Grand Manan
Forecast
Marine Forecast
Issued 03:00 AM ADT 20 July 2026
Today Tonight and Tuesday.
Strong wind warning in effect.
Wind westerly 15 knots diminishing to light after midnight then increasing to southerly 10 to 15 Tuesday morning. Wind increasing to southeasterly 20 to 25 Tuesday evening.
Waves
Issued 05:00 PM ADT 19 July 2026
Tonight and Monday.
Seas 1 to 2 metres.
Extended Forecast
Issued 03:00 AM ADT 20 July 2026
Wednesday
Wind southerly 25 knots.
Thursday
Wind southwesterly 15 knots.
Friday
Wind variable 10 to 15 knots.
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Weather Conditions
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Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Grand Manan
Issued 03:00 AM ADT 20 July 2026'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.
Synopsis
Technical Marine Synopsis
Issued 3:00 AM ADT 20 July 2026 Today Tonight and Tuesday At 3:00 a.m. ADT today departing low 988 mb located north ofAnticosti Island.
At 10:00 a.m. ADT today ridge located southwest of the Marine
District.
By 10:00 a.m. ADT Tuesday ridge located over the southern Marine
District.
At 8:00 p.m. ADT Tuesday approaching trough located over New
England.
Marine Weather Statement
Issued 7:50 PM ADT 19 July 2026 Marine interests are advised that all gale warnings have ended.
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
- 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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