1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 04, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
884/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST BACK SECTOR W IN 60S-65S 90W-70W UNTIL 04/0900
885/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST VEER NW IN 60S-64S 70W-50W UNTIL 04/1800
886/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST IN 64S-67S 58W-50W FROM 04/0900 UNTIL 04/2100
887/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-65S 50W-30W UNTIL 04/1500
888/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST BACK SECTOR W IN 66S-72S 90W-70W FROM 04/0300 UNTIL 05/0300
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 957HPA 71S 82W MOV E DPN
LOW 958HPA 67S 40W MOV SE DPN
LOW 969HPA 64S 87W MOV SE DPN
RIDGE 60S 60W 63S 59W 65S 58W MOV E WKN
031400 UTC 1.SEA ICE LIMIT 6022S 02000W 5707S 02617W 5817S 03218W 5822S 03757W 5912S 04316W 5937S 04813W 6145S 05247W 6244S 05655W 6229S 06032W 6414S 06336W 6532S 06559W 6613S 06716W 2.ICEBERGS GREATER THAN 10NM A81 6151S 05314W 28X25NM A76C 5235S 03216W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4732S 02212W 3X1NM ICEBERG2 5251S 03221W 2X1NM ICEBERG3 6142S 05333W 2X1NM 4.ICEBERGS AREA A6018S 02000W 4300S 02000W 4500S 03500W 5819S 03500W B5819S 03500W 5100S 03500W 5500S 04900W 6139S 04858W C6139S 04858W 5900S 04900W 5900S 06000W 6300S 06716W 6647S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-5
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 8 WITH GUSTS VEER NW 9 WITH GUSTS BY 4/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 8 WITH GUSTS VEER NW 8 WITH GUSTS BY 4/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 8 WITH GUSTS VEER NW 9 WITH GUSTS BY 4/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 8 WITH GUSTS VEER NW 9 WITH GUSTS BY 4/1200 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
GERLACHE STRAIT : NE 4/5 WITH GUSTS BACK NW 7 GUST WITH 8 INTENSITY BY 4/0600 AFTERWARDS SECTOR W 7 WITH GUSTS BY 4/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NOON VIS POOR TO MODERATE
MARGARITA BAY : NE 5/7 WITH GUSTS BACK NW 7 GUST WITH 8 INTENSITY BY 4/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
EREBUS Y TERROR GULF : SW 4/5 VEER NW 5/7 WITH GUSTS BY 4/0600 PROB OF MIST IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: NW 9 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 4/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 7/8 WITH GUSTS BACK SECTOR W 9 WITH GUSTS BY 4/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 7/8 WITH GUSTS BACK NE 5/4 BY 4/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 65S: SECTOR W 9 WITH GUSTS BACK SW 8/7 WITH GUSTS BY 4/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 8/7 WITH GUSTS VEER SECTOR W 5/4 BY 4/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR DURING THE MORNING VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 4/5 BACK SECTOR N 5/7 BY 4/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-4, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 307: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) BETWEEN 45S-50S 20W-30W
WARNING 306: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SECTOR S WITH
GUST BETWEEN 35S-40S AND 30W-50W
WARNING 305: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 55S-60S AND 40W-60W UNTIL 04/1200
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1030HPA 38S 57W MOV SE WKN EXP 43S 53W BY 05/0000
CFNT AT 54S 27W 49S 34W 47S 47W MOV E
031400 UTC 1.SEA ICE LIMIT 6022S 02000W 5707S 02617W 5817S 03218W 5822S 03757W
5912S 04316W 5937S 04813W 6145S 05247W 6244S 05655W 6229S 06032W 6414S 06336W
