Thunderstorm Outlook
Valid: Friday, July 10, 2020
Forecaster: Brennen Perry
Issued: Friday, July 10, 2020 - 1:05PM
Thunderstorm outlook map
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Timing |
Southwestern: 1PM - 10PM
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Not sure what region you are in? Click here for a map showing the regions across Southern Ontario. Northeastern Ontario is north of North Bay (not shown on map).
Thunderstorm Threatcast
Thunderstorm Confidence |
Moderate (50%) |
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Severe Confidence |
Low (25%) |
Tornadoes |
Funnel Cloud/Landspout Potenital |
Max Wind Gusts |
90+ kmh | 56+ mph |
Max Hail Size |
Quarter |
Max 24-hr Rainfall |
~100 mm | ~4" |
Forecast Discussion
Pop-up slow-moving thunderstorms are possible this afternoon and evening across parts of Southwestern and Central Ontario. The main threats are heavy rainfall (100+mm) that could cause flash flooding, especially if these storms ‘train’ over a particular area for several hours along with damaging wind gusts. Small hail is also possible but we don’t expect anything larger than nickel or quarter size hail. The tornado risk is low, but the environment is favourable for the development of funnel clouds and in some cases can become a brief landspout tornado. There is also the possibility of some storm development over Lake Erie late in the evening that could affect the GTA and Niagara region, but the severity of the storms is questionable and if anything will at most present a flooding threat.
