1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-04-26, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 162: LOW 990HPA AT BUILDING EXPECTED 45S 49W BY 27/0000 WILL PROVOKE
WINDS FORCE 8 AROUND ITSELF WITH GUST BETWEEN 45S-50S 35W-50W FROM 26/1800
WARNING 161: LOW 972HPA AT 50S 65W MOV SE NOT CHANGE EXPECTED 56S 58W BY 27/0000
WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH GUST IN SOUTH WEST AREA (50S- 60S
AND 40W- 60W) FROM 26/0300
WARNING 160: LOW 972HPA AT 50S 65W MOV SE NOT CHANGE EXPECTED 56S 58W BY 27/0000
PROVOKES WINDS FORCE 10 FROM SW WITH GUST IN GOLFO DE SAN JORGE COASTS SOUTH
PATAGONIA COASTS FIN DEL MUNDO COASTS ISLAS MALVINAS COASTS UNTIL 27/2100
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 1001HPA 33S 22W MOV E NC EXTENDS CFNT AT 32S 20W 30S 22W MOV E ASOCIATED
WITH OFNT AT 35S 20W 34S 23W
LOW 1002HPA 49S 28W MOV NE WKN EXTENDS OFNT AT 47S 26W 50S 27W 51S 34W 49S 34W
MOV NE
HIGH 1018HPA 37S 40W MOV NE NC EXTENDS RIDGE AT 37S 39W 42S 41W 48S 41W MOV E
HIGH 1009HPA 56S 41W MOV NE INTSF EXP 48S 31W BY 27/0000
LOW 972HPA 50S 65W MOV SE NC EXP 56S 58W BY 27/0000 EXTENDS CFNT AT 53S 65W 50S
56W 42S 56W 38S 59W MOV E ASOCIATED WITH OFNT AT 53S 65W 49S 67W 48S 63W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-04-27
COASTAL AREAS:
INNER RIO DE LA PLATA: VRB 4 INCR SW 5/4 WITH GUSTS BY 26/0900 PROB OF HVY RAIN
STORMS NXT ISOL RAIN IMPR STARTING EARLY MORNING VIS MODERATE OCNL POOR TO
GOOD
OUTER RIO DE LA PLATA: SECTOR N 4 WITH GUSTS BACK SW 6/5 WITH GUSTS DECR 4 BY
26/2100 PROB OF HVY RAIN STORMS IMPR STARTING EARLY MORNING VIS MODERATE OCNL
POOR TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR N 4 WITH GUSTS BACK SW 6/5 WITH GUSTS DECR 4
BY 26/2100 PROB OF HVY RAIN STORMS IMPR STARTING EARLY MORNING VIS MODERATE OCNL
POOR TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SW 5 WITH GUSTS DECR 4 BY 26/1200
AFTERWARDS SECTOR W BY 26/2100 PROB OF HVY RAIN STORMS IMPR STARTING EARLY
MORNING NEXT SH IMPR VIS MODERATE OCNL POOR TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SW 6/5 GUST WITH 8 INTENSITY VEER W 5
WITH GUSTS BY 26/1800 PROB OF ISOL SH STORMS SPELLS OF GOOD WEATHER STARTING
EARLY MORNING VIS MODERATE OCNL GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SW 7/6 GUST WITH 8 INTENSITY DECR 5
WITH GUSTS BY 26/2100 PROB OF SCT SH RAIN IMPR TOWARDS THE END OF THE PERIOD VIS
MODERATE OCNL GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 8/7 WITH GUSTS BACK SW 6 GUST
WITH 8 INTENSITY PROB OF SH RAIN NXT RAIN AND SNOW MIXTURE VIS POOR OCNL
MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SW 10/8 WITH GUSTS DECR 7/6 GUST WITH 8
INTENSITY BY 26/2100 PROB OF HVY RAIN NXT SH OF SNOW SNOW FALL VIS VERY POOR
OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SW 9/8 WITH GUSTS DECR 7 GUST WITH 8
INTENSITY BY 26/2100 PROB OF HVY RAIN NXT SH OF SNOW SNOW FALL VIS VERY POOR
OCNL POOR
ISLAS MALVINAS COASTS: VRB 5 INCR SW 9/8 WITH GUSTS BY 26/0900 DECR 7 GUST WITH
8 INTENSITY BY 26/2100 PROB OF SH RAIN NXT RAIN AND SNOW MIXTURE VIS POOR OCNL
