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Southwestern Grand Banks

Warnings

Forecast

Marine Forecast

Issued 10:00 AM NST 05 December 2025

Today Tonight and Saturday.

Storm warning in effect.

Wind west 35 to 45 knots increasing to west 50 to 60 near noon then diminishing to west 40 to 50 late overnight. Wind diminishing to west 35 near noon Saturday and to northwest 25 Saturday evening.

Rain and fog patches changing to flurries near noon then to showers or flurries near midnight. Visibility 1 mile or less in fog patches and in flurries.

Waves

Issued 06:00 AM NST 05 December 2025
Today Tonight and Saturday. Seas 3 to 5 metres building to 5 to 7 this morning and to 8 to 11 this afternoon. Seas subsiding to 6 to 8 Saturday morning and to 4 to 6 Saturday afternoon.

Extended Forecast

Issued 03:00 AM NST 05 December 2025
Sunday Wind northwest 15 to 20 knots.
Monday Wind variable 10 to 15 knots increasing to south 15 to 20.
Tuesday Wind south 25 knots increasing to northwest 25 to 35.

Ice Forecast

Issued 10:00 AM EST 5 December 2025 Today Tonight and Saturday Ice free.  

[ Canadian Ice Service ]

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Map of Atlantic - Newfoundland marine weather areas Eskasoni (First Nations) Heath Point Bonavista Wreckhouse St.Paul Island Winterland Branch Hill Twillingate Stephenville Airport Burgeo St. Lawrence St. John's Int'l Airport St. Anthony Airport Grates Cove Cape Race Grand Étang Sagona Island North Mountain Port aux Basques Ingonish Beach La Scie Ferolle Point Englee Daniel's Harbour Corner Brook Cartwright Airport East Point West Chedabucto Bay – 44489 Blanc-Sablon Airport East Chedabucto Bay – 44488 Cap Whittle Chevery Banquereau - 44139 Charlottetown Airport Mary's Harbour North Cape Natashquan Airport Argentia J.A. Douglas McCurdy Sydney Airport Berry Hill Long Pond Îles de la Madeleine Airport Miscou Island Marticot Island Pool's Island
Legend:
buoy Buoy
land station Land Station
Ice Conditions

Ice Forecasts

Southwestern Grand Banks

Issued 10:00 AM EST 5 December 2025 Today Tonight and Saturday

Ice Edge

First ice edge estimated from Newfoundland near 5039N 5607W to 5042N
5551W to 5141N 5511W to 5142N 5511W to 5147N 5545W to Newfoundland
near 5137N 5557W. Sea ice west then south of the ice edge.

Second ice edge estimated from Labrador near 5347N 5630W to 5445N
5700W to 5547N 5953W to 5646N 6052W 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 5 December 2025 Today Tonight and Saturday

Ice Edge

First ice edge estimated from Newfoundland near 5039N 5607W to 5042N
5551W to 5141N 5511W to 5142N 5511W to 5147N 5545W to Newfoundland
near 5137N 5557W. Sea ice west then south of the ice edge.

Second ice edge estimated from Labrador near 5347N 5630W to 5445N
5700W to 5547N 5953W to 5646N 6052W 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 4 December 2025

Iceberg Limit

Iceberg limit at 0000 UTC 5 Dec estimated from Newfoundland near
4900N 5350W to 4900N 4815W to 5000N 4700W to 5100N 4730W to 5945N
5730W to 6120N 5340W then eastward.

Iceberg Count

No confirmed icebergs.

Iceberg Bulletin

Tail of the Grand Banks

Issued 1:30 PM EST 4 December 2025

Iceberg Limit

Iceberg limit at 0000 UTC 5 Dec estimated from Newfoundland near
4900N 5350W to 4900N 4815W to 5000N 4700W to 5100N 4730W to 5945N
5730W to 6120N 5340W then eastward.

Iceberg Count

Forecasts available to mariners upon request.
Warnings

Warnings (In effect)

Storm warning in effect

Southwestern Grand Banks

Issued 10:00 AM NST 05 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 10:00 AM NST 5 December 2025 Today Tonight and Saturday At 10:00 a.m. NST today deepening low 979 mb located northeast
of Newfoundland.
By 3:00 a.m. NST Saturday low 956 mb located east of Funk Island
Bank.

At 3:00 a.m. NST Saturday approaching ridge located on a line
north-south over the Maritimes.

Marine Weather Statement

Issued 10:06 AM NST 5 December 2025 An intensifying low pressure system northeast of Newfoundland will
move to lie and meander over Funk Island Bank this afternoon and
evening. Strong to gale force southeasterly to northeasterly winds
will spread over eastern and northern waters ahead of the low while
gale to storm force west to northwesterlies will spread over most
waters in its wake. Winds will further intensify to storm to
hurricane force west to northwesterlies tonight as the low deepens,
before slowly diminishing on Saturday as the low moves east of the
marine district.

Marine interests are advised that hurricane force wind warnings are
in effect for Funk Island Bank and Northern Grand Banks.
Storm warnings are in effect for Gulf - Port au Port, Southwest
Coast, South Coast, East Coast, Northeast Coast, and Southern Grand
Banks. Gale warnings are in effect for Strait of Belle Isle - eastern
half, Northeast Gulf, and Belle Isle Bank.

Marine interests are also advised that freezing spray warnings are in
effect for Strait of Belle Isle - western half, Gulf waters,
Southwest Coast, East Coast, and Northeast Coast.

Atlantic - Newfoundland Area

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Marine Weather for Canada

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