Rob Hampson

#ONStorm #ONwx 🔴🌪️ Significant Severe Weather Outbreak Could Bring Tornadoes to Southern Ontario Wednesday 📅 Tuesday, September 1 - Wednesday, September 2, 2026 ⤵️ VIEW THE PRELIMINARY FORECAST: instantweatherinc.com/articl… - Brennen

#ONStorm #ONwx ‼️🌪️ BREAKING: Environment Canada Forecasting HIGH Risk for Severe Thunderstorms Including Tornado Risk for Southern Ontario on Wednesday As we highlighted this morning, Wednesday is shaping up to bring potentially the strongest severe thunderstorm risk we’ve seen in Southern Ontario so far this year. Environment Canada has just released its latest thunderstorm forecast for tomorrow, showing a widespread ‘high’ risk across portions of Southwestern and Central Ontario, along with the Golden Horseshoe. Hazards within the high-risk zone include 110-130 km/h wind gusts, up to golf ball-sized hail, 30-50 mm of rainfall and a tornado risk. Locations within this zone include Sarnia, London, Goderich, Kincardine, Owen Sound, Collingwood, Orangeville, Guelph, Kitchener, Woodstock, Hamilton, Niagara, Mississauga, Toronto, Newmarket, Barrie, Orillia, Peterborough and Oshawa. Surrounding areas, including Deep Southwestern Ontario, northern portions of Central Ontario and southern portions of Eastern Ontario, are under a ‘moderate’ risk for severe thunderstorms. Hazards within the moderate-risk zone include 100-120 km/h wind gusts, up to golf ball-sized hail, 30-50 mm of rainfall and a tornado risk. Locations within this zone include Windsor, Leamington, Chatham, Muskoka, Bancroft, Belleville, Kingston and Brockville. For the Ottawa Valley, there is a ‘minor’ severe risk tomorrow, where we could still see some isolated marginally severe thunderstorms. However, the strongest severe weather threat is expected to remain south and west of the region. Hazards within the minor-risk zone include 70-90 km/h wind gusts, up to toonie-sized hail and 20-40 mm of rainfall. The main window for severe thunderstorms tomorrow is expected to be during the afternoon and early evening. However, there is also the potential for storms during the early morning hours, particularly across Southwestern Ontario. Some of these morning storms could also pose a severe weather risk. We are working on a detailed forecast that will break down the timing, locations and threats in more detail, and we’ll have that posted later today. Stay tuned! - Brennen