Per the storm prediction centre, a cold front will be moving through the area shortly. That combined with a number of other dynamics have created an environment in Westman this afternoon that's favourable for supercell development ie severe storms.
The watch below was issued by EC at 10:29 this AM. Again worth pointing out the difference between a watch and a warning. A watch is just a statement that conditions are right for severe storms to develop somewhere in Southwestern MB... not a statement that something will for-sure be occuring in any specific place.
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Severe thunderstorms expected to develop this afternoon and continue into the evening.
This is an alert to the potential development of severe thunderstorms with large hail and damaging winds.
Monitor weather conditions..Listen for updated statements. If threatening weather approaches take immediate safety precautions.
A trough of low pressure approaching from Saskatchewan is expected to trigger severe thunderstorms this afternoon over Western Manitoba. These storms will track into the Red River Valley and the Interlake areas by late afternoon. Large hail, strong winds and heavy downpours will be possible with these storms.
http://www.weatheroffice.gc.ca/warnings/report_e.html?mb7
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