1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 31, MAY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
731/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 61S-72S 90W-70W UNTIL 31/2300
732/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 61S-65S 62W-55W UNTIL 31/2300
733/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA SOUTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 66S-71S 50W-30W UNTIL 31/1500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 972HPA 73S 45W MOV SE DPN
RIDGE 60S 52W 63S 40W 63S 30W MOV E WKN
CFNT AT 71S 90W 68S 85W 64S 89W MOV E DPN
301400 UTC 1.SEA ICE LIMIT 6342S 02000W 5958S 02618W 5844S 03218W 5825S 03758W 5933S 04316W 5941S 04813W 6029S 05247W 6315S 05655W 6335S 06033W 6415S 06336W 6616S 06605W 6607S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5609S 03220W 16XNM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4911S 02710W 5X1NM ICEBERG2 6330S 05625W 2X1NM ICEBERG3 6346S 05826W 3X1NM 4.ICEBERGS AREA A6444S 02000W 4403S 02000W 4403S 02600W 6251S 02600W B6251S 02600W 4403S 02600W 5000S 03800W 5818S 03800W C5818S 03800W 5000S 03800W 5857S 05600W 6247S 05600W D6247S 05600W 5857S 05600W 6500S 06716W 6825S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-6-1
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/6 VEER SECTOR W 6/7 WITH GUSTS BY 31/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 7 GUST WITH 8 INTENSITY VEER SECTOR W 8 GUST WITH 9 INTENSITY BY 31/0600 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 5/6 BACK SECTOR W 6/7 WITH GUSTS BY 31/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 7 GUST WITH 8 INTENSITY VEER SECTOR W 8 GUST WITH 9 INTENSITY BY 31/0600 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
GERLACHE STRAIT : SECTOR W 3/4 VEER NE 4/5 BY 31/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MARGARITA BAY : SECTOR N 5/6 BACK SECTOR N 7/8 WITH GUSTS BY 31/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
EREBUS Y TERROR GULF : SW 5/7 WITH GUSTS INCR SW 8 WITH GUSTS BY 31/0600 AFTERWARDS SECTOR W 4/5 BY 31/1500 VIS GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 7 GUST WITH 8 INTENSITY VEER NW 8 WITH GUSTS BY 31/0600 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 9 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 31/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 8 WITH GUSTS INCR NW 9 WITH GUSTS BY 31/0900 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 3/4 VEER NW 5/6 WITH GUSTS BY 31/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 7/8 WITH GUSTS BACK SECTOR W 7/5 BY 31/0900 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): NW 4/5 VEER SE 4/3 BY 31/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS EVENING VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-05-31, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1030HPA 37S 36W MOV E NC EXTENDS RIDGE AT 42S 35W 48S 34W 55S 33W MOV E
LOW 997HPA 55S 43W MOV E NC EXTENDS CFNT AT 42S 60W 45S 50W 50S 43W 53S 40W MOV
E ASOCIATED WITH OFNT AT 53S 40W 58S 40W 54S 48W
CFNT AT 58S 33W 55S 25W 53S 20W MOV E
301400 UTC 1.SEA ICE LIMIT 6342S 02000W 5958S 02618W 5844S 03218W 5825S 03758W
5933S 04316W 5941S 04813W 6029S 05247W 6315S 05655W 6335S 06033W 6415S 06336W
6616S 06605W 6607S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5609S 03220W 16XNM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4911S 02710W 5X1NM ICEBERG2 6330S 05625W
2X1NM ICEBERG3 6346S 05826W 3X1NM 4.ICEBERGS AREA A6444S 02000W 4403S 02000W
4403S 02600W 6251S 02600W B6251S 02600W 4403S 02600W 5000S 03800W 5818S 03800W
C5818S 03800W 5000S 03800W 5857S 05600W 6247S 05600W D6247S 05600W 5857S 05600W
6500S 06716W 6825S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-6-1
COASTAL AREAS:
INNER RIO DE LA PLATA: VRB 3 BACK SW 3 PROB OF MIST FOG PATCHES VIS GOOD OCNL
MODERATE
OUTER RIO DE LA PLATA: VRB 3 BACK SW 3 PROB OF MIST FOG PATCHES VIS GOOD OCNL
MODERATE
URUGUAY SOUTH EAST COASTS: SW 3/4 PROB OF MIST FOG PATCHES LOW PROB OF DRIZZLE
VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): W 4 BACK S 5 WITH GUSTS BY 31/1800 PROB
OF MIST FOG PATCHES VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 5/4 BACK SE 5 WITH GUSTS BY
31/0900 UNSTABLE TOWARDS THE END OF THE PERIOD VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): S 4 BACK SE 5 WITH GUSTS WORSENING WITH
PROB OF ISOL RAIN STARTING EARLY MORNING VIS GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): S 4 BACK SE 5/4 WITH GUSTS WORSENING
WITH PROB OF ISOL RAIN STARTING NIGTH VIS GOOD TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SE 5 WITH GUSTS BACK VRB 4/3 PROB OF ISOL
DRIZZLE RAIN PROB OF FOG FOG PATCHES VIS MODERATE OCNL GOOD
FIN DEL MUNDO COASTS(54S - 55S): S 5 WITH GUSTS VEER SW 5/4 LOW PROB OF ISOL
RAIN PROB OF MIST FOG PATCHES VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR S 5 WITH GUSTS PROB OF ISOL RAIN SPELLS OF GOOD
WEATHER VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: S 5/4 VEER NW 4/5 WITH GUSTS PROB
OF ISOL DRIZZLE VIS GOOD OCNL MODERATE
W OF 45W: NW 5/6 WITH GUSTS BACK SW 6/5 WITH GUSTS PROB OF SH RAIN NXT ISOL
RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 3 BACK NW 6/7 WITH GUSTS PROB OF ISOL RAIN NXT RAIN
ISOL STORMS VIS GOOD TO MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SW 6 WITH GUSTS BACK NW 5/6
WITH GUSTS PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
REST OF THE AREA: W 5 WITH GUSTS VEER NW 6/7 WITH GUSTS PROB OF ISOL DRIZZLE
NXT SH RAIN VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: NW 6/7 WITH GUSTS BACK SW 6
WITH GUSTS PROB OF SH RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: W 5 WITH GUSTS BACK SECTOR S 5/6 WITH GUSTS PROB OF ISOL
DRIZZLE VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30 - N OF 55S: SW 6 WITH GUSTS DECR
4 VEER NW 6/7 WITH GUSTS PROB OF RAIN VIS MODERATE OCNL POOR
W OF 30 - N OF 55S: NW 6 WITH GUSTS BACK SW 4/5 WITH GUSTS PROB OF RAIN VIS
MODERATE OCNL POOR
E OF 30 - S OF 55S: SW 6 WITH GUSTS DECR 4 VEER NW 5 WORSENING WITH PROB OF
DRIZZLE RAIN STARTING EVENING VIS GOOD TO MODERATE
REST OF THE AREA: VRB 3/4 VEER SECTOR S 5 PROB OF RAIN ISOL DRIZZLE VIS
MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: W 6 WITH GUSTS BACK
SW 6/7 WITH GUSTS PROB OF DRIZZLE RAIN NXT ISOL DRIZZLE VIS MODERATE OCNL POOR
W OF 50 - N OF 55S: SW 6 WITH GUSTS LOW PROB OF ISOL DRIZZLE VIS GOOD OCNL
MODERATE
REST OF THE AREA: S 5 VEER SW 6/7 WITH GUSTS UNSTABLE VIS GOOD OCNL MODERATE
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