059
WWST02 SABM 281200
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-28, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 511: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 40S-45S 40W-55W FROM 29/0600
WARNING 510: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 50S-55S AND 20W-30W UNTIL 28/2100
WARNING 508: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SW WITH GUST
BETWEEN 45S-60S AND 40W-60W
WARNING 507: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N
WITH GUST BETWEEN 40S-50S AND 20W-30W UNTIL 28/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 965HPA 54S 28W MOV SE DPN EXTENDS CFNT AT 54S 25W 40S 33W 31S 51W MOV E
CFNT AT 50S 40W 44S 56W MOV E NC
LOW 959HPA 56S 51W MOV NE WKN EXP 49S 36W BY 29/1200 EXTENDS OFNT AT 61S 47W 55S
56W 51S 51W MOV NE
HIGH 1012HPA 36S 57W MOV NE NC EXP 32S 50W BY 29/0000
271400 UTC 1.SEA ICE LIMIT 6133S 02000W 6054S 02325W 6114S 03114W 5916S 03443W
6107S 04321W 6220S 04748W 6054S 05120W 6224S 05801W 6342S 05951W 6348S 06017W
6444S 06422W 6637S 06717W 2.ICEBERGS GREATER THAN 10MN A23A 5303S 04027W 32X24NM
A74A 5902S 02210W 27X13NM A77 5034S 03702W 27X4NM A76C 6001S 03711W 16X7NM B15AB
5812S 04147W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5206S 04329W 9X2NM
ICEBERG2 5322S 03916W 7X3NM ICEBERG3 5159S 04047W 2X2NM ICEBERG4 5135S 03459W
2X1NM ICEBERG5 5240S 03701W 3X1NM ICEBERG6 5311S 04024W 4X1NM ICEBERG7 5217S
04019W 2X1NM ICEBERG8 5352S 04121W 4X1NM ICEBERG9 4938S 03845W 5X4NM ICEBERG10
5014S 03427W 8X2NM ICEBERG11 5227S 03900W 4X2NM ICEBERG12 5003S 02941W 2X1NM
ICEBERG13 5311S 04017W 4X2NM ICEBERG14 5243S 04013W 4X1NM ICEBERG15 5250S 03933W
3X2NM ICEBERG16 5301S 03939W 2X1NM ICEBERG17 5152S 04143W 9X3NM ICEBERG18 5258S
03930W 2X1NM ICEBERG19 5231S 04026W 2X1NM ICEBERG20 5041S 03741W 4X1NM ICEBERG21
5300S 03944W 2X1NM ICEBERG22 6048S 04529W 3X3NM ICEBERG23 6140S 04657W 4X3NM
ICEBERG24 6054S 05223W 7X2NM ICEBERG25 4935S 03845W 2X1NM ICEBERG26 4932S 03741W
3X1NM ICEBERG27 4944S 03902W 3X1NM ICEBERG28 5017S 03714W 4X1NM ICEBERG29 5018S
03708W 3X1NM ICEBERG30 5305S 03930W 2X1NM ICEBERG31 5747S 04052W 4X1NM
4.ICEBERGS AREA A 6200S 02000W 4510S 02000W 4500S 04010W 6127S 04000W B 6127S
04000W 4815S 04000W 5357S 05020W 6238S 04710W C 6238S 06710W 5658S 04919W 6248S
06716W 6818S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-29
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4 BACK SECTOR W BY 29/0600 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR E 5 WITH GUSTS BACK SECTOR S 4 BY 29/0600 VIS
GOOD
URUGUAY SOUTH EAST COASTS: SECTOR E 4/5 BACK SECTOR N 4 BY 29/0600 BACK SECTOR W
4 BY 29/1200 VIS GOOD
MAR DEL PLATA COASTS(36º17S - 38º30S): SECTOR W 4 BACK SECTOR S 5 WITH GUSTS BY
28/2100 VIS GOOD
RINCON BAHIA BLANCA COASTS(38º30S - 41ºS): SECTOR W 4 BACK SECTOR S 5 WITH GUSTS
BY 28/1500 BACK SECTOR N 5/4 WITH GUSTS BY 29/0600 VIS GOOD
PENINSULA DE VALDES COASTS(41ºS - 45ºS): SECTOR S 5 WITH GUSTS BACK SECTOR N BY
28/2100 VIS GOOD
GOLFO DE SAN JORGE COASTS(45ºS - 48ºS): SECTOR S 5 WITH GUSTS BACK VRB BY
28/2100 VIS GOOD
SOUTH PATAGONIA COASTS(48ºS - 54ºS): SECTOR S 7/5 WITH GUSTS BACK VRB 5 WITH
GUSTS BY 28/2100 PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE
FIN DEL MUNDO COASTS(54ºS - 55ºS): SECTOR S 5 WITH GUSTS VEER SECTOR N PROB OF
ISOL RAIN NXT PROB OFHVY RAIN STARTING NIGTH VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SW 7 WITH GUSTS DECR 5/4 BY 28/2100 LOW PROB OF ISOL RAIN
VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR N 7 WITH GUSTS BACK SECTOR W
6 WITH GUSTS PROB OF ISOL RAIN STORMS NXT PROB OF SH STARTING EARLY MORNING VIS
MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF ISOL SH RAIN STARTING EARLY
MORNING VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 8 WITH GUSTS DECR
7/6 WITH GUSTS BY 28/1800 PROB OF ISOL INTERMITTENT RAIN VIS POOR TO MODERATE
REST OF THE AREA: SECTOR N 7 GUST WITH 8 INTENSITY VEER SECTOR W 6/7 GUST WITH
8 INTENSITY BY 29/0000 PROB OF SH RAIN NXT PROB OF SH OF RAIN SH OF SNOW
STARTING NIGTH VIS POOR OCNL MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 55W: SW 7/8 WITH GUSTS PROB OF
ISOL SH RAIN VIS MODERATE TO POOR
REST OF THE AREA: SECTOR S 6/7 WITH GUSTS BACK VRB 5 LOW PROB OF ISOL RAIN
SPELLS OF GOOD WEATHER STARTING EVENING VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55S: SECTOR E 6 WITH GUSTS PROB OF
ISOL RAIN AND SNOW MIXTURE VIS MODERATE
REST OF THE AREA: SECTOR W 7 WITH GUSTS VEER SW PROB OF INTERMITTENT RAIN AND
SNOW MIXTURE VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - S OF 55S: SECTOR S 5/6 WITH
GUSTS PROB OF ISOL RAIN SNOW FALL IMPR STARTING NIGTH VIS MODERATE
REST OF THE AREA: SW 8 WITH GUSTS DECR 7/5 WITH GUSTS BY 29/0300 PROB OF SH
RAIN AND SNOW MIXTURE IMPR STARTING EARLY MORNING VIS POOR TO MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 7/5 WITH GUSTS VEER SECTOR N PROB
OF ISOL RAIN STARTING NIGTH VIS MODERATE
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