Southern Ontario: Thunderstorm Outlook for Monday, September 13, 2021

Forecast Discussion

Pop-up thunderstorms are possible across Southwestern Ontario and into the Niagara region on Monday. They should remain predominantly non-severe with strong wind gusts, small hail and heavy downpours. It’s not out of the question that we see an isolated severe storm mainly due to the heavy rainfall potential, but it’s not widespread enough to include on the map.