WWST02 SABM 181200
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-05-18, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 220: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR
W WITH GUST IN CENTRAL WEST AREA (40S- 50S AND 40W- 60W) FROM 18/1500
WARNING 219: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 WITH GUST
BETWEEN 40S-55S AND 20W-40W FROM 18/2100
WARNING 215: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR S
WITH GUST IN SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS ISLAS MALVINAS COASTS
SOUTH WEST AREA (50S- 60S AND 40W- 60W) DRAKE AREA (55S- 60S AND 60W- 67W)


PART 2 GENERAL SYNOPSIS AT 09:00UTC
171400 UTC 1.SEA ICE LIMIT 6517S 02000W 6402S 02618W 5933S 03217W 6039S 03758W
6017S 04317W 6105S 04814W 6131S 05247W 6316S 05655W 6342S 06032W 6412S 06337W
6529S 06558W 6640S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5828S 03338W 16X7NM
3.ICEBERGS SMALLER THAN ICEBERG1 4937S 02654W 5X1NM ICEBERG2 4540S 02626W 4X2NM
4.ICEBERGS AREA A6545S 02000W 4200S 02000W 4200S 03700W 6100S 03700W B6100S
03700W 5000S 03700W 5900S 05000W 6120S 05000W C6120S 05000W 5900S 05000W 6300S
06716W 6657S 06716W
LOW 966HPA 59S 57W MOV NE DPN EXP 54S 34W BY 19/1200 EXTENDS CFNT AT 59S 57W 54S
54W 48S 68W MOV NE
LOW 991HPA 45S 34W MOV E WKN EXTENDS CFNT AT 45S 34W 43S 37W 42S 40W


PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-05-19
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 3/4 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR W 3/5 VIS GOOD
URUGUAY SOUTH EAST COASTS: SW 4 VEER W 4/5 PROB OF ISOL RAIN DURING THE MORNING
VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(36�17S - 38�30S): SW 4 VEER W 4/6 WITH GUSTS VIS GOOD TO
MODERATE
RINCON BAHIA BLANCA COASTS(38�30S - 41�S): SECTOR W 4/6 WITH GUSTS DECR 5 WITH
GUSTS PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41�S - 45�S): SECTOR W 5/6 WITH GUSTS BACK SECTOR S
4/5 WITH GUSTS PROB OF ISOL RAIN DURING THE EARLY MORNING VIS GOOD OCNL
MODERATE
GOLFO DE SAN JORGE COASTS(45�S - 48�S): SECTOR W 6 WITH GUSTS BACK SECTOR S 5
WITH GUSTS PROB OF ISOL RAIN STARTING EARLY MORNING VIS MODERATE
SOUTH PATAGONIA COASTS(48�S - 54�S): SECTOR S 8 WITH GUSTS DECR 6/5 WITH GUSTS
BY 19/0300 PROB OF ISOL RAIN RAIN AND SNOW MIXTURE VIS POOR OCNL VERY POOR
FIN DEL MUNDO COASTS(54�S - 55�S): SECTOR S 8 WITH GUSTS DECR 6/5 WITH GUSTS BY
19/1200 PROB OF RAIN AND SNOW MIXTURE VIS POOR OCNL VERY POOR
ISLAS MALVINAS COASTS: SECTOR S 8 WITH GUSTS PROB OF RAIN SNOW FALL VIS POOR

OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: NW 6 WITH GUSTS BACK W 6/5 WITH
GUSTS PROB OF DRIZZLE STORMS SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
 REST OF THE AREA: W 5/6 WITH GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS
MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: NW 6 WITH GUSTS BACK W 5/6
WITH GUSTS VEER NW 6/8 WITH GUSTS BY 19/0600 PROB OF HVY RAIN SPELLS OF GOOD
WEATHER VIS MODERATE TO POOR
 REST OF THE AREA: W 6 WITH GUSTS VEER NW 6/8 WITH GUSTS BY 18/1500 PROB OF HVY
RAIN SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR W 6/8 WITH GUSTS PROB
OF RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL VERY POOR
 REST OF THE AREA: SECTOR W 6/8 WITH GUSTS PROB OF HVY RAIN SNOW FALL VIS POOR
OCNL VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: W 6 WITH GUSTS VEER NW 6/8
WITH GUSTS BY 18/2100 PROB OF HVY RAIN SNOW FALL VIS POOR OCNL VERY POOR
 E OF 30 - S OF 55S: SECTOR W 6/5 WITH GUSTS VEER SECTOR N 4/6 WITH GUSTS PROB
OF SNOW FALL VIS MODERATE OCNL POOR
 REST OF THE AREA: SECTOR W 6/5 WITH GUSTS VEER SECTOR S 6 GUST WITH 8 INTENSITY
PROB OF SNOW FALL VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55 - E OF 50W: SECTOR W 6 WITH
GUSTS TEMPO VEER SECTOR N WITH GUSTS BACK SECTOR S 6/8 WITH GUSTS BY 19/0300
PROB OF RAIN SNOW FALL VIS POOR
 S OF 55 - E OF 50W: SECTOR W 5/4 VEER SECTOR S 5/6 WITH GUSTS INCR 6/8 WITH
GUSTS BY 19/0600 PROB OF SNOW FALL SPELLS OF GOOD WEATHER VIS VERY POOR TO
POOR
 REST OF THE AREA: SECTOR S 8 WITH GUSTS PROB OF RAIN SNOW FALL SPELLS OF GOOD
WEATHER VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 8 WITH GUSTS DECR 6 WITH GUSTS BY
19/1200 PROB OF SNOW FALL SPELLS OF GOOD WEATHER VIS POOR OCNL POOR
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