Northern Ontario: Thunderstorm Outlook for Wednesday, June 23, 2021

Forecast Discussion

A line of storms is likely to develop over eastern Manitoba and further strengthen as it moves into Northwestern Ontario during the early evening on Wednesday. One or two of these storms could have the potential to reach severe levels with damaging wind gusts, large hail and heavy rainfall. The severe threat will end just before midnight as the storms weaken while tracking eastward towards Lake Superior. Some non-severe thunderstorms will linger well past midnight and into the overnight hours, but they shouldn’t post much of a threat.