VERY POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SW 5 WITH GUSTS PROB OF SH SPELLS
OF GOOD WEATHER VIS MODERATE
E OF 45W: VRB 3 INCR NW 5/6 GUST WITH 8 INTENSITY BY 26/1200 WORSENING WITH
PROB OF HVY RAIN STORMS STARTING NOON VIS GOOD TO POOR
REST OF THE AREA: SECTOR N 6 GUST WITH 8 INTENSITY BACK SW 6/5 WITH GUSTS BY
26/0900 PROB OF HVY RAIN STORMS IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO
MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR S 6/5 WITH GUSTS DECR
4 PROB OF SH RAIN NXT RAIN AND SNOW MIXTURE IMPR TOWARDS THE END OF THE PERIOD
VIS MODERATE OCNL POOR TO GOOD
W OF 30 - N OF 45S: SW 5/4 WITH GUSTS BACK SECTOR N 5/6 WITH GUSTS BY 26/1500
PROB OF SH RAIN NXT RAIN STORMS VIS MODERATE TO POOR
E OF 35 - S OF 45S: SECTOR S 5/4 BACK SECTOR N 5/6 GUST WITH 8 INTENSITY BY
26/1800 PROB OF RAIN AND SNOW MIXTURE IMPR VIS MODERATE TO GOOD
REST OF THE AREA: VRB 4 INCR SECTOR N 6/8 WITH GUSTS BY 26/2100 PROB OF DRIZZLE
RAIN NXT RAIN STORMS SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR N 5/6 WITH
GUSTS BACK SECTOR W 6 WITH GUSTS BY 26/1500 PROB OF HVY RAIN STORMS NXT SH RAIN
VIS POOR TO MODERATE
E OF 50 - S OF 45S: SECTOR N 5/6 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY
26/1500 BACK SECTOR W 8 WITH GUSTS BY 26/2100 WORSENING WITH PROB OF HVY RAIN
STORMS VIS MODERATE TO POOR OCNL VERY POOR
REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF SH RAIN NXT RAIN
AND SNOW MIXTURE VIS POOR TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR S 5/4 VIS GOOD
REST OF THE AREA: VRB 3 INCR SECTOR N 4/5 WITH GUSTS BY 26/2100 VIS GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: NE 6 GUST WITH 8 INTENSITY
INCR 8 WITH GUSTS BY 26/1200 WORSENING WITH PROB OF SH RAIN VIS MODERATE TO
POOR
W OF 50 - N OF 55S: SECTOR N 7/8 WITH GUSTS BACK SW 6 WITH GUSTS BY 26/1500
PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
REST OF THE AREA: NE 6/8 WITH GUSTS DECR VRB 5 WITH GUSTS BY 26/2100 PROB OF SH
RAIN SPELLS OF GOOD WEATHER VIS POOR TO MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 6 WITH GUSTS INCR SW 7 GUST WITH 8
INTENSITY BY 26/1200 AFTERWARDS 6/5 WITH GUSTS BY 26/2100 PROB OF HVY RAIN NXT
RAIN AND SNOW MIXTURE VIS POOR OCNL MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 25, APRIL 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
450/2025 COLD FRONT AT NORTHER BELLINGSHAUSEN SEA MOV SE WEAKENING PROVOKES WINDS FORCE 8 FROM NE WITH GUST IN 60S-73S 70W-90W UNTIL 27/0600
451/2025 STRONG BARIC GRADIENT MOV E WEAKENING WILL PROVOKE WINDS FORCE 8 FROM NE WITH GUST IN 60S-64S 50W-60W FROM 26/0000 UNTIL 27/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
CFNT AT 66S 90W 685S 8W MOV SE WKN
TROUGH 70S 90W 70S 80W 72S 70W MOV S NC
RIDGE 60S 42W 65S 41W 70S 40W MOV E INTSF
