Severe Thunderstorms are expected this evening for a large part of southern Manitoba as a cold front drives into a hot and humid airmass. Severe Thunderstorms Watches and warnings are already in place for western Manitoba, into the interlakes. Watches and warnings may be expanded east as the evening continues. https://weather.gc.ca/warnings/index_e.html?prov=mb (Details for alerts).A Strong Risk of severe Thunderstorms are expected in much of southwestern Manitoba into the Red River Valley with large hail up to too or possibly golf ball size, damaging winds in excess of 80 to 90km/h and torrential rainfall with intense and dangerous frequent lightning. A odd weak tornado or 2 cannot be ruled out. A smaller risk appears to occur to the east where the storms will be weaker, marginal size hail possibly penny to toonie size hail, moderate to heavy downpours and occasional to Moderate amounts of lightning and wind gusts below 70km/h.
Thunderstorms have already developed in southern Manitoba and several of them in North Dakota which have already become very severe, judging by there movement they are likely going to be moving into Southern Manitoba within the next few hours. Once thunderstorms organize enough there is a possibility they may form into a squall line with Boeing segments potentially allowing for dangerous wind gusts up to 100+km/h large hail up to ping pong ball or golf ball size hail, and heavy rainfall. Dangerous frequent lightning is also possible. Thunderstorms should weaken as they move east into the late evening and overnight. Cooler air should follow behind this as temperatures drop into the low to mid teens. Remember "Large hail can damage property and cause injury. Very strong wind gusts can damage buildings, down trees and blow large vehicles off the road. Intense lightning is likely with any thunderstorm that develops. Remember, severe thunderstorms can produce tornadoes. Heavy downpours can cause flash floods and water pooling on roads. Be prepared for severe weather. Take cover immediately, if threatening weather approaches. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors!
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ec.storm.ec@canada.ca or tweet reports using #MBStorm." https://weather.gc.ca/warnings/report_e.html?mb8
