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Anticosti - southwestern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 30 April 2025

Today Tonight and Thursday.

Storm warning in effect.

Wind south 25 to 30 knots increasing to northwest 50 near noon with gusts to 60 in the Honguedo Strait. Wind diminishing to northwest 40 this evening with gusts to 50 in the Honguedo Strait. Wind diminishing to northwest 30 Thursday morning and to northwest 15 Thursday evening.

Periods of rain changing to flurries this afternoon and ending near midnight. Visibility as low as 1 mile in flurries.

Waves

Issued 05:00 AM ADT 30 April 2025
Today Tonight and Thursday. Seas 2 to 3 metres building to 4 to 6 this afternoon then subsiding to 2 to 3 late overnight. Seas subsiding to 1 to 2 Thursday afternoon.

Extended Forecast

Issued 03:00 AM ADT 30 April 2025
Friday Wind light becoming southeast 15 knots late in the day.
Saturday Wind south 25 knots.
Sunday Wind light increasing to northwest 20 knots late in the day.

Ice Forecast

Issued 10:00 AM EDT 29 April 2025 Today Tonight and Wednesday Open water. 

[ Canadian Ice Service ]

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

Ice Forecasts

Issued 10:00 AM EDT 29 April 2025 Today Tonight and Wednesday

Ice Edge

Ice edge estimated from Quebec near 5013N 6207W to 4959N 6152W to
4959N 6028W to 5057N 5758W to Newfoundland near 5029N 5728W. Sea ice
north then east of the ice edge.

Ice Coverage

Open water.

 

Iceberg Bulletin

Issued 2:50 PM EDT 29 April 2025

Iceberg Limit

Iceberg limit at 0000 UTC 30 Apr estimated from Newfoundland near
4723N 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 the
western iceberg limit.
Warnings

Warnings (In effect)

Storm warning in effect

Anticosti - southwestern half

Issued 06:43 AM ADT 30 April 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 3:00 AM ADT 30 April 2025 Today Tonight and Thursday At 3:00 a.m. ADT today low 991 mb located over eastern Quebec.
By 10:00 a.m. ADT Thursday low 995 mb located over northern
Newfoundland.

At 8:00 p.m. ADT Thursday approaching ridge located on a line
north-south over the western Marine District.

Marine Weather Statement

Issued 2:39 AM ADT 30 April 2025 A low pressure system over Eastern Quebec will track east today to
lie near Anticosti Island by this afternoon and over Northern
Newfoundland by Thursday afternoon. Strong to gale force
southwesterlies ahead of the low shift to strong to storm force
northwesterlies behind it. Winds will gradually diminish on Thursday
as high pressure builds in.

Marine interests are advised that storm warnings are in effect for
the northeastern half of Gulf-Magdalen and southwestern half of
Anticosti. Gale warnings are in effect for Banquereau, northeastern
half of Laurentian Fan, Cabot Strait, southwestern half of
Gulf-Magdalen, Chaleur-Miscou and northeastern half of Anticosti.

Atlantic - Maritimes Area

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Marine Weather for Canada

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