ONTARIO: Thunderstorm Forecast for Saturday, June 24, 2023
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FORECAST DISCUSSION
Pop-up thunderstorms are expected across much of Southern Ontario during the afternoon and evening on Saturday. These storms are likely to be quite weak and localized so not everyone will see them. Those that do see them can expect small hail, lightning and heavy rainfall.
The environment is favourable for the development of funnel clouds as well. While funnel clouds don’t directly pose a risk to the ground, they can touch down in rare cases and become a landspout tornado.
Landspout: A landspout is a type of tornado that forms under a weak thunderstorm. Unlike traditional tornadoes, which develop from supercell thunderstorms and are associated with a rotating updraft called a mesocyclone, landspouts form from non-supercell storms and do not have a mesocyclone. These tornadoes are generally weaker and shorter-lived than their supercell counterparts but can still pose a threat to property and life, with wind speeds occasionally reaching up to 160 km/h.
