Marine Forecast
Issued 03:00 AM NST 20 December 2025
Today Tonight and Sunday.
Storm warning in effect.
Wind southwest 30 knots increasing to south 35 to 45 early this
morning and to south 45 to 55 this afternoon. Wind diminishing to southwest 35
this evening then veering to northwest 25 to 35 overnight. Wind diminishing to
west 15 to 20 Sunday morning then backing to southwest 15 Sunday
afternoon.
Showers and fog patches this afternoon and this
evening.
Temperatures plus 7 falling to zero Sunday
morning.
Winds
Issued 03:00 AM NST 20 December 2025
Today Tonight and Sunday.
Storm warning in effect.
Wind southwest 30 knots increasing to south 35 to 45 early this
morning and to south 45 to 55 this afternoon. Wind diminishing to southwest 35
this evening then veering to northwest 25 to 35 overnight. Wind diminishing to
west 15 to 20 Sunday morning then backing to southwest 15 Sunday
afternoon.
Waves
Issued 06:00 PM NST 19 December 2025
Tonight and Saturday.
Seas 3 to 5 metres building to 5 to 7 Saturday
afternoon.
Weather & Visibility
Issued 03:00 AM NST 20 December 2025
Today Tonight and Sunday.
Showers and fog patches this afternoon and this
evening.
Air temperature
Issued 03:00 AM NST 20 December 2025
Today Tonight and Sunday.
Temperatures plus 7 falling to zero Sunday
morning.
Ice Forecasts
Northern Grand Banks
Issued 10:00 AM EST 19 December 2025 Today Tonight and Saturday Ice Edge
Ice edge estimated from Newfoundland near 4842N 5305W to 4935N 5326W
to 5012N 5536W to 5125N 5504W to 5349N 5528W to 5633N 6011W to 5928N
6239W to 6200N 5947W then northeastward. Sea ice west of the ice
edge.
Ice Forecasts
Flemish
Issued 10:00 AM EST 19 December 2025 Today Tonight and Saturday Ice Edge
Ice edge estimated from Newfoundland near 4842N 5305W to 4935N 5326W
to 5012N 5536W to 5125N 5504W to 5349N 5528W to 5633N 6011W to 5928N
6239W to 6200N 5947W then northeastward. Sea ice west of the ice
edge.
Ice Coverage
Forecasts available to mariners upon request.
Iceberg Bulletin
Northern Grand Banks
Issued 1:30 PM EST 19 December 2025 Iceberg Limit
Iceberg limit at 0000 UTC 20 Dec estimated from Newfoundland near
5020N 5628W to 5030N 5415W to 5330N 5200W to 5945N 5730W then
northeastward.Iceberg Count
No confirmed icebergs.Iceberg Bulletin
Flemish
Issued 1:30 PM EST 19 December 2025 Iceberg Limit
Iceberg limit at 0000 UTC 20 Dec estimated from Newfoundland near
5020N 5628W to 5030N 5415W to 5330N 5200W to 5945N 5730W then
northeastward.Iceberg Count
Forecasts available to mariners upon request.
Warnings (In effect)
Northern Grand Banks
Issued 03:00 AM NST 20 December 2025'Storm' force winds of 48 to 63 knots are 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 NST 20 December 2025 Today Tonight and Sunday At 3:00 a.m. NST today deepening low 966 mb located over western
Labrador.
By 3:00 a.m. NST Sunday low 948 mb located over eastern Labrador
Sea.
At 3:00 a.m. NST today trough from 966 mb low located on a line
north-south over the Gulf of St. Lawrence.
By 3:00 a.m. NST Sunday trough from 948 mb low located north of
the Marine District.
At 8:00 p.m. NST tonight building ridge located over the Maritimes.
Marine Weather Statement
Issued 2:59 AM NST 20 December 2025 A trough of low pressure associated with a rapidly intensifying low
over Western Labrador will a cross the district today. Strong to gale
force southerlies to southwesterlies will increase to gale to storm
force southerlies ahead of the trough. Winds will shift to gale to
storm force westerlies in its wake and then diminish to moderate to
strong west to southwesterlies as it departs.
Marine interests are advised that storm warnings are in effect for
all waters except Southeastern Grand Banks where a gale warning is in
effect.
Marine interests are also advised that freezing spray warnings are in
effect for Strait of Belle Isle, Gulf waters, Northeast Coast, and
Belle Isle Bank.
Marine interests are further advised that higher than normal water
levels are expected this morning along the west coast of Newfoundland
including the western side of the Great Northern Peninsula, as well
as both sides of the Strait of Belle Isle. This is due to a
combination of high waves and pounding surf, storm surge, and a
higher run of tides.