1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 29, MARCH 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 STORM WARNING:
413/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 10 FROM SECTOR E WITH GUST BACK NE IN 60S-70S 90W-70W UNTIL 30/0800
GALE WARNING:
414/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MARGARITA BAY MOV SE DEEPENING PROVOKES WINDS FORCE 9 FROM SECTOR E WITH GUST IN 64S-69S 70W-65W UNTIL 29/1800
415/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV SE DEEPENING WILL PROVOKE WINDS FORCE 9 FROM NE WITH GUST IN 60S-68S 58W-50W UNTIL 29/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1008HPA 69S 45W MOV NE INTSF EXTENDS RIDGE AT 69S 45W 63S 43W 60S 42W MOV NE
LOW 928HPA 64S 82W MOV SE DPN
LOW 982HPA 63S 62W MOV SE DPN
281400 UTC 1.SEA ICE LIMIT 7052S 02000W 6617S 03023W 6130S 03147W 6244S 03258W 6135S 04305W 6245S 05035W 6257S 05513W 6434S 05528W 6408S 06334W 6525S 06541W 6558S 06643W 6610S 06717W 2.ICEBERGS GREATER THAN 10NM A76C 5901S 03637W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5137S 03244W 5X2NM ICEBERG2 4830S 03151W 3X1NM ICEBERG3 4817S 03000W 4X1NM ICEBERG4 4826S 03005W 3X2NM ICEBERG5 4757S 02932W 2X2NM ICEBERG6 4830S 03027W 9X7NM ICEBERG7 5009S 03426W 9X7NM ICEBERG8 4956S 03005W 3X1NM 4.ICEBERGS AREA A 7200S 02000W 4200S 02000W 4300S 04000W 6200S 04000W B 4500S 04000W 6200S 04000W 5800S 05000W 6500S 05100W C 5800S 05000W 6500S 05100W 6300S 06716W 6900S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-30
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 5/6 WITH GUSTS INCR SECTOR N 9 WITH GUSTS BY 29/1800 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER STARTING NOON VIS MODERATE TO POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 9 WITH GUSTS BACK NW 6/5 WITH GUSTS BY 29/1800 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS W OF 60W: NW 5/6 WITH GUSTS INCR SECTOR N 9 WITH GUSTS BY 29/1800 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER STARTING NOON VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 9 WITH GUSTS BACK NW 6/5 WITH GUSTS BY 29/1800 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
GERLACHE STRAIT : NE 9/7 WITH GUSTS DECR NE 5 WITH GUSTS BY 29/1800 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE IMPR STARTING NOON VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR E 8/7 WITH GUSTS DECR SECTOR E 5 WITH GUSTS BY 29/1800 PROB OF ISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NE 7/8 BACK SW 5 WITH GUSTS BY 29/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR N 10 WITH GUSTS BACK NW 9 WITH GUSTS BY 29/2100 AFTERWARDS SECTOR W 8 WITH GUSTS BY 30/0300 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO VERY POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR E 9 BACK NE 9 BY 29/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 7/8 WITH GUSTS VEER SE 8 WITH GUSTS BY 30/0000 PROB OF MIST PROB OFMOD SNOW FALL WORSENING STARTING NOON VIS MODERATE TO POOR
NORTHERN WEDDELL SEA W OF 40W: NE 6/4 WITH GUSTS BACK NW 5/4 BY 30/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS MODERATE TO POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SW 6 GUST WITH 8 INTENSITY DECR SECTOR W 5/4 BY 29/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 BACK SECTOR E 4 BY 30/0000 VIS GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-03-29, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 131: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SW WITH
