394
WWST02 SABM 271200
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-27, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 509: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 45S-50S 40W-60W FROM 28/0000
WARNING 508: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 9 FROM SW WITH GUST
BETWEEN 50S-60S 50W-60W FROM 28/0000
WARNING 507: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH
GUST IN CENTRAL EAST AREA (40S- 50S AND 20W- 40W) FROM 27/1500
WARNING 506: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 FROM SECTOR E
WITH GUST BETWEEN 55S-60S AND 20W-40W FROM 27/2100
WARNING 505: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 WITH GUST
BETWEEN 40S-50S AND 40W-50W
WARNING 503: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN FIN DEL MUNDO COASTS ISLAS MALVINAS COASTS DRAKE AREA (55S- 60S AND 60W-
67W)
PART 2 GENERAL SYNOPSIS AT 09:00UTC
261400 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 5302S 04029W 32X24NM
A74A 5902S 02210W 27X13NM A77 5004S 03709W 27X4NM A76C 5956S 03714W 16X7NM B15AB
5803S 04149W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5220S 04232W 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 4945S 03843W 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 6139S 04700W 4X3NM
ICEBERG24 6055S 05223W 7X2NM ICEBERG25 4935S 03845W 2X1NM ICEBERG26 4932S 03741W
3X1NM ICEBERG27 4955S 03854W 3X1NM ICEBERG28 5017S 03714W 4X1NM ICEBERG29 5018S
03708W 3X1NM ICEBERG30 5305S 03930W 2X1NM 4.ICEBERGS AREA A6202S02000W
4352S02000W 4449S03951W 6133S04005W B6133S04005W 4449S03951W 5907S05814W
6221S05832W C6221S05852W 5907S05814W 6443S06716W 6832S06716W
LOW 972HPA 55S 47W MOV E DPN EXP 55S 27W BY 28/1200 EXTENDS CFNT AT 55S 47W 48S
48W 44S 55W MOV E EXP 55S 27W 46S 26W 41S 35W BY 28/1200
LOW 970HPA 58S 53W MOV NE DPN EXP 55S 47W BY 28/1200 EXTENDS OFNT AT 56S 44W 63S
59W 55S 62W
CFNT AT 45S 49W 40S 53W 37S 57W MOV NE EXP 42S 32W 36S 44W 34S 50W BY 28/1200
HIGH 1020HPA 35S 35W MOV E WKN EXTENDS RIDGE AT 35S 35W 45S 30W 54S 29W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-28
COASTAL AREAS:
INNER RIO DE LA PLATA: VRB 3 VEER SECTOR E 4/5 BY 27/2100 DECR 4/3 BY 28/0300
VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR W 3/4 BACK SECTOR S 5/4 BY 27/1800 BACK SECTOR E
4/3 BY 28/0900 VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR N 4/5 BACK SE BY 27/1800 PROB OF ISOL RAIN
STORMS IMPR STARTING NIGTH VIS MODERATE OCNL GOOD
MAR DEL PLATA COASTS(36º17S - 38º30S): SECTOR S 3/4 NXT VRB BY 28/0000 VEER
SECTOR W BY 28/0600 VIS GOOD
RINCON BAHIA BLANCA COASTS(38º30S - 41ºS): SECTOR S 4/5 WITH GUSTS VEER VRB 4 BY
27/1800 BACK SECTOR N BY 28/0300 VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41ºS - 45ºS): SW 5 WITH GUSTS VEER VRB 4 BY 27/2100
BACK SW 5/4 BY 28/0900 VIS GOOD
GOLFO DE SAN JORGE COASTS(45ºS - 48ºS): SECTOR S 4/5 WITH GUSTS VIS GOOD OCNL
MODERATE
SOUTH PATAGONIA COASTS(48ºS - 54ºS): SECTOR W 6/7 WITH GUSTS PROB OF SH RAIN VIS
POOR
FIN DEL MUNDO COASTS(54ºS - 55ºS): SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF
RAIN SPELLS OF GOOD WEATHER VIS VERY POOR
ISLAS MALVINAS COASTS: SECTOR W 6/7 GUST WITH 8 INTENSITY BACK SW GUST WITH 8
INTENSITY BY 28/0600 PROB OF RAIN NXT PROB OF SH VIS VERY POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 5/4 VEER SECTOR N 6/6 WITH
GUSTS BY 27/1800 PROB OF RAIN STORMS STARTING NIGTH VIS GOOD TO POOR
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS BACK SECTOR S 4/3 BY 27/2100 VEER
SECTOR W BY 28/0900 PROB OF RAIN STORMS IMPR STARTING EVENING VIS POOR TO GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 6/5 WITH GUSTS VEER SECTOR N
6/8 WITH GUSTS BY 27/1500 PROB OF RAIN STORMS STARTING EVENING VIS VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) NE OF THE REGION: SECTOR N 7/8 WITH
GUSTS BACK SW 5 WITH GUSTS BY 27/1500 VEER SECTOR W 5/6 WITH GUSTS BY 28/0300
PROB OF STORMS IMPR STARTING EVENING VIS VERY POOR
SE OF THE REGION: SECTOR N 7/8 WITH GUSTS BACK SECTOR W 6/7 GUST WITH 8
INTENSITY BY 27/1800 INCR 7/8 WITH GUSTS BY 28/0300 PROB OF RAIN STORMS DURING
THE MORNING NXT PROB OF RAIN STORMS STARTING NIGTH VIS VERY POOR
NW OF THE REGION: SECTOR S 5/4 VEER SECTOR W BY 27/1800 VIS GOOD OCNL
MODERATE
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS INCR 7/8 WITH GUSTS BY 28/0000 PROB
OF ISOL RAIN STORMS STARTING EVENING VIS VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55S: VRB 4 VEER NE 6/7 WITH GUSTS
BY 27/1500 VEER SECTOR E 7/8 WITH GUSTS BY 27/2100 PROB OF HVY RAIN VIS VERY
POOR
E OF 30W - N OF 55S: SECTOR W 5/4 VEER NE 5/6 WITH GUSTS BY 28/0000 PROB OF HVY
RAIN STARTING EVENING VIS MODERATE TO VERY POOR
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS BACK SECTOR W WITH GUSTS BY 27/2100
DECR 5/4 BY 28/1200 PROB OF HVY RAIN IMPR STARTING EVENING NEXT WORSENING
TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W - N OF 55S: SECTOR N 6/7 WITH
GUSTS BACK SECTOR W WITH GUSTS BY 27/1500 PROB OF RAIN SPELLS OF GOOD WEATHER
VIS VERY POOR
E OF 50W - S OF 55S: SECTOR N 6/5 WITH GUSTS BACK SECTOR W 7/6 WITH GUSTS BY
27/1800 VEER NE 5 WITH GUSTS BY 28/0900 PROB OF RAIN SNOW FALL VIS VERY POOR
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS BACK SW 8/9 WITH GUSTS BY 28/0000
PROB OF RAIN SNOW FALL VIS VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/8 WITH GUSTS BACK SECTOR S 7/6
GUST WITH 8 INTENSITY BY 27/2100 PROB OF RAIN AND SNOW MIXTURE IMPR STARTING
NIGTH VIS VERY POOR
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