1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-23, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 477: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 FROM
SECTOR W IN DRAKE AREA (55S- 60S AND 60W- 67W) FROM 23/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
CFNT AT DRAKE AREA (55S- 60S AND 60W- 67W) MOV E
HIGH 1024HPA 38S 51W MOV NE NC EXP 36S 44W BY 23/2100
CFNT AT 53S 28W 52S 32W 51S 39W MOV NE
221400 UTC 1.SEA ICE LIMIT 58 59S 020 13W 57 35S 023 19W 57 55S 027 10W 58 10S
031 16W 59 14S 037 16W 59 42S 040 54W 59 41S 045 13W 59 06S 050 06W 61 06S 054
12W 62 32S 058 03W 63 31S 060 29W 65 55S 067 00W 2.ICEBERGS GREATER THAN 10NM
A23A 52 37S 040 34W 32X24NM A74A 54 08S 027 03W 27X17NM A77 53 59S 041 00W
27X4NM A76C 59 45S 038 33W 16X7NM B15AB 58 08S 046 24W 11X4NM A23G 52 58S 038
37W 11X3NM 3.ICEBERGS SMALLER THAN 10NM A23I 50 21S 038 48W 9X6NM A23J 51 30S
037 23W 8X2NM ICEBERG1 51 04S 034 33W 3X1NM ICEBERG2 55 54S 042 23W 9X2NM
ICEBERG3 51 54S 034 09W 3X1NM ICEBERG4 52 46S 038 49W 7X3NM ICEBERG5 50 54S 039
41W 2X2NM ICEBERG6 49 34S 023 14W 4X2NM ICEBERG7 52 26S 037 46W 2X1NM ICEBERG8
60 48S 045 28W 3X2NM ICEBERG9 51 08S 038 13W 6X2NM ICEBERG10 52 05S 038 45W
3X3NM ICEBERG11 53 08S 040 53W 2X2NM ICEBERG12 53 19S 038 08W 3X3NM ICEBERG13 51
31S 037 45W 2X1NM ICEBERG14 51 33S 039 11W 4X2NM ICEBERG15 49 53S 025 14W 2X1NM
ICEBERG16 53 03S 038 56W 3X1NM ICEBERG17 53 07S 037 43W 3X1NM ICEBERG18 52 42S
039 55W 4X1NM ICEBERG19 50 07S 039 07W 4X4NM ICEBERG20 57 58S 045 25W 3X1NM
ICEBERG21 53 07S 040 44W 2X1NM ICEBERG22 49 58S 039 07W 2X1NM ICEBERG23 49 55S
039 08W 2X1NM ICEBERG24 53 11S 040 50W 2X1NM ICEBERG25 53 14S 040 32W 2X1NM
4.ICEBERGS AREA A 59 38S 020 00W 46 00S 020 00W 46 00S 031 00W 58 00S 031 00W B
58 00S 031 00W 46 00S 031 00W 47 00S 038 00W 59 00S 038 00W C 47 00S 038 00W 59
00S 038 00W 62 00S 067 16W 66 00S 067 16W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-24
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 VIS GOOD
OUTER RIO DE LA PLATA: NE 3/4 VIS GOOD
URUGUAY SOUTH EAST COASTS: NE 3/4 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NE 4/5 WITH GUSTS VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5/6 WITH GUSTS VIS GOOD TO
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS VIS GOOD OCNL
MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/6 WITH GUSTS BACK SECTOR S 4
BY 23/1500 PROB OF ISOL RAIN DURING THE EARLY MORNING VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): NW 6 WITH GUSTS BACK SECTOR W 6/7 GUST WITH
8 INTENSITY PROB OF RAIN IMPR STARTING EVENING VIS POOR TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 7 GUST WITH 8 INTENSITY PROB OF RAIN
IMPR STARTING EVENING VIS POOR TO MODERATE
ISLAS MALVINAS COASTS: NW 6 WITH GUSTS BACK W 6 WITH GUSTS BY 23/1500 PROB OF
RAIN STARTING EARLY MORNING IMPR STARTING EVENING VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 4 PROB OF SH ISOL RAIN VIS
MODERATE
REST OF THE AREA: SECTOR S 4 VRB 3 BY 23/0600 SECTOR N 4 BY 23/2100 VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 5/4 WITH GUSTS PROB
OF ISOL RAIN VIS MODERATE
REST OF THE AREA: SW 4 PROB OF SH RAIN AND SNOW MIXTURE VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SW 4 VEER NW 5/6 BY 23/1800
PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: NW 4 INCR 6 WITH GUSTS BY 23/1200 VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 4 PROB OF ISOL SNOW FALL
VIS MODERATE
REST OF THE AREA: SW 4 VEER NW 4/5 BY 23/1500 PROB OF ISOL SNOW FALL IMPR
STARTING EARLY MORNING VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: NW 4/5 WITH GUSTS INCR NW 6
WITH GUSTS BY 23/1500 PROB OF RAIN AND SNOW MIXTURE STARTING EARLY MORNING VIS
MODERATE TO POOR
REST OF THE AREA: NW 5/6 WITH GUSTS BACK SECTOR W 7 GUST WITH 8 INTENSITY BY
