GMDSS BULLETIN NO- 17 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'N 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'E NORTHWARDS COVERING ENTIRE BAY OF BENGAL.
VALID FROM 09 UTC OF 28 TH OCTOBER 2026 TO 00 UTC OF 30 TH OCTOBER
2026.
PART-I STORM WARNING:
PART-II SYNOPTIC WEATHER SYSTEM AT 0300 UTC:
SUB: SEVERE CYCLONIC STORM ARNAB [PRONUNCIATION: ORNAB] OVER COASTAL
ANDHRA PRADESH & YANAM AND ADJOINING WESTCENTRAL BAY OF BENGAL
RED
MESSAGE]
THE VERY SEVERE CYCLONIC STORM ARNAB OVER WESTCENTRAL BAY OF BENGAL
OFF
ANDHRA PRADESH COAST MOVED SLOWLY NORTHWESTWARDS, CROSSED ANDHRA
PRADESH
& YANAM COASTS BETWEEN BAPATLA AND VISAKHAPATNAM TO THE SOUTHWEST
OF YANAM
NEAR LATITUDE 16.450N AND 81.90E, ABOUT 20 KM EAST-NORTHEAST OF
NARSAPUR, 40 KM
SOUTHWEST OF YANAM AND 60 KM SOUTHWEST OF KAKINADA DURING 0200 - 0800
HOURS IST
OF TODAY, THE 28TH OCTOBER, 2026 AS A VERY SEVERE CYCLONIC STORM WITH
THE
MAXIMUM SUSTAINED WIND SPEED OF 125-135 KMPH GUSTING TO 150 KMPH.
LATEST
OBSERVATIONS INDICATE THAT THE LANDFALL PROCESS COMPLETED WITH THE
CENTRAL
REGION MOVING COMPLETELY INTO LAND BY 0800 HRS IST.
CONTINUING TO MOVE FURTHER NORTHWESTWARDS, IT WEAKENED INTO A SEVERE
CYCLONIC STORM AND LAY CENTERED AT 0300 UTC OF TODAY, THE 28TH
OCTOBER, 2026
OVER COASTAL ANDHRA PRADESH & YANAM AND ADJOINING WESTCENTRAL BAY
OF BENGAL,
NEAR LATITUDE 16.5ON AND LONGITUDE 81.9OE, ABOUT 20 KM
EAST-NORTRHEAST OF
NARSAPUR (ANDHRA PRADESH), 40 KM SOUTHWEST OF YANAM (PUDUCHERRY UT),
60 KM
SOUTHWEST OF KAKINADA (ANDHRA PRADESH), 90 KM EAST-NORTHEAST OF
MACHILIPATNAM
(ANDHRA PRADESH), 120 KM EAST OF GANNAVARAM (ANDHRA PRADESH) AND 120
KM
SOUTHWEST OF TUNI.
IT IS VERY LIKELY TO MOVE NORTH-NORTHWESTWARDS DURING NEXT 48 HOURS
AND
WEAKEN GRADUALLY. IT WILL WEAKEN INTO A CYCLONIC STORM DURING NEXT 06
HOURS AND
FURTHER INTO A DEEP DEPRESSION DURING SUBSEQUENT 06 HOURS.
THE SYSTEM IS UNDER CONTINUOUS SURVEILLANCE OF THE DOPPLER WEATHER
RADAR AT
MACHILIPATNAM.
FORECAST LOCATION AND INTENSITY ARE GIVEN IN FOLLOWING TABLE:
DATE/TIME POSITION MAXIMUM SUSTAINED CATEGORY OF CYCLONIC
(UTC) (LAT. 0 N/ LONG.
0 E)
SURFACE
WIND SPEED (KMPH)
DISTURBANCE
28.10.26/0300 16.5/81.9 110-120 GUSTING TO 130 SEVERE CYCLONIC STORM
28.10.26/0600 16.7/81.8 100-110 GUSTING TO 120 SEVERE CYCLONIC STORM
28.10.26/1200 17.2/81.7 70-80 GUSTING TO 90 CYCLONIC STORM
28.10.26/1800 17.8/81.7 50-60 GUSTING TO 70 DEEP DEPRESSION
29.10.26/0000 18.5/81.8 35-45 GUSTING TO 55 DEPRESSION
29.10.26/1200 19.8/81.9 20-30 GUSTING TO 40 WELL MARKED LOW PRESSURE
AREA
WIND INFORMATION:
28.10.2026/0600:
WINDSPEEDS REACHING 27 KT AT AROUND 130 NM RADIUS FROM THE CENTRE IN
THE NE, SE,
QUADRANT, AROUND 140 NM FROM THE CENTRE IN THE SW QUADRANTS
RESPECTIVELY
AROUND 110 NM FROM THE CENTRE IN THE NW QUADRANTS RESPECTIVELY.
