1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-05-28, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 234: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR S WITH
GUST BETWEEN 55S-60S 20W-30W FROM 29/0600
WARNING 233: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR S WITH
GUST BETWEEN 35S-45S 30W-40W FROM 29/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
271400 UTC 1.SEA ICE LIMIT 6438S 02000W 6216S 02618W 5906S 03217W 5914S 03758W
5940S 04317W 5941S 04813W 6027S 05247W 6249S 05655W 6344S 06032W 6412S 06336W
6526S 06559W 6635S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5626S 03243W 16X7NM
3.ICEBERGS SMALLER THAN ICEBERG1 4911S 02710W 5X1NM ICEBERG2 6324S 05646W 2X1NM
4.ICEBERGS AREA A6500S 02000W 4500S 02000W 4800S 03500W 5930S 03500W B5930S
03500W 5100S 03500W 5500S 04500W 6020S 04500W C6020S 04500W 5700S 04500W 6000S
05500W 6205S 05500W D6205S 05500W 6000S 05500W 6400S 06716W 6645S 06716W
LOW 1002HPA 45S 35W MOV NE DPN EXP 38S 22W BY 29/1200 EXTENDS OFNT AT 45S 23W
45S 38W 43S 37W MOV NE
HIGH 1028HPA 50S 58W MOV NE INTSF EXP 42S 49W BY 29/1200 EXTENDS RIDGE AT 50S
58W 42S 56W 35S 54W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-05-29
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 MIST FOG PATCHES DISSIPATING VIS MODERATE TO
GOOD
OUTER RIO DE LA PLATA: SECTOR E 3/4 MIST FOG PATCHES DISSIPATING VIS MODERATE TO
GOOD
URUGUAY SOUTH EAST COASTS: SECTOR S 3 BACK SECTOR E 3 MIST FOG PATCHES
DISSIPATING PROB OFISOL RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): NW 3 VEER SECTOR E 3 BACK SECTOR N 3/4
MIST FOG PATCHES VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 3/4 MIST FOG PATCHES VIS
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): NE 4/5 WITH GUSTS BACK N 5/6 WITH GUSTS
MIST FOG PATCHES DISSIPATING VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR E 5 WITH GUSTS BACK SECTOR N 5/6
WITH GUSTS PROB OF ISOL DRIZZLE RAIN SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 5/6 WITH GUSTS PROB OF RAIN SPELLS
OF GOOD WEATHER VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 6/5 WITH GUSTS PROB OF RAIN STARTING
NIGTH VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR N 3/6 WITH GUSTS PROB OF RAIN TOWARDS THE END OF
THE PERIOD VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR W 6/4 WITH GUSTS BACK SECTOR
S 4/3 PROB OF SH RAIN VIS MODERATE
E OF 40W: SECTOR W 5 WITH GUSTS BACK SECTOR S 6/8 WITH GUSTS BY 29/0600 PROB OF
ISOL SH RAIN VIS MODERATE
REST OF THE AREA: SECTOR S 4/6 WITH GUSTS BACK SECTOR E 4/5 WITH GUSTS PROB OF
ISOL RAIN IMPR TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45 - E OF 30W: SECTOR S 4/6 WITH
GUSTS PROB OF SH RAIN IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE
S OF 45 - E OF 30W: SECTOR S 4/6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE
TOWARDS NIGTH IMPR VIS MODERATE
N OF 45 - E OF 30W: S 4/6 WITH GUSTS INCR 8 WITH GUSTS BY 29/0300 PROB OF SH
RAIN VIS MODERATE TO POOR
REST OF THE AREA: SECTOR S 5/6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE IMPR
TOWARDS NIGTH VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 6/5 WITH GUSTS PROB
OF ISOL RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE OCNL
POOR
REST OF THE AREA: SECTOR S 5 WITH GUSTS BACK SECTOR N 3/5 WITH GUSTS PROB OF
ISOL RAIN DURING THE MORNING VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55 - E OF 30W: SECTOR S 6 WITH
GUSTS VEER SECTOR W 6 WITH GUSTS BACK SECTOR S 6/8 WITH GUSTS BY 29/0600 PROB OF
RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 5/6 WITH GUSTS TEMPO VEER SECTOR W 6 WITH GUSTS PROB
OF ISOL RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR S 5/6 WITH GUSTS VEER
SECTOR W 6 WITH GUSTS PROB OF ISOL RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD
WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 4/6 WITH GUSTS VEER SECTOR N 5/6 WITH GUSTS PROB OF
ISOL RAIN SNOW FALL TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 4/5 WITH GUSTS INCR 6 WITH GUSTS
PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 28, MAY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
722/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 IN 60S-63S 61W-53W UNTIL 28/1500
723/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST BACK SW 8 WITH GUST IN 64S-70S 50W-35W UNTIL 28/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 977HPA 68S 33W MOV E DPN
RIDGE 60S 60W 63S 59W 72S 58W MOV E WKN
LOW 1000HPA 62S 88W MOV E DPN
271400 UTC 1.SEA ICE LIMIT 6438S 02000W 6216S 02618W 5906S 03217W 5914S 03758W 5940S 04317W 5941S 04813W 6027S 05247W 6249S 05655W 6344S 06032W 6412S 06336W 6526S 06559W 6635S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5626S 03243W 16X7NM 3.ICEBERGS SMALLER THAN ICEBERG1 4911S 02710W 5X1NM ICEBERG2 6324S 05646W 2X1NM 4.ICEBERGS AREA A6500S 02000W 4500S 02000W 4800S 03500W 5930S 03500W B5930S 03500W 5100S 03500W 5500S 04500W 6020S 04500W C6020S 04500W 5700S 04500W 6000S 05500W 6205S 05500W D6205S 05500W 6000S 05500W 6400S 06716W 6645S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-05-29
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NE 4/5 WITH GUSTS BACK NW 5/4 BY 28/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY VEER NW 5/4 WITH GUSTS BY 28/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: NE 4/5 WITH GUSTS BACK NW 5/4 BY 28/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS VERY POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY VEER NW 5/4 WITH GUSTS BY 28/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : NE 3/4 VEER SECTOR E 4/5 BY 29/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
MARGARITA BAY : NE 4/5 BACK SECTOR N 4/3 BY 29/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NIGTH VIS POOR TO MODERATE OCNL GOOD
EREBUS Y TERROR GULF : NE 3/4 BACK NW 3 BY 28/2100 PROB OF FOG AND MIST IN PATCHES WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: NE 4/5 BACK SECTOR W 4/5 BY 28/2100 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: SECTOR N 4/5 BACK NW 4/5 BY 29/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 5/6 VEER NE 5/4 BY 29/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 5/7 GUST WITH 8 INTENSITY INCR SECTOR W 8 WITH GUSTS BY 28/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SW 8 WITH GUSTS VEER SECTOR S 5 WITH GUSTS BY 28/1200 PROB OF MIST PROB OFMOD SNOW FALL IMPR DURING THE NIGTH VIS POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 BACK SECTOR E 4/5 BY 28/2100 VIS GOOD=