Durham Region could be in for some rough weather over the next two days, with Environment Canada warning that severe thunderstorms may bring hail, strong winds, and heavy rainfall to southern Ontario.
The national weather agency has issued storm outlooks for both Wednesday and Thursday, with the Greater Toronto Area, including Durham Region, in the path of potentially active weather through the end of the week.
On Wednesday afternoon and evening, isolated thunderstorms are expected across Durham and the surrounding areas. The GTA could see locally heavy downpours with up to 25 mm of rain possible in some areas. While Durham is not currently in the highest risk zone, conditions could change quickly as storms develop throughout the day.
Further southwest, including London and Windsor, the threat is more significant. Severe thunderstorms in those areas could produce rainfall amounts up to 40 mm, hail up to 2 cm in diameter, and wind gusts between 70 and 90 km/h. Power outages are possible in the hardest-hit communities.
Northwestern Ontario faces an even more intense threat, with the potential for wind gusts up to 110 km/h, hail up to 3 cm, and a risk of tornadoes near Kenora.
But Durham residents should not let their guard down on Thursday. Environment Canada says thunderstorms are expected to continue overnight Wednesday into Thursday morning and may persist through the day. The Greater Golden Horseshoe, which includes Durham Region, could see storms redevelop Thursday evening with the potential for wind gusts up to 90 km/h, hail up to 3 cm in diameter, and rainfall amounts up to 50 mm.
If those severe thunderstorms materialize over Durham Region, residents should be prepared for possible power outages, localized flooding in low-lying areas, and hazardous driving conditions. Secure loose outdoor furniture and items that could be blown around by strong gusts.
Durham Region residents are encouraged to monitor Environment Canada alerts throughout Wednesday and Thursday, have emergency supplies ready, and avoid non-essential travel during active storm cells. Keep devices charged in case of power disruptions, and check on neighbours who may need assistance during severe weather events.
The severe thunderstorms Durham Region outlook serves as a reminder that June can bring volatile weather patterns to southern Ontario, and staying informed is the best way to stay safe.
