Overview
- Heat advisories and some extreme heat warnings remain in effect on Saturday with heat‑index values commonly in the 100s across parts of the central and eastern United States.
- Forecasters expect scattered to isolated late‑afternoon and evening storms that can produce heavy downpours, frequent lightning, and strong gusts that may force people to seek shelter and could disrupt fireworks shows.
- Some storms could become strong to severe in localized areas with damaging wind gusts and flash flooding where storms train or stall over the same neighborhood.
- Officials and weather teams urge simple safety steps for outdoor plans: stay in air‑conditioned spaces when possible, hydrate, monitor local NWS alerts, and move indoors immediately for lightning or severe‑storm warnings.
- Relief is expected beginning Sunday as a frontal passage brings noticeably cooler, drier air for many areas and shifts storm coverage to more widespread showers into early next week.