'Prolonged atmospheric river' prompts weather alert for B.C.'s Sea to Sky Highway - Vancouver Sun

Rainfall warnings are now in effect for parts of northwest Alberta as an active weather period unfolds across the Prairies. Areas under the warnings include Hinton, Grande Cache, and Grande Prairie, with some regions preparing for over 75-100 mm of rain by Friday night. Meanwhile a severe thunderstorm threat is in place for extreme southern Saskatchewan and Manitoba on Thursday, with a potential for tornado development. DON'T MISS: Staying safe from flash floods, a serious and deadly hazardBe sure to stay alert to the changing conditions, and check for any weather warnings in your area. Thursday into Friday: Severe thunderstorms with a heightened flood and tornado riskA low pressure system is driving moisture and instability across Alberta, Saskatchewan, and Manitoba, leading to widespread showers and thunderstorms Thursday. The heaviest rainfall is expected in Alberta’s Elbow region, while Edmonton, Calgary, and Regina may see lesser amounts of 5-15 mm. Severe thunderstorms are anticipated in southeastern Saskatchewan and southwestern Manitoba Thursday afternoon, posing risks of large hail, strong winds, and localized heavy rainfall.