GMDSS BULLETIN II 171800
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 17 TH SEPTEMBER 2026 TO 12 UTC OF 19 TH
SEPTEMBER 2026.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 0900 UTC:
THE LOW PRESSURE AREA OVER SAURASHTRA & ADJOINING NORTHEAST
ARABIAN SEA
PERSISTED OVER THE SAME REGION AT 0900 UTC OF TODAY 17TH SEPTEMBER,
2026. THE
ASSOCIATED CYCLONIC CIRCULATION EXTENDS UP TO 5.8 KM ABOVE MEAN SEA
LEVEL
TILTING SOUTHWARDS WITH HEIGHT.
THE UPPER-AIR CYCLONIC CIRCULATION OVER NORTH THAILAND PERSISTED OVER
THE SAME
REGION AT 0900 UTC OF TODAY, THE 17TH SEPTEMBER, 2026 AND EXTENDING
UPTO 7.6 KM
ABOVE MEAN SEA LEVEL. IT IS LIKELY TO EMERGE OVER THE NORTH ANDAMAN
SEA AROUND
18TH SEPTEMBER EVENING AND UNDER ITS INFLUENCE A LOW PRESSURE AREA IS
LIKELY TO
FORM OVER THE SAME REGION AROUND THE EVENING OF 19TH SEPTEMBER, 2026.
THEREAFTER, IT IS LIKELY TO INTENSIFY GRADUALLY AND MOVE
WESTNORTHWESTWARDS
TOWARDS SOUTH ODISHA-NORTH ANDHRA PRADESH COASTS DURING SUBSEQUENT
3-4
DAYS.
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 17 TH SEP 2026 TO 12 UTC OF 18
TH SEP 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 62 DEG E: SE/S-LY 05/15 KTS BEC
SW-LY 10/25 KTS
TO THE N OF 3 DEG N.
2) REST AREA: NW/W-LY 05/10 KTS BEC SW-LY 10/20 KTS
TO THE E OF 75 DEG E.
II) WAVE HEIGHT: 1.0-3.0 MTR.
III) WEATHER: 1) E OF 66 DEG E: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 66 DEG E: MODERATE.
2) REST AREA: GOOD.
ARB A1-FORECAST VALID FROM 12 UTC OF 18 TH SEP 2026 TO 12 UTC OF 19
TH SEP 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 61 DEG E: SW/W-LY 10/20 KTS.
2) REST AREA: NW/W-LY 05/10 KTS BEC W/SW-LY 10/20 KTS
TO THE E OF 74 DEG E.
II) WAVE HEIGHT: 1.0-3.0 MTR.
III) WEATHER: 1) E OF 65 DEG E: FAIRLY WIDESPREAD RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 65 DEG E: POOR.
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 18 UTC OF 17 TH SEP 2026 TO 12 UTC OF 18
TH SEP 2026.
I) WIND DIRECTION AND SPEED: SW-LY 10/20 KTS BEC W/NW-LY 10/15 KTS
TO THE E OF 65 DEG E.
II) WAVE HEIGHT: 1.0-3.0 MTR.
III) WEATHER: 1) E OF 64 DEG E TO THE S OF 23 DEG N: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 64 DEG E TO THE S OF 23 DEG N: MODERATE.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 12 UTC OF 18 TH SEP 2026 TO 12 UTC OF 19
TH SEP 2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 10/20 KTS BEC W/NW-LY 10/15 KTS
TO THE E OF 64 DEG E.
II) WAVE HEIGHT: 1.0-3.0 MTR.
III) WEATHER: 1) E OF 62 DEG E TO THE S OF 18 DEG N: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 62 DEG E TO THE S OF 18 DEG N: 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 17 TH SEP 2026 TO 12 UTC OF 18
TH SEP 2026.
I) WIND DIRECTION AND SPEED: S/SW-LY 10/15 KTS BEC SW/W-LY 15/25 KTS
TO THE N OF 4 DEG N.
II) WAVE HEIGHT: 1.5-3.5 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB A3-FORECAST VALID FROM 12 UTC OF 18 TH SEP 2026 TO 12 UTC OF 19
TH SEP 2026.
I) WIND DIRECTION AND SPEED: S/SW-LY 10/15 KTS BEC SW/W-LY 15/25 KTS
TO THE N OF 5 DEG N.
II) WAVE HEIGHT: 1.5-3.5 MTR.
III) WEATHER: 1) N OF 3 DEG N: WIDESPREAD RA/TS.
2) REST AREA: SCATTERED RA/TS.
IV) VISIBILITY: 1) N OF 3 DEG N: VERY POOR.
2) REST AREA: MODERATE.
BOB: A4: BAY OF BENGAL N OF 10 DEG N E OF 80 DEG E.
BOB A4-FORECAST VALID FROM 18 UTC OF 17 TH SEP 2026 TO 12 UTC OF 18
TH SEP 2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 10/20 KTS.
II) WAVE HEIGHT: 1.0-3.0 MTR.
III) WEATHER: FAIRLY WIDESPREAD RA/TS.
IV) VISIBILITY: POOR.
BOB A4-FORECAST VALID FROM 12 UTC OF 18 TH SEP 2026 TO 12 UTC OF 19
TH SEP 2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 10/20 KTS BEC CYCLONIC 05/10 KTS
AT 96 DEG E AND 12 DEG N.
II) WAVE HEIGHT: 1.0.-3.0 MTR.
III) WEATHER: 1) S OF 15 DEG N: WIDESPREAD RA/TS.
2) REST AREA: SCATTERED RA/TS.
IV) VISIBILITY: 1) S OF 15 DEG N: VERY POOR.
2) REST AREA: 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 18/0800 UTC.=