1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-19, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 471: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST INCR WITH GUST BY 19/1500 BETWEEN 35S-40S 20W-30W
WARNING 470: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SW WITH GUST
BETWEEN 35S-40S 40W-55W
WARNING 469: LOW 951HPA AT 51S 42W MOV SE WEAKENING EXPECTED 55S 30W BY 20/0000
PROVOKES WINDS FORCE 8 FROM SECTOR N WITH GUST BETWEEN 45S-55S AND 30W-40W UNTIL
19/1800
WARNING 468: LOW 951HPA AT 51S 42W MOV SE WEAKENING EXPECTED 55S 30W BY 20/0000
PROVOKES WINDS FORCE 9 FROM SECTOR W WITH GUST IN CENTRAL WEST AREA (40S- 50S
AND 40W- 60W) UNTIL 19/0600
WARNING 465: LOW 951HPA AT 51S 42W MOV SE WEAKENING EXPECTED 55S 30W BY 20/0000
PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST BETWEEN 45S-55S AND 40W-50W UNTIL
19/1500
WARNING 464: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN
PENINSULA DE VALDES COASTS GOLFO DE SAN JORGE COASTS SOUTH PATAGONIA COASTS
UNTIL 19/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
SEA ICE AND ICEBERGS REPORT 181400 UTC
1.SEA ICE LIMIT
5811S 02000W 5659S 02620W 5703S 03212W 5717S 03537W 5755S 03800W 5910S 04435W
5848S 04822W 5830S 05140W 6029S 05612W 6234S 06007W 6332S 06233W 6424S 06716W
2.ICEBERGS GREATER THAN 10NM
A23A 5245S 04020W 32X24NM
A74A 5358S 02817W 27X17NM
A77 5436S 04020W 27X4NM
A76C 6003S 03837W 16X7NM
B15AB 5805S 04604W 11X4NM
A23G 5239S 03841W 11X3NM
3.ICEBERGS SMALLER THAN 10NM
A23I 4952S 03905W 9X6NM
A23J 5125S 03809W 8X2NM
ICEBERG1 4911S 02914W 2X1NM
ICEBERG2 5059S 03457W 3X1NM
ICEBERG3 5517S 04231W 9X2NM
ICEBERG4 5110S 03452W 3X1NM
ICEBERG5 5224S 03856W 7X3NM
ICEBERG6 5119S 04013W 2X2NM
ICEBERG7 5217S 03747W 3X1NM
ICEBERG8 4959S 02344W 4X2NM
ICEBERG9 5222S 03735W 2X1NM
ICEBERG10 5156S 03819W 2X1NM
ICEBERG11 6049S 04529W 3X2NM
ICEBERG12 5124S 03357W 2X1NM
ICEBERG13 5047S 03821W 6X2NM
ICEBERG14 5149S 03840W 3X3NM
ICEBERG15 5321S 03918W 2X2NM
ICEBERG16 5249S 03801W 3X3NM
ICEBERG17 5123S 03831W 2X1NM
ICEBERG18 5159S 03910W 4X2NM
ICEBERG19 5002S 02614W 2X1NM
ICEBERG20 5249S 03846W 3X1NM
ICEBERG21 5245S 03758W 3X1NM
ICEBERG22 5236S 03936W 4X1NM
ICEBERG23 5248S 03924W 2X1NM
ICEBERG24 4943S 03912W 4X4NM
ICEBERG25 5758S 04525W 3X1NM
ICEBERG26 5320S 03913W 2X1NM
4.ICEBERGS AREA
A 5938S 02000W 4500S 02000W 4500S 03510W 5820S 03500W
B 5820S 03500W 4700S 03500W 4730S 04450W 6000S 04500W
C 6000S 04500W 5500S 04500W 5945S 05620W 6200S 05500W
D 6200S 05500W 5945S 05620W 6220S 06716W 6620S 06716W
LOW 951HPA 51S 42W MOV SE WKN EXP 55S 30W BY 20/0000 EXTENDS CFNT AT 53S 38W 50S
29W 40S 39W 35S 48W MOV E ASOCIATED WITH OFNT AT 54S 36W 51S 46W 48S 46W
LOW 1000HPA 41S 26W MOV E NC EXTENDS CFNT AT 41S 25W 35S 29W 30S 34W MOV NE
HIGH 1008HPA 38S 59W MOV NE INTSF EXP 35S 55W BY 19/1200
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-20
