Overview
- A cold front has eased heat and humidity for a drier Saturday but local heat advisories and impact notices remain in effect in some places.
- Forecasters warn scattered to potentially severe thunderstorms are more likely Sunday as boundary interactions and returning moisture raise storm coverage and intensity.
- The Storm Prediction Center has placed parts of the Northeast, Mid‑Atlantic and Great Lakes under an elevated convective risk that includes damaging winds, hail and isolated tornadoes.
- Models and local offices show tropical and Gulf moisture combining with a slow‑moving front Monday through Wednesday, producing many areas with 2 to 4 inches of rain and a heightened urban and flash‑flood threat.
- Communities should follow local watches and warnings, prepare for power‑affecting winds and flooding, and note that timing and exact rainfall amounts remain model‑sensitive and regionally variable.