Southwestern Grand Banks
Forecast
Marine Forecast
Issued 03:00 AM NDT 30 April 2025
Today Tonight and Thursday.
Gale warning in effect.
Wind northwest 10 to 15 knots becoming light this morning then increasing to south 15 to 20 this afternoon. Wind increasing to south 25 this evening then veering to west 25 overnight. Wind increasing to west 35 Thursday morning.
Rain and fog banks tonight.
Waves
Issued 06:00 PM NDT 29 April 2025
Tonight and Wednesday.
Seas 2 to 3 metres subsiding to 1 to 2 Wednesday
morning.
Extended Forecast
Issued 03:00 AM NDT 30 April 2025
Friday
Wind northwest 25 knots diminishing to
northwest 15 in the afternoon.
Saturday
Wind variable 10 to 15 knots.
Sunday
Wind southwest 15 to 20 knots.
Ice Forecast
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Weather Conditions
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Ice Conditions
Ice Forecasts
Southwestern Grand Banks
Issued 10:00 AM EDT 29 April 2025 Today Tonight and WednesdayIce Edge
Ice edge estimated from Newfoundland near 4837N 5300W to 4849N 5135Wto 5418N 5143W to 5607N 5624W to 6041N 5907W to 6200N 5830W then
northeastward. Sea ice north then west of the ice edge.
Ice Coverage
Bergy water.
Ice Forecasts
Tail of the Grand Banks
Issued 10:00 AM EDT 29 April 2025 Today Tonight and WednesdayIce Edge
Ice edge estimated from Newfoundland near 4837N 5300W to 4849N 5135Wto 5418N 5143W to 5607N 5624W to 6041N 5907W to 6200N 5830W then
northeastward. Sea ice north then west of the ice edge.
Ice Coverage
Forecasts available to mariners upon request.
Iceberg Bulletin
Southwestern Grand Banks
Issued 2:50 PM EDT 29 April 2025Iceberg Limit
Iceberg limit at 0000 UTC 30 Apr estimated from Newfoundland near4723N 5503W to 4040N 5210W to 4100N 4720W to 4530N 3335W to 4715N
3340W to 5915N 5605W to 6035N 5500W to 5920N 4925W then eastwards.
Western iceberg limit at 0000 UTC 30 Apr estimated from Quebec near
5020N 6115W to Newfoundland near 4805N 5845W.
Iceberg Count
No confirmed icebergs except less than 10 icebergs northeast of theiceberg limit.
Iceberg Bulletin
Tail of the Grand Banks
Issued 2:50 PM EDT 29 April 2025Iceberg Limit
Iceberg limit at 0000 UTC 30 Apr estimated from Newfoundland near4723N 5503W to 4040N 5210W to 4100N 4720W to 4530N 3335W to 4715N
3340W to 5915N 5605W to 6035N 5500W to 5920N 4925W then eastwards.
Western iceberg limit at 0000 UTC 30 Apr estimated from Quebec near
5020N 6115W to Newfoundland near 4805N 5845W.
Iceberg Count
Forecasts available to mariners upon request.Warnings
Warnings (In effect)
Gale warning in effect
Southwestern Grand Banks
Issued 03:00 AM NDT 30 April 2025'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 or Weatheradio stations.
Synopsis
Technical Marine Synopsis
Issued 3:00 AM NDT 30 April 2025 Today Tonight and Thursday At 3:00 a.m. NDT today low 990 mb located over Quebec.By 3:00 a.m. NDT Thursday low 995 mb located over the Northeast
Coast of Newfoundland.
At 3:00 a.m. NDT today trough located on a line northeast-southwest
over Labrador Sea.
By 10:00 a.m. NDT today weakening trough located over eastern
Labrador Sea.
At 3:00 a.m. NDT today ridge located on a line northeast-southwest
over the Avalon Peninsula.
By 8:00 p.m. NDT tonight departing ridge located southeast of the
Grand Banks.
Marine Weather Statement
Issued 2:54 AM NDT 30 April 2025 A low pressure system over Quebec will track east today to lie overthe Northeast Coast of Newfoundland early Thursday. Strong to gale
force west to northwesterly winds will develop in the wake of the low
tonight.
Marine interests are advised that gale warnings are in effect for
Strait of Belle Isle - eastern half, Gulf - Port au Port, Southwest
Coast, South Coast, Northeast Coast, and Southwestern Grand Banks.
Atlantic - Maritimes Area
- Anticosti - northeastern half
- Anticosti - southwestern half
- Banquereau
- Bras d'Or Lakes
- Browns Bank
- Cabot Strait
- Chaleur - Miscou - eastern half
- Chaleur - Miscou - western half
- Eastern Shore - eastern half
- Eastern Shore - western half
- East Coast - Cape St. Francis and south
- East Scotian Slope
- Fourchu
- Fundy
- Georges Bank
- Grand Manan
- Gulf - Magdalen - northeastern half
- Gulf - Magdalen - southwestern half
- Gulf - Port au Port
- Halifax Harbour and Approaches
- LaHave Bank
- Laurentian Fan - northeastern half
- Laurentian Fan - southwestern half
- Lurcher
- L'Isle-aux-Coudres to Tadoussac
- Northumberland Strait
- Pointe à Michel to Pointe-des-Monts
- Pointe-des-Monts to Anticosti - northern half
- Pointe-des-Monts to Anticosti - southern half
- Sable - eastern half
- Sable - western half
- Southeastern Grand Banks
- Southwestern Grand Banks
- Southwestern Shore
- Southwest Coast
- South Coast
- Tadoussac to Pointe à Michel
- West Scotian Slope
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