ONTARIO: Thunderstorm Forecast for Monday, July 24, 2023

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FORECAST DISCUSSION

On Monday afternoon and evening, widespread pop-up thunderstorm activity is on the horizon across Eastern and Central Ontario. The latest data indicates that the environment could support the development of some strong storms, bringing with them a slight severe risk, particularly in the Ottawa Valley region. There is also an isolated severe risk extending into the GTA and parts of Southwestern Ontario from Orangeville through K/W and into St. Thomas.

⛈️ Potential Threats

  • Hail: Hailstones up to the size of toonies could be possible, posing a risk to vehicles and properties.

  • Wind Gusts: Be prepared for gusts reaching up to 100 km/h, which may result in tree damage and power disruptions.

  • Heavy Rainfall: Localized downpours could lead to significant rainfall totals, ranging from 50-75mm within just a few hours.

🌪️ Tornado Potential

An isolated tornado can’t be ruled out although the risk is fairly low. There is also the possibility of funnel clouds developing with these storms. In rare cases, funnel clouds may touch down and become landspout tornadoes. If you spot a rotating cloud or funnel cloud, please take immediate precautions and seek shelter.