1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 26, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1011/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MAR DE LA FLOTA COASTS MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 62S-67S 70W-60W FROM 26/1500 UNTIL 27/0300
1012/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 64S-72S 90W-70W FROM 26/1500 UNTIL 27/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 972HPA 63S 33W MOV E WKN
LOW 987HPA 70S 50W MOV E WKN
LOW 985HPA 68S 62W MOV E WKN
RIDGE 61S 55W 63S 52W 67S 50W MOV E INTSF
251400 UTC 1.SEA ICE LIMIT 5800S 02000W 5607S 02618W 5752S 03217W 5807S 03758W 5824S 04317W 5925S 04813W 6125S 05247W 6219S 05654W 6313S 06033W 6407S 06337W 6522S 06558W 6444S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6107S 05113W 21X12NM A81 6027S 05249W 28X25NM A76C 5232S 03113W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 6130S 05129W 6X3NM 4.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S 03800W 5830S 03800W B5830S 03800W 5300S 03800W 5800S 05000W 6040S 05000W C6040S 05000W 5800S 05000W 6300S 06716W 6620S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-27
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 6 WITH GUSTS INCR SW 7/8 WITH GUSTS BY 26/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 7 WITH GUSTS INCR SW 8 WITH GUSTS BY 26/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 6 WITH GUSTS INCR SW 7/8 WITH GUSTS BY 26/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 7 WITH GUSTS INCR SW 8 WITH GUSTS BY 26/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
GERLACHE STRAIT : SW 6/7 GUST WITH 8 INTENSITY VEER SECTOR E 4/3 BY 27/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
MARGARITA BAY : SECTOR N 4/5 VEER SECTOR E 4/3 BY 27/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS GOOD
EREBUS Y TERROR GULF : NE 4/5 BACK SW 7 GUST WITH 8 INTENSITY BY 26/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 4/5 WITH GUSTS INCR SW 6 WITH GUSTS BY 26/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 5/7 WITH GUSTS DECR SW 5/4 WITH GUSTS BY 26/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 7/5 WITH GUSTS INCR SECTOR W 8 WITH GUSTS BY 26/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA N OF 65S: SW 6/7 WITH GUSTS BACK SECTOR S 5 WITH GUSTS BY 26/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR GRADUALLY STARTING NOON VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR S 4/2 VEER NW 3/4 BY 26/0000 PROB OF MIST VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 4/3 BACK NE 4/5 BY 27/0000 PROB OF MIST VIS GOOD TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-26, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 345: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 40S-45S 40W-50W FROM 26/1500
WARNING 344: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 WITH GUST
BETWEEN 45S-55S 20W-40W FROM 26/0300
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 995HPA SOUTH PATAGONIA COASTS DPN EXP 46S 46W BY 26/1500
LOW 994HPA 50S 42W MOV SE DPN EXP 54S 26W BY 26/1500 EXTENDS CFNT AT 46S 39W 43S
40W 41S 42W MOV E
CFNT AT RINCON BAHIA BLANCA COASTS MOV NE
251400 UTC 1.SEA ICE LIMIT 5800S 02000W 5607S 02618W 5752S 03217W 5807S 03758W
5824S 04317W 5925S 04813W 6125S 05247W 6219S 05654W 6313S 06033W 6407S 06337W
6522S 06558W 6444S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6107S 05113W 21X12NM
A81 6027S 05249W 28X25NM A76C 5232S 03113W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 6130S 05129W 6X3NM 4.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S
03800W 5830S 03800W B5830S 03800W 5300S 03800W 5800S 05000W 6040S 05000W C6040S
05000W 5800S 05000W 6300S 06716W 6620S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-27
COASTAL AREAS:
INNER RIO DE LA PLATA: NW 3 BACK SE 3 BY 26/1500 PROB OF MIST FOG PATCHES
DISSIPATING DURING THE MORNING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: NW 3 BACK E 3 BY 26/1500 PROB OF MIST FOG PATCHES
DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: NE 4 BACK SECTOR S 3 BY 26/1500 PROB OF MIST FOG
PATCHES DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NW 4 BACK SECTOR S 4/3 BY 26/1200 PROB OF
MIST FOG PATCHES DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 5/4 WITH GUSTS BACK SW 4 BY
26/0600 UNSTABLE VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SW 5/6 WITH GUSTS PROB OF RAIN IMPR
STARTING EARLY MORNING VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 7/6 GUST WITH 8 INTENSITY DECR SECTOR
S 4 BY 26/1800 PROB OF SH VIS POOR TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 6 WITH GUSTS DECR 4 BY 26/1500
PROB OF SH RAIN AND SNOW MIXTURE VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SW 4 PROB OF SH OF SNOW STARTING NOON VIS
MODERATE
ISLAS MALVINAS COASTS: SECTOR S 6/5 WITH GUSTS PROB OF SH OF SNOW VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NE 5 PROB OF SH RAIN VIS MODERATE
TO POOR
W OF 30 - E OF 50W: SECTOR N 5/6 WITH GUSTS PROB OF SH VIS MODERATE OCNL POOR
REST OF THE AREA: NW 5 WITH GUSTS BACK SW 4 BY 26/1200 PROB OF MIST FOG PATCHES
PROB OF DRIZZLE IMPR STARTING NOON VIS POOR TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR N 6 WITH
GUSTS PROB OF ISOL RAIN VIS MODERATE
E OF 30 - S OF 45S: NW 7/8 WITH GUSTS PROB OF RAIN VIS POOR
W OF 30 - N OF 45S: NW 7 GUST WITH 8 INTENSITY PROB OF RAIN VIS POOR
REST OF THE AREA: NW 8 WITH GUSTS PROB OF SH RAIN VIS VERY POOR TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR N 5/6 WITH
GUSTS BACK SECTOR W 8 WITH GUSTS BY 26/1500 PROB OF RAIN VIS VERY POOR TO POOR
E OF 50 - S OF 45S: SECTOR W 7/6 GUST WITH 8 INTENSITY BACK SECTOR S 7 GUST
WITH 8 INTENSITY BY 26/1800 PROB OF RAIN VIS POOR
REST OF THE AREA: SW 6/7 GUST WITH 8 INTENSITY PROB OF SH RAIN VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: NW 7/8 WITH GUSTS PROB OF SH
OF SNOW RAIN VIS POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS PROB OF SH OF SNOW VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 4 BACK SECTOR S 4/5
BY 26/0900 PROB OF SH RAIN AND SNOW MIXTURE VIS MODERATE
REST OF THE AREA: SW 5/6 WITH GUSTS PROB OF SH OF SNOW VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5/6 WITH GUSTS PROB OF ISOL SNOW FALL VIS
MODERATE
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