1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-02-27, 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
LOW 993HPA 52S 43W MOV SE DPN EXP 60S 30W BY 28/1200 EXTENDS CFNT AT 53S 44W 55S
37W 48S 35W 42S 40W MOV E
HIGH 1014HPA 37S 54W MOV E NC EXP 37S 47W BY 28/1200
LOW 999HPA 50S 63W MOV SE WKN EXP 56S 55W BY 28/1200 EXTENDS CFNT AT 50S 63W 47S
64W 45S 66W
261400 UTC 1.SEA ICE LIMIT 7621S 02831W 7127S 03011W 6612S 03235W 6920S 03316W
6131S 03349W 6041S 03941W 6144S 04543W 6054S 04932W 6233S 05436W 6335S 06035W
6405S 06324W 6615S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 4711S 03150W 10X11NM
A23K 5122S 03708W 11X8NM A76C 5928S 03803W 16X7NM B15AB 5338S 03403W 10X4NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5007S 02316W 3X1NM ICEBERG2 5753S 03523W
5X2NM ICEBERG3 4955S 03549W 4X2NM ICEBERG4 5153S 04021W 2X1NM ICEBERG5 5919S
04944W 5X4NM ICEBERG6 5135S 03742W 2X1NM ICEBERG7 5102S 04005W 4X2NM ICEBERG8
5109S 04003W 3X1NM 4.ICEBERGS AREA A 6500S 02000W 4130S 02000W 4600S 03200W
6141S 03500W B 6141S 03500W 4600S 03200W 5230S 04600W 6200S 04600W C 6200S
04600W 5700S 04600W 6000S 06716W 6645S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-02-28
COASTAL AREAS:
INNER RIO DE LA PLATA: NE 3/4 VIS GOOD
OUTER RIO DE LA PLATA: NE 3/4 VIS GOOD
URUGUAY SOUTH EAST COASTS: NE 3/4 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4/5 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/6 WITH GUSTS PROB OF ISOL
RAIN STARTING EARLY MORNING VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/5 WITH GUSTS BACK SECTOR W
BY 28/0900 PROB OF ISOL RAIN STARTING EARLY MORNING VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 4/5 WITH GUSTS BACK SECTOR W BY
28/0900 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 4 BACK SECTOR S 4 BY 28/0900 PROB
OF SH RAIN STARTING EARLY MORNING VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 4 BACK SECTOR S 4 BY 28/0900 PROB OF
SH RAIN STARTING EARLY MORNING VIS GOOD OCNL MODERATE.
ISLAS MALVINAS COASTS: SECTOR N 5 VIS GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR N 6 WITH GUSTS BACK SECTOR S
WITH GUSTS BY 28/1200 ISOL RAIN STORMS VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR S 4 BACK VRB 3 BY 28/0000 PROB OF MIST STARTING NIGTH
VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 5/6 WITH GUSTS BACK
SECTOR W 4 BY 28/0900 PROB OF RAIN STORMS VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR W 5 WITH GUSTS PROB OF ISOL RAIN STORMS STARTING NIGTH
IMPR VIS MODERATE TO GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SW 5 WITH GUSTS VIS GOOD
REST OF THE AREA: SECTOR N 4/5 WITH GUSTS VIS GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR N 5 WITH GUSTS BACK
SECTOR W 5 WITH GUSTS BY 28/0000 PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS
MODERATE OCNL GOOD
REST OF THE AREA: SECTOR E 5 WITH GUSTS VEER SW 5 WITH GUSTS BY 28/0600 PROB OF
SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SW 5 WITH GUSTS PROB OF SH
RAIN STARTING NIGTH IMPR VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR N 5 WITH GUSTS VIS GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 5 WITH GUSTS PROB OF ISOL
PRECIPITATIONS STARTING EARLY MORNING VIS GOOD TO MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 27, FEBRUARY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
245/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV SE DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST IN 60S-66S 60W-50W FROM 27/0300 UNTIL 27/1800
246/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV S DEEPENING WILL PROVOKE WINDS FORCE 8 FROM NE WITH GUST IN 64S-68S 76W-69W FROM 27/1400 UNTIL 27/2100
247/2026 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV SE WEAKENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E WITH GUST IN 68S-72S 90W-69W FROM 27/2100 UNTIL 28/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 982HPA 66S 54W MOV SE WKN
RIDGE 74S 60W 69S 62W 66S 62W
261400 UTC 1.SEA ICE LIMIT 7621S 02831W 7127S 03011W 6612S 03235W 6920S 03316W 6131S 03349W 6041S 03941W 6144S 04543W 6054S 04932W 6233S 05436W 6335S 06035W 6405S 06324W 6615S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 4711S 03150W 10X11NM A23K 5122S 03708W 11X8NM A76C 5928S 03803W 16X7NM B15AB 5338S 03403W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5007S 02316W 3X1NM ICEBERG2 5753S 03523W 5X2NM ICEBERG3 4955S 03549W 4X2NM ICEBERG4 5153S 04021W 2X1NM ICEBERG5 5919S 04944W 5X4NM ICEBERG6 5135S 03742W 2X1NM ICEBERG7 5102S 04005W 4X2NM ICEBERG8 5109S 04003W 3X1NM 4.ICEBERGS AREA A 6500S 02000W 4130S 02000W 4600S 03200W 6141S 03500W B 6141S 03500W 4600S 03200W 5230S 04600W 6200S 04600W C 6200S 04600W 5700S 04600W 6000S 06716W 6645S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-02-28
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: VRB 3 INCR SECTOR N 4/5 BY 27/2100 PROB OF MIST PROB OFINTERMITTENT RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 5/6 DECR VRB 3 BY 27/1500 PROB OF MIST PROB OFISOL RAIN IMPR STARTING EVENING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: VRB 3 INCR SECTOR N 4/5 BY 27/2100 PROB OF MIST PROB OFINTERMITTENT RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 6/7 DECR VRB 3 BY 27/2100 PROB OF MIST PROB OFISOL RAIN IMPR DURING THE MORNING VIS MODERATE TO GOOD
GERLACHE STRAIT : SECTOR N 3/4 INCR NE 6 BY 27/1500 AFTERWARDS NE 7 BY 28/0600 PROB OF INTERMITTENT RAIN AND SNOW MIXTURE WORSENING DURING THE EVENING VIS GOOD TO MODERATE
MARGARITA BAY : VRB 3 INCR NE 4 BY 27/1800 PROB OF MIST PROB OFCOASTAL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE
EREBUS Y TERROR GULF W OF 53W: SW 4/6 DECR SW 3 BY 27/2100 PROB OF ISOL RAIN AND SNOW MIXTURE IMPR STARTING NOON VIS MODERATE
EREBUS Y TERROR GULF REST OF THE AREA: NW 4/6 DECR SECTOR W 3 BY 28/0300 PROB OF INTERMITTENT RAIN IMPR DURING THE EVENING VIS MODERATE TO GOOD OCNL POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA E OF 80W: NW 4/6 INCR NE 7/8 BY 27/1400 AFTERWARDS SECTOR N 4 BY 27/2100 PROB OF ISOL RAIN IMPR GRADUALLY DURING THE EVENING VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: VRB 3 INCR SECTOR W 5 BY 27/2100 PROB OF SCT SH SPELLS OF GOOD WEATHER DURING THE NIGTH VIS MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 6 WITH GUSTS INCR SECTOR E 7/8 BY 27/2100 PROB OF ISOL RAIN SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
NORTHERN WEDDELL SEA N OF 64S: VRB 3 PROB OF MIST PROB OFSCT SH IMPR DURING THE MORNING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 6/7 WITH GUSTS DECR SW 3/4 BY 28/0000 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR DURING THE EVENING VIS MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 3/4 INCR SECTOR E 6/7 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EVENING VIS MODERATE TO POOR=