Northern Ontario: Thunderstorm Outlook for Wednesday, August 18, 2021

Forecast Discussion

Thunderstorm activity including a few isolated severe storms is expected across parts of Northern Ontario stretching from the Manitoba border through to the Quebec border on Wednesday. The main risk will be during the afternoon and evening hours, but we could see some quite strong storms in the morning as they track into the province from Manitoba. There is also the risk of an isolated tornado for parts of Northwestern Ontario including Ear Lake, Sandy Lake and Fort Hope. Thunderstorms may continue overnight and into Thursday morning, but it’s unclear how strong they will be.