10:48 AM EDT Monday 15 July 2024 Severe Thunderstorm Warning in effect for: London - Parkhill - Eastern Middlesex County At 10:48 AM EDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing heavy rain. Heavy downpours can cause flash floods and water pooling on roads. 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 warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing 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 in Ontario, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm . For more information: ontario.ca/page/be-prepared-emergency . 9:18 AM EDT Monday 15 July 2024 Heat Warning in effect for: London - Parkhill - Eastern Middlesex County A heat event will continue today and possibly into Tuesday for some areas. A humid airmass has reached the region. Daytime maximum temperatures are expected to be near 29 degrees Celsius with humidex values near 40. There will be little relief at night as minimum temperatures are expected to be near 20 degrees Celsius. Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high risk category. A cooler airmass is expected to arrive Tuesday. 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. Limit direct sun exposure. Shade yourself by wearing a wide-brimmed, breathable hat and/or an umbrella. Never leave people, particularly children, or pets inside a parked vehicle. Ask a health professional, such as a pharmacist or physician, how medications or health conditions can affect your risk in the heat. When it?s hot, eat cool, light meals. Avoid using the oven. 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 10:50 AM EDT Monday 15 July 2024 Severe Thunderstorm Watch in effect for: London - Parkhill - Eastern Middlesex County Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain. Hazards: Nickel sized hail. Wind gusts near 90 km/h. Local rainfall amounts approaching 50 mm. Timing: This morning. Discussion: Thunderstorms this morning have developed over southwestern Ontario and will continue tracking east over the area. 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 .