1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-05-21, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 223: LOW 993HPA AT 41S 32W MOV SE DEEPENING EXPECTED BY 22/0000 PROVOKES
WINDS FORCE 8 FROM SECTOR W WITH GUST BETWEEN 40S-45S 30W-20W UNTIL 21/1500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 993HPA 41S 32W MOV SE DPN EXP BY 22/0000 EXTENDS CFNT AT 39S 32W 37S 33W 35S
35W MOV E
LOW 987HPA 48S 32W MOV SE DPN EXP BY 22/0000
HIGH 1031HPA 40S 62W MOV NE NC EXP 35S 57W BY 22/0000
CFNT AT 57S 54W 53S 55W 49S 58W MOV E
201400 UTC 1.SEA ICE LIMIT 6527S 02000W 6354S 02618W 6010S 03217W 6027S 03757W
6011S 04317W 6025S 04813W 6105S 05248W 6214S 05654W 6334S 06033W 6412S 06336W
6530S 06559W 6612S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5740S 03412W 16X7NM
3.ICEBERGS SMALLER THAN ICEBERG1 4910S 02547W 5X1NM 4.ICEBERGS AREA A6536S
02000W 4555S 02000W 4400S 03000W 6029S 03000W B6029S 03000W 4400S 03000W 5900S
04800W 6128S 04800W C6128S 04800W 5900S 04800W 6300S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-05-22
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 5/4 BACK SECTOR E BY 21/1800 LOW PROB OF DRIZZLE
IMPR DURING THE EARLY MORNING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR S 6/5 WITH GUSTS DECR VRB 4/3 BY 21/1200 LOW PROB
OF DRIZZLE IMPR DURING THE EARLY MORNING VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 6/5 WITH GUSTS DECR 4/3 BY 21/1200 LOW PROB
OF ISOL SH IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 6/5 WITH GUSTS DECR VRB 4/3 BY
21/1500 LOW PROB OF ISOL SH IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 4/3 INCR SECTOR N 5 BY 21/2100
LOW PROB OF ISOL SH IMPR DURING THE EARLY MORNING PROB OFCOASTAL FOG AND MIST IN
PATCHES STARTING EARLY MORNING TOWARDS MORNING VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): VRB 4 INCR SECTOR N 5/6 WITH GUSTS BY
21/1200 VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4 VEER SECTOR N 5/6 WITH GUSTS
BY 21/0900 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4 VEER SECTOR N 5/6 WITH GUSTS BY
21/0600 PROB OF COASTAL MIST STARTING EARLY MORNING DISSIPATING STARTING EARLY
MORNING VIS MODERATE TO GOOD
FIN DEL MUNDO COASTS(54S - 55S): NW 4 INCR 5 WITH GUSTS BY 21/2100 PROB OF FOG
AND MIST IN PATCHES DISSIPATING STARTING EARLY MORNING VIS MODERATE OCNL POOR TO
GOOD
ISLAS MALVINAS COASTS: SW 5/6 WITH GUSTS VEER W BY 21/0900 LOW PROB OF ISOL RAIN
IMPR TOWARDS EARLY MORNING VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 7 GUST WITH 8 INTENSITY BACK W
BY 21/0300 PROB OF RAIN ISOL SH VIS POOR OCNL VERY POOR
W OF 30 - E OF 40W: W 7 GUST WITH 8 INTENSITY BACK SW BY 21/0900 PROB OF RAIN
ISOL SH VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR S 7/6 GUST WITH 8 INTENSITY DECR 5 BY 21/2100 PROB OF
ISOL RAIN VIS POOR TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR W 8 WITH
GUSTS DECR 7 BY 21/1500 PROB OF RAIN VIS VERY POOR TO POOR
E OF 30 - S OF 45S: SECTOR N 5 WITH GUSTS BACK SECTOR S 6 WITH GUSTS BY 21/1500
PROB OF RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
W OF 30 - N OF 45S: SW 7 GUST WITH 8 INTENSITY PROB OF RAIN ISOL SH VIS POOR
OCNL VERY POOR
REST OF THE AREA: SW 7 GUST WITH 8 INTENSITY DECR 6 WITH GUSTS BY 21/2100 PROB
OF RAIN AND SNOW MIXTURE VIS POOR OCNL VERY POOR TO MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 7/6 GUST WITH 8
INTENSITY PROB OF RAIN AND SNOW MIXTURE NXT ISOL RAIN STARTING EVENING VIS POOR
OCNL VERY POOR TO MODERATE
REST OF THE AREA: SECTOR S 6 WITH GUSTS VEER SECTOR W BY 21/0600 PROB OF ISOL
RAIN IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 6 WITH GUSTS BACK
SECTOR S BY 21/0900 PROB OF RAIN SNOW FALL VIS POOR
REST OF THE AREA: SECTOR S 7/6 GUST WITH 8 INTENSITY DECR 5 BY 21/2100 PROB OF
SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR OCNL VERY POOR TO
MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR S 7/6 GUST
WITH 8 INTENSITY VEER SECTOR W BY 21/0900 PROB OF SNOW FALL NXT ISOL RAIN VIS
POOR OCNL VERY POOR TO MODERATE
E OF 50 - S OF 55S: SECTOR S 6 WITH GUSTS VEER SECTOR N 5 BY 21/1200 BACK
SECTOR W 6 WITH GUSTS BY 21/1800 PROB OF ISOL SNOW FALL NXT RAIN AND SNOW
MIXTURE VIS POOR OCNL MODERATE
REST OF THE AREA: SECTOR W 6 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6 WITH GUSTS LOW PROB OF ISOL RAIN
SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 21, MAY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
699/2026 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 68S-73S 90W-80W UNTIL 21/1200
700/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR S GUST WITH 9 INTENSITY IN 60S-68S 40W-30W UNTIL 21/0000
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 974HPA 69S 63W MOV E DPN EXTENDS CFNT AT 69S 63W 64S 57W 62S 55W MOV E
RIDGE 60S 47W 65S 45W 70S 40W MOV E WKN
201400 UTC 1.SEA ICE LIMIT 6527S 02000W 6354S 02618W 6010S 03217W 6027S 03757W 6011S 04317W 6025S 04813W 6105S 05248W 6214S 05654W 6334S 06033W 6412S 06336W 6530S 06559W 6612S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5740S 03412W 16X7NM 3.ICEBERGS SMALLER THAN ICEBERG1 4910S 02547W 5X1NM 4.ICEBERGS AREA A6536S 02000W 4555S 02000W 4400S 03000W 6029S 03000W B6029S 03000W 4400S 03000W 5900S 04800W 6128S 04800W C6128S 04800W 5900S 04800W 6300S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-05-22
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 4/5 BACK SECTOR W 5/4 BY 21/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 4/5 VEER NW 5/6 WITH GUSTS BY 21/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS W OF 60W: NW 4/5 BACK SECTOR W 5/4 BY 21/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 4/5 VEER NW 5/6 WITH GUSTS BY 21/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS MODERATE TO GOOD
GERLACHE STRAIT : NE 3/4 BACK NW 4/3 BY 21/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR E 5/7 GUST WITH 8 INTENSITY INCR SECTOR E 8 WITH GUSTS BY 20/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NW 4/5 BACK SW 4/5 BY 21/0900 PROB OF FOG AND MIST IN PATCHES WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: NW 5/4 BACK SECTOR W 5/4 BY 21/1200 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 7/8 WITH GUSTS BACK SECTOR W 6/5 WITH GUSTS BY 21/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 7/9 WITH GUSTS BACK NW 6/5 WITH GUSTS BY 21/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING EVENING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SW 7/5 WITH GUSTS VEER SECTOR W 4/3 BY 21/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 4/5 BACK SECTOR N 4/3 BY 21/1800 PROB OF ISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE=