Northumberland Strait
Forecast
Marine Forecast
Issued 06:36 AM ADT 20 July 2025
Today Tonight and Monday.
Strong wind warning in effect.
Wind southwest 10 to 15 knots increasing to southwest 20 near midnight then diminishing to northwest 10 to 15 late overnight. Wind increasing to northerly 25 Monday afternoon.
Showers beginning this morning. Risk of thunderstorms today and tonight and Monday afternoon and evening.
Extended Forecast
Issued 03:00 AM ADT 20 July 2025
Tuesday
Wind northwest 20 to 25 knots diminishing to
west 10 to 15 in the afternoon.
Wednesday
Wind west 10 to 15 knots diminishing to
light.
Thursday
Wind south 10 to 15 knots veering to
southwest 15 to 20.
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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
Northumberland Strait
Issued 06:36 AM ADT 20 July 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 3:00 AM ADT 20 July 2025 Today Tonight and Monday At 3:00 a.m. ADT today trough located over southern Quebec.By 8:00 p.m. ADT tonight trough located from the Gulf of
St. Lawrence to the Gulf of Maine.
At 3:30 p.m. ADT Monday trough located on a line north-south over
the eastern Marine District.
At 3:00 a.m. ADT today ridge located over the southern Marine
District.
By 8:00 p.m. ADT tonight departing ridge located over the Grand
Banks.
Atlantic - Newfoundland Area
- Anticosti
- Banquereau - northern half
- Banquereau - southern half
- Belle Isle Bank - northern half
- Belle Isle Bank - southern half
- Bras d'Or Lakes
- Cabot Strait
- Chaleur - Miscou
- Eastern Shore
- East Coast - Cape St. Francis and south
- East Coast - north of Cape St. Francis
- Fourchu
- Funk Island Bank
- Gulf - Magdalen
- Gulf - Port au Port
- Lake Melville
- Laurentian Fan - northern half
- Laurentian Fan - southern half
- Mid Labrador Coast
- Northeast Coast
- Northeast Gulf
- Northern Grand Banks
- Northumberland Strait
- Sable
- Southeastern Grand Banks
- Southwestern Grand Banks
- Southwest Coast
- South Coast
- South Labrador Coast
- South Labrador Sea - southern half
- Strait of Belle Isle
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