1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-30, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 352: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SW WITH
GUST IN DRAKE AREA (55S- 60S AND 60W- 67W) BETWEEN 55S-60S AND 30W-60W FROM
30/1800
WARNING 351: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR
W WITH GUST BETWEEN 35S-40S AND 20W-30W FROM 30/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1020HPA 36S 53W MOV E INTSF EXP 35S 40W BY 31/1200
CFNT AT 59S 50W 58S 53W 57S 27W MOV E
LOW 993HPA 51S 24W MOV E WKN EXTENDS CFNT AT 51S 24W 47S 25W 45S 28W
291400 UTC 1.SEA ICE LIMIT 5755S 02000W 5553S 02618W 5742S 03217W 5752S 03757W
5825S 04317W 5950S 04814W 6123S 05248W 6201S 05654W 6323S 06032W 6404S 06337W
6525S 06559W 6330S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 61 02S 051 58W
21X12NM A81 60 23S 052 42W 28X25NM A76C 52 19S 031 20W 16X6NM 3.ICEBERGS SMALLER
THAN 10NM ICEBERG1 5934S 05053W 2X1NM 4.ICEBERGS AREA A5820S 02000W 4600S 02000W
5300S 03800W 5805S 03800W B5805S 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 2026-07-31
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 BACK SECTOR N 4/5 WITH GUSTS ISOL RAIN
STORMS TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR E 3/4 BACK SECTOR N 4/5 WITH GUSTS ISOL RAIN
STORMS TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 3/4 BACK SECTOR N 4/6 WITH GUSTS ISOL RAIN
STORMS TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 3/4 BACK SECTOR N 4/6 WITH GUSTS
MIST FOG PATCHES DISSIPATING PROB OF RAIN STORMS TOWARDS THE END OF THE PERIOD
VIS GOOD TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/6 WITH GUSTS MIST FOG
PATCHES DISSIPATING PROB OFISOL RAIN TOWARDS MORNING RAIN STORMS TOWARDS THE END
OF THE PERIOD VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/6 WITH GUSTS PROB OF ISOL
RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 3/4 WITH GUSTS VEER SECTOR N
4/6 WITH GUSTS AFTERWARDS SECTOR E 6/5 WITH GUSTS PROB OF RAIN STARTING EVENING
VIS GOOD TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4/5 VEER SECTOR E 3/5 WITH GUSTS
PROB OF ISOL RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE OCNL
GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 5 WITH GUSTS BACK SECTOR S 4/5 WITH
GUSTS PROB OF ISOL SNOW FALL TOWARDS EARLY MORNING IMPR VIS MODERATE OCNL GOOD
ISLAS MALVINAS COASTS: SECTOR W 4 VEER SECTOR S 4 PROB OF ISOL RAIN RAIN AND
SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 5/6 GUST WITH 8 INTENSITY
BACK SECTOR W 6/8 WITH GUSTS PROB OF HVY RAIN STORMS VIS MODERATE TO POOR
E OF 40W: SW 5/6 WITH GUSTS BACK S 5/3 WITH GUSTS PROB OF ISOL SH RAIN VIS
MODERATE
REST OF THE AREA: SW 5/4 WITH GUSTS VEER SECTOR N 4/6 WITH GUSTS PROB OF ISOL
SH RAIN TOWARDS EARLY MORNING IMPR VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR S 5/6 WITH GUSTS VEER SECTOR W
4/6 WITH GUSTS PROB OF ISOL SH RAIN RAIN AND SNOW MIXTURE VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SW 4 VEER SECTOR N 4/6 WITH GUSTS
PROB OF ISOL SH RAIN RAIN AND SNOW MIXTURE VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 6 WITH GUSTS VEER SECTOR N
5/6 WITH GUSTS PROB OF ISOL SNOW FALL VIS MODERATE OCNL POOR
N OF 55 - W OF 30W: SECTOR W 5/6 GUST WITH 8 INTENSITY PROB OF SNOW FALL VIS
MODERATE OCNL POOR
REST OF THE AREA: SECTOR E 5 WITH GUSTS VEER SECTOR N 6 WITH GUSTS BACK SECTOR
W 6/8 WITH GUSTS PROB OF SNOW FALL VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 6 WITH GUSTS PROB OF
ISOL SNOW FALL VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 6/8 WITH GUSTS BACK SECTOR S 6 WITH GUSTS PROB OF
ISOL SNOW FALL VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/8 WITH GUSTS BACK SECTOR S 6 WITH
GUSTS PROB OF ISOL SNOW FALL TOWARDS THE END OF THE PERIOD IMPR VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 30, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1024/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 62S-65S 59W-50W FROM 30/1500 UNTIL 31/1200
1021/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N WITH GUST IN 60S-65S 45W-30W UNTIL 31/0000
1022/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-68S 78W-70W UNTIL 30/1200
1023/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS GERLACHE STRAIT MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 62S-68S 70W-64W UNTIL 30/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 980HPA 63S 46W MOV E DPN
HIGH 997HPA 71S 38W MOV E WKN
LOW 994HPA 72S 45W MOV E WKN
RIDGE 62S 90W 63S 80W 64S 75W MOV E INTSF
291400 UTC 1.SEA ICE LIMIT 5755S 02000W 5553S 02618W 5742S 03217W 5752S 03757W 5825S 04317W 5950S 04814W 6123S 05248W 6201S 05654W 6323S 06032W 6404S 06337W 6525S 06559W 6330S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 61 02S 051 58W 21X12NM A81 60 23S 052 42W 28X25NM A76C 52 19S 031 20W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5934S 05053W 2X1NM 4.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S 03800W 5805S 03800W B5805S 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 2026-07-31
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 7/8 WITH GUSTS DECR SW 6/5 WITH GUSTS BY 31/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS MODERATE TO POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 7/8 WITH GUSTS BACK SE 7 BY 31/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 7/8 WITH GUSTS DECR SW 6/5 WITH GUSTS BY 31/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 7/8 WITH GUSTS BACK SE 7 BY 31/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
GERLACHE STRAIT : SECTOR S 4/3 VEER SW 5/7 WITH GUSTS BY 31/0300 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : NW 4/3 VEER NE 3 BY 31/0000 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 7/8 GUST WITH 9 INTENSITY BACK SECTOR S 5 BY 31/0300 PROB OF FOG AND MIST IN PATCHES BLIZZARD PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 5/6 WITH GUSTS DECR SW 4 WITH GUSTS BY 30/2100 PROB OF MIST PROB OFSCT SH OF SNOW WORSENING DURING THE EVENING VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 7/5 WITH GUSTS VEER SECTOR W 4 WITH GUSTS BY 31/0000 PROB OF MIST PROB OFSCT SH OF SNOW WORSENING TOWARDS NIGTH VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 5/4 VEER NW 4/3 BY 31/0500 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA N OF 65S: NE 7/8 WITH GUSTS BACK SECTOR W 5/4 BY 30/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR E 3/4 VEER SE 5/6 WITH GUSTS BY 31/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE NIGTH VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 4/5 WITH GUSTS VEER SE 4 BY 30/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS MODERATE TO GOOD=