1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-04, 12:00 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 PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) BETWEEN 45S-50S AND 20W-30W
WARNING 306: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SECTOR S WITH
GUST BETWEEN 35S-40S AND 30W-45W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1029HPA 37S 58W MOV SE WKN EXP 43S 43W BY 05/1200 EXTENDS RIDGE AT 37S 58W
45S 53W 52S 49W
LOW 1017HPA 48S 66W MOV SE WKN
041400 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 6139S 05246W 28X25NM
A76C 5228S 03205W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4732S 02212W
3X1NM ICEBERG2 5244S 03227W 2X1NM ICEBERG3 6142S 05333W 2X1NM 4.ICEBERGS AREA
A6048S 02000W 4300S 02000W 5400S 03700W 5746S 03618W B5746S 03618W 5700S 04100W
6100S 05700W 6243S 05600W C6243S 05600W 6100S 06000W 6500S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-5
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 MIST DISSIPATING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR S 3 BACK SECTOR E PROB OF ISOL RAIN SPELLS OF GOOD
WEATHER VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 4/3 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER
VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 3 VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 3/4 VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/5 WITH GUSTS DECR 4/3 VIS
GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/4 WITH GUSTS BACK SECTOR W 3
VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): VRB 3 BACK SECTOR S PROB OF ISOL RAIN IMPR
TOWARDS NIGTH VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 4 TEMPO BACK SECTOR W 3 VIS GOOD
ISLAS MALVINAS COASTS: SECTOR N 3 BACK SECTOR W 3/4 PROB OF ISOL RAIN IMPR
TOWARDS EARLY MORNING VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR W 3/4 VEER SECTOR E 4/6 WITH
GUSTS PROB OF HVY RAIN SPELLS OF GOOD WEATHER VIS MODERATE
E OF 45W: SECTOR S 8/6 WITH GUSTS PROB OF HVY SH RAIN SPELLS OF GOOD WEATHER
VIS POOR
REST OF THE AREA: SECTOR S 6 WITH GUSTS VEER SECTOR N 3 PROB OF ISOL SH RAIN
VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W - S OF 45S: SECTOR W 8/6 WITH
GUSTS PROB OF ISOL RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS POOR
REST OF THE AREA: SECTOR W 6/5 WITH GUSTS BACK SECTOR S 5/6 WITH GUSTS PROB OF
ISOL RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 3 BACK SECTOR N
PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR S 3 VEER SECTOR W 3/4 PROB OF ISOL RAIN VIS GOOD OCNL
MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 8/6 WITH GUSTS PROB OF ISOL
SNOW FALL VIS POOR OCNL VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR W 6/5 WITH GUSTS PROB OF ISOL
RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/5 WITH GUSTS VEER SECTOR N 6 WITH
GUSTS PROB OF ISOL RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS
MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 04, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
889/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-64S 70W-50W UNTIL 05/0000
890/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 64S-67S 58W-50W UNTIL 04/2100
891/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-65S 50W-30W UNTIL 04/1800
892/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST BACK SECTOR W IN 66S-72S 90W-70W UNTIL 05/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 947HPA 71S 82W MOV E DPN
LOW 976HPA 67S 61W MOV SE DPN
LOW 974HPA 63S 24W MOV SE WKN
RIDGE 60S 48W 63S 48W 68S 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 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-5
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 7/5 WITH GUSTS VEER NW 8 WITH GUSTS BY 5/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 8 WITH GUSTS VEER NW 9 WITH GUSTS BY 04/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 7/5 WITH GUSTS VEER NW 8 WITH GUSTS BY 5/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH 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 04/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
GERLACHE STRAIT : NW 5/7 WITH GUSTS VEER SECTOR N 5 GUST WITH 8 INTENSITY BY 04/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NOON VIS POOR TO MODERATE
MARGARITA BAY : NW 5/7 WITH GUSTS VEER NE 7 WITH GUSTS BY 5/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
EREBUS Y TERROR GULF : SW 5/7 WITH GUSTS VEER NW 7/8 WITH GUSTS BY 5/0300 VIS GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 8 WITH GUSTS VEER NW 7/8 WITH GUSTS BY 04/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 7/8 WITH GUSTS VEER NW 5/6 WITH GUSTS BY 5/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 4/5 WITH GUSTS BACK NW 5/6 BY 04/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 65S: SW 9 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 04/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NOON VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 7/5 WITH GUSTS VEER SECTOR W 5/4 BY 04/1800 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 4/5 BACK SECTOR E 5/7 BY 04/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE=