1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 20, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 984HPA 62S 54W MOV E DPN
HIGH 985HPA 65S 53W MOV E INTSF EXTENDS RIDGE AT 65S 53W 67S 49W 69S 40W MOV E
RIDGE 985HPA 65S 53W MOV E INTSF EXTENDS RIDGE AT 65S 53W 67S 49W 69S 40W MOV E
RIDGE 60S 90W 64S 83W 68S 81W MOV E INTSF
191400 UTC 1.SEA ICE LIMIT 5529S 02000W 5408S 02617W 5336S 03217W 5536S 03757W 5710S 04316W 5821S 04813W 5954S 05248W 6232S 05655W 6252S 06033W 6358S 06336W 6017S 06558W 6051S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5742S 04531W 28X25NM D33B 5934S 04550W 21X12NM A76C 5430S 02629W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D32 5701S 03820W 9X6NM ICEBERG1 57181S 04733W 5X3NM ICEBERG2 5910S 05042W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5807S 04958W 3X1NM 4.ICEBERGS AREA A5600S 02000W 5000S 02000W 5900S 04800W 5300S 04800W 5000S 04000W B5900S 06200W 6500S 06500W 5900S 04800W 5300S 04800W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-21
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5 WITH GUSTS VEER SECTOR W 5/6 WITH GUSTS BY 20/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 5/6 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 20/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 5 WITH GUSTS VEER SECTOR W 5/6 WITH GUSTS BY 20/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 5/6 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 20/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SE 4/3 VEER SW 4/5 BY 20/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
MARGARITA BAY : SECTOR E 4/3 BACK NE 4/5 BY 20/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS MODERATE TO POOR
EREBUS Y TERROR GULF : SECTOR S 3/4 VEER SW 4 BY 20/1200 PROB OF FOG AND MIST IN PATCHES IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 5/6 WITH GUSTS VEER SECTOR W 4/5 BY 20/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 5/4 VEER NW 5/6 BY 20/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 3/4 VEER SECTOR N 5/7 WITH GUSTS BY 20/1200 PROB OF FOG AND MIST IN PATCHES WORSENING STARTING EARLY MORNING VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA N OF 64S: SECTOR S 3/4 VEER SW 5 WITH GUSTS BY 20/1200 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: SECTOR S 4/5 VEER SECTOR W 4/3 BY 20/1500 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 3/4 VEER SE 5/4 BY 20/1500 PROB OF MIST VIS GOOD TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-20, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 429: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 FROM SECTOR N
WITH GUST BETWEEN 35S-40S 40W-50W FROM 20/2100
WARNING 428: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 FROM SECTOR S
WITH GUST IN PENINSULA DE VALDES COASTS GOLFO DE SAN JORGE COASTS FROM 20/2100
WARNING 427: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 WITH GUST IN
SOUTH EAST AREA (50S- 60S AND 20W- 40W) UNTIL 20/0900
PART 2 GENERAL SYNOPSIS AT 21:00UTC
191400 UTC 1.SEA ICE LIMIT 5529S 02000W 5408S 02617W 5336S 03217W 5536S 03757W
5710S 04316W 5821S 04813W 5954S 05248W 6232S 05655W 6252S 06033W 6358S 06336W
6017S 06558W 6051S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5742S 04531W 28X25NM
D33B 5934S 04550W 21X12NM A76C 5430S 02629W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D32 5701S 03820W 9X6NM ICEBERG1 57181S 04733W 5X3NM ICEBERG2 5910S 05042W 5X3NM
ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5807S 04958W 3X1NM 4.ICEBERGS AREA A5600S