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 5/4 WITH GUSTS BACK SECTOR N 3 WITH GUSTS BY 19/0900
AFTERWARDS SECTOR E 4 BY 19/1800 VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR S 6/5 GUST WITH 8 INTENSITY VEER SW 4 BY 19/1200
AFTERWARDS SECTOR E 3/4 BY 19/1800 LOW PROB OF COASTAL SH DURING THE EVENING VIS
MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR S 6 GUST WITH 8 INTENSITY VEER SW 5/4 WITH
GUSTS BY 19/0600 AFTERWARDS S 4 BY 19/1800 VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SW 6/5 GUST WITH 8 INTENSITY BACK SECTOR
S 5/4 BY 19/1500 AFTERWARDS SECTOR E 4 BY 19/2100 VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SW 6 GUST WITH 8 INTENSITY BACK
SECTOR E 4 BY 19/2100 VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SW 8/7 WITH GUSTS DECR 6/4 BY 19/0600
AFTERWARDS VRB BY 19/1800 LOW PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS
MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 8/7 WITH GUSTS DECR 6/5 WITH GUSTS BY
19/0600 AFTERWARDS VRB 4 BY 19/2100 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS
MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): SW 8/7 GUST WITH 8 INTENSITY DECR 6/4 WITH
GUSTS BY 19/0600 PROB OF SH RAIN VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 5/4 PROB OF ISOL RAIN AND SNOW
MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR S 6 GUST WITH 8 INTENSITY VEER SW 6/5 WITH GUSTS
BY 19/1800 PROB OF RAIN AND SNOW MIXTURE VIS POOR TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 8/9 WITH GUSTS PROB OF HVY
RAIN STORMS VIS VERY POOR
E OF 45W: NW 7 GUST WITH 8 INTENSITY BACK SW 6 GUST WITH 8 INTENSITY BY 19/0600
AFTERWARDS W 6 GUST WITH 8 INTENSITY BY 19/1500 PROB OF SH RAIN VIS POOR TO
MODERATE
REST OF THE AREA: SW 7/8 WITH GUSTS DECR 7/6 GUST WITH 8 INTENSITY BY 19/2100
PROB OF SH RAIN VIS POOR TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 6 GUST WITH 8
INTENSITY BACK NW 6/5 GUST WITH 8 INTENSITY BY 19/2100 PROB OF RAIN STORMS
SPELLS OF GOOD WEATHER VIS POOR TO MODERATE
W OF 30 - N OF 45S: NW 7 WITH GUSTS BACK W 6/5 GUST WITH 8 INTENSITY BY 19/1200
PROB OF SH RAIN VIS POOR OCNL MODERATE
REST OF THE AREA: SECTOR N 8 WITH GUSTS BACK W 7 GUST WITH 8 INTENSITY BY
19/1200 PROB OF SH RAIN VIS POOR TO MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR W 9/8 WITH GUSTS DECR
SW 7/6 WITH GUSTS BY 19/0600 PROB OF SH RAIN VIS VERY POOR TO POOR
E OF 50 - S OF 45S: SECTOR E 8 WITH GUSTS DECR SW 7/6 GUST WITH 8 INTENSITY BY
19/1500 PROB OF SH RAIN NXT RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
REST OF THE AREA: SW 7/6 GUST WITH 8 INTENSITY PROB OF SH RAIN NXT RAIN AND
SNOW MIXTURE VIS POOR OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) W OF 30 - N OF 55S: SECTOR N 8 WITH
GUSTS VEER SECTOR W 8/7 WITH GUSTS BY 19/1800 PROB OF SH RAIN VIS VERY POOR TO
POOR
E OF 30 - N OF 55S: SECTOR N 7 GUST WITH 8 INTENSITY PROB OF SH RAIN VIS POOR
