ONTARIO: Thunderstorm Forecast for Monday, August 7, 2023
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Beginning early Monday morning and persisting throughout the day, Southern Ontario is expected to be impacted by heavy rainfall. The rainfall could be accompanied by embedded thunderstorms, with most of these storms likely to remain non-severe. However, there are indications that a few of these storms could escalate to marginally severe levels during the afternoon and evening.
The Golden Horseshoe and Eastern Ontario regions are particularly favourable for storm development that could result in heavy rainfall, strong wind gusts, and small hail. The primary concern lies in the potential for flash flooding, as these storms may be persistent and bring extensive rainfall totals exceeding 100mm. Additionally, hail up to the size of nickels and wind gusts reaching 80-90 km/h are also possible threats. Although the tornado risk is expected to be minimal, it can't be entirely ruled out.
The forecast does come with some uncertainty regarding storm development later in the day, which will significantly influence the actual threat to our region. Therefore, it's essential to keep a close eye on our updated forecast, which will be released Sunday evening.
