GMDSS BULLETIN II 181800
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 18 UTC OF 18 TH AUGUST 2026 TO 12 UTC OF 20 TH AUGUST
2026.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 1200 UTC:
DEPRESSION OVER JHARKHAND MOVED SLOWLY WEST-NORTHWESTWARDS WITH A
SPEED OF 3 KMPH DURING PAST 6 HOURS AND LAY CENTRED AT 1200 UTC OF
TODAY,
THE 18TH AUGUST, 2026, OVER THE SAME REGION, NEAR LATITUDE 24.1ON AND
LONGITUDE 85.3OE, CLOSE TO NORTH-NORTHWEST OF HAZARIBAGH (JHARKHAND),
90
KM NORTH OF RANCHI (JHARKHAND), 80 KM SOUTH-SOUTHEAST OF GAYA
(BIHAR),
130 KM EAST OF DALTONGANJ (JHARKHAND) AND 150 KM SOUTHEAST OF DEHRI
(BIHAR).
IT IS VERY LIKELY TO CONTINUE TO MOVE WEST-NORTHWESTWARDS ACROSS
JHARKHAND & BIHAR AND WEAKEN INTO A WELL MARKED LOW PRESSURE AREA
DURING NEXT 12 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 18 UTC OF 18 TH AUGUST 2026 TO 12 UTC OF
19 TH 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: S/SW-LY 05/15 KTS.
II) WAVE HEIGHT: 2.0-4.0 MTR.
III) WEATHER: 1) E OF 56 DEG E: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 56 DEG E: MODERATE.
2) REST AREA: GOOD.
ARB A1-FORECAST VALID FROM 12 UTC OF 19 TH AUGUST 2026 TO 12 UTC OF
20 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: 1) N OF 5 DEG N: SW/W-LY 10/25 KTS BEC
NW/W-LY 10/20 KTS
TO THE E OF 68 DEG E.
2) REST AREA: S/SW-LY 10/15 KTS.
II) WAVE HEIGHT: 2.0-4.0 MTR.
III) WEATHER: SCATTERED RA/TS.
IV) VISIBILITY: MODERATE.
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 18 TH AUGUST 2026 TO 12 UTC OF
19 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 15/30 KTS BEC W/NW-LY 10/20 KTS
TO THE E OF 70 DEG E.
II) WAVE HEIGHT: 2.0-4.5 MTR.
III) WEATHER: 1) E OF 62 DEG E TO THE S OF 13 DEG N: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 62 DEG E TO THE S OF 13 DEG N: MODERATE.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 12 UTC OF 19 TH AUGUST 2026 TO 12 UTC OF
20 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 15/30 KTS BEC W/NW-LY 10/20 KTS
TO THE E OF 69 DEG E.
II) WAVE HEIGHT: 2.0-4.0 MTR.
III) WEATHER: 1) E OF 70 DEG E: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 70 DEG E: 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 18 UTC OF 18 TH AUGUST 2026 TO 12 UTC OF
19 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW-LY 10/25 KTS.
II) WAVE HEIGHT: 1.0-3.0 MTR.
III) WEATHER: SCATTERED RA/TS.
IV) VISIBILITY: MODERATE.
BOB A3-FORECAST VALID FROM 12 UTC OF 19 TH AUGUST 2026 TO 12 UTC OF
20 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/S-LY 10/25 KTS.
II) WAVE HEIGHT: 2.0-3.5 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 18 UTC OF 18 TH AUGUST 2026 TO 12 UTC OF
19 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/S-LY 15/20 KTS.
II) WAVE HEIGHT: 1.0-3.0 MTR.
III) WEATHER: 1) E OF 84 DEG E: WIDESPREAD RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 84 DEG E: VERY POOR.
2) REST AREA: GOOD.
BOB A4-FORECAST VALID FROM 12 UTC OF 19 TH AUGUST 2026 TO 12 UTC OF
20 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW-LY 10/20 KTS.
II) WAVE HEIGHT: 2.0-3.5 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY 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 19/0800 UTC.=