Severe Thunderstorm Watch

Severe thunderstorms have fired up in the muggy air this afternoon. Radar at 3pm is showing two clusters, one moving into southern Quebec south of the St. Lawrence River, and the second cluster just moving through the south end of Ottawa and stretching into Lanark County. Both clusters are moving east and will affect all of eastern Ontario and southern Quebec. A severe thunderstorm warning has been posted for Ottawa and Smiths Falls. I imagine it will be extended eastward into Leeds & Grenville and S D & G. The second cluster has prompted a Severe Thunderstorm Watch for the counties south of Montreal to the US Border. High winds and heavy rain with small hail is possible.