Multi-day severe storm threat looms over I-95 corridor from Tuesday to Friday

A weak disturbance moving over New York, New Jersey and Connecticut on Tuesday will grow into organized storms capable of strong winds, large hail and a few tornadoes. A second, stronger system will develop late Tuesday night over the Great Lakes and track southeast toward the Mid-Atlantic, keeping damaging wind gusts and hail as the primary hazards through Wednesday morning. Wednesday is expected to produce the highest number of wind damage reports and potential power losses, with a Level 2 flash-flood threat issued for New York City.

On Thursday, a strengthening heat dome and deeper jet-stream dips will shift severe thunderstorm potential southward into Washington, D.C., and the Delmarva region, while record high temperatures are also forecast. Friday’s outlook calls for another round of severe storms focused on the southern Mid-Atlantic, and lingering risk may extend into the Carolinas by Saturday before the pattern eases. This marks the first time since 2023 that areas like Philadelphia have faced a Level 2 storm threat for three straight September days.