Eastern Lake Superior
Forecast
Marine Forecast
Issued 06:30 PM EDT 12 May 2025
Tonight and Tuesday.
Strong wind warning in effect.
Wind southeast 15 knots increasing to southeast 20 this evening then diminishing to southeast 15 early Tuesday morning. Wind increasing to southeast 20 Tuesday evening.
Waves
Issued 06:30 PM EDT 12 May 2025
Tonight and Tuesday.
Waves 1 metre building to 1.5 this evening then subsiding to 0.5
to 1 Tuesday morning. Waves building to 1.5 Tuesday evening.
Extended Forecast
Issued 06:30 PM EDT 12 May 2025
Wednesday
Wind southeast 20 knots.
Thursday
Wind southeast 15 knots increasing to
southeast 20 late in the day.
Friday
Wind southeast 20 knots.
Ice Forecast*
Issued 12:00 PM EDT 12 May 2025 Today Tonight and Tuesday Ice free.
*Ice Forecast and Warnings also apply to U.S. waters
Stay connected
Weather Conditions
Zoom-in to make a selection

Legend:


Ice Conditions
*Ice Forecast and Warnings also apply to U.S. waters
Ice Forecasts
Issued 12:00 PM EDT 12 May 2025 Today Tonight and TuesdayIce Coverage
Ice free.
Warnings
Warnings (In effect)
Strong wind warning in effect
Eastern Lake Superior
Issued 6:30 PM EDT 12 May 2025'Strong' winds of 20 to 33 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.
Synopsis
Technical Marine Synopsis
Issued 6:30 PM EDT 12 May 2025 Tonight and Tuesday At 6:30 p.m. EDT tonight ridge located on a line north-south overeastern Ontario.
By 6:30 p.m. EDT Tuesday departing ridge located off the Eastern
Seaboard.
At 6:30 p.m. EDT tonight low 996 mb located over southern Alberta.
By 6:30 p.m. EDT Tuesday low 995 mb located over northwestern
Ontario.
Great Lakes - Lake Superior Area
Another Region
- Date modified: