1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-17, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 425: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 45S-50S AND 40W-55W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
161400 UTC 1.SEA ICE LIMIT 5527S 02000W 5408S 02618W 5439S 03218W 5557S 03757W
5658S 04316W 5914S 04813W 5921S 05247W 6157S 05654W 6223S 06033W 5937S 06337W
6115S 06559W 6053S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5741S 04600W 28X25NM
D33B 5927S 04732W 21X12NM A76C 5428S 02631W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D32 5736S 03857W 9X6NM ICEBERG1 5742S 04757W 5X3NM ICEBERG2 5953S 05104W 5X3NM
ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5814S 05005W 3X1NM 4.ICEBERGS AREA A5516S
02000W 5001S 02000W 5000S 03909W 5820S 04000W B5820S 04000W 5000S 03933W 6103S
06716W 6145S 06716W
LOW 990HPA 52S 52W MOV E WKN EXTENDS CFNT AT 52S 50W 45S 55W 40S 62W MOV E
HIGH 1028HPA 33S 45W MOV E INTSF EXP 30S 38W BY 18/1200
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-18
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3/4 PROB OF MIST DURING THE MORNING VIS GOOD
OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR N 5 WITH GUSTS VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 3/4 PROB OF MIST DURING THE MORNING VIS GOOD
OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4 PROB OF FOG MIST DURING THE
MORNING VIS MODERATE OCNL POOR TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 5 WITH GUSTS BACK SECTOR N
VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 4 BACK SECTOR N 6 WITH GUSTS
VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5 WITH GUSTS BACK SECTOR N 6
WITH GUSTS LOW PROB OF ISOL RAIN DURING THE MORNING VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 5 WITH GUSTS BACK SECTOR N 6 WITH
GUSTS LOW PROB OF ISOL RAIN STARTING EARLY MORNING VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): VRB 5 BACK SECTOR N LOW PROB OF ISOL DRIZZLE
DURING THE MORNING WORSENING WITH PROB OFISOL RAIN STARTING NIGTH VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR S 6/5 WITH GUSTS BACK SECTOR N WITH GUSTS PROB OF
SH RAIN AND SNOW MIXTURE DURING THE MORNING VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 45W: SECTOR W 5/6 WITH GUSTS PROB OF
ISOL SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: SECTOR N 6 WITH GUSTS DECR VRB 4 PROB OF MIST VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR N 6/7 WITH GUSTS PROB OF SH
RAIN SPELLS OF GOOD WEATHER VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 55 - S OF 45S: SECTOR W 7/8 WITH
GUSTS BACK SECTOR S 7 WITH GUSTS PROB OF SH RAIN NXT PROB OF RAIN AND SNOW
MIXTURE STARTING EARLY MORNING VIS POOR TO MODERATE
W OF 55W: SECTOR W 6 WITH GUSTS BACK SECTOR N 5 WITH GUSTS PROB OF ISOL RAIN
DURING THE MORNING VIS MODERATE
REST OF THE AREA: SECTOR W 7 WITH GUSTS BACK SECTOR S 6 WITH GUSTS PROB OF SH
RAIN SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 6 WITH GUSTS PROB OF RAIN AND
SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SECTOR W 6/7 WITH GUSTS PROB
OF ISOL SNOW FALL VIS MODERATE
REST OF THE AREA: SECTOR N 6 WITH GUSTS BACK SECTOR W WITH GUSTS PROB OF RAIN
AND SNOW MIXTURE IMPR STARTING EVENING VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/5 WITH GUSTS PROB OF RAIN AND
SNOW MIXTURE STARTING EARLY MORNING VIS MODERATE
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NNNN=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 17, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1159/2026 STRONG BARIC GRADIENT ON SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FL
OTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60
S-64S 62W-50W UNTIL 18/0900
1160/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV NE DEEPENING PROV
OKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 64S-70S 90W-70W UNTIL 18/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 965HPA 68S 45W MOV E DPN
LOW 964HPA 71S 50W MOV E WKN
LOW 963HPA 72S 85W MOV E DPN
161400 UTC 1.SEA ICE LIMIT 5527S 02000W 5408S 02618W 5439S 03218W 5557S 03757W 5
658S 04316W 5914S 04813W 5921S 05247W 6157S 05654W 6223S 06033W 5937S 06337W 611
5S 06559W 6053S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5741S 04600W 28X25NM D33
B 5927S 04732W 21X12NM A76C 5428S 02631W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D32
5736S 03857W 9X6NM ICEBERG1 5742S 04757W 5X3NM ICEBERG2 5953S 05104W 5X3NM ICEB
ERG3 5621S 05024W 4X3NM ICEBERG4 5814S 05005W 3X1NM 4.ICEBERGS AREA A5516S 02000
W 5001S 02000W 5000S 03909W 5820S 04000W B5820S 04000W 5000S 03933W 6103S 06716W
6145S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-18
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 5/6 WITH GUSTS INCR SECTOR W
7 GUST WITH 8 INTENSITY BY 17/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING
STARTING NOON VIS GOOD TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 7/8 GUST WITH 9 INTE
NSITY DECR SECTOR W 7 WITH GUSTS BY 18/0300 PROB OF MIST PROB OFINTERMITTENT SNO
W FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MOD
ERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 5/6 WITH GUSTS INCR SECTOR W 7 GUST WI
TH 8 INTENSITY BY 17/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING
NOON VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 7/8 GUST WITH 9 INTENSITY DECR
SECTOR W 7 WITH GUSTS BY 18/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPE
LLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SECTOR W 4/5 VEER NW 4 BY 18/0300 PROB OF MIST PROB OFISOL SNO
W FALL WORSENING STARTING NOON VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : NW 4/5 WITH GUSTS VEER SECTOR N 4/6 BY 17/2100 PROB OF MIST PROB
OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD V
IS VERY POOR TO MODERATE
EREBUS Y TERROR GULF : SW 3/4 VEER NW 4/4 BY 17/1800 AFTERWARDS 6/7 BY 18/0300 P
ROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL
VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 4/5 INCR SECTOR S 7 WITH GUSTS BY
17/2100 PROB OF MIST PROB OF SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO
MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 8 GUST WITH 9 INTENSITY DE
CR SECTOR W 7/5 WITH GUSTS BY 18/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL
IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 7 WITH GUSTS BACK SW 4/3 B
Y 18/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS O
F GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: NW 5/6 BACK SECTOR W 5/4 WITH GUSTS BY 17/1800 PR
OB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURIN
G THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 3/4 WITH GUSTS BACK SECTOR W 5/4 WITH
GUSTS BY 18/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF
GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 VEER SECTOR S 5/6 BY 17/2100 PROB O
F MIST VIS GOOD TO MODERATE=