1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-19, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 383: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS UNTIL 19/0300
WARNING 382: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 WITH GUST BETWEEN
35S-40S AND 30W-20W UNTIL 19/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
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
LOW 999HPA 45S 25W MOV SE DPN EXTENDS CFNT AT MOV E
RIDGE 38S 56W 43S 50W 46S 46W
CFNT AT 55S 53W 53S 57W 48S 60W MOV E
CFNT AT GOLFO DE SAN JORGE COASTS MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-20
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 4 BACK E LOW PROB OF ISOL RAIN MIST NEXT VIS MODERATE
OCNL GOOD
OUTER RIO DE LA PLATA: VRB 4 PROB OF ISOL RAIN MIST NEXT VIS MODERATE OCNL
GOOD
URUGUAY SOUTH EAST COASTS: SECTOR S 4 DECR VRB LOW PROB OF ISOL RAIN MIST NEXT
VIS MODERATE OCNL GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NW 4/5 WITH GUSTS PROB OF MIST STARTING
EARLY MORNING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 5/6 WITH GUSTS VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 5/4 VEER SECTOR N BY 19/2100
VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 6/5 WITH GUSTS DECR VRB 3/4 BY
19/0600 AFTERWARDS SECTOR W 5 BY 19/2300 PROB OF SH TOWARDS THE END OF THE
PERIOD VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) S OF - N OF 51S: SECTOR W 6/5 WITH GUSTS
DECR VRB BY 19/1200 AFTERWARDS SECTOR W 5 BY 19/2100 LOW PROB OF RAIN AND SNOW
MIXTURE TOWARDS THE END OF THE PERIOD VIS GOOD MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR W 8/7 WITH GUSTS
BACK SECTOR S BY 19/2300 PROB OF RAIN AND SNOW MIXTURE STARTING EVENING VIS VERY
POOR TO POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 8/7 GUST WITH 8 INTENSITY PROB OF
RAIN AND SNOW MIXTURE STARTING EVENING VIS VERY POOR POOR
ISLAS MALVINAS COASTS: SECTOR W 7/6 GUST WITH 8 INTENSITY PROB OF ISOL RAIN RAIN
AND SNOW MIXTURE VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) W OF - E OF 30W: NW 8 WITH GUSTS BACK SW 6
WITH GUSTS BY 19/0600 PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS VERY POOR
POOR
W OF 30 - E OF 40W: W 6 WITH GUSTS BACK SW BY 19/0600 PROB OF ISOL RAIN IMPR
TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL GOOD
REST OF THE AREA: SECTOR S 5 WITH GUSTS VEER SECTOR W 6 WITH GUSTS BY 19/0600
VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR N 7 GUST
WITH 8 INTENSITY BACK SECTOR W 6 WITH GUSTS BY 19/0300 BACK SECTOR S BY 19/1800
PROB OF RAIN IMPR TOWARDS THE END OF THE PERIOD VIS POOR MODERATE
W OF 30 - N OF 45S: SECTOR W 6 WITH GUSTS PROB OF ISOL RAIN SPELLS OF GOOD
WEATHER VIS MODERATE
REST OF THE AREA: SECTOR S 6 WITH GUSTS VEER NE BY 19/1200 PROB OF ISOL RAIN
STARTING EARLY MORNING VIS GOOD MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR W 6 WITH GUSTS LOW PROB OF
ISOL RAIN VIS MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 57S: SECTOR W 6 WITH GUSTS PROB OF
RAIN AND SNOW MIXTURE VIS POOR
REST OF THE AREA: VRB 4 INCR SECTOR E 6 WITH GUSTS BY 19/0600 PROB OF SNOW FALL
VIS POOR OCNL VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: NW 6/7 GUST WITH 8 INTENSITY
BACK W BY 19/0300 PROB OF RAIN AND SNOW MIXTURE VIS POOR
REST OF THE AREA: NW 6 WITH GUSTS BACK W BY 19/0600 AFTERWARDS 7 GUST WITH 8
INTENSITY BY 19/1200 PROB OF SNOW FALL VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/6 GUST WITH 8 INTENSITY BACK
SECTOR S BY 19/2100 PROB OF RAIN AND SNOW MIXTURE VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 19, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1083/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST IN 62S-64S 65W-54W UNTIL 19/2100
1084/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST IN 64S-66S 68W-64W UNTIL 19/0300
1085/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E WITH GUST IN 61S-66S 45W-30W FROM 19/0900 UNTIL 20/1800
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 966HPA 62S 63W MOV SE DPN
LOW 972HPA 67S 68W MOV E WKN
LOW 973HPA 62S 75W MOV E WKN
HIGH 1001HPA 69S 40W MOV E WKN
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 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-20
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 4/5 WITH GUSTS BACK SW 6 WITH GUSTS BY 19/0900 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
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 6 WITH GUSTS BACK SW 5/4 BY 19/0900 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
MAR DE LA FLOTA COASTS W OF 60W: SW 3/4 INCR SW 5/6 WITH GUSTS BY 19/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 7/8 WITH GUSTS VEER SE 6 WITH GUSTS BY 19/1200 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 : SECTOR E 7 GUST WITH 8 INTENSITY VEER SE 5/3 BY 19/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE
MARGARITA BAY : NE 5/4 BACK SECTOR N 4/3 BY 19/1500 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SECTOR S 4/6 WITH GUSTS VEER SW 7 GUST WITH 8 INTENSITY BY 19/0900 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 19/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 3/4 INCR SW 5/6 BY 19/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/4 VEER SW 3/4 BY 19/1200 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 WITH GUSTS INCR SECTOR E 8 WITH GUSTS BY 19/1200 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: SE 5/6 WITH GUSTS BACK SECTOR E 7 GUST WITH 8 INTENSITY BY 19/1200 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS NOON VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 5/6 WITH GUSTS VEER SE 5/4 BY 19/1200 PROB OF MIST VIS MODERATE TO GOOD=