00:00A taste of autumn is arriving across parts of the Midwest and Northeast.
00:04Cooler, less humid Canadian air is moving into the Great Lakes region.
00:08Temperatures will drop from the usual 80s into the 70s and low 80s.
00:12Some areas could see overnight temperatures fall into the 40s and 50s.
00:16But the cool-down comes with a weather risk.
00:19Gusty thunderstorms, heavy rain, and flash flooding are possible.
00:22The greatest rainfall threat is expected across parts of the Mid-Atlantic.
00:26Cities including Norfolk, Washington, D.C., and Philadelphia could be affected.
00:32The risk may also extend toward New York City and Boston.
00:35Storms near the Great Lakes could bring small hail and even water spouts.
00:39The cooler air may lower energy demand and cooling costs.
00:43Forecasters say the exact storm and flooding risk will depend on how the pattern develops.
00:48Disclosure, this video contains stock footage and content created or enhanced using AI-assisted tools.
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