GUST BETWEEN 50S-60S AND 20W-30W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
281400 UTC 1.SEA ICE LIMIT 7052S 02000W 6617S 03023W 6130S 03147W 6244S 03258W
6135S 04305W 6245S 05035W 6257S 05513W 6434S 05528W 6408S 06334W 6525S 06541W
6558S 06643W 6610S 06717W 2.ICEBERGS GREATER THAN 10NM A76C 5901S 03637W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5137S 03244W 5X2NM ICEBERG2 4830S 03151W
3X1NM ICEBERG3 4817S 03000W 4X1NM ICEBERG4 4826S 03005W 3X2NM ICEBERG5 4757S
02932W 2X2NM ICEBERG6 4830S 03027W 9X7NM ICEBERG7 5009S 03426W 9X7NM ICEBERG8
4956S 03005W 3X1NM 4.ICEBERGS AREA A 7200S 02000W 4200S 02000W 4300S 04000W
6200S 04000W B 4500S 04000W 6200S 04000W 5800S 05000W 6500S 05100W C 5800S
05000W 6500S 05100W 6300S 06716W 6900S 06716W
STATIONARY FRONT INNER RIO DE LA PLATA NOT MOV NC
CFNT AT DRAKE AREA (55S- 60S AND 60W- 67W) MOV E
HIGH 1026HPA 37S 28W MOV NE WKN EXTENDS RIDGE AT 41S 42W 42S 52W
HIGH 1021HPA 42S 46W MOV E INTSF EXP 42S 42W BY 29/2100 EXTENDS RIDGE AT 47S 45W
49S 44W 54S 43W MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-03-30
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 PROB OF ISOL STORMS STARTING EARLY MORNING
SPELLS OF GOOD WEATHER VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR E 4/5 WITH GUSTS PROB OF HVY RAIN STORMS STARTING
EARLY MORNING VIS MODERATE TO POOR
URUGUAY SOUTH EAST COASTS: SECTOR E 4 PROB OF ISOL STORMS STARTING EARLY MORNING
VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): NE 4 PROB OF STORMS STARTING EARLY
MORNING VIS MODERATE TO POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): NE 5/4 PROB OF ISOL RAIN STARTING
EARLY MORNING SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/4 WITH GUSTS PROB OF MIST
FOG PATCHES STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6/5 BACK NW 5 BY 29/1500 VIS
GOOD
SOUTH PATAGONIA COASTS(48S - 54S): NW 7/6 GUST WITH 8 INTENSITY VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 6/5 WITH GUSTS PROB OF ISOL RAIN
DURING THE MORNING VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR N 6 WITH GUSTS VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: VRB 3 INCR SW 5/6 BY 29/1500 PROB
OF SH STARTING EVENING VIS GOOD TO MODERATE
W OF 30 - E OF 40W: VRB 3 PROB OF ISOL RAIN IMPR STARTING EARLY MORNING VIS
MODERATE TO GOOD
REST OF THE AREA: SECTOR E 4/5 WITH GUSTS PROB OF SH VIS MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 6 WITH GUSTS BACK
SW 7 GUST WITH 8 INTENSITY BY 29/1200 PROB OF SH VIS POOR
REST OF THE AREA: SECTOR W 5 WITH GUSTS DECR VRB 3 BY 29/1800 PROB OF SH IMPR
DURING THE MORNING VIS GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: VRB 3 VIS GOOD
REST OF THE AREA: NW 4/5 PROB OF FOG MIST VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 8 WITH GUSTS PROB OF SNOW
FALL VIS VERY POOR
REST OF THE AREA: SW 7 GUST WITH 8 INTENSITY VEER SECTOR N 5 BY 29/2100 PROB OF
SH OF SNOW IMPR DURING THE MORNING VIS POOR TO MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: VRB 3 INCR SECTOR N 5/6 WITH
GUSTS BY 29/0900 PROB OF SH STARTING EVENING VIS GOOD TO MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 6/5 WITH GUSTS PROB OF ISOL RAIN STARTING EARLY
MORNING VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 7/6 GUST WITH 8 INTENSITY PROB OF
RAIN STARTING EARLY MORNING SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
-----------------------------------------------------------------
NNNN=