Special weather statement issued 4:24 PM EDT Monday 27 August 2018 by Environment Canada.
- Sault Ste. Marie – St. Joseph Island
- Searchmont – Montreal River Harbour – Batchawana Bay
Strong thunderstorms in some areas beginning near midnight.
A low pressure system from southern Minnesota will move northeastward to cross Lake Superior tonight. Strong thunderstorms developing south of the low are forecast to track across the portions of the regions overnight. There is uncertainty as to exactly which regions will have the greatest chance of being affected.
Some storms will have potential to produce damaging winds. Local rainfall amounts in excess of 50 mm will also be possible.
Environment Canada will monitor this situation closely. Watches may be issued this evening as the potential severe event draws nearer and the expected track of the storms becomes more apparent.
updated 9:00 pm.
As mentioned, a system crossing Lake Superior late Monday will bring a cluster of strong to severe thunderstorms east of Superior and northeast of Georgian Bay Monday overnight. The main risks will be heavy rainfall with multiple rounds of storms, but hail and wind gusts of 90-100 km/h are possible. Embedded severe storms may also produce a tornado, so it is best to be prepared and pay close attention to watches and warnings as these storms will occur in the overnight hours.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@canada.ca or tweet reports using #ONStorm.