Isolated Severe Thunderstorms Possible In Southern Ontario

Thunderstorm Forecast, for Southern Ontario. Issued May 19th, 2019.

We are currently tracking the risk of some developing showers and thunderstorms this afternoon and evening with the risk of some isolated severe thunderstorms.

Scattered showers and thunderstorms are expected to develop across Southern Ontario this afternoon and continue into the evening.

Kingston-Brockville-Cornwall Range:

Into the mid-late afternoon, we are closely watching Eastern Ontario near Prince Edward County extending along the United States-Canada border to include Brockville and Cornwall for an isolated thunderstorm. This area is in question as the cells of interest may stay along the border or go further inland into New York state. We have highlighted this area under the 'low' risk for damaging winds (90km/h+) and small hail.

Niagara-Haldimand-Hamilton Range:

In the Niagara, Norfolk, Hamilton, and Haldimand regions, we are watching the 'low' risk for isolated severe thunderstorms. We are expecting most storms in this area to remain non-severe, although based on the wind direction and temperatures, we are expecting an environment which may be capable of supporting a severe thunderstorm. We have highlighted this area under the 'low' risk for damaging winds (90km/h+) and small hail.

***Essex to Bruce County and Simcoe County Range:***

We are expecting developing thunderstorms and a line of thunderstorms to pass through this region. Much of this area is in the 'area of interest' for the best risk of severe thunderstorms today. Environment Canada has issued a severe thunderstorm watch for much of this region. All threats will be possible in this region with the main threats including damaging wind gusts (100km/h+), small to moderate sized hail, heavy rain. An isolated tornado can't be ruled out.

***Muskoka-Algonquin-Haliburton-Kawartha Lakes-Renfrew Range:***

Showers and thunderstorms are expected to develop in this region alongside pass through this region. The environment will be supportive for all weather types with the best risks including wind gusts ranging between 90 and 100km/h+ and small to at times moderate sized hail. An isolated tornado can't be ruled out, especially in the 'area of interest' which extends through Huntsville and Parry Sound.

Manitoulin Island-North Bay Range:

Isolated showers and thunderstorms passing through this region may be capable of producing heavy downpours and gusty winds near 90km/h. An isolated severe thunderstorm can't be ruled out.

Regions marked with "***" are at the most risk.

Please let us know what your experiencing!

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