GMDSS BULLETIN I 201800
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 23O45N 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
30E NORTHWARDS COVERING ENTIRE BAY OF BENGAL.
VALID FROM 18 UTC OF 20TH DECEMBER 2025 TO 12 UTC OF 22ND DECEMBER
2025.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 1200 UTC: SEASONAL WEATHER.
PART-III AREA FORECAST:
AREA: ARB A1 (ARABIAN SEA)-EQUATOR TO 10 DEG N W OF 80 DEG E.
ARB A1-FORECAST VALID FROM 18 UTC OF 20TH DECEMBER 2025 TO 12 UTC OF
21ST DEC 2025.
I) WIND DIRECTION AND SPEED: 1) E OF 70 DEG E: NE-LY 10/25 KTS BEC
CYCLONIC 05/15 KTS
AT 74 DEG E AND 2 DEG N.
2) REST AREA: NE/N-LY 10/20 KTS.
II) WAVE HEIGHT: 1.5-3.5 MTR.
III) WEATHER: 1) E OF 60 DEG E: FAIRLY WIDESPREAD RA/TS.
2) REST AREA: SCATTERED RA/TS.
IV) VISIBILITY: 1) E OF 60 DEG E: POOR.
2) REST AREA: MODERATE.
ARB A1-FORECAST VALID FROM 12 UTC OF 21ST DECEMBER 2025 TO 12 UTC OF
22ND DECE 2025.
I) WIND DIRECTION AND SPEED: 1) W OF 60 DEG E: NE/N-LY 15/25 KTS.
2) REST AREA: NE-LY 10/25 KTS.
II) WAVE HEIGHT: 1.5-3.5 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
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 18 UTC OF 20TH DECEMBER 2025 TO 12 UTC OF
21ST DEC 2025.
I) WIND DIRECTION AND SPEED: N/NE-LY 10/15 KTS.
II) WAVE HEIGHT: 1.5-2.5 MTR.
III) WEATHER: 1) W OF 62 DEG E: ISOLATED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) W OF 62 DEG E: GOOD.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 12 UTC OF 21ST DECEMBER 2025 TO 12 UTC OF
22ND DECE 2025.
I) WIND DIRECTION AND SPEED: N/NE-LY 10/15 KTS.
II) WAVE HEIGHT: 1.5-2.5 MTR.
III) WEATHER: 1) W OF 64 DEG E: ISOLATED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) W OF 64 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 18 UTC OF 20TH DECEMBER 2025 TO 12 UTC OF
21ST DEC 2025.
I) WIND DIRECTION AND SPEED: NE/N-LY 10/20 KTS.
II) WAVE HEIGHT: 1.52.5 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
BOB A3-FORECAST VALID FROM 12 UTC OF 21ST DECEMBER 2025 TO 12 UTC OF
22ND DECE 2025.
I) WIND DIRECTION AND SPEED: NE-LY 10/20 KTS.
II) WAVE HEIGHT: 1.52.5 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 18 UTC OF 20TH DECEMBER 2025 TO 12 UTC OF
21ST DEC 2025.
I) WIND DIRECTION AND SPEED: NE-LY 10/15 KTS.
II) WAVE HEIGHT: 0.52.0 MTR.
III) WEATHER: 1) S OF 15 DEG N: ISOLATED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 15 DEG N: GOOD.
2) REST AREA: GOOD.
BOB A4-FORECAST VALID FROM 12 UTC OF 21ST DECEMBER 2025 TO 12 UTC OF
22ND DECE 2025.
I) WIND DIRECTION AND SPEED: NE-LY 10/15 KTS.
II) WAVE HEIGHT: 0.52.0 MTR.
III) WEATHER: 1) S OF 14 DEG N: ISOLATED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 14 DEG N: GOOD.
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 21/0800 UTC.
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ISSUED BY INDIA METEOROLOGICAL DEPARTMENT=