23/1200 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/8 WITH GUSTS PROB OF RAIN IMPR
STARTING EVENING VIS VERY POOR TO MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 23, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1356/2025 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E IN 65S-70S 70W-90W
1357/2025 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E IN 63S-65S 62W-70W FROM 23/1200
1358/2025 STRONG BARIC GRADIENT MARGARITA BAY MOV E DEEPENING PROVOKES WINDS FORCE 9 FROM SECTOR E IN 65S-70S 65W-70W
1359/2025 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E IN 61S-63S 60W-70W UNTIL 23/1800
1360/2025 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SE IN 61S-63S 50W-60W FROM 23/0900
1361/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SE IN 60S-61S 50W-60W FROM 23/1500
1362/2025 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR S IN 63S-66S 55W-60W FROM 23/1800
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 975HPA 65S 75W MOV E DPN EXTENDS CFNT AT 65S 75W 62S 70W 60S 70W
LOW 992HPA 67S 55W MOV SE DPN
RIDGE 60S 45W 65S 40W 70S 40W MOV E WKN
221400 UTC 1.SEA ICE LIMIT 58 59S 020 13W 57 35S 023 19W 57 55S 027 10W 58 10S 031 16W 59 14S 037 16W 59 42S 040 54W 59 41S 045 13W 59 06S 050 06W 61 06S 054 12W 62 32S 058 03W 63 31S 060 29W 65 55S 067 00W 2.ICEBERGS GREATER THAN 10NM A23A 52 37S 040 34W 32X24NM A74A 54 08S 027 03W 27X17NM A77 53 59S 041 00W 27X4NM A76C 59 45S 038 33W 16X7NM B15AB 58 08S 046 24W 11X4NM A23G 52 58S 038 37W 11X3NM 3.ICEBERGS SMALLER THAN 10NM A23I 50 21S 038 48W 9X6NM A23J 51 30S 037 23W 8X2NM ICEBERG1 51 04S 034 33W 3X1NM ICEBERG2 55 54S 042 23W 9X2NM ICEBERG3 51 54S 034 09W 3X1NM ICEBERG4 52 46S 038 49W 7X3NM ICEBERG5 50 54S 039 41W 2X2NM ICEBERG6 49 34S 023 14W 4X2NM ICEBERG7 52 26S 037 46W 2X1NM ICEBERG8 60 48S 045 28W 3X2NM ICEBERG9 51 08S 038 13W 6X2NM ICEBERG10 52 05S 038 45W 3X3NM ICEBERG11 53 08S 040 53W 2X2NM ICEBERG12 53 19S 038 08W 3X3NM ICEBERG13 51 31S 037 45W 2X1NM ICEBERG14 51 33S 039 11W 4X2NM ICEBERG15 49 53S 025 14W 2X1NM ICEBERG16 53 03S 038 56W 3X1NM ICEBERG17 53 07S 037 43W 3X1NM ICEBERG18 52 42S 039 55W 4X1NM ICEBERG19 50 07S 039 07W 4X4NM ICEBERG20 57 58S 045 25W 3X1NM ICEBERG21 53 07S 040 44W 2X1NM ICEBERG22 49 58S 039 07W 2X1NM ICEBERG23 49 55S 039 08W 2X1NM ICEBERG24 53 11S 040 50W 2X1NM ICEBERG25 53 14S 040 32W 2X1NM 4.ICEBERGS AREA A 59 38S 020 00W 46 00S 020 00W 46 00S 031 00W 58 00S 031 00W B 58 00S 031 00W 46 00S 031 00W 47 00S 038 00W 59 00S 038 00W C 47 00S 038 00W 59 00S 038 00W 62 00S 067 16W 66 00S 067 16W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-24
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 3/4 BACK SECTOR W 5 BY 23/0600 PROB OF SNOW FALL PROB OF MIST FOG PATCHES SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR OCNL MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 3/4 VEER SE 8 BY 23/1500 PROB OF SNOW FALL PROB OF MIST FOG PATCHES VIS POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR E 8 DECR 3 BY 23/1800 PROB OF SNOW FALL PROB OF MIST FOG PATCHES SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR OCNL MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 3/4 VEER SE 8 BY 23/0900 PROB OF SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : SECTOR E 4/5 INCR 8 BY 23/1200 PROB OF ISOL SNOW FALL PROB OF MIST IMPR TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : E 8 PROB OF ISOL SNOW FALL VIS GOOD OCNL MODERATE
EREBUS Y TERROR GULF : SECTOR S 3/5 INCR 8 BY 23/1800 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 3/5 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR N 4/5 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): VRB 3 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=