CJOB's John Copsey reporting
7/31/2010
A severe thunderstorm warning is in effect this hour for Morden, Winkler, Altona, Emerson, and Morris.
Large hail, damaging winds, and rainfall in excess of 50 mm are all possible with this storm.
A severe thunderstorm was developing just south of Plum Coulee at 9:30 pm, and moving east at 20 km/h.
The remainder of southern Manitoba remains under a severe thunderstorm watch, expected to last until midnight tonight.
The storm systems are a result of a hot and unstable airmass moving west-to-east over Southern Manitoba.
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