241400 UTC 1.SEA ICE LIMIT 7008S 02000W 6638S 04800W 6619S 03329W 6849S 02529W 6437S 02213W 6330S 02903W 6406S 03738W 6144S 04143W 6136S 04840W 6139S 05516W 6337S 06153W 6559S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5447S 03900W 40X32NM A76C 6056S 04917W 16X7NM A74A 6124S 05157W 30X18NM A80A 6136S 05232W 9X7NM A23C 5614S 03649W 10X5NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 6203S 05423W 9X3NM ICEBERG2 5526S 03543W 2X1NM ICEBERG3 6123S 03957W 3X1NM ICEBERG4 5340S 03523W 7X1NM ICEBERG5 6207S 03945W 2X1NM ICEBERG6 5550S 03422W 3X1NM ICEBERG7 6227S 05512W 2X1NM ICEBERG8 5641S 03444W 4X1NM ICEBERG9 5500S 03719W 2X1NM ICEBERG10 5406S 03802W 3X1NM ICEBERG11 5418S 03746W 3X1NM ICEBERG12 5423S 03416W 9X2NM ICEBERG13 6110S 05105W 6X5NM ICEBERG14 6125S 05038W 5X3NM ICEBERG15 5431S 03730W 8X1NM ICEBERG16 6220S 05231W 3X1NM ICEBERG17 6139S 05114W 3X1NM ICEBERG18 6258S 05225W 2X2NM ICEBERG19 6137S 05211W 3X1NM 4.ICEBERGS AREA A: 6450S 02000W 4600S 02000W 4700S 03500W 6440S 03500W B: 6430S 03500W 5200S 03500W 5200S 05000W 6200S 05000W C: 6150S 05000W 5600S 05000W 5700S 06640W 6600S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-04-26
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 62W: SECTOR N 4 INCR NE 7 GUST WITH 8 INTENSITY BY 26/0600 PROB OF FOG MIST PROB OFINTERMITTENT RAIN VIS POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: N 5/6 INCR NE 7/8 WITH GUSTS BY 26/0400 PROB OF FOG MIST PROB OF RAIN SNOW FALL WORSENING DURING THE NIGTH VIS POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 62W: NE 8/7 WITH GUSTS BACK NE 5/4 BY 25/1800 PROB OF FOG MIST PROB OF SNOW FALL VIS POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: N 5/6 INCR NE 7 WITH GUSTS BY 25/1800 PROB OF FOG MIST PROB OF SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO POOR
GERLACHE STRAIT : NE 10 GUST WITH 8 INTENSITY DECR 7/5 WITH GUSTS BY 26/0000 PROB OF HVY SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE OCNL GOOD
MARGARITA BAY : NE 7 GUST WITH 8 INTENSITY DECR 5/4 BY 25/1800 PROB OF SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
EREBUS Y TERROR GULF : SECTOR N 6/7 GUST WITH 8 INTENSITY PROB OF FOG MIST STARTING EVENING PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80 - N OF 67S: SECTOR N 7/8 BACK SECTOR W 8 GUST WITH 8 INTENSITY BY 25/1800 PROB OF MIST PROB OF RAIN SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL VERY POOR TO POOR
NORTHER BELLINGSHAUSEN SEA E OF 80 - N OF 67S: NW 5 INCR SECTOR N 7/8 BY 25/1500 DECR NW 4/5 BY 25/0600 PROB OF MIST PROB OF RAIN WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
NORTHER BELLINGSHAUSEN SEA W OF 80 - S OF 67S: NE 7/8 VEER NE 5 BY 26/0900 PROB OF MIST PROB OF SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 5/6 VEER NE 7/8 BY 25/1800 PROB OF MIST PROB OF SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): E 7/9 WITH GUSTS VEER NE 7/8 WITH GUSTS BY 25/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA W OF 40W: VRB 3 INCR N 5/6 WITH GUSTS BY 26/0000 PROB OF MIST PROB OF SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SW 5/6 WITH GUSTS DECR SW 4/3 BY 26/0300 VIS GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SW 5/4 VEER NE 5/6 BY 26/0900 PROB OF SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD=