Overview
- The Storm Prediction Center placed parts of the Lower Great Lakes, Mid‑Atlantic and Northeast in an enhanced severe‑weather risk and local National Weather Service offices issued Severe Thunderstorm, Tornado and Flood Watches for targeted counties on Saturday.
- Forecasters identified damaging straight‑line winds and heavy downpours with flash‑flood potential as the primary hazards, while isolated tornadoes and some large hail remain possible in stronger cells.
- Storms are expected to develop Saturday afternoon into the late evening and move eastward along frontal boundaries and pre‑frontal convergence zones, with the highest severe threat through late evening in I‑95 corridor and Susquehanna Valley corridors.
- Rain and thunderstorms should push out Canadian wildfire smoke and improve air quality regionally by Sunday, though several southeastern Pennsylvania counties were kept under Code Orange alerts until rain arrives.
- Officials warned of near‑term impacts on outdoor events and travel from wind damage and urban flooding, and they said the advancing cold front will bring drier, less humid conditions on Sunday while forecasters continue to monitor Gulf low pressure for added tropical moisture next week.