Southwestern Grand Banks
Forecast
Marine Forecast
Issued 03:30 PM NST 15 December 2025
Tonight and Tuesday.
Storm warning in effect.
Wind west 45 knots increasing to west 50 to 60 this evening then diminishing to west 35 to 45 early Tuesday morning. Wind diminishing to west 25 near noon Tuesday.
Rain and fog banks with a risk of thunderstorms changing to showers or flurries this evening.
Waves
Issued 06:00 AM NST 15 December 2025
Today Tonight and Tuesday.
Seas 4 to 6 metres building to 6 to 8 this evening and to 8 to 11
near midnight. Seas subsiding to 6 to 8 Tuesday morning and to 4 to 6 Tuesday
afternoon.
Extended Forecast
Issued 03:30 PM NST 15 December 2025
Wednesday
Wind west 25 knots diminishing to west 15 to
20 in the morning then backing to southwest 25 late in the day.
Thursday
Wind southwest 35 knots veering to northwest
25 to 35.
Friday
Wind variable 10 to 15 knots increasing to
south 25.
Ice Forecast
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Weather Conditions
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Ice Conditions
Ice Forecasts
Southwestern Grand Banks
Issued 10:00 AM EST 15 December 2025 Today Tonight and TuesdayIce Edge
Ice edge estimated from Newfoundland near 4927N 5356W to 4944N 5358Wto 5012N 5536W to 5125N 5504W to 5349N 5528W to 5633N 6011W to 5928N
6239W to Labrador near 6018N 6424W. Sea ice west of the ice edge.
Ice Coverage
Ice free.
Ice Forecasts
Tail of the Grand Banks
Issued 10:00 AM EST 15 December 2025 Today Tonight and TuesdayIce Edge
Ice edge estimated from Newfoundland near 4927N 5356W to 4944N 5358Wto 5012N 5536W to 5125N 5504W to 5349N 5528W to 5633N 6011W to 5928N
6239W to Labrador near 6018N 6424W. Sea ice west of the ice edge.
Ice Coverage
Forecasts available to mariners upon request.
Iceberg Bulletin
Southwestern Grand Banks
Issued 1:30 PM EST 15 December 2025Iceberg Limit
Iceberg limit at 0000 UTC 16 Dec estimated from Newfoundland near4730N 5239W to 4715N 4945W to 5115N 4715W to 5945N 5730W to 6155N
5330W to 6005N 4945W to 5900N 4600W then northeastward.
Iceberg Count
No confirmed icebergs.Iceberg Bulletin
Tail of the Grand Banks
Issued 1:30 PM EST 15 December 2025Iceberg Limit
Iceberg limit at 0000 UTC 16 Dec estimated from Newfoundland near4730N 5239W to 4715N 4945W to 5115N 4715W to 5945N 5730W to 6155N
5330W to 6005N 4945W to 5900N 4600W then northeastward.
Iceberg Count
Forecasts available to mariners upon request.Warnings
Warnings (In effect)
Storm warning in effect
Southwestern Grand Banks
Issued 3:30 PM NST 15 December 2025'Storm' force winds of 48 to 63 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 3:30 PM NST 15 December 2025 Tonight and Tuesday At 3:30 p.m. NST today deepening low 956 mb located over southernNewfoundland.
By 3:30 p.m. NST Tuesday low 941 mb located east of Belle Isle Bank.
At 3:30 p.m. NST Tuesday approaching ridge located on a line
north-south over the Maritimes.
Marine Weather Statement
Issued 3:25 PM NST 15 December 2025 An intensifying low pressure system over Southern Newfoundland willtrack northeastward across Eastern Newfoundland this evening,
crossing Funk Island Bank early Tuesday morning before departing out
to sea. Gale to storm force southwesterly winds over eastern waters
ahead of the low shift to gale to storm force east to northeasterlies
north of the low. Winds over all waters will shift to gale to
hurricane force westerlies to northerlies behind the low tonight and
Tuesday morning.
Marine interests are advised that hurricane force wind warnings are
in effect for East Coast, Northeast Coast, Belle Isle Bank, Funk
Island Bank, and Northern Grand Banks. Storm warnings are in effect
for all remaining waters except Gulf waters where gale warnings are
in effect.
Marine interests are also advised that freezing spray warnings are in
effect for Strait of Belle Isle, Gulf waters, Northeast Coast, and
Belle Isle Bank.
Marine interests are further advised that water levels are expected
to exceed the highest astronomical tide with high waves and pounding
surf, impacting some coastal areas of Northeast Coast and East Coast
tonight into Tuesday morning, most significant near high tide.
Atlantic - Maritimes Area
- Anticosti
- 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 - northern half
- Georges Bank - southern half
- Grand Manan
- Gulf - Magdalen - northwestern half
- Gulf - Magdalen - southeastern half
- Gulf - Port au Port
- Halifax Harbour and Approaches
- LaHave Bank
- Laurentian Fan
- Lurcher
- L'Isle-aux-Coudres to Tadoussac
- Northumberland Strait - eastern half
- Northumberland Strait - western half
- 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 - northern half
- West Scotian Slope - southern half
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