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Cabot Strait - southern half

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 12 March 2026

Tonight and Friday.

Gale warning in effect.

Wind southwest 35 knots diminishing to southwest 25 this evening then veering to northwest 15 to 20 late overnight. Wind increasing to northwest 25 Friday morning and to west 35 Friday afternoon. Wind diminishing to northwest 25 Friday evening.

Rain and fog patches with a risk of thunderstorms late this afternoon and this evening changing to flurries Friday morning and ending near noon Friday. Visibility 1 mile or less in fog patches and in flurries.

Risk of freezing spray Friday afternoon and evening.

Temperatures plus 5 falling to minus 3 Friday afternoon.

Waves

Issued 05:00 PM ADT 12 March 2026
Tonight and Friday. Seas 2 to 3 metres building to 3 to 4 Friday afternoon.

Extended Forecast

Issued 03:30 PM ADT 12 March 2026
Saturday Wind variable 15 knots increasing to southeast 35 in the afternoon.
Sunday Wind northwest 35 knots diminishing to northwest 25.
Monday Wind southeast 15 knots increasing to southeast 35.

Ice Forecast

Issued 10:00 AM EDT 12 March 2026 Today Tonight and Friday Open water except 2 tenths first-year ice in the northern section. Consolidated grey-white ice in a few sheltered bays. 

[ Canadian Ice Service ]

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Map of Atlantic - Newfoundland marine weather areas Englee Wreckhouse Winterland Branch Hill Stephenville Airport Eskasoni (First Nations) Grand Étang St. Lawrence St. John's Int'l Airport St. Anthony Airport Ingonish Beach Sagona Island Port aux Basques La Scie North Mountain Ferolle Point Twillingate Daniel's Harbour St.Paul Island Corner Brook Cape Race J.A. Douglas McCurdy Sydney Airport Burgeo West Chedabucto Bay – 44489 Bonavista Berry Hill Charlottetown Airport Argentia East Point North Cape Long Pond Banquereau - 44139 Îles de la Madeleine Airport Miscou Island Cartwright Airport Cap Whittle Blanc-Sablon Airport Natashquan Airport East Chedabucto Bay – 44488 Marticot Island Pool's Island Mary's Harbour Grates Cove Chevery
Legend:
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land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 12 March 2026 Today Tonight and Friday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4603N 5814W to 4722N 5805W to 4643N 5628W to
Newfoundland near 4640N 5530W. Sea ice north of the ice edge.

Ice Coverage

Open water except 2 tenths first-year ice in the northern section.
Consolidated grey-white ice in a few sheltered bays.

 

Iceberg Bulletin

Issued 2:53 PM EDT 12 March 2026

Iceberg Limit

Iceberg limit at 0000 UTC 13 Mar estimated from Newfoundland near
4640N 5310W to 4520N 4930W to 4555N 4410W to 4815N 4300W to 5220N
4615W to 5650N 5345W to 5930N 5700W to 6120N 5400W to 5825N 4900W
then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Gale warning in effect

Cabot Strait - southern half

Issued 3:30 PM ADT 12 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 3:30 PM ADT 12 March 2026 Tonight and Friday At 3:30 p.m. ADT today departing low 994 mb located over the Gulf
of St. Lawrence.

At 3:00 a.m. ADT Friday trough from low located on a line
northeast-southwest over the eastern Marine District.
By 8:00 p.m. ADT Friday departing trough located east of the
Grand Banks.

Marine Weather Statement

Issued 3:13 PM ADT 12 March 2026 A low pressure system is currently over the Gulf waters and will
Progress into the Gulf of St. Lawrence by this evening. Winds are
forecast to become strong to gale force northwesterlies in its wake
this afternoon and into the evening.

Marine interests are advised that gale warnings are in effect for all
waters except for Fundy, Grand Manan, Lurcher, Browns Bank, Georges
Bank, southwestern shore, West Scotian Slope, Northumberland Strait,
and Chaleur - Miscou - western half.

Marine interests are also advised that freezing spray warnings are in
effect for Cabot Strait - northern half and all Gulf of St. Lawrence
waters except Northumberland Strait.

Atlantic - Newfoundland Area

Another Region

Marine Weather for Canada

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