1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-29, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 395: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 9 WITH GUST BETWEEN
35S-40S AND 20W-35W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1016HPA 36S 55W MOV E NC EXP 36S 45W BY 30/1200
LOW 1005HPA 37S 37W MOV SE DPN EXP 44S 20W BY 30/0600 EXTENDS CFNT AT 35S 39W
31S 45W 30S 50W MOV E
LOW 1000HPA 49S 60W MOV E NC EXP 60S 20W BY 30/1200 EXTENDS CFNT AT 49S 60W 45S
58W 42S 61W MOV E
281400 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 5343S 02917W 17X6NM
A81 5851S 04914W 28X25NM D33B 5938S 05014W 21X12NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5911S 05041W 5X3NM ICEBERG2 6047S 05440W 5X3NM ICEBERG3 6044S 05242W
6X4NM ICEBERG4 6055S 05357W 2X1NM 4.ICEBERGS AREA A5614S 02000W 4800S 02000W
5300S 03600W 5620S 03600W B5620S 03600W 5300S 03600W 5400S 05000W 5945S 05000W
C5945S 05000W 5700S 05000W 6000S 06716W 6240S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-30
COASTAL AREAS:
INNER RIO DE LA PLATA: VRB 3 PROB OF ISOL MIST STARTING EARLY MORNING VIS GOOD
OCNL MODERATE
OUTER RIO DE LA PLATA: VRB 3 BACK NW 4 PROB OF MIST TOWARDS NOON DISSIPATING VIS
MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: VRB 3 BACK NW 4 PROB OF MIST TOWARDS NOON DISSIPATING
VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4/5 WITH GUSTS PROB OF SH RAIN
STARTING NIGTH VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 4 PROB OF ISOL RAIN STORMS
STARTING EVENING VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 4 BACK SECTOR E 4 PROB OF ISOL
RAIN STARTING NIGTH VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 4 BACK SECTOR N 4 BY 30/0000
VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SW 4 BACK SECTOR N 4/5 WITH GUSTS BY
30/0600 VIS GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 4/5 VIS GOOD
ISLAS MALVINAS COASTS: SECTOR S 5 WITH GUSTS BACK SECTOR N 5 BY 30/0600 VIS
GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: NW 9 WITH GUSTS HVY RAIN STORMS VIS
POOR
REST OF THE AREA: SECTOR S 4 BACK SECTOR N 4 VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: NW 6 WITH GUSTS BACK SECTOR
S 6 WITH GUSTS BY 30/0000 PROB OF SH RAIN IMPR DURING THE EARLY MORNING VIS POOR
TO MODERATE OCNL GOOD
REST OF THE AREA: SECTOR S 5 VEER SECTOR W 6 WITH GUSTS BY 30/0000 VIS GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR W 6 WITH GUSTS PROB OF ISOL
RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 6 WITH GUSTS PROB OF ISOL RAIN
AND SNOW MIXTURE VIS GOOD OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SW 5 WITH GUSTS PROB OF ISOL RAIN AND
SNOW MIXTURE IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5 WITH GUSTS VEER NW 5 WITH GUSTS BY
30/0000 PROB OF ISOL PRECIPITATIONS SPELLS OF GOOD WEATHER VIS GOOD OCNL
MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 29, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1110/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 65S-68S 45W-30W UNTIL 29/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 984HPA 61S 45W MOV E WKN
LOW 955HPA 72S 80W MOV E WKN
HIGH 995HPA 64S 55W MOV E WKN
HIGH 1000HPA 64S 77W MOV E INTSF
281400 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 5343S 02917W 17X6NM A81 5851S 04914W 28X25NM D33B 5938S 05014W 21X12NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5911S 05041W 5X3NM ICEBERG2 6047S 05440W 5X3NM ICEBERG3 6044S 05242W 6X4NM ICEBERG4 6055S 05357W 2X1NM 4.ICEBERGS AREA A5614S 02000W 4800S 02000W 5300S 03600W 5620S 03600W B5620S 03600W 5300S 03600W 5400S 05000W 5945S 05000W C5945S 05000W 5700S 05000W 6000S 06716W 6240S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-30
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 4 VEER SECTOR W 3/4 BY 29/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS GOOD TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 4/3 VEER SW 3/4 BY 30/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 4 VEER SECTOR W 3/4 BY 29/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 4/3 VEER SW 3/4 BY 30/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD
GERLACHE STRAIT : SECTOR S 3/4 VEER SW 4/3 BY 29/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
MARGARITA BAY : SECTOR E 4/3 BACK NE 4/3 BY 29/2100 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : NW 4/3 BACK SW 4/5 BY 29/2100 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 4/3 VEER SECTOR W 4/3 BY 29/1800 PROB OF FOG AND MIST IN PATCHES IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 3/4 VEER NW 4/3 BY 29/1800 PROB OF MIST IMPR DURING THE NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 3/4 BACK SW 4/3 BY 29/2100 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: NE 4/5 BACK SECTOR N 4/3 BY 29/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 7 GUST WITH 8 INTENSITY BACK SECTOR W 5 BY 30/0300 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NOON VIS GOOD TO MODERATE OCNL POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 WITH GUSTS INCR SE 5/6 BY 29/1800 PROB OF MIST PROB OFCOASTAL BLIZZARD WORSENING STARTING NOON VIS GOOD TO MODERATE=