1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-18, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 331: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 WITH GUST IN
CENTRAL EAST AREA (40S- 50S AND 20W- 40W)
PART 2 GENERAL SYNOPSIS AT 09:00UTC
171400 UTC 1.SEA ICE LIMIT 5753S 02000W 5712S 02618W 5848S 03217W 5925S 03757W
5954S 04317W 6044S 04814W 6151S 05247W 6234S 05655W 6342S 06032W 6413S 06337W
6532S 06559W 6616S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6147S 05210W 21X12NM
A81 6112S 05327W 28X25NM A76C 5219S 03139W 16X6NM D33C 6315S 05259W 9X4NM A83
6238S 05051W 12X7NM D35 6154S 04434W 28X6NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 6210S 05251W 6X3NM ICEBERG2 6310S 05233W 5X2NM ICEBERG3 6253S 05303W
4X3NM ICEBERG4 6229S 05252W 2X1NM ICEBERG5 5957S 03541W 4X2NM 4.ICEBERGS AREA
A6000S 02000W 4300S 02000W 5300S 03900W 6011S 03900W B6011S 03900W 5500S 03900W
5900S 05000W 6245S 05000W C6245S 05000W 5900S 05000W 6400S 06716W 6700S 06716W
LOW 990HPA 48S 39W MOV SE DPN EXTENDS CFNT AT 48S 39W 42S 42W 36S 52W MOV E
ASOCIATED WITH HIGH 48S 39W 49S 48W 44S 57W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-19
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 3/4 WITH GUSTS PROB OF STORMS STARTING NIGTH VIS
GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR S 3/4 WITH GUSTS PROB OF STORMS STARTING NIGTH VIS
GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 3/4 WITH GUSTS PROB OF STORMS STARTING NIGTH
VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4/5 WITH GUSTS PROB OF RAIN
STARTING EARLY MORNING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 3 LOW PROB OF RAIN VIS GOOD OCNL
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 4 WITH GUSTS VEER VRB 3 BY
18/2100 LOW PROB OF RAIN STARTING EVENING VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): VRB 4 BACK SECTOR S 5 WITH GUSTS BY
19/0600 PROB OF ISOL RAIN AND SNOW MIXTURE VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): VRB 4 LOW PROB OF RAIN AND SNOW MIXTURE
SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/5 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR S 3/4 VEER W BY 19/0300 PROB OF RAIN AND SNOW
MIXTURE SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) W OF 45W: VRB 4 WITH GUSTS PROB OF RAIN
STORMS SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR N 7 WITH GUSTS PROB OF RAIN STORMS VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): NE 8 WITH GUSTS BACK VRB /4 BY
19/0300 PROB OF RAIN SPELLS OF GOOD WEATHER VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR W 4/3 VIS GOOD OCNL
MODERATE
REST OF THE AREA: VRB 5/4 WITH GUSTS PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 6 WITH GUSTS VEER
SECTOR N 4 BY 19/0300 PROB OF RAIN AND SNOW MIXTURE TOWARDS NIGTH IMPR VIS
MODERATE OCNL GOOD
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS VIS GOOD OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR E 5/4 WITH GUSTS BACK
VRB /4 BY 19/0000 PROB OF ISOL RAIN AND SNOW MIXTURE VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE
STARTING NIGTH VIS GOOD OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 5/6 WITH GUSTS PROB OF RAIN AND
SNOW MIXTURE VIS GOOD OCNL MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 18, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
981/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 61S-64S 64W-50W UNTIL 18/2100
982/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 61S-65S 50W-30W UNTIL 19/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 985HPA 65S 67W MOV E WKN
LOW 979HPA 67S 44W MOV E WKN
LOW 990HPA 62S 78W MOV E WKN
LOW 981HPA 68S 35W MOV E WKN
171400 UTC 1.SEA ICE LIMIT 5753S 02000W 5712S 02618W 5848S 03217W 5925S 03757W 5954S 04317W 6044S 04814W 6151S 05247W 6234S 05655W 6342S 06032W 6413S 06337W 6532S 06559W 6616S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6147S 05210W 21X12NM A81 6112S 05327W 28X25NM A76C 5219S 03139W 16X6NM D33C 6315S 05259W 9X4NM A83 6238S 05051W 12X7NM D35 6154S 04434W 28X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 6210S 05251W 6X3NM ICEBERG2 6310S 05233W 5X2NM ICEBERG3 6253S 05303W 4X3NM ICEBERG4 6229S 05252W 2X1NM ICEBERG5 5957S 03541W 4X2NM 4.ICEBERGS AREA A6000S 02000W 4300S 02000W 5300S 03900W 6011S 03900W B6011S 03900W 5500S 03900W 5900S 05000W 6245S 05000W C6245S 05000W 5900S 05000W 6400S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-19
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 7 GUST WITH 8 INTENSITY BACK SECTOR W 6/5 WITH GUSTS BY 18/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 7/8 WITH GUSTS BACK SECTOR W 7 GUST WITH 8 INTENSITY BY 18/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: NW 7 GUST WITH 8 INTENSITY BACK SECTOR W 6/5 WITH GUSTS BY 18/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 7/8 WITH GUSTS BACK SECTOR W 7 GUST WITH 8 INTENSITY BY 18/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS POOR TO MODERATE
GERLACHE STRAIT : SE 4/3 BACK SECTOR S 3 BY 18/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE
MARGARITA BAY : NW 3/4 VEER SECTOR N 4/3 BY 18/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NOON VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NW 6/5 BACK SECTOR S 4/6 BY 18/2100 PROB OF FOG AND MIST IN PATCHES WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: NW 5/6 WITH GUSTS BACK SW 5/6 BY 18/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS EVENING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 4/5 BACK SECTOR S 4 BY 18/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 4/5 BACK SECTOR S 4/3 BY 18/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NOON VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA N OF 65S: NW 7/8 WITH GUSTS BACK SECTOR W 8 WITH GUSTS BY 18/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 3/4 VEER NE 4/3 WITH GUSTS BY 18/2100 PROB OF FOG AND MIST IN PATCHES IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 4/3 VEER SECTOR S 4/3 BY 18/1800 PROB OF MIST VIS MODERATE TO GOOD=