Alberta Soaked: 100mm+ Rain Threatens Edmonton Flooding

A significant rainfall event is poised to impact central Alberta through Sunday, with the Edmonton area expected to receive the brunt of the downpour. Rainfall totals could easily surpass 100 mm in some locations, increasing the threat of localized flooding. Edmonton specifically has the potential to record one of its top-ten rainiest June days if Sunday's precipitation reaches over 46.7 mm.

The stationary low-pressure system near the Alberta-Saskatchewan border will generate a persistent band of heavy rain, with rates potentially reaching 5-10 mm per hour on Saturday night and continuing into Sunday. While significant river flooding is not anticipated, urban areas may experience challenges such as ponding on roads and overwhelmed storm drains. High streamflow advisories are currently in effect across numerous waterways in the region.

In the Rockies, cooler temperatures might bring wet snow above 2,200 meters, with this wintry precipitation expected to subside by Monday. Meanwhile, southern Saskatchewan could experience thunderstorms with small hail, gusty winds, and heavy rainfall due to moderate instability and a stationary front.