Northern Ontario: Thunderstorm Outlook for Saturday, July 24, 2021

Forecast Discussion

Thunderstorm activity that has brought significant severe weather to parts of Northwestern Ontario during the day on Friday will continue to track eastward overnight and into early Saturday morning. This line of storms should be non-severe for the most part as it affects Northeastern Ontario throughout the morning although a few isolated pockets of damaging wind gusts can’t be ruled out mainly during the early morning.

A secondary risk of storms is expected for Northeastern Ontario during the afternoon and evening on Saturday. This risk could bring the potential for a few isolated storms in an area that stretches from the eastern shoreline of Lake Superior and northward towards James Bay. Main threats with these storms include some moderate-sized hail and damaging wind gusts along with significant rainfall totals ranging from 25-50mm. The storms will come to an end after sunset once they move out over Quebec and out of Northern Ontario.