Flooding, large hail and wind concerns with southern Ontario severe storm risk

The main hazards in severe storms will be large hail, damaging wind gusts, and heavy downpours--elevating the localized flooding risk. Widespread storm risk Tuesday, risk of isolated tornadoTuesday will features multiple rounds of thunderstorms across Ontario, with initial, warm-front storms developing early Tuesday morning. Ontario storm risk map TuesdayTuesday afternoon, in the warm sector of the low, instability builds to moderate-to-high levels, initiating multiple lines of thunderstorms across southern Ontario ahead of the trailing cold front. The highest tornado risk will likely exist stateside, so heavy rain, localized flooding and damaging winds remain the primary threats in Ontario on Tuesday. Confidence is high for multiple storm clusters over the next couple of days, but lower regarding their severity.