Marine Forecast
Issued 05:00 PM CST 18 December 2025
Tonight and Friday.
Gale warning in effect.
Wind northeast 15 knots increasing to northeast 25 this evening
and to north 35 Friday morning. Wind diminishing to northwest 30 Friday
evening.
Flurries overnight and Friday.
Freezing spray warning in effect.
Over open water moderate freezing spray beginning this evening
becoming severe overnight.
Low tonight minus 16. High Friday minus 7.
Winds
Issued 05:00 PM CST 18 December 2025
Tonight and Friday.
Gale warning in effect.
Wind northeast 15 knots increasing to northeast 25 this evening
and to north 35 Friday morning. Wind diminishing to northwest 30 Friday
evening.
Waves
Issued 05:00 AM CST 18 December 2025
Today Tonight and Friday.
Outside the ice edge seas 1 to 2 metres building to 2 to 3 early
this afternoon then subsiding to 1 to 2 Friday evening.
Weather & Visibility
Issued 05:00 PM CST 18 December 2025
Tonight and Friday.
Flurries overnight and Friday.
Air temperature
Issued 05:00 PM CST 18 December 2025
Tonight and Friday.
Low tonight minus 16. High Friday minus 7.
Freezing Spray
Issued 05:00 PM CST 18 December 2025
Tonight and Friday.
Freezing spray warning in effect.
Over open water moderate freezing spray beginning this evening
becoming severe overnight.
Ice Forecasts
Issued 11:00 AM EST 18 December 2025 Today Tonight and Friday Ice Edge
Ice edge is outside the forecast region.
Ice Coverage
Ice pressure warning in effect.
9 tenths grey-white ice. Consolidated grey-white ice along parts of
the coasts.
Strong ice pressure in the pack ice in the southwestern section
developing Friday afternoon.
Warnings (In effect)
James Bay - northern half
Issued 5:00 PM CST 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.
James Bay - northern half
Issued 5:00 PM CST 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.
James Bay
Issued 11:00 AM EST 18 December 2025Navigators 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.
Technical Marine Synopsis
Issued 4:45 AM EST 19 December 2025 Today Tonight and Saturday At 1200 UTC Friday dissipating low 978 mb located at 64N 68W.
By 0000 UTC Sunday low 950 mb located at 57N 58W.