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Northern Grand Banks

Forecast

Marine Forecast

Issued 10:00 AM NDT 18 April 2026

Today Tonight and Sunday.

Gale warning in effect.

Wind northwest 35 knots diminishing to northwest 25 near noon and to northwest 15 to 20 early this evening. Wind diminishing to variable 10 to 15 late overnight then becoming south 10 to 15 near noon Sunday. Wind increasing to southwest 25 Sunday evening.

Temperatures minus 2 rising to plus 3 Sunday afternoon.

Waves

Issued 06:00 AM NDT 18 April 2026
Today Tonight and Sunday. Seas 2 to 3 metres building to 3 to 5 early this morning then subsiding to 2 to 3 late overnight. Seas subsiding to 1 to 2 Sunday evening.

Extended Forecast

Issued 03:00 AM NDT 18 April 2026
Monday Wind south 25 knots.
Tuesday Wind variable 15 to 20 knots.
Wednesday Wind southeast 25 to 35 knots.

Ice Forecast

Issued 10:00 AM EDT 18 April 2026 Today Tonight and Sunday Special ice warning in effect. Bergy water except 1 tenth first-year ice in strips and patches in the northern section. Unusual presence of first-year ice in the northern section today and continuing Sunday.  

[ Canadian Ice Service ]

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Weather Conditions

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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
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Ice Conditions

Ice Forecasts

Northern Grand Banks

Issued 10:00 AM EDT 18 April 2026 Today Tonight and Sunday

Ice Edge

Ice edge estimated from Newfoundland near 4745N 5243W to 4530N 4721W
to 4639N 4639W to 5530N 5230W to 5700N 5600W to 6045N 5800W to 6200N
5700W then northeastward. Sea ice north then west of the ice edge.

Ice Coverage

Special ice warning in effect.

Bergy water except 1 tenth first-year ice in strips and patches in
the northern section.
Unusual presence of first-year ice in the northern section today and
continuing Sunday.

Ice Forecasts

Flemish

Issued 10:00 AM EDT 18 April 2026 Today Tonight and Sunday

Ice Edge

Ice edge estimated from Newfoundland near 4745N 5243W to 4530N 4721W
to 4639N 4639W to 5530N 5230W to 5700N 5600W to 6045N 5800W to 6200N
5700W then northeastward. Sea ice north then west of the ice edge.

Ice Coverage

Forecasts available to mariners upon request.

 

Iceberg Bulletin

Northern Grand Banks

Issued 2:40 PM EDT 17 April 2026

Iceberg Limit

Iceberg limit at 0000 UTC 18 Apr estimated from Newfoundland near
4655N 5400W to 4500N 5200W to 4440N 4710W to 4630N 4415W to 5000N
4425W to 5305N 4755W to 5900N 5500W to 6015N 5245W to 5830N 5000W
then eastward.

Iceberg Count

51 to 100 icebergs.

Iceberg Bulletin

Flemish

Issued 2:40 PM EDT 17 April 2026

Iceberg Limit

Iceberg limit at 0000 UTC 18 Apr estimated from Newfoundland near
4655N 5400W to 4500N 5200W to 4440N 4710W to 4630N 4415W to 5000N
4425W to 5305N 4755W to 5900N 5500W to 6015N 5245W to 5830N 5000W
then eastward.

Iceberg Count

Forecasts available to mariners upon request.
Warnings

Warnings (In effect)

Gale warning in effect

Northern Grand Banks

Issued 10:00 AM NDT 18 April 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.

Special ice warning in effect

Northern Grand Banks

Issued 11:30 AM NDT 18 April 2026

Navigators in this marine area should be on the lookout for hazardous ice conditions and take necessary safety precautions. Please refer to the latest ice forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio stations.

Synopsis

Technical Marine Synopsis

Issued 10:00 AM NDT 18 April 2026 Today Tonight and Sunday At 10:00 a.m. NDT today trough located east of the Marine District.
By 3:30 p.m. NDT today departing trough located east of the Marine
District.

At 3:00 a.m. NDT Sunday approaching trough located over southern
Quebec.

At 10:00 a.m. NDT today ridge located on a line north-south over
the Gulf of St. Lawrence.
By 10:00 a.m. NDT Sunday ridge located on a line north-south over
the northern Grand Banks.

Marine Weather Statement

Issued 9:57 AM NDT 18 April 2026 A trough of low pressure east of the marine district will continue to
move eastward today. Strong to gale force northerlies to
northwesterlies over eastern waters behind the trough will diminish
today as the trough departs and a ridge of high pressure builds in
from the west.

On Sunday, the ridge will lie east of Newfoundland and a trough of
low pressure will slowly move across the St. Lawrence River Valley.
Between these two features, strong to gale force southerlies are
expected over western waters.

Marine interests are advised that gale warnings are in effect for
Gulf - Port au Port, Belle Isle Bank, Funk Island Bank, and Northern
Grand Banks.

Marine interests are advised that freezing spray warnings are in
effect for Strait of Belle Isle - eastern half, Northeast Coast,
Belle Isle Bank, and Funk Island Bank.

Atlantic - Newfoundland Area

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