As cool air begins to cut into surging heat and humidity from the Great Lakes to the Northeast, locally severe thunderstorms will affect some communities and may disrupt travel.
Many of the storms will bring brief gusty winds, downpours and a few lightning strikes. However, a small number of the storms can be locally severe with damaging wind gusts, hail, flash flooding and frequent lightning strikes.
During Wednesday, the storms fired around the I-90 corridor of the United States from Chicago to Albany, N.Y., northern New England and from Toronto to Montreal and Quebec City, Canada.
On Thursday, storms will reach from Pennsylvania to Maine and northern New Brunswick, Canada. after affecting part of the I-81 corridor in Pennsylvania and New York state during the afternoon, the greatest chance of regional travel disruptions and severe weather along the I-95 corridor will be during the evening drive.
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