1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-30, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 443: LOW 995HPA AT 39S 49W MOV SE DEEPENING PROVOKES WINDS FORCE 8
AROUND ITSELF WITH GUST BETWEEN 35S-45S AND 30W-50W
WARNING 440: STRONG BARIC GRADIENT MOV SW WILL PROVOKE WINDS FORCE 8 FROM SW
WITH GUST BETWEEN 50S-60S AND 20W-35W FROM 30/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 995HPA 36S 49W MOV SE DPN EXP 42S 43W BY 01/1200 MOV SE ASOCIATED WITH OFNT
AT 36S 45W 41S 49W 37S 53W
HIGH 1025HPA 40S 32W MOV NE
HIGH 1024HPA 51S 60W
CFNT AT 57S 33W 57S 44W
291400 UTC 1.SEA ICE LIMIT 5513S 02000W 5350S 02618W 5449S 03217W 5728S 03757W
5810S 04317W 5856S 04813W 6103S 05247W 6220S 05654W 6156S 06032W 6502S 06337W
6000S 06559W 6100S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5557S 04254W 28X25NM
D33B 5847S 04702W 21X12NM A76C 5507S 02526W 17X6NM A83 6053S 05217 12X7NM A85
5952S 05120W 10X3NM ICEBERG1 6002S 05126W 10X3NM 3.ICEBERGS SMALLER THAN 10NM
D32 5642S 03809W 9X6NM D33C 6144S 05348W 9X5NM ICEBERG2 5604S 04336W 5X3NM
ICEBERG3 5905S 04731W 5X3NM ICEBERG4 5613S 04732W 4X3NM ICEBERG5 5712S 04541W
3X1NM ICEBERG6 6003S 05143W 3X2NM ICEBERG7 5842S 04535W 3X2NM 4.ICEBERGS AREA
A5532S 02000W 5000S 02000W 5000S 04009W 5823S 04001W B5823S 04001W 5300S 04001W
5903S 06716W 6106S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-10-1
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4/5 WITH GUSTS PROB OF ISOL RAIN STARTING NIGTH
VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR S 5 WITH GUSTS PROB OF RAIN STARTING EARLY MORNING
VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 4/5 WITH GUSTS PROB OF ISOL RAIN STARTING
NIGTH VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 6 WITH GUSTS DECR 8/5 LOW PROB
OF ISOL RAIN DURING THE MORNING PROB OF SH STARTING NIGTH VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 5 WITH GUSTS PROB OF SH
SPELLS OF GOOD WEATHER VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5 WITH GUSTS VEER VRB 4 PROB
OF INTERMITTENT VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5 WITH GUSTS BACK SECTOR N LOW
PROB OF SH DURING THE EVENING IMPR PROB OF MIST VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 5 WITH GUSTS PROB OF MIST VIS
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 4 PROB OF MIST FOG PATCHES DURING
THE MORNING PROB OFISOL RAIN STARTING NIGTH IMPR VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR S 4 PROB OF INTERMITTENT SH PROB OF MIST DURING
THE MORNING VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) W OF 35 - E OF 45W: SECTOR N 8 WITH GUSTS
BACK SECTOR S PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
W OF 45W: SECTOR S 4/6 WITH GUSTS PROB OF INTERMITTENT SH VIS MODERATE OCNL
POOR
REST OF THE AREA: VRB 5 BACK SECTOR N 6/7 WITH GUSTS PROB OF ISOL RAIN VIS
MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) W OF 30 - N OF 45S: VRB 5 VEER SECTOR
E 7/8 WITH GUSTS PROB OF SH RAIN STARTING EVENING VIS MODERATE TO POOR
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS LOW PROB OF MIST DRIZZLE VIS
MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR E 7/8 WITH
GUSTS VEER SECTOR S PROB OF SH RAIN VIS POOR
REST OF THE AREA: SECTOR S 6 WITH GUSTS PROB OF ISOL RAIN AND SNOW MIXTURE
SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR S 4/8 WITH GUSTS DECR 7/6 PROB
OF SH OF SNOW SPELLS OF GOOD WEATHER VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR S 5 WITH GUSTS LOW PROB OF ISOL
SNOW FALL VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): VRB 5 LOW PROB OF ISOL RAIN AND SNOW MIXTURE
PROB OF MIST VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 30, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1198/2026 LOW 958HPA NORTHERN WEDDELL SEA MOV NE WEAKENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-70S 35W-20W UNTIL 01/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 958HPA 65S 22W MOV E WKN
RIDGE 60S 50W 63S 48W 66S 46W MOV E NC
TROUGH 74S 50W 72S 50W 70S 50W MOV E NC
RIDGE 61S 76W 63S 82W 64S 89W MOV E WKN
291400 UTC 1.SEA ICE LIMIT 5513S 02000W 5350S 02618W 5449S 03217W 5728S 03757W 5810S 04317W 5856S 04813W 6103S 05247W 6220S 05654W 6156S 06032W 6502S 06337W 6000S 06559W 6100S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5557S 04254W 28X25NM D33B 5847S 04702W 21X12NM A76C 5507S 02526W 17X6NM A83 6053S 05217 12X7NM A85 5952S 05120W 10X3NM ICEBERG1 6002S 05126W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5642S 03809W 9X6NM D33C 6144S 05348W 9X5NM ICEBERG2 5604S 04336W 5X3NM ICEBERG3 5905S 04731W 5X3NM ICEBERG4 5613S 04732W 4X3NM ICEBERG5 5712S 04541W 3X1NM ICEBERG6 6003S 05143W 3X2NM ICEBERG7 5842S 04535W 3X2NM 4.ICEBERGS AREA A5532S 02000W 5000S 02000W 5000S 04009W 5823S 04001W B5823S 04001W 5300S 04001W 5903S 06716W 6106S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-10-1
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 3/4 BACK SW 4 BY 30/2100 PROB OF MIST DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 3/4 BACK SECTOR W 5/6 BY 30/2100 PROB OF ISOL SNOW FALL WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 4 BACK SW 5 BY 1/0600 PROB OF ISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 5/6 BACK NW 5 BY 1/0300 PROB OF MIST DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
GERLACHE STRAIT : SECTOR W 4 BACK SW 3/4 BY 1/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR GRADUALLY STARTING EARLY MORNING VIS MODERATE OCNL GOOD
MARGARITA BAY : SECTOR W 4 DECR SW 3 BY 30/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR GRADUALLY STARTING EARLY MORNING VIS MODERATE OCNL POOR
EREBUS Y TERROR GULF : NW 4/5 BACK SW 4 BY 30/2100 AFTERWARDS SECTOR W 5 BY 1/0900 VIS GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): NW 4 DECR SECTOR W 3/4 BY 1/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EVENING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 5/6 BACK SECTOR W 5 BY 30/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
NORTHERN WEDDELL SEA W OF 35W: SW 6/7 WITH GUSTS DECR SW 5/4 BY 1/0300 PROB OF MIST DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 8/7 WITH GUSTS DECR SW 6/5 BY 1/0600 PROB OF INTERMITTENT SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 3/4 VEER SECTOR W 4 BY 1/0600 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL GOOD=