GMDSS BULLETIN I 280900
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 28 TH APRIL 2026 TO 00 UTC OF 30 TH APRIL 2026.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 0300 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 09 UTC OF 28 TH APRIL 2026 TO 00 UTC OF 29
TH APRIL 2026.
I) WIND DIRECTION AND SPEED: NW/W-LY 05/10 KTS BEC SW-LY 05/10 KTS
TO THE E OF 77 DEG E.
II) WAVE HEIGHT: 0.5-1.0 MTR.
III) WEATHER: 1) E OF 62 DEG E: WIDESPREAD RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 62 DEG E: VERY POOR.
2) REST AREA: GOOD.
ARB A1-FORECAST VALID FROM 00 UTC OF 29 TH APRIL 2026 TO 00 UTC OF 30
TH APRIL 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 5 DEG N: NW/W-LY 05/10 KTS BEC
SW-LY 05/10 KTS
TO THE E OF 77 DEG E.
2) REST AREA: SW/W-LY 10/15 KTS.
II) WAVE HEIGHT: 0.5-1.5 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 09 UTC OF 28 TH APRIL 2026 TO 00 UTC OF 29
TH APRIL 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 15 DEG E: SW/W-LY 10/20 KTS BEC
NW-LY 05/10 KTS
TO THE E OF 65 DEG E.
2) S OF 15 DEG N TO THE E OF 64 DEG E: NW/W-LY 05/10 KTS.
3) REST AREA: ANTI-CYCLONIC 05/10 KTS.
II) WAVE HEIGHT: 1.0-2.5 MTR.
III) WEATHER: 1) E OF 76 DEG E TO THE S OF 11 DEG N: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 76 DEG E TO THE S OF 11 DEG N: MODERATE.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 00 UTC OF 29 TH APRIL 2026 TO 00 UTC OF 30
TH APRIL 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 15 DEG N: SW/W-LY 10/20 KTS.
2) REST AREA: ANTI-CYCLONIC 05/15 KTS.
II) WAVE HEIGHT: 1.5-2.5 MTR.
III) WEATHER: FAIR.
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 28 TH APRIL 2026 TO 00 UTC OF 29
TH APRIL 2026.
I) WIND DIRECTION AND SPEED: NE-LY 05/10 KTS BEC SE/S-LY 05/15 KTS
TO THE W OF 94 DEG E.
II) WAVE HEIGHT: 0.5-1.5 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
BOB A3-FORECAST VALID FROM 00 UTC OF 29 TH APRIL 2026 TO 00 UTC OF 30
TH APRIL 2026.
I) WIND DIRECTION AND SPEED: NE/E-LY 05/10 KTS BEC SE/S-LY 05/15 KTS
TO THE W OF 90 DEG E.
II) WAVE HEIGHT: 0.5-1.5 MTR.
III) WEATHER: SCATTERED RA/TS.
IV) VISIBILITY: MODERATE.
BOB: A4: BAY OF BENGAL N OF 10 DEG N E OF 80 DEG E.
BOB A4-FORECAST VALID FROM 09 UTC OF 28 TH APRIL 2026 TO 00 UTC OF 29
TH APRIL 2026.
I) WIND DIRECTION AND SPEED: 1) E OF 88 DEG E TO THE S OF 15 DEG N:
ANTI-CYCLONIC
05/10 KTS.
2) REST AREA: S/SW-LY 10/25 KTS.
II) WAVE HEIGHT: 1.5-3.0 MTR
III) WEATHER: 1) E OF 86 DEG E: SCATTERED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 86 DEG E: MODERATE.
2) REST AREA: GOOD.
BOB A4-FORECAST VALID FROM 00 UTC OF 29 TH APRIL 2026 TO 00 UTC OF 30
TH APRIL 2026.
I) WIND DIRECTION AND SPEED: 1) E OF 88 DEG E TO THE S OF 15 DEG N:
ANTI-CYCLONIC
05/10 KTS.
2) REST AREA: S/SW-LY 10/25 KTS.
II) WAVE HEIGHT: 1.5-3.0 MTR.
III) WEATHER: SCATTERED RA/TS.
IV) VISIBILITY: MODERATE.
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 28/1700 UTC.=