Language selection

Weather shortcuts

Gulf - Magdalen - southwestern half

Forecast

Marine Forecast

Issued 03:00 AM ADT 16 March 2026

Today Tonight and Tuesday.

Gale warning in effect.

Wind light increasing to southeast 15 knots early this morning and to southeast 20 to 25 late this morning. Wind increasing to southeast 40 early this evening then veering to south 45 Tuesday morning. Wind diminishing to southwest 30 Tuesday evening.

Snow beginning this afternoon changing to rain this evening then to scattered showers after midnight. Fog patches forming this evening and dissipating Tuesday evening.

Temperatures minus 7 rising to plus 6 Tuesday afternoon then falling to plus 1 Tuesday evening.

Waves

Issued 05:00 PM ADT 15 March 2026
Tonight and Monday. Over open water seas 1 metre or less building to 1 to 2 Monday afternoon.

Extended Forecast

Issued 03:00 AM ADT 16 March 2026
Wednesday Wind west 25 to 35 knots diminishing to west 20 to 25 late in the day.
Thursday Wind south 15 knots increasing to south 20 to 25.
Friday Wind south 20 to 25 knots.

Ice Forecast

Issued 10:00 AM EDT 15 March 2026 Today Tonight and Monday 7 tenths first-year ice. Consolidated first-year ice along parts of the Prince Edward Island coast. 

[ Canadian Ice Service ]

Stay connected

ATOM

Weather Conditions

Skip Image

Zoom-in to make a selection

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

Ice Forecasts

Issued 10:00 AM EDT 15 March 2026 Today Tonight and Monday

Ice Edge

Ice edge estimated from Nova Scotia near 4437N 6325W to 4419N 6258W
to 4602N 5807W to Newfoundland near 4740N 5814W. Sea ice north of
the ice edge.

Ice Coverage

7 tenths first-year ice. Consolidated first-year ice along parts of
the Prince Edward Island coast.

 

Iceberg Bulletin

Issued 2:50 PM EDT 15 March 2026

Iceberg Limit

Iceberg limit at 0000 UTC 16 Mar estimated from Newfoundland near
4640N 5310W to 4555N 4840W to 4550N 4440W to 4815N 4300W to 5220N
4615W to 5650N 5345W to 5930N 5700W to 6120N 5400W to 5815N 4855W
then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Gale warning in effect

Gulf - Magdalen - southwestern half

Issued 03:00 AM ADT 16 March 2026

'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.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 16 March 2026 Today Tonight and Tuesday At 3:00 a.m. ADT today low 986 mb located near the Great Lakes.
By 3:00 a.m. ADT Tuesday low 976 mb located over southern Quebec.

At 3:30 p.m. ADT Tuesday departing low 962 mb located over Labrador.

At 3:00 a.m. ADT today ridge located from the Gulf of St. Lawrence
to Laurentian Fan.
By 8:00 p.m. ADT tonight departing ridge located east of the
Marine District.

Marine Weather Statement

Issued 2:38 AM ADT 16 March 2026 A low pressure system near the Great Lakes will move to lie over
Southern Quebec tonight and into Labrador on Tuesday. Strong to gale
force southeasterlies will develop over western waters today and over
eastern waters tonight. Winds will veer and increase to gale force
southerlies or southwesterlies early Tuesday over most waters.
Late on Tuesday, winds will diminish somewhat to strong to gale force
southwesterlies over western waters.

Marine interests are advised that gale warnings are in effect for all
regions except Chaleur-Miscou - western half.

Marine interests are also advised that a freezing spray warning is in
effect for Anticosti.

St. Lawrence - St. Lawrence River Area

Another Region

Features

New: Colour-coded weather alerts

Learn more about weather alerting in Canada

Date modified: