10:59 PM EDT Saturday 27 July 2024 Heat Warning in effect for: City of Thunder Bay A heat event continues into Sunday. Maximum daytime temperatures of near 30 degrees Celsius are expected, with humidex values approaching 37. Overnight minimum temperatures will be 17 to 20 degrees Celsius. There is a possibility that showers and thunderstorms may keep maximum daytime temperatures a few degrees cooler on Sunday for parts of northwestern Ontario. At this time, a cooler and less humid airmass is expected to arrive Sunday night. Extreme heat can affect everyone?s health. The health risks are greater for older adults, infants and young children, pregnant people, people with physical and/or mental illnesses, and people with disabilities or mobility issues. 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 .
