1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 31, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1112/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 62S-64S 58W-50W UNTIL 31/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 972HPA 68S 72W MOV E DPN
LOW 970HPA 69S 58W MOV E DPN
LOW 982HPA 63S 62W MOV E DPN
LOW 984HPA 63S 33W MOV E WKN
301400 UTC 1.SEA ICE LIMIT 5523S 02000W 5404S 02618W 5212S 03217W 5521S 03758W 5652S 04316W 5829S 04814W 5954S 05248W 6125S 05655W 6101S 06033W 6035S 06336W 6028S 06559W 6137S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5331S 02832W 17X6NM A81 5904S 04830W 28X25NM D33B 5930S 05025W 21X12NM 3.ICEBERGS SMALLER THAN 10NM D33C 6142S 05408W 9X5NM ICEBERG1 5901S 05141W 5X3NM ICEBERG2 6052S 05404W 5X3NM ICEBERG3 6031S 05231W 6X4NM 4.ICEBERGS AREA A5628S 02000W 5200S 02000W 5100S 03000W 5400S 03900W 5653S 03900W B5653S 03900W 5500S 03900W 5500S 05000W 6021S 05000W C6021S 05000W 5800S 05400W 5800S 05400W 6000S 06716W 6230S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-9-1
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 4/5 BACK SECTOR W 5/6 BY 1/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 5/6 BACK SECTOR W 5/4 WITH GUSTS BY 1/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: NW 4/5 BACK SECTOR W 5/6 BY 1/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 5/6 WITH GUSTS BACK SECTOR W 5/4 WITH GUSTS BY 1/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : NE 3/4 BACK SW 4/3 BY 31/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR E 7/5 WITH GUSTS BACK SECTOR W 5/4 BY 31/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 7 GUST WITH 8 INTENSITY VEER NW 7 GUST WITH 8 INTENSITY BY 1/0000 PROB OF FOG AND MIST IN PATCHES IMPR DURING THE EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 4/5 INCR SECTOR W 7 WITH GUSTS BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EVENING VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 4/5 VEER SECTOR W 6/7 WITH GUSTS BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 6/7 WITH GUSTS BACK SECTOR S 7/8 WITH GUSTS BY 1/0000 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER STARTING EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: NW 7 GUST WITH 8 INTENSITY BACK SECTOR N 5 WITH GUSTS BY 31/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING DURING THE NOON VIS GOOD TO MODERATE OCNL VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR N 3/4 VEER NE 5/6 WITH GUSTS BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 4/5 BACK NE 5 BY 1/0000 PROB OF MIST VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-31, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 396: LOW 1003HPA AT 45S 62W MOV SE DEEPENING EXPECTED 51S 42W BY 01/1200
PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST BETWEEN 45S-50S AND 30W-60W FROM
31/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
301400 UTC 1.SEA ICE LIMIT 5523S 02000W 5404S 02618W 5212S 03217W 5521S 03758W
5652S 04316W 5829S 04814W 5954S 05248W 6125S 05655W 6101S 06033W 6035S 06336W
6028S 06559W 6137S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5331S 02832W 17X6NM
A81 5904S 04830W 28X25NM D33B 5930S 05025W 21X12NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6142S 05408W 9X5NM ICEBERG1 5901S 05141W 5X3NM ICEBERG2 6052S 05404W 5X3NM
ICEBERG3 6031S 05231W 6X4NM 4.ICEBERGS AREA A5628S 02000W 5200S 02000W 5100S
03000W 5400S 03900W 5653S 03900W B5653S 03900W 5500S 03900W 5500S 05000W 6021S
05000W C6021S 05000W 5800S 05400W 5800S 05400W 6000S 06716W 6230S 06716W
LOW 1003HPA 45S 62W MOV SE DPN EXP 51S 52W BY 01/1200 EXTENDS CFNT AT 45S 62W
41S 61W 39S 64W MOV E ASOCIATED WITH OFNT AT 45S 62W 46S 64W 44S 65W
HIGH 1023HPA 36S 26W MOV E INTSF
LOW 1002HPA 49S 26W MOV E WKN EXTENDS CFNT AT 49S 26W 46S 32W 45S 38W
CFNT AT 60S 59W 54S 60W 50S 63W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-9-1
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 BACK SECTOR S MIST FOG PATCHES DISSIPATING
VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: NE 3 BACK SECTOR S VIS GOOD
URUGUAY SOUTH EAST COASTS: NE 3 BACK SECTOR S VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 3 BACK SECTOR S PROB OF ISOL
DRIZZLE RAIN TOWARDS EVENING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 WITH GUSTS TEMPO BACK
SECTOR W 4/3 PROB OF ISOL RAIN TOWARDS NIGTH IMPR VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 5/4 WITH GUSTS PROB OF ISOL
RAIN IMPR TOWARDS NIGTH VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5 WITH GUSTS BACK SECTOR W 5/6
WITH GUSTS VEER SECTOR N 4 PROB OF HVY RAIN IMPR TOWARDS NIGTH VIS MODERATE TO
GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4/6 WITH GUSTS DECR 5 PROB OF
DRIZZLE SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/6 WITH GUSTS MIST FOG PATCHES
DISSIPATING PROB OFISOL RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR N 6/5 WITH GUSTS BACK SECTOR W 5/6 WITH GUSTS PROB
OF ISOL RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 3/4 VEER SECTOR N 3 VIS
GOOD
REST OF THE AREA: SECTOR W 4/3 VEER SECTOR N 3/4 BACK SECTOR S 3 VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 6/4 WITH GUSTS PROB
OF ISOL SH RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
W OF 30W: SECTOR W 6/4 WITH GUSTS VEER SECTOR N 6 WITH GUSTS PROB OF ISOL SH
RAIN SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: SECTOR S 4/3 VEER SECTOR N 4/6 GUST WITH 8 INTENSITY BACK
SECTOR W 8 WITH GUSTS PROB OF RAIN RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR N 4/6 WITH GUSTS BACK
SECTOR W 6/5 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
REST OF THE AREA: SECTOR N 4/6 WITH GUSTS BACK SECTOR W 8/5 WITH GUSTS PROB OF
HVY SH RAIN AND SNOW MIXTURE VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 4/5 WITH GUSTS VEER SECTOR N
5/6 WITH GUSTS PROB OF ISOL RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR W 5 WITH GUSTS VEER
SECTOR N 5/6 WITH GUSTS PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS
MODERATE
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK SECTOR W WITH GUSTS PROB OF ISOL
SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 3 BACK SECTOR W 5/6 WITH GUSTS PROB
OF ISOL SH SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
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