1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-4, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 404: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 FROM SECTOR S
WITH GUST IN PENINSULA DE VALDES COASTS GOLFO DE SAN JORGE COASTS SOUTH
PATAGONIA COASTS FROM 04/1500
WARNING 403: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SECTOR S WITH
GUST IN FIN DEL MUNDO COASTS UNTIL 04/0900
WARNING 402: LOW 993HPA AT 41S 40W DEEPENING PROVOKES WINDS FORCE 8 WITH GUST
BETWEEN 35S-45S AND 30W-43W FROM 04/1500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
031400 UTC 1.SEA ICE LIMIT 5558S 02000W 5446S 02618W 5350S 03218W 5557S 03758W
5859S 04317W 6011S 04814W 6040S 05248W 6201S 05655W 6335S 06032W 6312S 06337W
6137S 06559W 6136S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5843S 04718W 28X25NM
D33B 5905S 05102W 21X12NM A76C 5315S 02719W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6151S 05409W 9X5NM ICEBERG1 5836S 04950W 5X3NM ICEBERG2 6037S 05225W 5X3NM
ICEBERG3 6015S 05151W 6X4NM ICEBERG4 5838S 05008W 2X1NM ICEBERG5 5845S 04910W
2X1NM ICEBERG6 6020S 05128W 2X1NM 4.ICEBERGS AREA A5616S 02000W 5000S 02000W
5000S 03200W 5200S 3900S 5707S 03900W B5707S 03900W 5300S 03900W 5302S 04800W
6033S 6716S 6146S 06716W
LOW 993HPA 41S 40W DPN EXP 48S 27W BY 04/1500 EXTENDS CFNT AT 40S 42W 34S 48W
30S 60W MOV NE
HIGH 1015HPA 33S 64W MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-5
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4/3 VIS GOOD
OUTER RIO DE LA PLATA: SW 4/3 UNSTABLE DURING THE EARLY MORNING IMPR VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR S 5/4 WITH GUSTS VEER SW 4 BY 4/0600 VEER
SECTOR W 3 BY 4/2100 PROB OF SH IMPR VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SW 6/5 WITH GUSTS VEER SECTOR W 5/4 BY
4/1500 PROB OF SH VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SW 5 WITH GUSTS VEER SECTOR W 5/6
WITH GUSTS BY 4/1200 PROB OF SH VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SW 5/6 WITH GUSTS INCR 7/8 WITH GUSTS
BY 4/1800 LOW PROB OF RAIN AND SNOW MIXTURE STARTING EVENING VIS MODERATE TO
POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 6/7 WITH GUSTS INCR SECTOR S 7/8 WITH
GUSTS BY 4/1500 PROB OF SH RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
SOUTH PATAGONIA COASTS(48S - 54S): SW 7 WITH GUSTS BACK SECTOR S 7/8 WITH
GUSTS BY 4/0900 DECR 7/6 WITH GUSTS BY 4/2200 PROB OF SH RAIN AND SNOW MIXTURE
VIS MODERATE TO POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 8/7 WITH GUSTS DECR 7/6 WITH GUSTS
BY 4/1200 DECR 6/5 WITH GUSTS BY 4/2100 PROB OF SH RAIN AND SNOW MIXTURE VIS
POOR TO MODERATE
ISLAS MALVINAS COASTS: VRB 4 INCR SECTOR S 7/6 WITH GUSTS BY 4/1200 PROB OF SH
OF SNOW VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 6/7 WITH GUSTS INCR 8 WITH GUSTS
BY 4/0900 PROB OF RAIN TOWARDS EVENING VIS POOR
E OF 43W: NW 8 GUST WITH 9 INTENSITY BACK SECTOR W 6/5 WITH GUSTS BY 4/1500
PROB OF RAIN VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR W 6/5 WITH GUSTS PROB OF SH RAIN VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR N 6/7 WITH
GUSTS INCR 8/9 WITH GUSTS BY 4/0600 PROB OF RAIN VIS VERY POOR TO POOR
W OF 30 - N OF 45S: NW 8 GUST WITH 9 INTENSITY BACK SW 5 WITH GUSTS BY 4/1200
DECR PROB OF RAIN NEXT SH VIS POOR TO MODERATE
E OF 30 - S OF 45S: SECTOR W 6/5 WITH GUSTS VEER SECTOR N 8/9 WITH GUSTS BY
