1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-05-09, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 179: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 WITH GUST
BETWEEN 40S-55S AND 20W-30W FROM 09/1800 UNTIL 10/0600
WARNING 178: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 WITH GUST
BETWEEN 35S-40S AND 20W-40W
WARNING 177: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
BETWEEN 55S-60S AND 20W-50W UNTIL 10/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 992HPA 54S 68W MOV SE WKN EXP 58S 58W BY 10/1200 EXTENDS CFNT AT 44S 65W 48S
66W 53S 67W MOV E
LOW 1002HPA 46S 55W MOV NE WKN EXTENDS CFNT AT 40S 55W 42S 52W 45S 53W MOV NE
LOW 1002HPA 40S 37W MOV SE DPN EXTENDS STATIONARY FRONT AT 35S 49W 37S 43W 40S
37W
STRONG BARIC GRADIENT 55S 60W 20S 50W MOV E
081400 UTC 1.SEA ICE LIMIT 6150S 02000W 6238S 02437W 6331S 02941W 6350S 03527W
6207S 03654W 6239S 04218W 6253S 04815W 6348S 05034W 6347S 05403W 6301S 05807W
6359S 06331W 6602S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5448S 03902W 40X32NM
A76C 6101S 04826W 16X7NM A74A 6057S 05136W 30X18NM A77 6353S 05456W 27X4NM A23C
5547S 03439W 10X5NM 3.ICEBERGS SMALLER THAN 10NM A80A 6129S 05217W 9X7NM
ICEBERG1 6109S 05017W 9X3NM ICEBERG2 5525S 03543W 2X1NM ICEBERG3 6056S 03844W
3X1NM ICEBERG4 5214S 03610W 7X1NM ICEBERG5 6200S 03803W 2X1NM ICEBERG6 5515S
03333W 3X1NM ICEBERG7 5626S 03537W 4X1NM ICEBERG8 5529S 03725W 2X1NM ICEBERG9
5232S 03709W 6X2NM ICEBERG10 6056S 04854W 6X5NM ICEBERG11 6129S 04840W 3X1NM
ICEBERG12 6156S 05103W 3X1NM ICEBERG13 6144S 04920W 2X1NM ICEBERG14 6218S 04301W
7X2NM ICEBERG15 6328S 05418W 6X2NM ICEBERG16 6421S 05540W 4X2NM ICEBERG17 5220S
03650W 4X1NM ICEBERG18 5337S 04018W 2X1NM ICEBERG19 6121S 04904W 2X1NM ICEBERG20
6127S 04856W 2X1NM ICEBERG21 5223S 03642W 3X1NM 4.ICEBERGS AREA A: 5200S 02000W
4800S 02000W 4900S 04300W 5900S 04300W B: 6300S 02000W 5200S 02000W 5500S 05000W
6500S 05000W C: 5500S 05000W 6500S 05000W 6830S 06716W 6030S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-05-10
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4/3 BACK SECTOR W 4 WITH GUSTS BY 09/1800 VIS
GOOD
OUTER RIO DE LA PLATA: SECTOR S 5/3 BACK SECTOR W 6 WITH GUSTS BY 09/1800 PROB
OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 4/3 WITH GUSTS BACK SECTOR W 5 WITH GUSTS BY
09/1800 PROB OF DRIZZLE DURING THE MORNING VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 4/6 WITH GUSTS PROB OF SH
STARTING EVENING VIS GOOD TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 5/6 WITH GUSTS BACK SECTOR S
7 WITH GUSTS BY 09/1800 PROB OF SH TOWARDS THE END OF THE PERIOD IMPR VIS
MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SW 7/5 WITH GUSTS PROB OF RAIN STARTING
NIGTH IMPR VIS POOR TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 6/5 WITH GUSTS VEER SECTOR N 4 BY
10/0300 PROB OF ISOL RAIN DURING THE EVENING IMPR VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SW 6/5 WITH GUSTS VEER SECTOR N BY 10/0300
PROB OF ISOL RAIN DURING THE EVENING IMPR VIS MODERATE TO GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 6 WITH GUSTS BACK SECTOR W 5 WITH
GUSTS BY 09/1800 PROB OF ISOL RAIN TOWARDS NIGTH IMPR VIS MODERATE TO GOOD
ISLAS MALVINAS COASTS: SECTOR N 5 WITH GUSTS BACK SECTOR W 4 WITH GUSTS BY
10/0300 PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE TO
GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: NW 8 WITH GUSTS HVY RAIN VIS VERY
POOR
W OF 40 - E OF 50W: SECTOR S 4/5 WITH GUSTS VEER SECTOR W 7 WITH GUSTS BY
10/0300 RAIN SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
REST OF THE AREA: SW 5/7 WITH GUSTS PROB OF ISOL SH STORMS TOWARDS EVENING VIS
GOOD TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: NW 7/8 WITH GUSTS
BACK SECTOR S 5 WITH GUSTS BY 09/2100 HVY RAIN VIS VERY POOR TO POOR
W OF 30 - N OF 45S: SECTOR S 7 WITH GUSTS BACK SECTOR E 5 WITH GUSTS BY 09/1500
HVY RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
REST OF THE AREA: SECTOR W 5 WITH GUSTS PROB OF ISOL SNOW FALL VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) S OF 45S: SECTOR E 5 WITH GUSTS PROB
OF ISOL SH RAIN VIS MODERATE
W OF 50 - N OF 45S: SECTOR W 5/7 WITH GUSTS DECR BY 10/0600 PROB OF RAIN
TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 4 WITH GUSTS BACK SECTOR S BY 09/1500 PROB OF ISOL
SH RAIN VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55S: SECTOR W 8/7 WITH GUSTS PROB
OF RAIN RAIN AND SNOW MIXTURE SNOW FALL VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE SNOW
FALL VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55 - E OF 50W: SW 8/7 WITH GUSTS
PROB OF SNOW FALL TOWARDS THE END OF THE PERIOD IMPR VIS VERY POOR TO POOR
N OF 55 - E OF 50W: SW 6/5 WITH GUSTS PROB OF SNOW FALL TOWARDS THE END OF THE
PERIOD IMPR VIS POOR TO MODERATE
REST OF THE AREA: SECTOR N 4/5 WITH GUSTS PROB OF ISOL RAIN SNOW FALL TOWARDS
THE END OF THE PERIOD IMPR VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 6/5 WITH GUSTS BACK SECTOR W BY
09/1800 DECR BY 10/0300 PROB OF ISOL RAIN VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 09, MAY 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
504/2025 STRONG BARIC GRADIENT PROVOKES WINDS FORCE 9 FROM NE WITH GUST IN NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA
505/2025 LOW 961HPA AT 62S 38W MOV NE PROVOKES WINDS FORCE 8 AROUND ITSELF WITH GUST IN NORTHERN WEDDELL SEA
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 961HPA 62S 38W MOV NE
RIDGE 60S 58W 65S 58W MOV E
LOW 960HPA 64S 90W MOV S EXP 70S 90W BY 09/1800
081400 UTC 1.SEA ICE LIMIT 6150S 02000W 6238S 02437W 6331S 02941W 6350S 03527W 6207S 03654W 6239S 04218W 6253S 04815W 6348S 05034W 6347S 05403W 6301S 05807W 6359S 06331W 6602S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5448S 03902W 40X32NM A76C 6101S 04826W 16X7NM A74A 6057S 05136W 30X18NM A77 6353S 05456W 27X4NM A23C 5547S 03439W 10X5NM 3.ICEBERGS SMALLER THAN 10NM A80A 6129S 05217W 9X7NM ICEBERG1 6109S 05017W 9X3NM ICEBERG2 5525S 03543W 2X1NM ICEBERG3 6056S 03844W 3X1NM ICEBERG4 5214S 03610W 7X1NM ICEBERG5 6200S 03803W 2X1NM ICEBERG6 5515S 03333W 3X1NM ICEBERG7 5626S 03537W 4X1NM ICEBERG8 5529S 03725W 2X1NM ICEBERG9 5232S 03709W 6X2NM ICEBERG10 6056S 04854W 6X5NM ICEBERG11 6129S 04840W 3X1NM ICEBERG12 6156S 05103W 3X1NM ICEBERG13 6144S 04920W 2X1NM ICEBERG14 6218S 04301W 7X2NM ICEBERG15 6328S 05418W 6X2NM ICEBERG16 6421S 05540W 4X2NM ICEBERG17 5220S 03650W 4X1NM ICEBERG18 5337S 04018W 2X1NM ICEBERG19 6121S 04904W 2X1NM ICEBERG20 6127S 04856W 2X1NM ICEBERG21 5223S 03642W 3X1NM 4.ICEBERGS AREA A: 5200S 02000W 4800S 02000W 4900S 04300W 5900S 04300W B: 6300S 02000W 5200S 02000W 5500S 05000W 6500S 05000W C: 5500S 05000W 6500S 05000W 6830S 06716W 6030S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-05-10
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NE 4/6 WITH GUSTS BY 08/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR E 4 VIS GOOD
MAR DE LA FLOTA COASTS W OF 60W: NE 4/6 WITH GUSTS BY 08/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 4/3 VIS GOOD
GERLACHE STRAIT : NE 3/5 VIS GOOD
MARGARITA BAY : NE 5/6 WITH GUSTS VIS GOOD
EREBUS Y TERROR GULF : SW 5/4 PROB OF FOG AND MIST IN PATCHES VIS GOOD OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80 - N OF 65S: W 7 WITH GUSTS VEER NW 5 WITH GUSTS BY 9/2100 PROB OF MIST PROB OFHVY RAIN VIS VERY POOR
NORTHER BELLINGSHAUSEN SEA E OF 80 - N OF 65S: NE 8 WITH GUSTS BACK SECTOR W 5 BY 9/1800 PROB OF MIST PROB OFISOL RAIN VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA W OF 80 - S OF 65S: NE 8 WITH GUSTS BACK SECTOR W 5 BY 9/2100 PROB OF MIST PROB OFHVY SNOW FALL VIS VERY POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NE 8/9 WITH GUSTS PROB OF MIST PROB OFISOL SNOW FALL VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 8/9 WITH GUSTS PROB OF MIST PROB OFHVY SNOW FALL VIS VERY POOR TO POOR
NORTHERN WEDDELL SEA W OF 35 - N OF 63S: SECTOR S 9/8 WITH GUSTS DECR 6 BY 9/1200 PROB OF MIST PROB OF SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
NORTHERN WEDDELL SEA E OF 35 - N OF 63S: SECTOR E 9 WITH GUSTS VEER SECTOR S 5 WITH GUSTS BY 9/1800 PROB OF MIST PROB OF SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
NORTHERN WEDDELL SEA W OF 40 - S OF 63S: SECTOR S 7/5 WITH GUSTS PROB OF MIST VIS MODERATE OCNL POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR E 5 WITH GUSTS VEER SECTOR S BY 9/1800 PROB OF MIST PROB OFISOL SNOW FALL VIS POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 4 VIS GOOD=