1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-22, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 340: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) FROM 23/0000
WARNING 338: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH WEST AREA (50S- 60S AND 40W- 60W) DRAKE AREA (55S- 60S AND 60W-
67W) FROM 22/1500
WARNING 337: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 55S-60S AND 20W-30W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
221400 UTC 1.SEA ICE LIMIT 5759S 02000W 5605S 02618W 5803S 03217W 5835S 03758W
5937S 04316W 6142S 04814W 6210S 05247W 6229S 05655W 6338S 06032W 6413S 06336W
6530S 06559W 6602S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6118S 05113W 21X12NM
A81 6036S 05242W 28X25NM A76C 5204S 03142W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 6148S 05202W 6X3NM 4.ICEBERGS AREA A5830S 02000W 4550S 02000W 5100S
03300W 5840S 03300W B5840S 03300W 5100S 03300W 5800S 05000W 6200S 05000W C6200S
05000W 5800S 05000W 6300S 06716W 6615S 06716W
HIGH 1026HPA 39S 64W MOV E NC EXP 40S 50W BY 23/1200 EXTENDS RIDGE AT 38S 64W
45S 66W 48S 70W MOV E
LOW 1005HPA 34S 43W MOV E NC EXP 38S 30W BY 23/1200 EXTENDS CFNT AT 35S 43W 32S
43W 31S 47W MOV E
WFNT AT 35S 42W 36S 39W 37S 35W MOV E
LOW 966HPA 58S 30W MOV E DPN EXTENDS CFNT AT 59S 27W 53S 34W 51S 46W MOV E
STRONG BARIC GRADIENT BETWEEN IN 55S-60S 20-30W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-23
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 4/3 BACK SECTOR E 3 MIST DISSIPATING PROB OF MIST FOG
PATCHES STARTING EARLY MORNING PROB OF DRIZZLE VIS MODERATE OCNL POOR
OUTER RIO DE LA PLATA: SE 5/3 BACK SECTOR E 3 FOG AND MIST IN PATCHES
DISSIPATING PROB OF FOG AND MIST IN PATCHES STARTING EARLY MORNING PROB OF
DRIZZLE VIS MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR S 5/3 BACK SECTOR E 3 FOG AND MIST IN PATCHES
DISSIPATING PROB OF FOG AND MIST IN PATCHES STARTING EARLY MORNING PROB OF
DRIZZLE VIS MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 3 BACK SECTOR N FOG AND MIST IN
PATCHES DISSIPATING PROB OF FOG AND MIST IN PATCHES STARTING EARLY MORNING PROB
OF DRIZZLE VIS MODERATE OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 3 BACK SECTOR N 4/5 WITH GUSTS
FOG AND MIST IN PATCHES DISSIPATING PROB OF DRIZZLE IMPR VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): VRB 3 BACK SECTOR N 5/6 WITH GUSTS PROB
OF ISOL RAIN STARTING EVENING VIS GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4 VEER SECTOR N 4/5 PROB OF
RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 5 WITH GUSTS VEER NE 5/6 WITH
GUSTS PROB OF SNOW FALL VIS POOR
FIN DEL MUNDO COASTS(54S - 55S): SW 5/6 WITH GUSTS PROB OF SNOW FALL VIS
POOR
ISLAS MALVINAS COASTS: SW 5 WITH GUSTS PROB OF SNOW FALL IMPR TOWARDS THE END OF
THE PERIOD VIS POOR TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 7 WITH GUSTS BACK SECTOR S
6 WITH GUSTS PROB OF HVY RAIN STORMS VIS POOR
W OF 30W - E OF 40W: SECTOR S 7/5 WITH GUSTS PROB OF SH IMPR VIS POOR TO
MODERATE
W OF 40W - E OF 50W: SECTOR S 5/4 PROB OF SH IMPR VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR S 5/3 BACK SECTOR N 3 PROB OF SH IMPR VIS MODERATE TO
GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR N 5/6 WITH GUSTS PROB
OF SH IMPR VIS POOR TO MODERATE
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS
POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) NE OF THE REGION: SECTOR W 5 WITH
GUSTS PROB OF SH VIS MODERATE OCNL GOOD
NW OF THE REGION: SECTOR S 5/4 BACK SECTOR N 3/4 PROB OF SH IMPR VIS MODERATE
TO GOOD
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS PROB OF SNOW FALL VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) SE OF THE REGION: SECTOR W 8 WITH GUSTS
PROB OF SNOW FALL VIS POOR
REST OF THE AREA: SECTOR W 7/8 WITH GUSTS PROB OF SNOW FALL VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR W 7/8 WITH GUSTS DECR 7 PROB OF
SNOW FALL VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/8 WITH GUSTS DECR 7 WITH GUSTS
PROB OF SNOW FALL VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 22, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
991/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-72S 90W-70W UNTIL 22/1800
992/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 60S-64S 70W-60W UNTIL 23/0000
993/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-67S 70W-65W UNTIL 23/1200
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 1001HPA 70S 75W MOV E WKN
LOW 982HPA 62S 48W MOV E WKN
RIDGE 65S 90W 62S 80W 60S 75W MOV NE INTSF
211400 UTC 1.SEA ICE LIMIT 5753S 02000W 5712S 02618W 5848S 03217W 5925S 03757W 5954S 04317W 6044S 04814W 6151S 05247W 6234S 05655W 6342S 06032W 6413S 06337W 6532S 06559W 6616S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6119S 05117W 21X12NM A81 6042S 05250W 28X25NM A76C 5216S 03146W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 6151S 05210W 6X3NM 4.ICEBERGS AREA A6016S 02000W 4300S 02000W 5300S 04100W 6010S 04100W B6010S 04100W 5300S 04100W 6000S 05500W 6220S 05500W C6220S 05500W 6000S 05500W 6500S 06716W 6640S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-23
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 8 GUST WITH 9 INTENSITY DECR SW 5 WITH GUSTS BY 22/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 5/6 WITH GUSTS INCR SECTOR S 7 GUST WITH 8 INTENSITY BY 22/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 8 GUST WITH 9 INTENSITY DECR SW 5 WITH GUSTS BY 22/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 5/6 WITH GUSTS INCR SECTOR S 7 GUST WITH 8 INTENSITY BY 22/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : SW 3/4 INCR SW 7 GUST WITH 8 INTENSITY BY 22/2100 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
MARGARITA BAY : NE 3/4 VEER SECTOR E 4/3 BY 23/0000 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SW 5/7 WITH GUSTS VEER SECTOR W 5/7 WITH GUSTS BY 22/2100 AFTERWARDS SW 7/8 BY 23/0600 PROB OF COASTAL BLIZZARD VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 6/7 GUST WITH 8 INTENSITY DECR SW 6/5 WITH GUSTS BY 22/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 7/8 WITH GUSTS DECR SW 5 WITH GUSTS BY 22/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 7/8 WITH GUSTS VEER SECTOR W 8 WITH GUSTS BY 23/0000 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 65S: SW 5/7 WITH GUSTS BACK SECTOR S 5/6 WITH GUSTS BY 23/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 3/4 WITH GUSTS VEER SECTOR W 5/7 WITH GUSTS BY 23/0000 PROB OF FOG AND MIST IN PATCHES IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 INCR SE 7/8 WITH GUSTS BY 22/2300 PROB OF MIST PROB OFCOASTAL BLIZZARD WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR=