1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 28, FEBRUARY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
250/2026 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV SW WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST IN 70S-72S 90W-80W UNTIL 01/0000
251/2026 STRONG BARIC GRADIENT MARGARITA BAY GERLACHE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM NE WITH GUST IN 64S-70S 70W-65W UNTIL 01/0000
252/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV S DEEPENING WILL PROVOKE WINDS FORCE 8 FROM NE IN 60S-65S 60W-50W FROM 01/0300 UNTIL 01/1200
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 968HPA 68S 90W MOV E DPN
LOW 975HPA 63S 82W MOV E NC
RIDGE 61S 48W 63S 51W 65S 54W MOV E WKN
TROUGH 68S 49W 68S 41W 68S 33W MOV E DPN
271400 UTC 1.SEA ICE LIMIT 7248S 02000W 7208S 02801W 6802S 03036W 6109S 03153W 7447S 03246W 7605S 03429W 7246S 03550W 6115S 03936W 6100S 04748W 6255S 05618W 6411S 06321W 6628S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 4711S 03150W 10X11NM A23K 5122S 03708W 11X8NM A76C 5929S 03804W 16X7NM B15AB 5338S 03403W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5007S 02316W 3X1NM ICEBERG2 5801S 03534W 5X2NM ICEBERG3 5153S 04021W 2X1NM ICEBERG4 5912S 04938W 5X4NM ICEBERG5 5135S 03742W 2X1NM ICEBERG6 5102S 04005W 4X2NM ICEBERG7 5109S 04003W 3X1NM ICEBERG8 5759S 03531W 5X2NM 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 2026-3-1
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 6/5 WITH GUSTS DECR NE 4 BY 28/2100 AFTERWARDS SECTOR W 4 PROB OF MIST FOG PATCHES PROB OFISOL RAIN IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR OCNL MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 4 INCR NE 8 WITH GUSTS BY 1/0300 AFTERWARDS NW 7 WITH GUSTS BY 1/1200 PROB OF MIST FOG PATCHES PROB OFMOD RAIN WORSENING STARTING NOON VIS VERY POOR TO POOR OCNL MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR N 6/5 DECR NE 4 BY 1/0000 AFTERWARDS SECTOR W 5 BY 1/0900 PROB OF MIST FOG PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR OCNL MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 4/3 INCR NE 5 BY 28/2100 AFTERWARDS NE 8 WITH GUSTS BY 1/0600 PROB OF MIST FOG PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE WORSENING STARTING THE MIDDLE OF THE PERIOD VIS VERY POOR TO POOR
GERLACHE STRAIT : NE 8 WITH GUSTS DECR NE 6/5 BY 28/1800 AFTERWARDS SECTOR N 4 BY 1/0600 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR STARTING EARLY MORNING VIS POOR TO MODERATE
MARGARITA BAY : NE 8 WITH GUSTS DECR NE 6 WITH GUSTS BY 1/0300 AFTERWARDS SECTOR E 4 BY 1/0900 PROB OF COASTAL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE
EREBUS Y TERROR GULF : SECTOR S 3 INCR NE 4 BY 1/0000 AFTERWARDS NE 7 WITH GUSTS BY 1/1200 PROB OF MIST FOG PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING STARTING EARLY MORNING VIS VERY POOR TO POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR N 4 BACK NW 4/5 BY 1/0000 AFTERWARDS SECTOR W 5 BY 1/0900 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER DURING THE END OF THE PERIOD VIS MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 4/5 INCR NE 6 WITH GUSTS BY 1/0000 AFTERWARDS SECTOR N 4 BY 1/1200 PROB OF MIST PROB OFISOL RAIN WORSENING STARTING EARLY MORNING VIS MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 8 WITH GUSTS DECR NE 6 WITH GUSTS BY 1/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE
NORTHERN WEDDELL SEA W OF 40W: SECTOR W 4/5 DECR SECTOR W 3 BY 1/0000 AFTERWARDS NE 5 BY 1/1200 PROB OF MIST FOG PATCHES PROB OFINTERMITTENT RAIN WORSENING TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 4 INCR SECTOR W 5 BY 28/2100 AFTERWARDS SECTOR W 4 BY 1/1200 PROB OF ISOL RAIN IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 5 INCR SECTOR S 6 WITH GUSTS BY 28/2100 AFTERWARDS SECTOR S 5 BY 1/0600 PROB OF ISOL SNOW FALL IMPR STARTING THE MIDDLE OF THE PERIOD VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-02-28, 00:00 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 21:00UTC
SEA ICE AND ICEBERGS REPORT 271400 UTC
1.SEA ICE LIMIT
72-48S 020-00W 72-08S 028-01W 68-02S 030-36W 61-09S 031-53W 74-47S 032-46W
76-05S 034-29W
72-46S 035-50W 61-15S 039-36W 61-00S 047-48W 62-55S 056-18W 64-11S 063-21W
66-28S 067-16W
2.ICEBERGS GREATER THAN 10NM
A23A 47-11S 031-50W 10X11NM
A23K 51-22S 037-08W 11X8NM
A76C 59-29S 038-04W 16X7NM
B15AB 53-38S 034-03W 10X4NM
3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 50-07S 023-16W 3X1NM
ICEBERG2 58-01S 035-34W 5X2NM
ICEBERG3 51-53S 040-21W 2X1NM
ICEBERG4 59-12S 049-38W 5X4NM
ICEBERG5 51-35S 037-42W 2X1NM
ICEBERG6 51-02S 040-05W 4X2NM
ICEBERG7 51-09S 040-03W 3X1NM
ICEBERG8 57-59S 035-31W 5X2NM
4.ICEBERGS AREA
A- 65-00S 020-00W 41-30S 020-00W 46-00S 032-00W 61-41S 035-00W
B- 61-41S 035-00W 46-00S 032-00W 52-30S 046-00W 62-00S 046-00W
C- 62-00S 046-00W 57-00S 046-00W 60-00S 067-16W 66-45S 067-16W
HIGH 1015HPA 37S 51W MOV SE INTSF EXP 40S 46W BY 28/2100
LOW 991HPA 56S 39W MOV SE DPN EXP 59S 27W BY 28/1200 EXTENDS CFNT AT 50S 29W 47S
41W 43S 36W MOV E
LOW 987HPA SOUTH PATAGONIA COASTS MOV SE DPN EXP 57S 59W BY 28/2100
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-3-1
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4 VIS GOOD
OUTER RIO DE LA PLATA: NE 4 VIS GOOD
URUGUAY SOUTH EAST COASTS: NE 3/4 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NE 4/5 PROB OF ISOL STORMS DURING THE
EVENING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6/5 WITH GUSTS PROB OF
STORMS STARTING EARLY MORNING SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS PROB OF ISOL
STORMS STARTING EARLY MORNING SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5 WITH GUSTS BACK NW 5/4 PROB
OF SH STARTING EARLY MORNING NEXT IMPR STARTING NOON VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 5/4 WITH GUSTS BACK SW 4 BY
28/2100 PROB OF SH SPELLS OF GOOD WEATHER VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): NE 4/3 VEER SW 4/5 BY 28/1500 PROB OF RAIN
SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
ISLAS MALVINAS COASTS: NW 4/5 PROB OF SH RAIN VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 5/4 WITH GUSTS PROB OF
ISOL RAIN STARTING EARLY MORNING VIS MODERATE
W OF 30 - E OF 35W: SECTOR N 7/6 GUST WITH 8 INTENSITY PROB OF ISOL HVY RAIN
STORMS VIS VERY POOR
W OF 35 - E OF 45W: SECTOR S 6/5 WITH GUSTS PROB OF RAIN IMPR STARTING EVENING
VIS POOR TO MODERATE
REST OF THE AREA: VRB 3 VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 7/6 GUST WITH 8
INTENSITY BACK SECTOR W 5 WITH GUSTS BY 28/1800 PROB OF RAIN VIS POOR
W OF 30 - N OF 45S: SECTOR N 7 GUST WITH 8 INTENSITY BACK SECTOR S 4/5 BY
28/0600 PROB OF ISOL HVY RAIN STORMS IMPR STARTING EVENING VIS VERY POOR TO
MODERATE
REST OF THE AREA: SW 5/6 WITH GUSTS PROB OF SH IMPR STARTING EARLY MORNING VIS
MODERATE TO GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SW 4 DECR VRB 3 BY
28/0600 VIS GOOD
E OF 50 - S OF 45S: SW 5 WITH GUSTS VEER SECTOR N 5 WITH GUSTS BY 28/1500 VIS
GOOD OCNL MODERATE
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS PROB OF ISOL SH STORMS STARTING
EVENING VIS GOOD TO MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR N 6 WITH GUSTS BACK
SECTOR W 5/6 WITH GUSTS BY 28/1800 PROB OF SH RAIN VIS VERY POOR
REST OF THE AREA: SECTOR N 4 BACK SE 6 WITH GUSTS PROB OF SH IMPR TOWARDS THE
END OF THE PERIOD VIS POOR TO MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SW 5/6 WITH GUSTS VEER SECTOR
N 4/5 WITH GUSTS BY 28/1800 PROB OF SH IMPR TOWARDS EARLY MORNING VIS MODERATE
TO GOOD
REST OF THE AREA: VRB 3 INCR SECTOR N 5/6 WITH GUSTS BY 28/0900 PROB OF SH RAIN
STARTING EARLY MORNING VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 5 WITH GUSTS BACK SECTOR W 4 BY
28/1500 PROB OF SH IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO GOOD
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