Grand Manan


Marine Forecast

Issued 03:00 AM AST 11 December 2018

Today Tonight and Wednesday.

Wind north 15 knots becoming variable 10 to 15 this morning then becoming southeast 15 overnight. Wind increasing to north 25 Wednesday morning and to north 30 Wednesday afternoon.

Snow beginning after midnight. Visibility 1 mile or less in snow.

Freezing spray warning in effect.

Freezing spray beginning Wednesday morning.

Temperatures minus 4 rising to plus 1 this evening then falling to minus 8 to minus 2 Wednesday morning.


Issued 05:00 PM AST 10 December 2018
Tonight and Tuesday. Seas 1 metre.

Extended Forecast

Issued 03:00 AM AST 11 December 2018
Thursday Wind north 20 to 25 knots diminishing to northwest 10 to 15 late in the day.
Friday Wind southwest 15 to 20 knots.
Saturday Wind southeast 15 knots increasing to south 20 to 25.

Ice Forecast

Issued 10:00 AM EST 10 December 2018 Today Tonight and Tuesday Ice free. 

[ 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 10 December 2018 Today Tonight and Tuesday

Ice Edge

First ice edge estimated from Nova Scotia near 4545N 6210W to 4630N
6150W to 4705N 6400W to 4850N 6350W to 4925N 6515W to 4910N 6700W to
4955N 6605W to 4845N 6155W to 5115N 5740W to Newfoundland near 5040N
5715W. 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.


Warnings (In effect)

Freezing spray warning in effect

Grand Manan

Issued 03:00 AM AST 11 December 2018

Moderate or severe freezing spray is 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.


Technical Marine Synopsis

Issued 3:00 AM AST 11 December 2018 Today Tonight and Wednesday At 3:00 a.m. AST today trough located on a line northeast-southwest
over Cabot Strait.
By 3:30 p.m. AST today departing trough located on a line
northeast-southwest over the Grand Banks.

At 8:00 p.m. AST tonight intensifying low 998 mb located southwest
of Georges Bank.
By 8:00 p.m. AST Wednesday departing low 955 mb located over the
southeastern Grand Banks.

At 3:00 a.m. AST today ridge from 1025 mb high located on a line
northwest-southeast over Maine.
By 3:30 p.m. AST today ridge from 1022 mb high located on a line
northwest-southeast over East Scotian Slope.

Marine Weather Statement

Issued 2:55 AM AST 11 December 2018 A trough of low pressure near the Cabot Strait will move south to
Banquereau this morning before moving east of forecast waters. Strong
to gale force northwesterlies prevail near the trough over eastern
waters tonight into this morning. The cold northwesterlies will also
give freezing spray to much of the northern marine district into this

An intensifying low pressure system southwest of Georges Bank
Tonight will move to lie near Laurentian Fan Wednesday morning.
This will give strong to gale force north to northeasterlies to slope
waters which will increase to gale to storm force northerlies for
easternmost waters. Again, cold northerlies developing behind the low
will give freezing spray to parts of the north and western marine

Marine interests are advised that a storm warning is in effect for
Laurentian Fan. Gale warnings are in effect for East Scotian Slope,
Fourchu, Banquereau, Cabot Strait, Northumberland Strait-eastern half
and Gulf-Magdalen eastern half.

In addition, freezing spray warnings are in effect for Fundy, Grand
Manan, Lurcher, Northumberland Strait, Gulf-Magdalen, Chaleur-Miscou
and Anticosti.

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