1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-26, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 480: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 WITH GUST BETWEEN
55S-60S 50W-40W FROM 26/2100
WARNING 479: LOW 990HPA AT 58S 78W MOV E DEEPENING EXPECTED 58S 55W BY 27/0000
WILL PROVOKE WINDS FORCE 8 AROUND ITSELF WITH GUST IN FIN DEL MUNDO COASTS DRAKE
AREA (55S- 60S AND 60W- 67W) BETWEEN 55S-60S AND 60W-50W FROM 26/1500
WARNING 478: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 WITH GUST BETWEEN
40S-50S AND 30W-20W UNTIL 26/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
SEA ICE AND ICEBERGS REPORT 251400 UTC
1.SEA ICE LIMIT
69 24S 020 00W 65 38S 053 35W 62 48S 044 54W 62 25S 031 58W 62 09S 020 48W 63
10S 059 21W
64 21S 063 51W 57 00S 031 43W 58 15S 049 42W 58 42S 052 57W 60 28S 055 27W 61
56S 067 16W
2.ICEBERGS GREATER THAN 10NM
A23A 52 28S 040 30W 32X24NM
A74A 54 20S 026 37W 27X17NM
A77 53 48S 039 56W 27X4NM
A76C 59 35S 038 35W 16X7NM
B15AB 58 07S 046 27W 11X4NM
A23G 53 09S 038 28W 11X3NM
3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 51 25S 034 34W 3X1NM
ICEBERG2 55 54S 041 45W 9X2NM
ICEBERG3 51 54S 034 09W 3X1NM
ICEBERG4 52 47S 038 56W 7X3NM
ICEBERG5 49 07S 022 44W 4X2NM
ICEBERG6 52 08S 037 55W 2X1NM
ICEBERG7 60 48S 045 29W 3X2NM
ICEBERG8 51 08S 037 34W 6X2NM
ICEBERG9 52 11S 038 53W 3X3NM
ICEBERG10 52 42S 041 45W 2X2NM
ICEBERG11 53 28S 038 39W 3X3NM
ICEBERG12 51 38S 037 04W 2X1NM
ICEBERG13 51 28S 039 21W 4X2NM
ICEBERG14 50 20S 023 45W 2X1NM
ICEBERG15 53 02S 037 42W 3X1NM
ICEBERG16 52 47S 038 59W 4X1NM
ICEBERG17 52 49S 041 47W 2X1NM
ICEBERG18 50 04S 038 35W 2X1NM
ICEBERG19 50 13S 038 45W 2X1NM
ICEBERG20 52 44S 041 36W 2X1NM
ICEBERG21 52 53S 041 39W 2X1NM
ICEBERG22 52 38S 041 16W 3X1NM
ICEBERG23 53 49S 040 59W 2X1NM
ICEBERG24 52 43S 041 39W 2X1NM
ICEBERG25 52 50S 041 55W 2X2NM
ICEBERG26 50 53S 021 44W 3X1NM
ICEBERG27 49 38S 028 37W 3X1NM
ICEBERG28 52 18S 041 18W 2X1NM
ICEBERG29 52 21S 041 31W 2X1NM
ICEBERG30 52 37S 041 39W 2X1NM
ICEBERG31 56 01S 041 57W 4X1NM
ICEBERG32 50 27S 038 49W 9X6NM
ICEBERG33 51 31S 036 54W 8X2NM
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 64 00S 057 00W 59 00S 057 00W
D 64 00S 057 00W 68 30S 067 16W 64 00S 067 16W 61 00S 057 00W
LOW 993HPA 47S 29W MOV SE DPN EXP BY 27/0000 EXTENDS CFNT AT 43S 34W 41S 38W 39S
46W MOV NE
HIGH 1017HPA 42S 54W MOV NE INTSF EXP 37S 40W BY 27/0000 EXTENDS RIDGE AT 46S
58W 51S 62W 52S 64W
LOW 990HPA 58S 78W MOV E DPN EXP BY 27/0000
STATIONARY FRONT MAR DEL PLATA COASTS
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-27
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 5 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR E 5/6 WITH GUSTS VIS GOOD
URUGUAY SOUTH EAST COASTS: NE 5/6 WITH GUSTS VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 5/6 WITH GUSTS BACK SECTOR N BY
26/0900 PROB OF MIST DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR E 6 WITH GUSTS BACK SECTOR N
BY 26/0900 PROB OF ISOL STORMS STARTING EVENING VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6 GUST WITH 8 INTENSITY BACK
SECTOR S BY 26/1800 PROB OF ISOL RAIN STORMS STARTING EVENING VIS MODERATE OCNL
GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6 WITH GUSTS BACK SECTOR W BY
26/1200 AFTERWARDS SECTOR S 7 GUST WITH 8 INTENSITY BY 26/2100 LOW PROB OF ISOL
RAIN IMPR TOWARDS EARLY MORNING VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S) N OF 51S: SECTOR N 6 WITH GUSTS BACK SECTOR
W BY 26/0900 AFTERWARDS SECTOR S 7 GUST WITH 8 INTENSITY BY 26/1500 LOW PROB OF
ISOL RAIN VIS MODERATE TO POOR
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR N 6 WITH GUSTS
TEMPO BACK SECTOR S BY 26/0900 VEER SECTOR W 7 GUST WITH 8 INTENSITY BY 26/1500
PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
FIN DEL MUNDO COASTS(54S - 55S): NW 6 WITH GUSTS BACK W 7 GUST WITH 8
INTENSITY BY 26/0900 INCR 8 WITH GUSTS BY 26/1500 PROB OF HVY RAIN SPELLS OF
GOOD WEATHER VIS VERY POOR TO POOR
ISLAS MALVINAS COASTS: SECTOR W 5 WITH GUSTS VEER SECTOR N 6 WITH GUSTS BY
26/0300 BACK SECTOR W BY 26/1500 PROB OF ISOL RAIN STARTING EARLY MORNING IMPR
TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 6 WITH GUSTS BACK SECTOR S BY
26/1800 PROB OF ISOL RAIN STORMS STARTING EARLY MORNING VIS GOOD TO MODERATE
W OF 30 - E OF 50W: SECTOR W 6/5 WITH GUSTS BACK SECTOR S BY 26/0600 AFTERWARDS
VRB 4 BY 26/2300 PROB OF ISOL RAIN IMPR STARTING EVENING VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR E 5 WITH GUSTS BACK SECTOR N 6 WITH GUSTS BY 26/0900
LOW PROB OF DRIZZLE IMPR TOWARDS EARLY MORNING VIS GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: NW 8 WITH GUSTS BACK SECTOR
W 6 WITH GUSTS BY 26/0900 PROB OF ISOL RAIN VIS VERY POOR TO POOR OCNL
MODERATE
W OF 30 - N OF 45S: NW 7 GUST WITH 8 INTENSITY BACK SW 6 WITH GUSTS BY 26/0300
VEER W 4 BY 26/2300 PROB OF ISOL RAIN IMPR STARTING EVENING VIS POOR TO MODERATE
OCNL GOOD
REST OF THE AREA: SECTOR W 6 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE TO
POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR S 5 WITH
GUSTS DECR VRB 4 BY 26/0900 INCR SECTOR N 6 WITH GUSTS BY 26/2100 LOW PROB OF
ISOL RAIN IMPR TOWARDS EARLY MORNING VIS MODERATE TO GOOD
E OF 50 - S OF 45S: SECTOR W 6 WITH GUSTS VEER NW 7/8 GUST WITH 8 INTENSITY BY
26/2100 PROB OF RAIN STORMS STARTING EVENING VIS MODERATE TO VERY POOR
W OF 50 - N OF 45S: SECTOR N 5/6 WITH GUSTS INCR 7 GUST WITH 8 INTENSITY BY
26/1500 VIS GOOD TO POOR
REST OF THE AREA: SECTOR W 5 VEER SECTOR N 7 GUST WITH 8 INTENSITY BY 26/0300
BACK SECTOR W BY 26/2100 PROB OF RAIN STORMS STARTING EVENING VIS GOOD TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR W 7/6 GUST WITH 8
INTENSITY PROB OF RAIN AND SNOW MIXTURE VIS POOR TO MODERATE
E OF 30 - S OF 55S: NW 5/6 WITH GUSTS BACK SW 5 BY 26/1500 PROB OF RAIN AND
SNOW MIXTURE VIS POOR TO MODERATE
REST OF THE AREA: SW 6/5 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS POOR TO
MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR W 6 WITH
GUSTS VEER SECTOR N 7 GUST WITH 8 INTENSITY BY 26/1800 PROB OF ISOL RAIN VIS
MODERATE TO VERY POOR
E OF 50 - S OF 55S: SW 7/6 GUST WITH 8 INTENSITY VEER SECTOR E BY 26/2100 PROB
OF RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS VERY POOR TO POOR
