GMDSS BULLETIN I 180900
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 18 TH OCTOBER 2026 TO 00 UTC OF 20 TH OCTOBER
2026.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 0300 UTC:
UNDER THE INFLUENCE OF THE UPPER AIR CYCLONIC CIRCULATION OVER
SOUTHWEST
ARABIAN SEA, A LOW PRESSURE AREA HAS FORMED OVER THE SAME REGION AT
0830 HRS
IST OF TODAY, THE 18TH OCTOBER 2026. IT IS LIKELY TO BECOME MORE
MARKED DURING
NEXT 24 HOURS.
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 18 TH OCT 2026 TO 00 UTC OF 19
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 70 DEG E: SE/E-LY 05/10 KTS BEC
CYCLONIC 05/15 KTS
AT 05 DEG N AND 59 DEG E.
2) REST AREA: SE/S-LY 05/10 KTS BEC SW-LY 05/10 KTS TO
THE N OF 5 DEG N.
II) WAVE HEIGHT: 1.0-2.5 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
ARB A1-FORECAST VALID FROM 00 UTC OF 19 TH OCT 2026 TO 00 UTC OF 20
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 70 DEG E: CYCLONIC 05/15 KTS AT
05 DEG N AND 60
DEG E.
2) REST AREA: SE/E-LY 05/10 KTS.
II) WAVE HEIGHT: 1.0-2.5 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY 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 18 TH OCT 2026 TO 00 UTC OF 19
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 20 DEG N: ANTI-CYCLONIC 05/10
KTS.
2) REST AREA: N/NE-LY 05/10 KTS.
II) WAVE HEIGHT: 0.5-1.5 MTR.
III) WEATHER: 1) E OF 68 DEG E TO THE S OF 16 DEG: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 68 DEG E TO THE S OF 16 DEG: MODERATE.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 00 UTC OF 19 TH OCT 2026 TO 00 UTC OF 20
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 20 DEG N: ANTI-CYCLONIC 05/10
KTS.
2) REST AREA: NE-LY 05/10 KTS.
II) WAVE HEIGHT: 0.5-1.5 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 18 TH OCT 2026 TO 00 UTC OF 19
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) N OF 05 DEG N TO THE E OF 90 DEG E:
NW-LY 05/10 KTS.
2) REST AREA: SE/S-LY 05/10 KTS.
II) WAVE HEIGHT: 1.0-2.0 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB A3-FORECAST VALID FROM 00 UTC OF 19 TH OCT 2026 TO 00 UTC OF 20
TH OCT 2026.
I) WIND DIRECTION AND SPEED1) N OF 05 DEG N: N/NW-LY 05/10 KTS.
2) REST AREA: S/SE-LY 05/10 KTS.
II) WAVE HEIGHT: 1.0-2.0 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 18 TH OCT 2026 TO 00 UTC OF 19
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) E OF 88 DEG E: N/NW-LY 05/10 KTS
2) REST AREA: SW/S-LY 05/10 KTS
II) WAVE HEIGHT: 0.5 -2.0 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
BOB A4-FORECAST VALID FROM 00 UTC OF 19 TH OCT 2026 TO 00 UTC OF 20
TH OCT 2026.
I) WIND DIRECTION AND SPEED: NE-LY 05/10 KTS.
II) WAVE HEIGHT: 0.5-2.0 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 18/1700 UTC.=