6532S 06559W 6613S 06716W 2.ICEBERGS GREATER THAN 10NM A81 6151S 05314W 28X25NM
A76C 5235S 03216W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4732S 02212W
3X1NM ICEBERG2 5251S 03221W 2X1NM ICEBERG3 6142S 05333W 2X1NM 4.ICEBERGS AREA
A6018S 02000W 4300S 02000W 4500S 03500W 5819S 03500W B5819S 03500W 5100S 03500W
5500S 04900W 6139S 04858W C6139S 04858W 5900S 04900W 5900S 06000W 6300S 06716W
6647S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-5
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 PROB OF FOG AND MIST IN PATCHES STARTING
EARLY MORNING DISSIPATING DURING THE MORNING VIS GOOD TO MODERATE OCNL POOR
OUTER RIO DE LA PLATA: SECTOR S 4 BACK SECTOR E BY 4/2100 PROB OF FOG AND MIST
IN PATCHES STARTING EARLY MORNING DISSIPATING TOWARDS MORNING VIS GOOD TO
MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR S 6/5 WITH GUSTS BACK SECTOR E BY 4/2100 PROB
OF FOG AND MIST IN PATCHES STARTING EARLY MORNING DISSIPATING TOWARDS MORNING
VIS GOOD TO MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): VRB 3/4 PROB OF FOG AND MIST IN PATCHES
STARTING EARLY MORNING DISSIPATING TOWARDS MORNING VIS GOOD TO MODERATE OCNL
POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 WITH GUSTS VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6 WITH GUSTS LOW PROB OF
DRIZZLE TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5 WITH GUSTS BACK SECTOR W 4 BY
4/1800 LOW PROB OF DRIZZLE TOWARDS THE END OF THE PERIOD VIS GOOD OCNL
MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): VRB 4 INCR SECTOR S 5 BY 4/1800 PROB OF
MIST DURING THE EARLY MORNING LOW PROB OF DRIZZLE DURING THE EVENING VIS GOOD
OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): W 6/5 WITH GUSTS VEER NW BY 4/0600 VIS GOOD
ISLAS MALVINAS COASTS: VRB 3 INCR SECTOR N 4 BY 4/1500 LOW PROB OF ISOL RAIN
STARTING EARLY MORNING IMPR TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR S 6 WITH GUSTS VEER SECTOR W
BY 4/0600 VIS GOOD
W OF 30 - E OF 40W: SECTOR E 6/7 GUST WITH 8 INTENSITY VEER SECTOR S 8 WITH
GUSTS BY 4/1500 PROB OF RAIN VIS MODERATE TO VERY POOR
W OF 40 - E OF 50W: SECTOR S 8 WITH GUSTS DECR 7/6 WITH GUSTS BY 4/1500 PROB OF
RAIN VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR S 6/5 WITH GUSTS BACK SECTOR E 4 BY 4/2100 PROB OF
ISOL RAIN IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SW 6 WITH GUSTS
PROB OF ISOL RAIN STARTING EARLY MORNING VIS GOOD TO MODERATE
E OF 30 - S OF 45S: SECTOR W 7 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY
4/1800 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
W OF 30 - N OF 45S: VRB 4 INCR SECTOR S 5 WITH GUSTS BY 4/1800 LOW PROB OF
DRIZZLE STARTING EARLY MORNING VIS GOOD OCNL MODERATE
REST OF THE AREA: SW 7/6 WITH GUSTS LOW PROB OF ISOL RAIN STARTING EVENING VIS
POOR TO MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR S 5 WITH
GUSTS LOW PROB OF DRIZZLE DURING THE MORNING VIS GOOD OCNL MODERATE
E OF 50 - S OF 45S: SECTOR S 5/4 DECR VRB 3 BY 4/1800 LOW PROB OF ISOL RAIN
TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR W 5/4 VEER SECTOR N 5 WITH GUSTS BY 4/1500 LOW PROB OF
ISOL RAIN VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 8 WITH GUSTS PROB OF SNOW FALL
VIS VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 7/6 GUST WITH 8
INTENSITY DECR 5 BY 4/1800 PROB OF ISOL RAIN STARTING EVENING VIS POOR OCNL VERY
POOR TO MODERATE
REST OF THE AREA: SECTOR W 8 WITH GUSTS DECR 7/6 WITH GUSTS BY 4/1200 PROB OF
RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/6 GUST WITH 8 INTENSITY LOW PROB
OF ISOL RAIN VIS POOR TO MODERATE
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