Severe thunderstorm threat hits the southern Prairies
Wednesday, June 18, 2014, 9:54 AM - A slow moving disturbance pushing in from the U.S. will feed moist, unstable air to the southern Prairies Wednesday.
"Strong thunderstorms are expected to develop over Montana and North Dakota and spread northward late this afternoon and this evening," warned Environment Canada in a special weather statement early Wednesday. "These storms will be slow moving thus there will be localized heavy rainfall from these storms."
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Due to fluctuations in the intensity of these storms as they move northward, rainfall amounts will be highly variable, EC adds.
Up to 30 mm of rain is possible in some areas, with locally higher amounts that fall under a slow moving storm.
"Storms should then push north and eastward into Manitoba later tonight," EC adds.
The risk for severe weather is possible in southeastern Saskatchewan and southwestern Manitoba through the evening hours.
FLOODING IN ALBERTA
Meanwhile, in southern Alberta, forecasters are keeping a close eye on water levels as heavy rain has been soaking the region since Tuesday.
Local states of emergency have been issued and overland flooding in Claresholm prompted evacuation notices Wednesday morning.
"The Town of Claresholm has activated a Reception Centre at the Claresholm Arena located at 4912 – 2nd Street East," the town said Wednesday. "We are currently experiencing overland flooding and many homes are under water. The sewer system is also starting to back-up. All residents who are experiencing overland flooding are encouraged to evacuate to the Arena."