Northumberland Strait


Marine Forecast

Issued 03:00 AM AST 18 December 2018

Today Tonight and Wednesday.

Gale warning in effect.

Wind northeast 25 knots backing to north 30 early this morning then increasing to northwest 35 late this morning. Wind increasing to northwest 40 late this afternoon then diminishing to northwest 30 Wednesday afternoon.

Snow changing to flurries this afternoon and ending Wednesday afternoon. Visibility 1 mile or less in precipitation.

Risk of freezing spray overnight and Wednesday morning.

Temperatures plus 2 falling to minus 3 overnight.

Extended Forecast

Issued 03:00 AM AST 18 December 2018
Thursday Wind northwest 25 knots backing to west 15 to 20 in the afternoon then diminishing to light late in the day.
Friday Wind light increasing to southeast 20 knots late in the day.
Saturday Wind southeast 35 knots diminishing to southwest 25 late in the day.

Ice Forecast

Issued 10:00 AM EST 17 December 2018 Today Tonight and Tuesday Ice free except 9 tenths new ice including 3 tenths grey ice along parts of the coasts. 

[ Canadian Ice Service ]

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Weather Conditions

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Map of St. Lawrence - St. Lawrence River marine weather areas Mont-Louis - 45138 Lake Nipissing - 45152 North Bay Airport Beauport Deschambault Île d'Orléans L'Assomption Trois-Rivières Airport Île aux-Grues Lac Saint-Pierre Montréal-Trudeau Int'l Airport Saint-Hubert Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Saint-Anicet Baie-Comeau Airport Cap-Rouge Île Rouge Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts Pointe-Noire Cap-d'Espoir Rivière-la-Madeleine Gaspé Airport La Pocatière Mont-Joli Airport New Carlisle Pointe-au-Père Port Menier Île Bicquette Cap-Chat CFB Bagotville Jonquière Mistook Normandin Roberval Airport Bas Caraquet Bathurst Airport Bouctouche AAFC Charlo Miramichi Fundy Park (Alma) Grand Manan Kouchibouguac Miscou Island Greater Moncton Roméo LeBlanc Int'l Airport Point Lepreau Saint John Airport St. Stephen Brier Island Yarmouth Airport North Cape
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 17 December 2018 Today Tonight and Tuesday

Ice Edge

First ice edge estimated from Nova Scotia near 4615N 6115W to 4720N
6350W to 4850N 6350W to 5000N 6530W to 4955N 6450W to 4920N 6400W to
4840N 6200W to 5115N 5740W to Newfoundland near 5025N 5725W. Sea ice
west and north of the ice edge.

Second ice edge estimated from 4700N 6155W to 4715N 6220W to 4750N
6130W to 4735N 6105W to 4700N 6155W. Sea ice within the ice edge.

Ice Coverage

Ice free except 9 tenths new ice including 3 tenths grey ice along
parts of the coasts.


Warnings (In effect)

Gale warning in effect

Northumberland Strait

Issued 03:00 AM AST 18 December 2018

'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.


Technical Marine Synopsis

Issued 3:00 AM AST 18 December 2018 Today Tonight and Wednesday At 3:00 a.m. AST today low 978 mb located south of Cape Breton
By 3:30 p.m. AST today low 972 mb located over Cabot Strait.

At 10:00 a.m. AST Wednesday departing low 972 mb located northeast
of Newfoundland.

At 8:00 p.m. AST Wednesday approaching ridge located on a line
north-south over New England.

Marine Weather Statement

Issued 2:46 AM AST 18 December 2018 An intensifying low pressure system located between Sable Island and
Cape Breton at forecast time will track slowly northeastward into
Cabot Strait this morning then drift eastward toward Southern
Newfoundland tonight. Gale force easterlies just ahead of this low
will become strong then gale force west to northwesterlies across the
entire district in its wake today. Winds are expected to reach storm
force over the Gulf-Magdalen waters later on Tuesday. Cold air
behind this system will give freezing spray to Anticosti tonight and
Tuesday with a risk of freezing spray to the remaining Gulf waters.

Marine interests are advised that a storm warning is in effect for
Gulf-Magdalen. Gale warnings are in effect for all remaining marine
waters. A freezing spray warning is in effect for Anticosti.

Marine interests are also advised that higher than normal water
levels and heavy pounding surf are expected today along the Îles de
la Madeleine, as well as north to northwest-facing coastlines of
Western Cape Breton, Eastern Prince Edward Island and Northern Nova

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