4:14 AM PDT Thursday 19 July 2018 Special weather statement in effect for:
Heavy rainfall and thunderstorms beginning later this afternoon...
A low pressure system will slowly approach central BC today then drift into the Prairies by Saturday. Bands of moisture wrapping around this system will produce heavy rain beginning later this afternoon, particularly along the eastern slopes of the Rocky Mountains across the McGregor and Yellowhead regions.
Widespread rainfall totals up to 30 mm are expected by Friday night. Additional rainfall amounts are expected Friday night followed by a clearing trend on Saturday as the weather system departs into the Prairies. There is some uncertainty regarding rainfall amounts as a slight shift in the storm track could shift heavy precipitation north or south of populated areas.
Thunderstorms will also play a large role in the weather this weekend with locally intense downpours, gusty winds and lightning.
Key points to be mindful of this weekend... -heavy rainfall will lead to rapid swelling of small creeks and river systems -localized flooding is possible in low-lying areas and over paved surfaces -thunderstorms pose a hazard to outdoor events/recreational activities. Safe places during a thunderstorm include solid buildings with wiring and plumbing or all-metal vehicles with the windows rolled up.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to BCstorm@canada.ca or tweet reports using #BCStorm.