Southwestern Grand Banks
Forecast
Marine Forecast
Issued 03:00 AM NDT 18 April 2026
Today Tonight and Sunday.
Wind northwest 15 to 20 knots veering to northeast 15 to 20 early this morning then to southeast 15 to 20 this evening. Wind increasing to southeast 25 Sunday morning.
Showers and fog patches Sunday evening.
Waves
Issued 06:00 PM NDT 17 April 2026
Tonight and Saturday.
Seas 1 to 2 metres except 2 to 3 over northeastern sections
overnight and Saturday.
Extended Forecast
Issued 03:00 AM NDT 18 April 2026
Monday
Wind south 25 knots.
Tuesday
Wind variable 15 to 20 knots.
Wednesday
Wind variable 15 to 20 knots increasing to
northwest 25.
Ice Forecast
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Weather Conditions
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Ice Conditions
Ice Forecasts
Southwestern Grand Banks
Issued 10:00 AM EDT 17 April 2026 Today Tonight and SaturdayIce Edge
Ice edge estimated from Newfoundland near 4745N 5243W to 4446N 4722Wto 4638N 4624W 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
Bergy water.
Ice Forecasts
Tail of the Grand Banks
Issued 10:00 AM EDT 17 April 2026 Today Tonight and SaturdayIce Edge
Ice edge estimated from Newfoundland near 4745N 5243W to 4446N 4722Wto 4638N 4624W 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
Southwestern Grand Banks
Issued 2:40 PM EDT 17 April 2026Iceberg Limit
Iceberg limit at 0000 UTC 18 Apr estimated from Newfoundland near4655N 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
No confirmed icebergs except less than 10 icebergs north of theiceberg limit.
Iceberg Bulletin
Tail of the Grand Banks
Issued 2:40 PM EDT 17 April 2026Iceberg Limit
Iceberg limit at 0000 UTC 18 Apr estimated from Newfoundland near4655N 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
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 3:00 AM NDT 18 April 2026 Today Tonight and Sunday At 3:00 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 3:00 a.m. NDT today ridge located on a line northwest-southeast
over western Labrador.
By 3:00 a.m. NDT Sunday ridge located on a line north-south over
the northern Grand Banks.
Marine Weather Statement
Issued 2:59 AM NDT 18 April 2026 A trough of low pressure east of the marine district will continue tomove 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 Western Labrador.
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
- Anticosti - eastern half
- Anticosti - western half
- Banquereau
- Belle Isle Bank
- Bras d'Or Lakes
- Cabot Strait - northern half
- Cabot Strait - southern half
- Chaleur - Miscou
- Eastern Shore
- East Coast - Cape St. Francis and south
- East Coast - north of Cape St. Francis
- Fourchu
- Funk Island Bank
- Gulf - Magdalen
- Gulf - Port au Port
- Lake Melville
- Laurentian Fan
- Mid Labrador Coast
- Northeast Coast - Cape St. John and south
- Northeast Coast - north of Cape St. John
- Northeast Gulf
- Northern Grand Banks
- Northumberland Strait - eastern half
- Northumberland Strait - western half
- Sable
- Southeastern Grand Banks
- Southwestern Grand Banks
- Southwest Coast
- South Coast
- South Labrador Coast
- South Labrador Sea
- Strait of Belle Isle - eastern half
- Strait of Belle Isle - western half
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