Marine Forecast
Issued 05:00 AM EST 18 December 2025
Today Tonight and Friday.
Gale warning in effect.
Wind west 35 knots diminishing to southwest 20 to 25 late this
afternoon. Wind southwest 20 to 30 tonight. Wind southwest 25 to 30
Friday.
Snow early this morning changing to flurries and ending
late this morning. Flurries overnight and Friday. Visibility 1 mile or less in
precipitation.
Freezing spray warning in effect.
Outside the ice edge moderate freezing spray becoming severe
this morning then becoming moderate after midnight.
High today minus 3. Low tonight minus 14. High Friday
minus 7.
Winds
Issued 05:00 AM EST 18 December 2025
Today Tonight and Friday.
Gale warning in effect.
Wind west 35 knots diminishing to southwest 20 to 25 late this
afternoon. Wind southwest 20 to 30 tonight. Wind southwest 25 to 30
Friday.
Waves
Issued 05:00 PM EST 17 December 2025
Tonight and Thursday.
Seas 2 to 3 metres building to 3 to 4 late overnight then
subsiding to 2 to 3 late Thursday afternoon.
Weather & Visibility
Issued 05:00 AM EST 18 December 2025
Today Tonight and Friday.
Snow early this morning changing to flurries and ending
late this morning. Flurries overnight and Friday. Visibility 1 mile or less in
precipitation.
Air temperature
Issued 05:00 AM EST 18 December 2025
Today Tonight and Friday.
High today minus 3. Low tonight minus 14. High Friday
minus 7.
Freezing Spray
Issued 05:00 AM EST 18 December 2025
Today Tonight and Friday.
Freezing spray warning in effect.
Outside the ice edge moderate freezing spray becoming severe
this morning then becoming moderate after midnight.
Ice Forecasts
Issued 11:00 AM EST 18 December 2025 Today Tonight and Friday Ice Edge
Ice edge estimated from 6200N 5947W to 6312N 5752W then
northeastward. Sea ice northwest of the ice edge.
Ice Coverage
1 tenth new ice. Consolidated grey ice in a few sheltered bays.
Warnings (In effect)
West Brevoort - northern half
Issued 05:00 AM EST 18 December 2025'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.
West Brevoort - northern half
Issued 05:00 AM EST 18 December 2025Moderate or severe freezing spray is 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 4:45 AM EST 18 December 2025 Today Tonight and Friday At 1200 UTC Thursday low 970 mb located at 65N 65W.
By 0000 UTC Saturday low 991 mb located at 65N 68W.
By 0000 UTC Saturday low 994 mb located at 75N 65W.
At 1200 UTC Thursday ridge from 1027 mb high located from 55N 96W
to 54N 81W.
By 0000 UTC Saturday high 1015 mb located at 53N 88W.