11:50 AM EDT Friday 12 July 2024 Heat Warning in effect for: Sioux Lookout - Eastern Lac Seul A heat event will persist into this weekend. A hot airmass has arrived over northwestern Ontario. Daytime maximum temperatures are expected to be near 30 degrees Celsius, with humidex values near 36. There will be little relief at night as minimum temperatures of 18 to 20 degrees Celsius are expected. A cooler airmass is expected to arrive Sunday or Monday. Extreme heat can affect everyone?s health. Drink plenty of water regularly, even before you feel thirsty to decrease your risk of dehydration. Thirst is not a good indicator of dehydration. Reduce your heat risk. Schedule outdoor activities during the coolest parts of the day. Never leave people, particularly children, or pets inside a parked vehicle. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm . Watches 2:26 PM EDT Friday 12 July 2024 Severe Thunderstorm Watch in effect for: Sioux Lookout - Eastern Lac Seul Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts and large hail. Timing: this afternoon into this evening Hazard: Wind gusts up to 90 km/h. Nickel size hail. Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Locally heavy rain is also possible. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches. Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm . For more information: ontario.ca/page/be-prepared-emergency .
