Grand Manan
Forecast
Marine Forecast
Issued 10:00 AM ADT 19 June 2025
Today Tonight and Friday.
Strong wind warning in effect.
Wind south 10 to 15 knots increasing to south 15 to 20 this evening then veering to southwest 25 Friday afternoon. Wind diminishing to west 15 Friday evening.
Scattered showers and fog banks. Risk of thunderstorms late this afternoon and this evening.
Waves
Issued 05:00 AM ADT 19 June 2025
Today Tonight and Friday.
Seas 1 metre or less building to 1 to 2 late overnight and to 2
to 3 Friday afternoon.
Extended Forecast
Issued 03:00 AM ADT 19 June 2025
Saturday
Wind northwest 20 knots diminishing to light
in the morning.
Sunday
Wind southwest 15 knots increasing to southwest
20.
Monday
Wind southwest 10 to 15 knots.
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Weather Conditions
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Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 26 May 2025 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Grand Manan
Issued 10:00 AM ADT 19 June 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 10:00 AM ADT 19 June 2025 Today Tonight and Friday At 10:00 a.m. ADT today low 984 mb located over southern LabradorSea.
By 10:00 a.m. ADT today trough from 984 mb low located from Labrador
Sea to Newfoundland.
At 3:30 p.m. ADT today low 1000 mb located over eastern Ontario.
By 3:30 p.m. ADT Friday low 996 mb located over Chaleur Bay.
St. Lawrence - St. Lawrence River Area
- Anticosti - northwestern half
- Anticosti - southeastern half
- Beauport to L'Isle-aux-Coudres
- Browns Bank
- Chaleur - Miscou
- Cornwall to Montréal
- Donnacona to Beauport
- Fundy
- Grand Manan
- Gulf - Magdalen
- 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
- Prescott to Cornwall
- Richelieu River and Northern Lake Champlain
- Saguenay to Tadoussac
- Tadoussac to Pointe à Michel
- Trois-Rivières to Donnacona
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