Nocturnal thundershower risk Monday evening for Calgary

AFTERNOON UPDATE: There are few changes from this morning's edition, but with the low crossing out, we'll experience a few shifts; for one, a weak rise along the southern foothills may drive storms from Highway 22 across Highway 2, including Calgary; these are mostly probable past midnight, preceded by the heaviest periods of showers approaching midnight, still. Rainfall totals and temperatures require little in the way of adjustment. Calgary still faces at least 10 millimetres of rain tonight.