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Anticosti - northwestern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM AST 06 March 2026

Today Tonight and Saturday.

Wind northwest 15 knots diminishing to light early this morning then increasing to south 15 after midnight. Wind increasing to south 20 to 25 Saturday morning and to southerly 25 to 30 Saturday afternoon.

Flurries Saturday afternoon and evening changing to rain.

Over open water risk of freezing spray Saturday morning and afternoon.

Temperatures minus 12 rising to plus 2 Saturday evening.

Waves

Issued 05:00 AM AST 06 March 2026

Anticosti - eastern half

Today Tonight and Saturday. Over open water seas 1 metre or less building to 1 to 2 Saturday morning and to 2 to 3 Saturday afternoon. Seas building to 3 to 4 Saturday evening.

Anticosti - western half

Today Tonight and Saturday. Over open water seas 1 metre or less.

Extended Forecast

Issued 03:00 AM AST 06 March 2026
Sunday Wind southwest 25 to 35 knots diminishing to northwest 20 in the afternoon.
Monday Wind southwest 20 knots.
Tuesday Wind southwest 30 knots diminishing to northwest 20.

Ice Forecast

Anticosti - eastern half

Issued 10:00 AM EST 5 March 2026 Today Tonight and Friday Open water except 6 tenths new ice including 2 tenths grey ice along parts of the coasts. 2 tenths first-year ice in the extreme southwestern section. Consolidated first-year ice along parts of the coasts. 

Anticosti - western half

Issued 10:00 AM EST 5 March 2026 Today Tonight and Friday 5 tenths new ice including 2 tenths grey ice except 7 tenths grey-white ice including 1 tenth first-year ice in the southern section. Consolidated first-year ice along parts of the coasts. 

[ Canadian Ice Service ]

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Map of Atlantic - Maritimes marine weather areas East Scotia Slope - 44137 Cap-Chat Burgeo Île Bicquette New Carlisle Îles de la Madeleine Airport Port Menier Summerside North Cape Pointe-au-Père Mont-Joli Airport La Pocatière Wreckhouse Banquereau - 44139 Port aux Basques Sagona Island Gaspé Airport LaHave Bank - 44150 Halifax Harbour - 44258 St. Lawrence Stephenville Airport Western Head Winterland Branch Hill Île aux Perroquets Beaver Island Baccaro Point St. Stephen Pointe-des-Monts Saint John Airport Sept-Îles Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Longue-Pointe-de-Mingan Miscou Island Île Rouge Kouchibouguac Pointe-Noire Kouchibouguac Havre-Saint-Pierre Airport Grand Manan Fundy Park (Alma) Miramichi Charlo West Chedabucto Bay – 44489 Bathurst Airport Baie-Comeau Airport Bas Caraquet East Chedabucto Bay – 44488 Nappan AAFC East Point Charlottetown Airport Yarmouth Airport Cap-d'Espoir Tracadie J.A. Douglas McCurdy Sydney Airport Shearwater Airport St.Paul Island Sable Island Parrsboro North Mountain Rivière-la-Madeleine McNabs Island Lunenburg Kentville AAFC Ingonish Beach Hart Island CFB Greenwood Grand Étang Eskasoni (First Nations) Debert Caribou Point Brier Island
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Ice Conditions

Ice Forecasts

Anticosti - eastern half

Issued 10:00 AM EST 5 March 2026 Today Tonight and Friday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4600N 5845W to 4714N 5856W to 4630N 5615W to
Newfoundland near 4640N 5530W. Sea ice north of the ice edge.

Ice Coverage

Open water except 6 tenths new ice including 2 tenths grey ice along
parts of the coasts. 2 tenths first-year ice in the extreme
southwestern section. Consolidated first-year ice along parts of the
coasts.

Ice Forecasts

Anticosti - western half

Issued 10:00 AM EST 5 March 2026 Today Tonight and Friday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4600N 5845W to 4714N 5856W to 4630N 5615W to
Newfoundland near 4640N 5530W. Sea ice north of the ice edge.

Ice Coverage

5 tenths new ice including 2 tenths grey ice except 7 tenths
grey-white ice including 1 tenth first-year ice in the southern
section. Consolidated first-year ice along parts of the coasts.

 

Iceberg Bulletin

Issued 1:50 PM EST 5 March 2026

Iceberg Limit

Iceberg limit at 0000 UTC 6 Mar estimated from Newfoundland near
4640N 5310W to 4455N 4955W to 4545N 4525W to 4820N 4140W to 5930N
5700W to 6150N 5400W to 5850N 5035W to 5810N 4530W then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM AST 6 March 2026 Today Tonight and Saturday At 10:00 a.m. AST today low located southwest of Georges Bank.
By 3:30 p.m. AST Saturday dissipating low located south of East
Scotian Slope.

At 10:00 a.m. AST Saturday low 997 mb located over Ontario.
By 8:00 p.m. AST Saturday approaching low 987 mb located northwest
of the Maritimes.

Marine Weather Statement

Issued 2:29 AM AST 6 March 2026 A low pressure system will slowly approach southwestern waters today
passing south of Georges Bank this evening before dissipating on
Saturday. Winds will increase to strong to gale force easterlies just
north of the low then diminish on Saturday.

On Saturday another low will approach the Maritimes from the west.
Strong to gale force southerly winds are forecast to develop late in
the day over northern waters.

Marine interests are advised that gale warnings are in effect for
Georges Bank, West Scotian Slope, Gulf-Magdalen - northeastern half
and Anticosti - southeastern half.

Marine interests are also advised that freezing spray warnings are in
effect for Cabot Strait - northern half, Gulf-Magdalen - northeastern
half and Anticosti - southeastern half.

Atlantic - Maritimes Area

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Marine Weather for Canada

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