) WIND DIRECTION AND SPEED: NE/N-LY 10/15 KTS.
II) WAVE HEIGHT: 0.5\U20132.5 MTR.
III) WEATHER: 1) S OF 13 DEG N TO THE W OF 90 DEG E: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 13 DEG N TO THE W OF 90 DEG E: MODERATE.
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 31/1700 UTC.=