REST OF THE AREA: SECTOR E 6 GUST WITH 8 INTENSITY BACK SECTOR N 6/5 WITH GUSTS
BY 19/1500 PROB OF RAIN VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR S 8 WITH
GUSTS DECR SW 7/6 GUST WITH 8 INTENSITY BY 19/1200 PROB OF SH RAIN NXT RAIN AND
SNOW MIXTURE VIS POOR
REST OF THE AREA: SECTOR S 7/6 GUST WITH 8 INTENSITY PROB OF RAIN AND SNOW
MIXTURE VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 5/4 VEER SW 4 BY 19/1800 PROB OF
ISOL RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 18, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1344/2025 STRONG BARIC GRADIENT ON MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV E DEEPENING PROVOKES WINDS FORCE 9 FROM SECTOR S IN 61S-65S 50W-60W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 980HPA 64S 58W MOV E WKN
HIGH 70S 75W MOV N INTSF
171400 UTC 1.SEA ICE LIMIT 5845S 02000W 5840S 02051W 5734S 02600W 5830S 03035W 5842S 03526W 6009S 03712W 6028S 04110W 5927S 04647W 5933S 04854W 6118S 05341W 6334S 06059W 6605S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5247S 04016W 32X24NM A74A 5357S 02830W 27X17NM A77 5436S 04020W 27X4NM A76C 6011S 03842W 16X7NM B15AB 5804S 04548W 11X4NM A23G 5232S 03840W 11X3NM 3.ICEBERGS SMALLER THAN 10NM A23I 4951S 03906W 9X6NM A23J 5125S 03827W 8X2NM ICEBERG1 4951S 03106W 7X1NM ICEBERG2 5102S 03529W 3X1NM ICEBERG3 5517S 04231W 9X2NM ICEBERG4 5110S 03452W 3X1NM ICEBERG5 5224S 03856W 7X3NM ICEBERG6 5119S 04013W 2X2NM ICEBERG7 5217S 03747W 3X1NM ICEBERG8 5001S 02355W 4X2NM ICEBERG9 5222S 03735W 2X1NM ICEBERG10 5156S 03819W 2X1NM ICEBERG11 4928S 03225W 3X1NM ICEBERG12 6049S 04531W 3X2NM ICEBERG13 5124S 03357W 2X1NM ICEBERG14 5047S 03821W 6X2NM ICEBERG15 5149S 03840W 3X3NM ICEBERG16 5321S 03918W 2X2NM ICEBERG17 5249S 03801W 3X3NM ICEBERG18 5123S 03831W 2X1NM ICEBERG19 5159S 03910W 4X2NM ICEBERG20 4957S 02446W 2X1NM ICEBERG21 5249S 03846W 3X1NM ICEBERG22 5245S 03758W 3X1NM ICEBERG23 5236S 03936W 4X1NM ICEBERG24 5248S 03924W 2X1NM ICEBERG25 4943S 03905W 4X4NM ICEBERG26 5758S 04525W 3X1NM ICEBERG27 5320S 03913W 2X1NM 4.ICEBERGS AREA A 4500S 02000W 6000S 02000W 4600S 04000W 6100S 04000W B 6200S 05400W 6100S 04000W 4800S 04000W 6000S 05400W C 5600S 05400W 6200S 05400W 6400S 06716W 6800S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-19
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR S 3/4 VIS GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 4/5 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR S 3/4 VIS GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 8 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : SECTOR N 3/4 VIS GOOD
MARGARITA BAY : SECTOR N 3/4 VIS GOOD
EREBUS Y TERROR GULF : SECTOR S 8 WITH GUSTS PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): VRB 3 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR S 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL VERY POOR=