4/0900 BACK SW 5 BY 4/2100 PROB OF RAIN VIS MODERATE TO VERY POOR
REST OF THE AREA: SECTOR S 6/7 WITH GUSTS VEER NW 5 WITH GUSTS BY 4/1800 PROB
OF SH RAIN NEXT SH RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR W 4/5 WITH GUSTS BACK
SECTOR S 6 WITH GUSTS BY 4/1800 PROB OF SH NEXT SH RAIN AND SNOW MIXTURE VIS
MODERATE OCNL POOR
REST OF THE AREA: SW 6/5 WITH GUSTS BACK SECTOR S WITH GUSTS BY 4/1800 PROB OF
SH RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30 - N OF 55S: SECTOR W 6 WITH
GUSTS BACK SECTOR S 6 WITH GUSTS PROB OF SH RAIN VIS MODERATE
W OF 30 - N OF 55S: NW 6 WITH GUSTS BACK SECTOR S 6/7 WITH GUSTS BY 4/1200 PROB
OF SH RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
REST OF THE AREA: SW 5 INCR 5/6 WITH GUSTS BY 4/1800 PROB OF SH RAIN AND SNOW
MIXTURE VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR S 5/6 WITH GUSTS SH OF SNOW VIS
MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 6/7 WITH GUSTS VEER SECTOR W 6/7
WITH GUSTS BY 04/2100 INCR PROB OF SH OF SNOW VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 04, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1126/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH GUST IN 63S-72S 38W-30W FROM 04/0300 UNTIL 05/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 9829HPA 60S 44W MOV E WKN
LOW 988HPA 62S 60W MOV E WKN
HIGH 1001HPA 66S 58W MOV NE WKN
HIGH 1015HPA 60S 78W MOV E INTSF EXTENDS RIDGE AT 60S 78W 65S 75W 70S 73W MOV E
021400 UTC 1.SEA ICE LIMIT 5558S 02000W 5446S 02618W 5350S 03218W 5557S 03758W 5859S 04317W 6011S 04814W 6040S 05248W 6201S 05655W 6335S 06032W 6312S 06337W 6137S 06559W 6136S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5314S 02748W 17X6NM A81 5850S 04713W 28X25NM D33B 5907S 05051W 21X12NM 3.ICEBERGS SMALLER THAN 10NM D33C 6155S 05403W 9X5NM ICEBERG1 5832S 05012W 5X3NM ICEBERG2 6045S 05241W 5X3NM ICEBERG3 6016S 05206W 6X4NM ICEBERG4 5835S 05025W 2X1NM ICEBERG5 5839S 04948W 2X1NM 4.ICEBERGS AREA A5700S 02000W 4700S 02000W 5200S 04900W 6100S 04900W B5600S 04900W 6100S 04900W 6600S 06600W 6600S 06600W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-5
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 4/5 VEER SECTOR W 4 BY 4/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 5/4 WITH GUSTS VEER NW 4/5 BY 4/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 4/5 VEER SECTOR W 4 BY 4/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 5/4 WITH GUSTS VEER NW 4/5 BY 4/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : SECTOR S 4/3 BACK NE 4/5 BY 4/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR S 3/4 BACK SECTOR E 5/7 BY 4/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
EREBUS Y TERROR GULF : SW 4/5 VEER NW 5/4 BY 4/0900 PROB OF MIST VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80W: SECTOR N 4/5 INCR SECTOR N 7/8 BY 4/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 3/4 VEER SECTOR N 5/7 GUST WITH 8 INTENSITY BY 4/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 4/3 VEER NW 4/7 GUST WITH 8 INTENSITY BY 4/0600 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
NORTHERN WEDDELL SEA N OF 64S: SW 5/4 VEER SECTOR W 5 BY 4/1500 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 4/5 WITH GUSTS VEER SECTOR W 4 BY 4/1500 PROB OF MIST VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 BACK NE 5/7 BY 4/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE=