1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 19, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1086/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST IN 62S-64S 59W-52W UNTIL 20/1500
1087/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST IN 61S-66S 45W-30W UNTIL 20/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 970HPA 60S 44W MOV SE DPN
LOW 974HPA 62S 55W MOV E WKN
LOW 973HPA 63S 62W MOV E WKN
HIGH 1001HPA 69S 36W MOV E WKN
RIDGE 60S 90W 65S 88W 70S 88W MOV E INTSF
181400 UTC 1.SEA ICE LIMIT 5547S 02000W 5416S 02618W 5352S 03217W 5617S 03757W 5825S 04316W 5953S 04814W 6047S 05247W 6215S 05654W 6338S 06032W 6135S 06337W 6213S 06558W 6233S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6007S 05131W 21X12NM A81 5853S 05059W 28X25NM A76C 5249S 03015W 16X6NM 3.ICEBERGS SMALLER THAN 10NM D33C 6150S 05425W 9X5NM ICEBERG1 6029S 05055W 5X3NM ICEBERG2 6015S 05357W 5X3NM ICEBERG3 6123S 05335W 6X4NM ICEBERG4 6128S 05403W 6X4NM 4.ICEBERGS AREA A5602S 02000W 4600S 02000W 5000S 03000W 5400S 03000W B5400S 03000W 5055S 03003W 5400S 04504W 6000S 04500W C6000S 04500W 5400S 04504W 6001S 05600W 6200S 05500W D6200S 05500W 6001S 05600W 6000S 06716W 6300S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-20
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 4/5 WITH GUSTS INCR SW 6/7 WITH GUSTS BY 20/0300 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 4/5 BACK SE 5/4 BY 19/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 5/6 VEER SECTOR W 5/4 WITH GUSTS BY 20/0300 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SE 7/8 WITH GUSTS VEER SECTOR S 8/7 BY 20/0300 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SE 3/4 BACK SECTOR E 3 BY 20/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
MARGARITA BAY : NE 4/3 BACK SECTOR N 4/3 BY 20/0000 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SECTOR S 7 WITH GUSTS VEER SW 8 WITH GUSTS BY 20/0300 PROB OF FOG AND MIST IN PATCHES BLIZZARD PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 6/7 WITH GUSTS VEER SECTOR W 7 GUST WITH 8 INTENSITY BY 20/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 6/7 VEER SECTOR W 5/4 BY 19/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 3/4 VEER SECTOR W 3/4 BY 19/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING NOON VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR E 6/7 GUST WITH 8 INTENSITY VEER SE 9 WITH GUSTS BY 20/0300 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR E 3/4 VEER SE 5 BY 19/2100 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS NOON VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 5/6 WITH GUSTS VEER SE 5/4 BY 19/1800 PROB OF MIST VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-19, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1023HPA 30S 56W MOV E NC EXP 36S 47W BY 20/1200
LOW 975HPA 59S 45W MOV E DPN EXP 59S 37W BY 20/1200 EXTENDS CFNT AT 59S 45W 49S
55W 40S 60W MOV E
181400 UTC 1.SEA ICE LIMIT 5547S 02000W 5416S 02618W 5352S 03217W 5617S 03757W
5825S 04316W 5953S 04814W 6047S 05247W 6215S 05654W 6338S 06032W 6135S 06337W
6213S 06558W 6233S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6007S 05131W 21X12NM
A81 5853S 05059W 28X25NM A76C 5249S 03015W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6150S 05425W 9X5NM ICEBERG1 6029S 05055W 5X3NM ICEBERG2 6015S 05357W 5X3NM
ICEBERG3 6123S 05335W 6X4NM ICEBERG4 6128S 05403W 6X4NM 4.ICEBERGS AREA A5602S
02000W 4600S 02000W 5000S 03000W 5400S 03000W B5400S 03000W 5055S 03003W 5400S
04504W 6000S 04500W C6000S 04500W 5400S 04504W 6001S 05600W 6200S 05500W D6200S
05500W 6001S 05600W 6000S 06716W 6300S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-20
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 FOG MIST DISSIPATING VIS GOOD
OUTER RIO DE LA PLATA: SECTOR E 3/4 FOG MIST DISSIPATING VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR E 3/4 FOG MIST DISSIPATING VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NW 4/5 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR E 4/5 VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR E 4/5 BACK SECTOR S 5/6 WITH
GUSTS BY 20/0900 VIS GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR E 4/5 BACK SECTOR S 5/6 WITH
GUSTS BY 20/0600 PROB OF RAIN VIS GOOD TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR E 6/7 WITH GUSTS BACK SW BY 20/0000
PROB OF ISOL RAIN VIS VERY POOR TO POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR E 6/7 WITH GUSTS PROB OF ISOL RAIN VIS
POOR OCNL VERY POOR
ISLAS MALVINAS COASTS: SECTOR E 4/5 BACK SECTOR S 5/6 WITH GUSTS BY 20/0600 PROB
OF RAIN VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W): SECTOR W 4/5 WITH GUSTS PROB OF ISOL RAIN
VIS GOOD TO MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR W 4/5 WITH GUSTS PROB
OF ISOL RAIN VIS GOOD TO MODERATE
REST OF THE AREA: SECTOR S 4/5 VEER NW 5/6 BY 19/2100 BACK SECTOR W BY 20/0600
PROB OF ISOL RAIN VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR W 5/6 WITH GUSTS VIS MODERATE
TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR N 6/7 BACK SECTOR W BY 20/0600
PROB OF ISOL RAIN VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR W 6/7 BACK SW BY 20/1200 PROB OF
ISOL RAIN VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/7 BACK SW BY 20/0000 PROB OF ISOL
SNOW FALL VIS POOR OCNL VERY POOR
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