Southwestern Grand Banks
Forecast
Marine Forecast
Issued 03:00 AM NDT 11 September 2026
Today Tonight and Saturday.
Gale warning in effect.
Wind southwest 35 knots diminishing to west 25 this morning then veering to northwest 15 to 20 Saturday evening.
Showers.
Waves
Issued 06:00 AM NDT 11 September 2026
Today Tonight and Saturday.
Seas 2 to 3 metres except 3 to 4 over northern sections tonight
and Saturday. Seas subsiding to 1 to 2 Saturday evening.
Extended Forecast
Issued 03:00 AM NDT 11 September 2026
Sunday
Wind light becoming southwest 10 to 15 knots
late in the day.
Monday
Wind south 10 to 15 knots increasing to south
25 to 35.
Tuesday
Wind southwest 25 knots diminishing to
northwest 15.
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Weather Conditions
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Ice Conditions
Ice Forecasts
Southwestern Grand Banks
Issued 10:00 AM EDT 7 August 2026 Forecasts have ended for the season.Ice Forecasts
Tail of the Grand Banks
Issued 10:00 AM EDT 7 August 2026 Forecasts have ended for the season.Iceberg Bulletin
Southwestern Grand Banks
Issued 2:30 PM EDT 10 September 2026Iceberg Limit
Iceberg limit at 0000 UTC 11 Sep estimated from Newfoundland near4930N 5510W to 5500N 5200W to 6000N 5730W to 6130N 5420W to 5900N
4610W then northeastward.
Iceberg Count
No confirmed icebergs.Iceberg Bulletin
Tail of the Grand Banks
Issued 2:30 PM EDT 10 September 2026Iceberg Limit
Iceberg limit at 0000 UTC 11 Sep estimated from Newfoundland near4930N 5510W to 5500N 5200W to 6000N 5730W to 6130N 5420W to 5900N
4610W then northeastward.
Iceberg Count
Forecasts available to mariners upon request.Warnings
Warnings (In effect)
Gale warning in effect
Southwestern Grand Banks
Issued 03:00 AM NDT 11 September 2026'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 NDT 11 September 2026 Today Tonight and Saturday At 3:00 a.m. NDT today trough located on a line north-south overNewfoundland.
By 8:00 p.m. NDT tonight departing trough located east of the
Grand Banks.
At 3:00 a.m. NDT today trough located on a line east-west over
northern Quebec.
By 3:00 a.m. NDT Saturday trough located on a line
northeast-southwest over Newfoundland.
Marine Weather Statement
Issued 2:59 AM NDT 11 September 2026 A trough of low pressure over Eastern Newfoundland will depart eastof the Grand Banks this evening. Strong to gale force south to
southwesterlies ahead of this trough will diminish to strong
southwesterlies in its wake.
Meanwhile, a second trough will approach from the northwest. Strong
to gale force westerlies ahead of this second trough will veer to
strong to gale force northwesterlies in its wake.
Marine interests are advised that gale warnings are in effect for all
waters except for Strait of Belle Isle - western half, Southwest
Coast, South Coast, and Northeast Coast.
Atlantic - Newfoundland Area
- Anticosti
- Banquereau
- Belle Isle Bank
- Bras d'Or Lakes
- Cabot Strait
- Chaleur - Miscou
- Eastern Shore - eastern half
- East Coast
- Fourchu
- Funk Island Bank
- Gulf - Magdalen - northwestern half
- Gulf - Magdalen - southeastern half
- Gulf - Port au Port
- Lake Melville
- Laurentian Fan
- Mid Labrador Coast - Hopedale and south
- Northeast Coast
- Northeast Gulf
- Northern Grand Banks
- Northumberland Strait - eastern half
- Northumberland Strait - western half
- Sable - eastern half
- Southeastern Grand Banks
- Southwestern Grand Banks
- Southwest Coast
- South Coast
- South Labrador Coast
- South Labrador Sea - southern half
- Strait of Belle Isle - eastern half
- Strait of Belle Isle - western half
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