WINDSPEEDS REACHING 34 KT AT AROUND 85 NM RADIUS FROM THE CENTRE IN
THE NE, SE
QUADRANTS, AROUND 90 NM RADIUS FROM THE CENTRE IN THE SW, NW
QUADRANTS
RESPECTIVELY.
WINDSPEEDS REACHING 50 KT AT AROUND 70 NM RADIUS FROM THE CENTRE IN
THE NE, SE,
SW, NW QUADRANTS
28.10.2026/1200:
WINDSPEEDS REACHING 27 KT AT AROUND 130 NM RADIUS FROM THE CENTRE IN
THE NE, SE,
QUADRANT, AROUND 140 NM FROM THE CENTRE IN THE SW QUADRANTS
RESPECTIVELY
AROUND 110 NM FROM THE CENTRE IN THE NW QUADRANTS RESPECTIVELY.
28.10.2026/1800:
WINDSPEEDS REACHING 27 KT AT AROUND 130 NM RADIUS FROM THE CENTRE IN
THE NE, SE,
QUADRANT, AROUND 140 NM FROM THE CENTRE IN THE SW QUADRANTS
RESPECTIVELY
AROUND 110 NM FROM THE CENTRE IN THE NW QUADRANTS RESPECTIVELY.
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 OCT 2026 TO 00 UTC OF 29
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 65 DEG E: NE/N-LY 05/15 KTS BEC
NW-LY 05/10 KTS
TO THE S OF 5 DEG N.
2) REST AREA: N/NW-LY 10/15 KTS BEC W/SW-LY 10/20 KTS
TO THE E OF 74 DEG E.
II) WAVE HEIGHT: 2.0-3.0 MTR.
III) WEATHER: 1) E OF 67 DEG E TO THE S OF 8 DEG N: FAIRLY WIDESPREAD
RA/TS.
2) REST AREA: SCATTERED RA/TS.
IV) VISIBILITY: 1) E OF 67 DEG E TO THE S OF 8 DEG N: POOR.
2) REST AREA: MODERATE.
ARB A1-FORECAST VALID FROM 00 UTC OF 29 TH OCT 2026 TO 00 UTC OF 30
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 66 DEG E: NE/N-LY 05/15 KTS BEC
NW-LY 05/10 KTS
TO THE S OF 03 DEG N.
2) REST AREA: W/SW-LY 10/15 KTS.
II) WAVE HEIGHT: 1.5-3.0 MTR.
III) WEATHER: 1) E OF 69 DEG E: WIDESPREAD RA/TS.
2) REST AREA: SCATTERED RA/TS.
IV) VISIBILITY: 1) E OF 69 DEG E: VERY POOR.
2) REST AREA: 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 09 UTC OF 28 TH OCT 2026 TO 00 UTC OF 29
TH OCT 2026.
I) WIND DIRECTION AND SPEED: N/NE-LY 10/15 KTS.
II) WAVE HEIGHT: 0.5-2.0 MTR.
III) WEATHER: 1) S OF 12 DEG N: ISOLATED RA/TS.
2) REST AREA: FAIR.
IV) VISIBILITY: 1) S OF 12 DEG N: GOOD.
2) REST AREA: GOOD.
ARB A2-FORECAST VALID FROM 00 UTC OF 29 TH OCT 2026 TO 00 UTC OF 30
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 68 DEG E: N/NE-LY 10/15 KTS.
2) REST AREA: N/NW-LY 05/10 KTS.
II) WAVE HEIGHT: 0.5-2.0 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 28 TH OCT 2026 TO 00 UTC OF 29
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 90 DEG E: SE-LY 10/15 KTS BEC
SW/S-LY 10/20 KTS
TO THE N OF 05 DEG N.
2) REST AREA: CYCLONIC 05/15 KTS AT 97 DEG E AND 9 DEG N.
II) WAVE HEIGHT: 1.5-4.0 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB A3-FORECAST VALID FROM 00 UTC OF 29 TH OCT 2026 TO 00 UTC OF 30
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) S OF 05 DEG N: SE/E-LY 05/10 KTS.
2) REST AREA: SW/W-LY 05/15 KTS.
II) WAVE HEIGHT: 2.0-4.0 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 28 TH OCT 2026 TO 00 UTC OF 29
TH OCT 2026.
I) WIND DIRECTION AND SPEED: SE-LY 10/20 KTS BEC CYCLONIC 50/60 KTS
AT 16.5 DEG N AND 81.9 DEG E.
