1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-30, 00:00 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 WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST
IN DRAKE AREA (55S- 60S AND 60W- 67W) BETWEEN 55S-60S 50W-60W FROM 30/1800
WARNING 351: STRONG BARIC GRADIENT MOV SE WILL PROVOKE WINDS FORCE 8 FROM NW
WITH GUST BETWEEN 35S-40S 20W-30W FROM 30/1500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1020HPA 35S 57W MOV E INTSF EXP 37S 47W BY 31/0000
CFNT AT 40S 21W 39S 27W 39S 34W MOV NE
CFNT AT 49S 35W 47S 40W 47S 45W MOV NE
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-31
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR E 4/5 WITH GUSTS PROB OF FOG AND MIST IN PATCHES
STARTING EARLY MORNING DISSIPATING STARTING EARLY MORNING VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SE 3 BACK E 4 BY 30/1200 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): VRB 3 VEER NE 4/5 WITH GUSTS PROB OF MIST
FOG PATCHES DURING THE EARLY MORNING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 3 WITH GUSTS BACK NE 5/6 WITH
GUSTS BY 30/1200 PROB OF ISOL RAIN VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SW 4/3 BACK NE 6/7 GUST WITH 8
INTENSITY BY 30/1200 PROB OF RAIN STARTING EARLY MORNING VIS MODERATE TO POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 3 BACK NE 6/7 GUST WITH 8
INTENSITY BY 30/1500 PROB OF RAIN STARTING EVENING VIS MODERATE TO POOR
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: SECTOR W 4 WITH GUSTS VEER NE 4
WITH GUSTS BY 30/1800 PROB OF SH SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR W 4 DECR VRB 3 BY
30/2100 PROB OF SH RAIN AND SNOW MIXTURE VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SW 6/5 WITH GUSTS PROB OF SH RAIN AND SNOW
MIXTURE VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 5 WITH GUSTS PROB OF SH RAIN AND SNOW MIXTURE
VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 7/8 WITH GUSTS BACK SECTOR S 7
GUST WITH 8 INTENSITY BY 30/1800 PROB OF HVY RAIN VIS VERY POOR
W OF 30 - E OF 50W: SECTOR S 5 WITH GUSTS PROB OF SH VIS MODERATE
REST OF THE AREA: SW 5 WITH GUSTS BACK NE 4 BY 30/2100 VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR S 4 INCR
6/7 GUST WITH 8 INTENSITY BY 30/1500 PROB OF SH SPELLS OF GOOD WEATHER VIS
MODERATE TO POOR
E OF 30 - S OF 45S: SE 4/5 WITH GUSTS PROB OF SH VIS MODERATE
W OF 30 - N OF 45S: SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF SH RAIN AND SNOW
MIXTURE VIS MODERATE TO POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS PROB OF SH OF SNOW VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR S 4 PROB OF SH VIS
MODERATE
REST OF THE AREA: SW 4 VEER SECTOR W 5 WITH GUSTS BY 30/1200 PROB OF SH RAIN
AND SNOW MIXTURE VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 7/6 GUST WITH 8 INTENSITY
PROB OF SNOW FALL VIS POOR
REST OF THE AREA: SW 6 WITH GUSTS VEER SECTOR N 6/7 GUST WITH 8 INTENSITY BY
30/1500 PROB OF SNOW FALL VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR W 6/7 GUST WITH 8
INTENSITY PROB OF SNOW FALL VIS POOR
W OF 50 - N OF 55S: SECTOR W 6 WITH GUSTS PROB OF SH OF SNOW VIS MODERATE TO
POOR
REST OF THE AREA: SW 7/8 WITH GUSTS PROB OF SNOW FALL VIS VERY POOR TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 6 WITH GUSTS INCR 8 WITH GUSTS BY 30/1800
PROB OF SH OF SNOW VIS MODERATE TO POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 30, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1017/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH GUST IN 60S-65S 50W-30W FROM 30/0600 UNTIL 30/2300
1018/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 64S-68S 80W-70W FROM 30/0600 UNTIL 30/1200
1019/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS GERLACHE STRAIT MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 62S-68S 70W-64W FROM 30/0900 UNTIL 30/2100
1020/2026 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
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 986HPA 64S 55W MOV E DPN
HIGH 999HPA 66S 44W MOV E WKN
LOW 991HPA 73S 50W MOV E WKN
RIDGE 62S 90W 63S 80W 64S 70W 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 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-31
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 4/5 INCR SW 7/8 WITH GUSTS BY 30/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 4/5 BACK SW 7/8 BY 30/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 4/5 INCR SW 7/8 WITH GUSTS BY 30/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 4/5 BACK SW 7/8 BY 30/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS POOR TO MODERATE
GERLACHE STRAIT : SW 4/5 BACK SECTOR S 4 BY 30/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : NW 4/5 VEER NE 4/3 BY 30/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SE 4/5 WITH GUSTS VEER SW 7/8 WITH GUSTS BY 30/1500 PROB OF FOG AND MIST IN PATCHES BLIZZARD PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 4/5 WITH GUSTS INCR SW 6 WITH GUSTS BY 30/1200 PROB OF MIST PROB OFSCT SH OF SNOW SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 5/5 WITH GUSTS INCR SW 6/8 WITH GUSTS BY 30/0900 PROB OF MIST PROB OFSCT SH OF SNOW WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 5/6 WITH GUSTS VEER SECTOR W 4/3 BY 30/1500 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 65S: NE 3/4 BACK SECTOR N 6/8 BY 30/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NOON VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NE 3/4 VEER SECTOR E 4/3 BY 30/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 4/5 WITH GUSTS VEER SE 4 BY 30/1500 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS MODERATE TO GOOD=