METAREA 6 bulletinset


HIGH SEAS FORECAST NORTH 60S
WWST02 SABM 280000

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

2025-12-28, 00:00 UTC.

NATIONAL WEATHER SERVICE

SEA ICE AND ICEBERGS ISSUED BY SHN

PRESSURE HPA

BEAUFORT SCALE WINDS.

PART 1 GALE WARNING:

WARNING 510: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH

GUST BETWEEN 50S-55S 20W-30W FROM 28/0900

WARNING 509: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH

GUST BETWEEN 45S-50S AND 40W-60W

WARNING 508: LOW 959HPA AT 58S 45W MOV N EXPECTED 52S 56W BY 28/2100 WILL

PROVOKE WINDS FORCE 9 FROM SW WITH GUST BETWEEN 50S-60S AND 40W-60W FROM

28/0300

WARNING 507: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N

WITH GUST IN CENTRAL EAST AREA (40S- 50S AND 20W- 40W) UNTIL 28/1800

WARNING 506: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR E WITH

GUST BETWEEN 55S-60S AND 30W-40W UNTIL 28/0900

WARNING 503: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN

FIN DEL MUNDO COASTS ISLAS MALVINAS COASTS DRAKE AREA (55S- 60S AND 60W- 67W)

PART 2 GENERAL SYNOPSIS AT 21:00UTC

SEA ICE AND ICEBERGS REPORT 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

HIGH 1011HPA MAR DEL PLATA COASTS MOV NE WKN EXP 36S 53W BY 28/2100

CFNT AT 42S 38W 41S 40W 37S 45W MOV E

LOW 959HPA 58S 45W MOV N WKN EXP 52S 46W BY 28/2100

PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-29

COASTAL AREAS:

INNER RIO DE LA PLATA: SE 4 VIS GOOD

OUTER RIO DE LA PLATA: SE 4 WITH GUSTS BACK NE 3 BY 28/1500 VIS GOOD

URUGUAY SOUTH EAST COASTS: SE 4 WITH GUSTS VIS GOOD

MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4 DECR VRB 3 BY 28/1200 VIS

GOOD

RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4 BACK SECTOR S BY 28/1500

VIS GOOD

PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 4/5 BACK SECTOR S 5 WITH GUSTS

BY 28/1200 VIS GOOD

GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5 WITH GUSTS BACK SW 6/5 WITH

GUSTS BY 28/0900 VIS MODERATE

SOUTH PATAGONIA COASTS(48S - 54S): SW 7/6 GUST WITH 8 INTENSITY DECR 4 BY

28/2100 PROB OF ISOL RAIN VIS MODERATE TO POOR

FIN DEL MUNDO COASTS(54S - 55S): SW 7/8 WITH GUSTS PROB OF SH IMPR STARTING

EVENING VIS POOR TO MODERATE

ISLAS MALVINAS COASTS: SW 7/8 WITH GUSTS PROB OF SH IMPR STARTING EVENING VIS

POOR TO MODERATE.

OCEANIC AREAS:

NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 6 WITH GUSTS PROB OF RAIN

STARTING NOON VIS MODERATE TO POOR

W OF 30 - E OF 40W: NW 6/5 WITH GUSTS BACK W 5 BY 28/1800 PROB OF SH RAIN

STARTING EARLY MORNING VIS MODERATE TO POOR

REST OF THE AREA: SECTOR S 4 VEER SECTOR W 4/5 BY 28/1200 PROB OF SH RAIN IMPR

STARTING EARLY MORNING VIS MODERATE TO GOOD

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 8 WITH GUSTS BACK

SECTOR W 7 GUST WITH 8 INTENSITY BY 28/1800 PROB OF SH RAIN VIS POOR OCNL VERY

POOR

REST OF THE AREA: SECTOR N 8 WITH GUSTS BACK SECTOR W 7 GUST WITH 8 INTENSITY

BY 28/0900 PROB OF SH RAIN VIS VERY POOR TO POOR

CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR W 5/6 WITH GUSTS PROB

OF SH STARTING EARLY MORNING VIS MODERATE TO POOR

REST OF THE AREA: SECTOR W 7/8 WITH GUSTS PROB OF SH RAIN VIS VERY POOR TO

POOR

SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30 - N OF 55S: SECTOR N 6 WITH

GUSTS BACK SECTOR W 7/8 WITH GUSTS BY 28/0900 PROB OF SH RAIN AND SNOW MIXTURE

VIS VERY POOR TO POOR

S OF 55S: SECTOR W 8/6 WITH GUSTS SH OF SNOW VIS POOR

REST OF THE AREA: SECTOR W 6 WITH GUSTS PROB OF SH OF SNOW VIS POOR

SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR W 6/7 GUST

WITH 8 INTENSITY BACK SW 8 WITH GUSTS BY 28/1500 PROB OF SH RAIN AND SNOW

MIXTURE VIS VERY POOR TO POOR

E OF 50 - S OF 55S: SECTOR W 6 WITH GUSTS VEER SECTOR E WITH GUSTS BY 28/1800

PROB OF SNOW FALL VIS POOR

REST OF THE AREA: SW 8/9 WITH GUSTS PROB OF RAIN SNOW FALL VIS VERY POOR

DRAKE AREA (55S- 60S AND 60W- 67W): SW 7/8 WITH GUSTS DECR 5 BY 28/1800 PROB OF

ISOL SNOW FALL IMPR DURING THE MORNING VIS POOR TO MODERATE

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HIGH SEAS FORECAST SOUTH 60S
WWAA02 SAWB 280000

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

00:00 UTC 28, DECEMBER 2025.

NATIONAL WEATHER SERVICE (NWS)

SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS

PART 1 GALE WARNING:

1491/2025 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E IN 60S-66S 30W-50W UNTIL 28/1800

1492/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV N DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR S IN 60S-63S 50W-60W UNTIL 28/1800

PART 2 GENERAL SYNOPSIS AT 21:00UTC

LOW 960HPA 60S 45W MOV E DPN

RIDGE 60S 75W 65S 70 W 70S 70W MOV E DPN

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 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-29

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 3/5 PROB OF MIST FOG PATCHES VIS GOOD OCNL VERY POOR

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 8 DECR 3 BY 28/1800 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR

MAR DE LA FLOTA COASTS W OF 60W: SW 3/5 VIS GOOD

MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 8 DECR 3 BY 28/1800 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR

GERLACHE STRAIT : SECTOR N 3/4 VIS GOOD

MARGARITA BAY : SECTOR E 3/5 VIS GOOD

EREBUS Y TERROR GULF : SECTOR S 4/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES IMPR TOWARDS MORNING VIS VERY POOR TO MODERATE OCNL GOOD

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 3/4 VEER SECTOR N 5 BY 28/0000 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 3/4 VEER SECTOR N 5 BY 28/0600 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR

NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR E 8 DECR 3 BY 28/1800 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR

SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR=