Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Southern Georgian Bay

Issued 10:30 AM EDT 23 August 2026

'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.

Watches (In effect)

Waterspout watch in effect

Southern Georgian Bay

Issued 07:49 AM EDT 23 August 2026 Conditions are favourable for the development of waterspouts today through tonight. There is the potential that the risk of waterspouts will continue into Monday as well.

Waterspouts are generally short-lived in nature, typically lasting 20 minutes or less.

Waterspouts sometimes appear as funnel clouds with swirling water visible near the surface.

Waterspouts are generated by weak rotation under rapidly growing clouds or weak thunderstorms. Under favourable conditions, this weak rotation could intensify and become a tornado.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

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Technical Marine Synopsis

Issued 10:30 AM EDT 23 August 2026 Today Tonight and Monday At 10:30 a.m. EDT today low 1004 mb located near Lake Nipissing.
By 10:30 a.m. EDT Monday low 1007 mb located over western Quebec.

At 10:30 a.m. EDT today ridge located on a line north-south over
northwestern Ontario.
By 10:30 a.m. EDT Monday ridge located on a line northeast-southwest
over Lake Nipigon.