II) WAVE HEIGHT: 6.0-9.0 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 00 UTC OF 29 TH OCT 2026 TO 00 UTC OF 30
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) E OF 88 DEG E: CYCLONIC 05/15 KTS AT
94 DEG E
AND 11 DEG N.
2) REST AREA: SW-LY 10/15 KTS BEC SE-LY 05/15 KTS TO
THE N OF 14 DEG N.
II) WAVE HEIGHT: 4.0-6.0 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 28/1700 UTC.=
GLOBAL MARITIME 282230 IST
DATE/TIME OF ISSUE: 28-10-2026/1700 UTC
GMDSS BULLETIN II 281800
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 N 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 28 TH OCTOBER 2026 TO 12 UTC OF 30 TH OCTOBER
2026.
PART-I STORM WARNING: NIL
PART-II SYNOPTIC WEATHER SYSTEM AT 1200 UTC:
THE UPPER AIR CYCLONIC CIRCULATION OVER SOUTH ANDAMAN SEA &
NEIGHBOURHOOD
EXTENDING UPTO 5.8 KM ABOVE MEAN SEA LEVEL PERSISTS. UNDER ITS
INFLUENCE, A LOW-
PRESSURE AREA IS LIKELY TO FORM OVER THE SAME REGION 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 18 UTC OF 28 TH OCT 2026 TO 12 UTC OF 29
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 65 DEG E: NE/N-LY 05/15 KTS BEC
NW-LY 05/10 KTS
TO THE S OF 5 DEG N.
2) REST AREA: N/NW-LY 05/10 KTS BEC W/SW-LY 05/15 KTS
TO THE E OF 74 DEG E.
II) WAVE HEIGHT: 0.5-2.0 MTR.
III) WEATHER: 1) E OF 69 DEG E TO THE S OF 8 DEG N: FAIRLY WIDESPREAD
RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 69 DEG E TO THE S OF 8 DEG N: POOR.
2) REST AREA: GOOD.
ARB A1-FORECAST VALID FROM 12 UTC OF 29 TH OCT 2026 TO 12 UTC OF 30
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 66 DEG E: NE/N-LY 05/15 KTS.
2) REST AREA: NW/S-LY 05/10 KTS.
II) WAVE HEIGHT: 0.5-2.0 MTR.
III) WEATHER: 1) E OF 60 DEG E: FAIRLY WIDESPREAD RA/TS.
2) REST AREA: ISOLATED RA/TS.
IV) VISIBILITY: 1) E OF 60 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 28 TH OCT 2026 TO 12 UTC OF 29
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 68 DEG E: N/NE-LY 05/15 KTS.
2) REST AREA: NE/N-LY 0510 KTS BEC W/SW-LY 05/10 KTS
TO THE E OF 72 DEG E.
II) WAVE HEIGHT: 0.5-2.0 MTR.
III) WEATHER: FAIR.
IV) VISIBILITY: GOOD.
ARB A2-FORECAST VALID FROM 12 UTC OF 29 TH OCT 2026 TO 12 UTC OF 30
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 68 DEG E: N/NE-LY 05/10 KTS.
2) REST AREA: NE/N-LY 0510 KTS BEC W/SW-LY 05/10 KTS
TO THE E OF 70 DEG E.
II) WAVE HEIGHT: 0.5-2.0 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 18 UTC OF 28 TH OCT 2026 TO 12 UTC OF 29
TH OCT 2026.
I) WIND DIRECTION AND SPEED: 1) W OF 90 DEG E: SE-LY 05/10 KTS BEC
SW/S-LY 05/15 KTS
TO THE N OF 05 DEG N.
2) REST AREA: CYCLONIC 05/15 KTS AT 96 DEG E AND 9 DEG N.
II) WAVE HEIGHT: 1.5-4.0 MTR.
III) WEATHER: WIDESPREAD RA/TS.
IV) VISIBILITY: VERY POOR.
BOB A3-FORECAST VALID FROM 12 UTC OF 29 TH OCT 2026 TO 12 UTC OF 30
TH OCT 2026.
I) WIND DIRECTION AND SPEED: SE/E-LY 05/10 KTS BEC SW/W-LY 05 15 KTS
TO THE N OF 5 DEG N.
II) WAVE HEIGHT: 0.5-2.0 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 18 UTC OF 28 TH OCT 2026 TO 12 UTC OF 29
TH OCT 2026.
I) WIND DIRECTION AND SPEED: SW/S-LY 25/30 KTS.
II) WAVE HEIGHT: 4.0-6.0 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 12 UTC OF 29 TH OCT 2026 TO 12 UTC OF 30
TH OCT 2026.
I) WIND DIRECTION AND SPEED: CYCLONIC 10/15 KTS AT 95 DEG E AND 11
DEG N.
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 29/0800 UTC.=