1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 29, JUNE 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
859/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST VEER SECTOR W IN 60S-70S 50W-30W UNTIL 29/1800
860/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 61S-66S 65W-50W UNTIL 29/1200
861/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 63S-69S 90W-75W FROM 29/0600 UNTIL 30/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 979HPA 61S 90W MOV SE DPN
LOW 939HPA 68S 55W MOV SE DPN EXTENDS CFNT AT 68S 55W 65S 43W 60S 49W MOV E
281400 UTC 1.SEA ICE LIMIT 6002S 02000W 5716S 02618W 5749S 03217W 5758S 03757W 5836S 04317W 5911S 04814W 6130S 05247W 6200S 05655W 6326S 06033W 6411S 06337W 6527S 06559W 6613S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5253S 03142W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4739S 02253W 4X1NM ICEBERG2 5248S 03241W 3X1NM 4.ICEBERGS AREA A60015S 02000W 4200S 02000W 5035S 03500W 5830S 03300W B58030S 03300W 5130S 03430W 5620S 04940W 5935S 04815W C58035S 04515W 5620S 04840W 6150S 06716W 6320S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-06-30
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 7/5 GUST WITH 8 INTENSITY BACK SW 6/5 WITH GUSTS BY 29/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 8 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 29/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 7/5 GUST WITH 8 INTENSITY BACK SW 6/5 WITH GUSTS BY 29/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 8 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 29/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SW 7/5 WITH GUSTS BACK SE 4/3 BY 29/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS MORNING VIS MODERATE TO GOOD
MARGARITA BAY : NW 5/4 VEER SECTOR N 4/3 BY 29/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NW 7/8 WITH GUSTS BACK SW 7/5 BY 29/0600 PROB OF MIST PROB OFCOASTAL BLIZZARD IMPR DURING THE EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 6/5 WITH GUSTS BACK SW 6/7 WITH GUSTS BY 29/0600 PROB OF MIST PROB OFSCT SH OF RAIN SH OF SNOW SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 5/6 WITH GUSTS BACK SW 7 GUST WITH 8 INTENSITY BY 29/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 4/5 BACK SW 5/7 BY 29/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 65S: NW 7/8 WITH GUSTS BACK SECTOR W 7/5 GUST WITH 8 INTENSITY BY 29/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: NE 9 WITH GUSTS BACK SECTOR W 8/7 WITH GUSTS BY 29/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 BACK NE 7/8 WITH GUSTS BY 29/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-06-29, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 295: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SECTOR N
BETWEEN 35S-50S 20W-30W FROM 29/1800
WARNING 294: LOW 1005HPA AT 38S 47W MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM
SECTOR N BETWEEN 35S-50S AND 30W-40W
WARNING 293: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 WITH GUST BETWEEN
50S-60S AND 50W-60W UNTIL 29/0300
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 1014HPA 44S 58W MOV SE WKN EXP 49S 47W BY 29/1200 EXTENDS CFNT AT 44S 58W
40S 56W 37S 57W
CFNT AT 59S 65W 56S 66W 51S 67W MOV E
LOW 1005HPA 38S 47W MOV SE DPN EXP 47S 37W BY 29/2100 EXTENDS CFNT AT 38S 47W
33S 48W MOV E
CFNT AT 59S 53W 50S 58W 43S 64W MOV E
HIGH 1029HPA 44S 29W MOV E INTSF
281400 UTC 1.SEA ICE LIMIT 6002S 02000W 5716S 02618W 5749S 03217W 5758S 03757W
5836S 04317W 5911S 04814W 6130S 05247W 6200S 05655W 6326S 06033W 6411S 06337W
6527S 06559W 6613S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5253S 03142W 16X6NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4739S 02253W 4X1NM ICEBERG2 5248S 03241W
3X1NM 4.ICEBERGS AREA A60015S 02000W 4200S 02000W 5035S 03500W 5830S 03300W
B58030S 03300W 5130S 03430W 5620S 04940W 5935S 04815W C58035S 04515W 5620S
04840W 6150S 06716W 6320S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-06-30
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 4/3 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR W 4 BACK SECTOR S BY 29/2100 VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR W 4/3 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SW 4 VEER W 4/5 BY 29/0900 LOW PROB OF
DRIZZLE DURING THE EVENING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SW 4/5 LOW PROB OF DRIZZLE TOWARDS
MORNING VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5/6 WITH GUSTS VEER SECTOR W 5
WITH GUSTS BY 29/1800 VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5/6 WITH GUSTS VEER SECTOR W
5/6 WITH GUSTS BY 29/1200 VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: SECTOR W 5/6 WITH GUSTS VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR W 8/6 WITH GUSTS
INCR SECTOR W 8 BY 29/0600 LOW PROB OF RAIN AND SNOW MIXTURE VIS GOOD TO
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6 INCR SECTOR W 8 WITH GUSTS BY
29/0600 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
ISLAS MALVINAS COASTS: SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF RAIN AND SNOW
MIXTURE VIS MODERATE TO POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: VRB 4 INCR SECTOR N 5/6 BY 29/0900
AFTERWARDS 8 BY 29/1800 PROB OF RAIN UNTIL 29/2100 VIS GOOD TO POOR
W OF 45W: SECTOR W 6/7 WITH GUSTS PROB OF RAIN IMPR TOWARDS MORNING VIS POOR TO
MODERATE OCNL GOOD
REST OF THE AREA: SECTOR N 8 BACK SECTOR W 6 WITH GUSTS BY 29/1500 PROB OF RAIN
VIS POOR OCNL VERY POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: VRB 4 INCR SECTOR N 6 WITH
GUSTS BY 29/0900 AFTERWARDS 8 BY 29/1800 PROB OF RAIN STARTING EVENING VIS GOOD
TO POOR OCNL VERY POOR
REST OF THE AREA: SECTOR N 8 WITH GUSTS BACK SECTOR W 7 GUST WITH 8 INTENSITY
BY 29/1800 PROB OF RAIN VIS VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45 - E OF 50W: SECTOR N 6 WITH
GUSTS BACK SECTOR W 7 WITH GUSTS BY 29/0900 PROB OF RAIN VIS POOR
S OF 45 - E OF 50W: SECTOR N 4 BACK SW 5/6 BY 29/1500 PROB OF RAIN AND SNOW
MIXTURE VIS POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR N 6/7 WITH GUSTS PROB OF RAIN
VIS MODERATE TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 6 WITH GUSTS PROB OF
RAIN AND SNOW MIXTURE VIS POOR
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS
POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6 WITH GUSTS BACK SECTOR S 7 GUST
WITH 8 INTENSITY BY 29/2100 PROB OF PRECIPITATIONS SNOW FALL VIS VERY POOR TO
POOR
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