1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-08-01, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 309: STRONG BARIC GRADIENT MOV NE WILL PROVOKE WINDS FORCE 8 FROM SECTOR
S WITH GUST BETWEEN 40S-60S AND 30W-20W FROM 01/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1026HPA 54S 43W MOV NE INTSF EXP 44S 30W BY 02/1200
LOW 1008HPA 35S 63W MOV SE DPN EXP 44S 30W BY 02/1200 EXTENDS WFNT AT 35S 63W
40S 67W MOV SE EXP 44S 30W 41S 40W BY 02/1200
RIDGE 33S 40W 45S 45W MOV NE EXP 30S 33W 40S 30W BY 02/1200
LOW 1008HPA 47S 65W MOV E WKN
011400 UTC 1.SEA ICE LIMIT 6830S 02000W 6341S 06138W 5821S 02003W 5937S 02334W
5635S 02428W 5735S 02946W 5755S 03449W 5842S 03908W 5936S 04601W 6057S 05139W
6238S 05743W 6320S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5549S 03444W 40X32NM
A23D 5333S 03558W 13X6NM A74A 5839S 04843W 27X17NM A77 6135S 05824W 27X4NM
3.ICEBERGS SMALLER THAN 10NM A23E 5542S 03317W 9X4NM A80A 6146S 05425W 8X4NM
ICEBERG1 5530S 03343W 4X1NM ICEBERG2 5236S 03658W 2X1NM ICEBERG3 5157S 03257W
3X3NM ICEBERG4 5303S 03012W 2X1NM ICEBERG5 5158S 02822W 2X1NM ICEBERG6 6122S
05155W 9X2NM ICEBERG7 5136S 03039W 2X1NM ICEBERG8 5759S 04340W 5X2NM ICEBERG9
5500S 03422W 3X2NM ICEBERG10 5017S 03200W 4X3NM ICEBERG11 5528S 03217W 3X1NM
ICEBERG12 6125S 05751W 3X1NM 4.ICEBERGS AREA A: 5849S 03410W 4700S 03460W 4700S
01960W 6024S 02013W B: 6019S 05056W 5660S 05100W 4900S 03458W 5849S 03410W C:
6023S 06716W 6159S 06716W 5660S 05100W 6119S 05056W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-08-2
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3/4 PROB OF HVY RAIN STORMS STARTING NIGTH IMPR
VIS POOR TO MODERATE
OUTER RIO DE LA PLATA: SECTOR N 5 WITH GUSTS INCR 5/6 WITH GUSTS BY 2/0900 PROB
OF HVY RAIN STORMS VIS POOR OCNL VERY POOR
URUGUAY SOUTH EAST COASTS: SECTOR N 6 WITH GUSTS DECR 6/5 BY 01/1800 INCR 6/7
WITH GUSTS BY 2/0900 PROB OF RAIN STORMS VIS VERY POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5 WITH GUSTS INCR 5/6 WITH GUSTS
BY 01/2100 PROB OF HVY RAIN STORMS NXT PROB OF SH VIS VERY POOR TO POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 3 VEER SECTOR S 5/6 WITH GUSTS BY
2/0600 VEER SECTOR W 6/7 WITH GUSTS BY 2/0900 PROB OF RAIN STORMS STARTING
EVENING VIS GOOD TO VERY POOR
PENINSULA DE VALDES COASTS(41S - 45S): VRB 3 VEER SECTOR S 5/6 WITH GUSTS BY
2/0900 PROB OF SH RAIN STARTING NIGTH VIS GOOD TO POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): VRB 3 BACK SECTOR S 3/4 BY 2/0000 INCR
5/6 WITH GUSTS BY 01/0900 TOWARDS THE END OF THE PERIOD WORSENING VIS GOOD TO
POOR
SOUTH PATAGONIA COASTS(48S - 54S): VRB 3 VEER SECTOR S 3/4 BY 2/0600 PROB OF
DRIZZLE RAIN STARTING NIGTH VIS GOOD TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): E 4/3 VEER SECTOR S BY 2/0000 INCR 4/5 BY
2/0900 PROB OF DRIZZLE RAIN NXT PROB OF MIST FOG PATCHES VIS MODERATE OCNL
POOR
ISLAS MALVINAS COASTS: NE 4 VEER VRB 3 BY 01/1800 VEER SECTOR S 4 BY 2/0600 PROB
OF DRIZZLE RAIN DURING THE MORNING PROB OF MIST FOG PATCHES VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 5/6 WITH GUSTS BACK SECTOR
S BY 2/0000 VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS INCR 6/7 BY 2/0000 PROB OF RAIN
STORMS STARTING NIGTH VIS MODERATE TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR S 6/7 WITH GUSTS INCR
7/8 GUST WITH 9 INTENSITY BY 01/1800 VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR S 5/6 WITH GUSTS BACK SECTOR E 4 BY 01/2100 BACK
SECTOR N 6/7 WITH GUSTS BY 2/0900 PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS
POOR OCNL MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: VRB 3/4 BACK SECTOR N 5/6
WITH GUSTS BY 01/1800 INCR 6/7 BY 2/1200 PROB OF RAIN STORMS VIS VERY POOR TO
POOR
W OF 50 - N OF 45S: SECTOR N 4/3 INCR 5/6 WITH GUSTS BY 2/0600 PROB OF RAIN
STORMS VIS VERY POOR
REST OF THE AREA: SECTOR N 3/4 VEER SECTOR E BY 2/0600 VEER SECTOR S 5/6 WITH
GUSTS BY 2/1200 PROB OF HVY RAIN STORMS STARTING EARLY MORNING VIS GOOD TO
POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR S 7 WITH GUSTS INCR 7/8
GUST WITH 9 INTENSITY BY 01/1800 DECR 6/5 BY 2/1200 PROB OF SNOW FALL VIS VERY
POOR
REST OF THE AREA: SECTOR S 7/6 WITH GUSTS VEER SECTOR W BY 2/0000 PROB OF SNOW
FALL STARTING NIGTH IMPR VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: VRB 3/4 VEER SECTOR N 5/6 WITH
GUSTS BY 01/2100 INCR 6/7 WITH GUSTS BY 2/0600 PROB OF RAIN STARTING EARLY
MORNING VIS POOR
REST OF THE AREA: NE 5/6 WITH GUSTS BACK SECTOR N 6/5 BY 2/0000 VEER VRB 3/4 BY
2/1200 PROB OF RAIN AND SNOW MIXTURE VIS POOR TO GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR E 4 VEER SECTOR S 3 BY 2/0300 PROB OF
DRIZZLE RAIN NXT PROB OF MIST FOG PATCHES VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 01, AUGUST 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 STORM WARNING:
794/2025 STRONG BARIC GRADIENT PROVOKES WINDS FORCE 10 WITH GUST IN 40S-61S 66W-70W
GALE WARNING:
795/2025 STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 9 FROM W WITH GUST IN 62S-65S 47W-58W FROM 01/0600
796/2025 COLD FRONT AT 73S 70W 68S 80W 66S 90W PROVOKES WINDS FORCE 9 WITH GUST IN 63S-70S 67W-90W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1019HPA 60S 60W MOV E DPN EXTENDS RIDGE AT 60S 45W 70S 25W
LOW 977HPA 73S 55W MOV E DPN
CFNT AT 73S 70W 68S 80W 66S 90W
311400 UTC 1.SEA ICE LIMIT 5752S 02000W 5626S 02657W 5806S 03434W 5923S 04228W 5926S 04942W 6122S 05407W 6156S 05653W 6215S 05929W 6232S 06059W 6247S 05924W 6409S 06344W 6615S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5552S 03347W 40X32NM A23D 5341S 03545W 13X6NM A74A 5842S 04851W 27X17NM A77 6135S 05824W 27X4NM 3.ICEBERGS SMALLER THAN 10NM A23E 5547S 03317W 9X4NM A80A 6146S 05425W 8X4NM ICEBERG1 5534S 03331W 4X1NM ICEBERG2 5243S 03651W 2X1NM ICEBERG3 5154S 03255W 3X3NM ICEBERG4 5140S 03043W 2X1NM ICEBERG5 5307S 03024W 2X1NM ICEBERG6 5158S 02822W 2X1NM ICEBERG7 6122S 05155W 9X2NM ICEBERG8 5130S 03054W 2X1NM ICEBERG9 5807S 04352W 5X2NM ICEBERG10 5501S 03422W 3X2NM ICEBERG11 5011S 03345W 4X3NM ICEBERG12 5551S 03207W 3X1NM ICEBERG13 6125S 05751W 3X1NM ICEBERG14 5612S 03312W 2X1NM 4.ICEBERGS AREA A: 5849S 03410W 4700S 03460W 4700S 01960W 6024S 02013W B: 6019S 05056W 5660S 05100W 4900S 03458W 5849S 03410W C: 6023S 06716W 6159S 06716W 5660S 05100W 6119S 05056W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-8-2
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 3/4 PROB OF FOG MIST VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: W 5/6 VEER NW BY 1/1800 PROB OF FOG MIST VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: NW 5/4 PROB OF FOG MIST VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: W 6/7 WITH GUSTS INCR W 8 WITH GUSTS BY 1/0600 PROB OF FOG MIST VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : N 4/5 PROB OF FOG MIST PROB OFSLIGHT SNOW FALL WORSENING TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL VERY POOR
MARGARITA BAY : NW 8/10 WITH GUSTS PROB OF FOG MIST PROB OFMOD HVY SNOW FALL VIS MODERATE TO VERY POOR
EREBUS Y TERROR GULF : NW 4/6 WITH GUSTS INCR 8/9 BY 1/0900 PROB OF FOG MIST SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO GOOD OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80 - N OF 65S: NW 5/6 INCR 8 WITH GUSTS BY 1/1200 VEER W 7 GUST WITH 8 INTENSITY BY 1/2100 PROB OF FOG MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS MODERATE TO VERY POOR
NORTHER BELLINGSHAUSEN SEA S OF 65 - W OF 80W: NW 8/9 BACK SW 5/6 WITH GUSTS BY 1/1800 PROB OF FOG MIST IMPR STARTING NOON PROB OFMOD IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA N OF 65 - E OF 80W: NW 4/5 INCR 8 WITH GUSTS BY 1/1800 PROB OF FOG MIST PROB OFMOD SNOW FALL TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 8/9 WITH GUSTS PROB OF FOG MIST PROB OFMOD HVY SNOW FALL VIS VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR S 3/4 VEER SW 5/4 BY 1/2100 PROB OF FOG MIST IMPR TOWARDS THE END OF THE PERIOD PROB OFMOD ISOL SNOW FALL STARTING EARLY MORNING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA S OF 65 - W OF 38W: NW 7/6 WITH GUSTS INCR 8/10 WITH GUSTS BY 1/0300 DECR 7/6 GUST WITH 8 INTENSITY BY 1/1800 PROB OF MIST FOG PATCHES VIS MODERATE OCNL POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF FOG MIST VIS MODERATE TO VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR W 4/5 PROB OF FOG PATCHES VIS GOOD OCNL POOR=