SPL GMDSS BULLETIN NO-1 170430
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
30E NORTHWARDS COVERING ENTIRE BAY OF BENGAL.
VALID FROM 0430 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF 18 TH AUGUST
2026.
PART-I STORM WARNING: NIL.
PART-II SYNOPTIC WEATHER SYSTEM AT 0000 UTC:
YESTERDAY'S WELL MARKED LOW PRESSURE AREA OVER NORTHWEST BAY OF
BENGAL &
ADJOINING WEST BENGAL-NORTH ODISHA COASTS MOVED NEARLY
NORTHWESTWARDS,
CONCENTRATED INTO A DEPRESSION AND LAY CENTRED AT 0000 UTC OF TODAY,
THE 17 TH
AUGUST, 2026, OVER COASTAL WEST BENGAL AND ADJOINING AREAS OF
BANGLADESH &
NORTHWEST BAY OF BENGAL NEAR LATITUDE 22.5ON AND LONGITUDE 88.3OE
CLOSE TO
KOLKATA ABOUT 80KM WEST-SOUTHWEST OF SATKHIRA (BANGLADESH), 160KM
SOUTHEAST
OF BANKURA (WEST BENGAL), AND 180 KM NORTHEAST OF BALESHWAR (ODISHA).
IT IS VERY LIKELY TO MOVE NORTHWESTWARDS TOWARDS JHARKHAND ACROSS
GANGETIC
WEST BENGAL 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 0430 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF
17 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: 1) N OF 5 DEG N: SW/W-LY 10/30 KTS.
2) REST AREA: S/SW-LY 05/15 KTS.
II) WAVE HEIGHT: 2.0-4.0 MTR.
III) WEATHER: ISOLATED RA/TS.
IV) VISIBILITY: GOOD.
ARB A1-FORECAST VALID FROM 12 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF
18 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: 1) N OF 5 DEG N: SW/W-LY 10/30 KTS BEC
W/NW-LY 10/20 KTS
TO THE E OF 70 DEG E.
2) REST AREA: S/SW-LY 05/15 KTS.
II) WAVE HEIGHT: 2.5-3.5 MTR.
III) WEATHER: ISOLATED RA/TS.
IV) VISIBILITY: 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 0430 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF
17 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 15/30 KTS.
II) WAVE HEIGHT: 2.0-3.5 MTR.
III) WEATHER: 1) E OF 69 DEG E: SCATTERED RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 69 DEG E: MODERATE.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 12 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF
18 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 15/30 KTS.
II) WAVE HEIGHT: 2.0-4.0 MTR.
III) WEATHER: 1) E OF 67 DEG E: FAIRLY WIDESPREAD RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) E OF 67 DEG E: POOR.
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 0430 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF
17 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW-LY 10/20 KTS.
II) WAVE HEIGHT: 2.0-3.0 MTR.
III) WEATHER: SCATTERED RA/TS.
IV) VISIBILITY: MODERATE.
BOB A3-FORECAST VALID FROM 12 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF
18 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/W-LY 10/20 KTS.
II) WAVE HEIGHT: 2.0-3.0 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 0430 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF
17 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/S-LY 15/25 KTS BEC CYCLONIC 15/25 KTS
AT 88.3 DEG E
AND 22.5 DEG N.
II) WAVE HEIGHT: 2.0-3.5 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB A4-FORECAST VALID FROM 12 UTC OF 17 TH AUGUST 2026 TO 12 UTC OF
18 TH AUGUST
2026.
I) WIND DIRECTION AND SPEED: SW/S-LY 15/25 KTS BEC CYCLONIC 15/25 KTS
AT 88 DEG E
AND 23 DEG N.
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 17/0800 UTC.=