Marine Forecast
Issued 05:00 PM CST 19 December 2025
Tonight and Saturday.
Wind northwest 30 knots diminishing to northwest 20 near
midnight then backing to west 15 early Saturday morning. Wind diminishing to
light late Saturday morning then becoming northeast 15 Saturday
evening.
Scattered flurries.
Freezing spray warning in effect.
Over open water severe freezing spray ending Saturday
morning.
Temperatures minus 8 falling to minus 17 Saturday
morning.
Winds
Issued 05:00 PM CST 19 December 2025
Tonight and Saturday.
Wind northwest 30 knots diminishing to northwest 20 near
midnight then backing to west 15 early Saturday morning. Wind diminishing to
light late Saturday morning then becoming northeast 15 Saturday
evening.
Waves
Issued 05:00 PM CST 19 December 2025
Tonight and Saturday.
Over open water seas 3 metres subsiding to 2 late overnight and
to 1 or less Saturday morning.
Weather & Visibility
Issued 05:00 PM CST 19 December 2025
Tonight and Saturday.
Scattered flurries.
Air temperature
Issued 05:00 PM CST 19 December 2025
Tonight and Saturday.
Temperatures minus 8 falling to minus 17 Saturday
morning.
Freezing Spray
Issued 05:00 PM CST 19 December 2025
Tonight and Saturday.
Freezing spray warning in effect.
Over open water severe freezing spray ending Saturday
morning.
Ice Forecasts
Issued 11:00 AM EST 19 December 2025 Today Tonight and Saturday Ice Edge
Ice edge is outside the forecast region.
Ice Coverage
Ice pressure warning in effect.
8 tenths grey-white ice. Consolidated grey-white ice along parts of
the coasts.
Strong ice pressure in the pack ice developing this afternoon and
easing overnight.
Warnings (In effect)
James Bay - northern half
Issued 5:00 PM CST 19 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 19 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 PM EST 19 December 2025 Tonight and Saturday At 0000 UTC Saturday dissipating low 987 mb located at 65N 68W.
At 0000 UTC Sunday approaching low 948 mb located at 57N 57W.