Anticosti
Forecast
Marine Forecast
Issued 08:00 PM ADT 18 May 2025
Tonight and Monday.
Strong wind warning in effect.
Wind southeast 20 to 25 knots backing to east 20 late overnight then to northeast 25 Monday afternoon except northeast 15 over northwestern sections.
Rain and fog patches. Risk of thunderstorms tonight.
Waves
Issued 05:00 PM ADT 18 May 2025
Anticosti - northeastern half
Tonight and Monday.
Seas 1 to 2 metres building to 2 to 3 Monday
evening.
Anticosti - southwestern half
Tonight and Monday.
Seas 2 to 3 metres subsiding to 1 to 2 Monday
morning.
Extended Forecast
Issued 03:30 PM ADT 18 May 2025
Tuesday
Wind northeast 25 knots.
Wednesday
Wind northeast 25 knots diminishing to
northeast 15 to 20.
Thursday
Wind variable 15 knots.
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Weather Conditions
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Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 16 May 2025 Forecasts have ended for the season.Iceberg Bulletin
Issued 2:30 PM EDT 18 May 2025Iceberg Limit
Iceberg limit at 0000 UTC 19 May estimated from Newfoundland near 4723N 5503W to 4130N 5215W to 4130N 4600W to 4825N 4035W to 5320N 4815W to 5915N 5605W to 5800N 5040W then eastward.Iceberg Count
No confirmed icebergs except less than 10 icebergs east of the western iceberg limit.Warnings
Warnings (In effect)
Strong wind warning in effect
Anticosti
Issued 8:00 PM ADT 18 May 2025'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.
Synopsis
Technical Marine Synopsis
Issued 8:00 PM ADT 18 May 2025 Tonight and Monday At 8:00 p.m. ADT tonight quasi-stationary low 994 mb located oversouthern New Brunswick.
At 8:00 p.m. ADT tonight trough from low located from New Brunswick
to East Scotian Slope.
By 10:00 a.m. ADT Monday trough from low located from New Brunswick
to Banquereau.
St. Lawrence - St. Lawrence River Area
- Anticosti
- Beauport to L'Isle-aux-Coudres
- Browns Bank
- Chaleur - Miscou
- Cornwall to Montréal
- Donnacona to Beauport
- Fundy
- Grand Manan
- Gulf - Magdalen - northeastern half
- Gulf - Magdalen - southwestern half
- Kingston to Cornwall
- Lake Memphrémagog - northern half
- Lake Nipissing
- Lake Saint-Jean
- Lurcher
- L'Isle-aux-Coudres to Tadoussac
- Montréal to Trois-Rivières
- Northumberland Strait
- Pointe à Michel to Pointe-des-Monts
- Pointe-des-Monts to Anticosti - northern half
- Pointe-des-Monts to Anticosti - southern half
- Richelieu River and Northern Lake Champlain
- Saguenay to Tadoussac
- Tadoussac to Pointe à Michel
- Trois-Rivières to Donnacona
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