02000W 5000S 02000W 5900S 04800W 5300S 04800W 5000S 04000W B5900S 06200W 6500S
06500W 5900S 04800W 5300S 04800W
HIGH 1026HPA 33S 37W MOV E
LOW 993HPA 41S 78W MOV E DPN EXTENDS CFNT AT 43S 78W 33S 77W 27S 88W MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-21
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 4 BACK SECTOR S 5/6 BY 20/1800 PROB OF HVY
STORMS STARTING EVENING VIS GOOD TO POOR
OUTER RIO DE LA PLATA: SECTOR N 4 BACK SECTOR S 5/6 WITH GUSTS BY 20/1800 PROB
OF HVY STORMS STARTING EVENING VIS GOOD TO POOR
URUGUAY SOUTH EAST COASTS: SECTOR N 5/6 WITH GUSTS PROB OF SH DURING THE EVENING
HVY STORMS TOWARDS NIGTH VIS GOOD TO POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5/7 WITH GUSTS BACK SW 6/7 WITH
GUSTS BY 20/2100 INCR PROB OF SH HVY STORMS STARTING EVENING VIS MODERATE TO
POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5/7 WITH GUSTS BACK SECTOR W
5/7 WITH GUSTS BY 20/1200 INCR 7/8 WITH GUSTS BY 20/2300 PROB OF SH STORMS
STARTING EARLY MORNING VIS MODERATE TO POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/7 WITH GUSTS BACK SW 7/8
WITH GUSTS BY 20/2100 INCR PROB OF RAIN STORMS HVY RAIN TOWARDS NIGTH VIS
MODERATE TO VERY POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 4 BACK SECTOR S 5/6 WITH GUSTS
BY 20/0900 INCR 8 WITH GUSTS BY 20/2100 PROB OF RAIN HVY RAIN STARTING EVENING
VIS MODERATE TO VERY POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 5/7 WITH GUSTS PROB OF SH VIS
MODERATE TO POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 5/7 WITH GUSTS PROB OF SH RAIN AND
SNOW MIXTURE VIS MODERATE TO POOR
ISLAS MALVINAS COASTS: SECTOR S 5/6 WITH GUSTS INCR 6/7 WITH GUSTS BY 20/1800
PROB OF SH VIS MODERATE TO POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SW 4/5 VEER SECTOR W 5/4 BY 20/1500
VIS GOOD TO MODERATE
E OF 40W: SECTOR W 5 VEER SECTOR N 6/7 WITH GUSTS BY 20/1500 INCR PROB OF RAIN
TOWARDS NIGTH VIS MODERATE OCNL POOR
E OF 50W: SECTOR N 6/7 WITH GUSTS INCR 7/8 WITH GUSTS BY 20/1800 PROB OF HVY
RAIN STARTING EVENING VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR N 5/7 WITH GUSTS PROB OF SH STORMS TOWARDS NIGTH VIS
MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR W 5/6 WITH GUSTS PROB
OF SH VIS MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS INCR 6/7 GUST WITH 8 INTENSITY BY
20/1500 PROB OF ISOL RAIN VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) W OF 55 - S OF 45S: SECTOR N 5/6 WITH
GUSTS BACK SECTOR S 7 GUST WITH 8 INTENSITY BY 20/1500 INCR 8 WITH GUSTS BY
20/2300 PROB OF HVY RAIN VIS MODERATE TO VERY POOR
REST OF THE AREA: SECTOR N 5/7 GUST WITH 8 INTENSITY PROB OF RAIN VIS MODERATE
TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR N 8/7 WITH GUSTS BACK
SECTOR W 6/5 WITH GUSTS BY 20/0900 PROB OF SH VIS POOR TO MODERATE
REST OF THE AREA: SECTOR N 8/7 WITH GUSTS BACK SECTOR W 5 WITH GUSTS BY 20/0600
PROB OF SH RAIN AND SNOW MIXTURE VIS POOR TO MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - S OF 55S: SECTOR W 5 BACK
SECTOR S BY 20/2100 INCR PROB OF SH RAIN AND SNOW MIXTURE VIS MODERATE
W OF 50 - N OF 55S: SECTOR W 5 BACK SECTOR S 5 BY 20/2100 PROB OF SH HVY RAIN
TOWARDS NIGTH VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 5 BACK SECTOR S 6/7 WITH GUSTS BY 20/1200 PROB OF SH
RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5/6 WITH GUSTS BACK SECTOR S 6/7 WITH
GUSTS BY 20/0900 PROB OF SH RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
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