1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-05-31, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 236: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 40S-45S 30W-40W FROM 01/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
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
HIGH 1039HPA 34S 29W MOV E EXTENDS RIDGE AT 34S 29W 48S 27W 57S 27W MOV E
LOW 990HPA 55S 39W MOV E EXTENDS CFNT AT 54S 35W 45S 45W 44S 40W MOV NE
ASOCIATED WITH FRONTAL WAVE 54S 35W 57S 40W 54S 44W
HIGH 1035HPA 53S 83W MOV NE EXP 45S 62W BY 01/0900 EXTENDS RIDGE AT 53S 83W 49S
69W 43S 65W MOV NE
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-6-1
COASTAL AREAS:
INNER RIO DE LA PLATA: VRB 3 VEER MIST FOG PATCHES DISSIPATING PROB OF MIST FOG
PATCHES STARTING NIGTH VIS GOOD OCNL POOR
OUTER RIO DE LA PLATA: SECTOR W 3 BACK SE MIST FOG PATCHES DISSIPATING PROB OF
MIST FOG PATCHES STARTING NIGTH VIS GOOD OCNL POOR
URUGUAY SOUTH EAST COASTS: SW 3 BACK SECTOR S 3/4 MIST FOG PATCHES LOW PROB OF
MIST FOG PATCHES DRIZZLE STARTING NIGTH VIS GOOD OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 3 BACK SE 3/4 MIST FOG PATCHES
DISSIPATING PROB OF MIST FOG PATCHES STARTING EARLY MORNING VIS GOOD OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 3 BACK SECTOR E 3/4 MIST FOG
PATCHES DISSIPATING PROB OF MIST FOG PATCHES STARTING EARLY MORNING VIS GOOD
OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SE 3 BACK NE 3/4 PROB OF DRIZZLE RAIN
VIS MODERATE OCNL GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SE 4/3 BACK NE 3/4 PROB OF DRIZZLE RAIN
VIS MODERATE OCNL GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 3 BACK SECTOR N 3/5 WITH GUSTS
MIST DISSIPATING PROB OF MIST FOG PATCHES STARTING EARLY MORNING VIS MODERATE
OCNL GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 3/4 LOW PROB OF ISOL RAIN PROB OF
MIST FOG PATCHES VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SW 5/4 WITH GUSTS PROB OF ISOL RAIN IMPR VIS MODERATE TO
GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR W 3 VEER SECTOR N 5/8 WITH
GUSTS BY 1/0900 PROB OF HVY RAIN STORMS FROM 1/0900 VIS GOOD TO POOR
E OF 40 - W OF 30W: SECTOR N 5/8 WITH GUSTS BACK SECTOR W 7/6 WITH GUSTS PROB
OF HVY RAIN STORMS NXT PROB OF SH VIS POOR OCNL MODERATE
E OF 50 - W OF 40W: SW 7 WITH GUSTS PROB OF SH VIS POOR OCNL MODERATE
REST OF THE AREA: SW 6 WITH GUSTS VEER SECTOR S 5 WITH GUSTS PROB OF ISOL RAIN
VIS MODERATE OCNL GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) NE OF THE REGION: SECTOR W 5 WITH
GUSTS VEER SECTOR N 5/8 WITH GUSTS PROB OF RAIN VIS MODERATE TO POOR
NW OF THE REGION: SECTOR N 7/8 WITH GUSTS BACK SECTOR W 7 WITH GUSTS PROB OF
HVY RAIN STORMS VIS MODERATE TO POOR
SE OF THE REGION: SECTOR W 5 WITH GUSTS VEER SECTOR N 5/7 WITH GUSTS PROB OF
RAIN VIS MODERATE TO POOR
REST OF THE AREA: SECTOR N 7 WITH GUSTS BACK SECTOR W 7 WITH GUSTS PROB OF HVY
RAIN STORMS VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 55W: SECTOR S 7 WITH GUSTS PROB
OF SH VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 5/4 WITH GUSTS PROB OF ISOL DRIZZLE IMPR VIS
MODERATE TO GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) NE OF THE REGION: SECTOR N 7 WITH GUSTS
PROB OF HVY SH RAIN VIS POOR
SE OF THE REGION: SECTOR W 5 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS
MODERATE OCNL POOR
REST OF THE AREA: VRB 5 VEER SW 6 WITH GUSTS PROB OF SNOW FALL VIS MODERATE TO
POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SW 7 WITH GUSTS PROB OF SH RAIN AND
SNOW MIXTURE VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/5 WITH GUSTS PROB OF ISOL RAIN
IMPR VIS POOR TO MODERATE
-----------------------------------------------------------------
NNNN=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 31, MAY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
736/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 IN 61S-72S 90W-70W FROM 31/2300
737/2026 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
738/2026 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 09:00UTC
RIDGE 60S 60W 65S 53W 70S 52W MOV E WKN
LOW 982HPA 70S 70W MOV SE DPN EXTENDS CFNT AT 70S 70W 67S 78W 64S 89W 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 12:00 UTC VALID UNTIL 12:00 UTC 2026-6-1
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 6/7 VEER NW 8 WITH GUSTS BY 31/1800 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 9 WITH GUSTS BY 31/1800 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: SECTOR W 6/7 VEER NW 8 WITH GUSTS BY 31/1800 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 9 WITH GUSTS BY 31/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
GERLACHE STRAIT : SW 3/4 VEER NE 4/5 BY 31/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MARGARITA BAY : SECTOR W 7 VEER NW 6/5 WITH GUSTS BY 1/0300 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 1/0300 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: NW 7/8 GUST WITH 9 INTENSITY BACK SECTOR W 9 WITH GUSTS BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 8 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 31/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NIGTH VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 8 GUST WITH 9 INTENSITY BACK SECTOR W 6/5 WITH GUSTS BY 1/0300 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER STARTING NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 5/6 INCR SECTOR W 7/8 WITH GUSTS BY 31/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 7/8 WITH GUSTS VEER NW 9 WITH GUSTS BY 31/2100 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SW 5/4 BACK SE 4/3 BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS EVENING VIS MODERATE TO GOOD=