W OF 50 - N OF 55S: SECTOR W 5/6 WITH GUSTS VEER SECTOR N BY 26/0900 BACK
SECTOR W BY 26/1800 PROB OF ISOL RAIN STARTING EARLY MORNING VIS GOOD TO POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS VEER SECTOR E BY 26/0900 BACK SECTOR W
8 WITH GUSTS BY 26/2300 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE TO VERY
POOR
DRAKE AREA (55S- 60S AND 60W- 67W) N OF 57S: SECTOR N 5/6 WITH GUSTS BACK SECTOR
W 8 WITH GUSTS BY 26/1500 PROB OF RAIN VIS MODERATE TO VERY POOR
REST OF THE AREA: SECTOR W 5 VEER SECTOR E 6 WITH GUSTS BY 26/0900 VEER SECTOR
S 8 WITH GUSTS BY 26/2100 PROB OF RAIN AND SNOW MIXTURE STARTING EARLY MORNING
VIS MODERATE TO VERY POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 26, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 987HPA 67S 50W
LOW 980HPA 67S 80W MOV E DPN
251400 UTC 1.SEA ICE LIMIT 69 24S 020 00W 65 38S 053 35W 62 48S 044 54W 62 25S 031 58W 62 09S 020 48W 63 10S 059 21W 64 21S 063 51W 57 00S 031 43W 58 15S 049 42W 58 42S 052 57W 60 28S 055 27W 61 56S 067 16W 2.ICEBERGS GREATER THAN 10NM A23A 52 28S 040 30W 32X24NM A74A 54 20S 026 37W 27X17NM A77 53 48S 039 56W 27X4NM A76C 59 35S 038 35W 16X7NM B15AB 58 07S 046 27W 11X4NM A23G 53 09S 038 28W 11X3NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 51 25S 034 34W 3X1NM ICEBERG2 55 54S 041 45W 9X2NM ICEBERG3 51 54S 034 09W 3X1NM ICEBERG4 52 47S 038 56W 7X3NM ICEBERG5 49 07S 022 44W 4X2NM ICEBERG6 52 08S 037 55W 2X1NM ICEBERG7 60 48S 045 29W 3X2NM ICEBERG8 51 08S 037 34W 6X2NM ICEBERG9 52 11S 038 53W 3X3NM ICEBERG10 52 42S 041 45W 2X2NM ICEBERG11 53 28S 038 39W 3X3NM ICEBERG12 51 38S 037 04W 2X1NM ICEBERG13 51 28S 039 21W 4X2NM ICEBERG14 50 20S 023 45W 2X1NM ICEBERG15 53 02S 037 42W 3X1NM ICEBERG16 52 47S 038 59W 4X1NM ICEBERG17 52 49S 041 47W 2X1NM ICEBERG18 50 04S 038 35W 2X1NM ICEBERG19 50 13S 038 45W 2X1NM ICEBERG20 52 44S 041 36W 2X1NM ICEBERG21 52 53S 041 39W 2X1NM ICEBERG22 52 38S 041 16W 3X1NM ICEBERG23 53 49S 040 59W 2X1NM ICEBERG24 52 43S 041 39W 2X1NM ICEBERG25 52 50S 041 55W 2X2NM ICEBERG26 50 53S 021 44W 3X1NM ICEBERG27 49 38S 028 37W 3X1NM ICEBERG28 52 18S 041 18W 2X1NM ICEBERG29 52 21S 041 31W 2X1NM ICEBERG30 52 37S 041 39W 2X1NM ICEBERG31 56 01S 041 57W 4X1NM ICEBERG32 50 27S 038 49W 9X6NM ICEBERG33 51 31S 036 54W 8X2NM 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 64 00S 057 00W 59 00S 057 00W D 64 00S 057 00W 68 30S 067 16W 64 00S 067 16W 61 00S 057 00W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-27
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 3/4 VEER SECTOR E PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 8 DECR 4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: VRB 3 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : NE 3/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
MARGARITA BAY : NE 3/5 VIS GOOD
EREBUS Y TERROR GULF : SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS GOOD TO MODERATE OCNL VERY POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SW 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): SECTOR E 3/4 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=