Canada: Red heat warnings in place for parts of southern Manitoba and western Ontario, Aug. 25

Environment Canada is maintaining red heat warnings (the highest level on a three-tier scale) across southern Manitoba and western Ontario, Aug. 25. Authorities could update and possibly extend the coverage of weather alerts over the coming days.

The high temperatures may result in increased energy and water demand and a heightened risk of heat-related illnesses, such as heat exhaustion and heat stroke. The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout the region. Very high temperatures may warp rail tracks and force passenger and freight trains to operate at reduced speeds. Major flight disruptions are unlikely, but general aviation disruptions are possible, and some airfreight carriers could reduce cargo loads. High temperatures could lead to an increased demand for electricity, which might trigger localized brownouts or blackouts, exacerbating hazardous conditions when air conditioning is no longer possible.