Overview
- Record highs on July 4 pushed many East Coast cities above 100°F and were followed by late‑day thunderstorms that disrupted holiday events and delayed fireworks.
- Officials report at least 25 suspected heat‑related deaths so far, with New Jersey citing 22 fatalities across 10 counties; those totals are preliminary and under review by health authorities.
- As of early July 6, Heat Advisories and Extreme Heat Alerts remain across much of the East Coast and parts of the South, with heat‑index values near or above 105°F and forecasters saying additional advisories are possible into midweek for Florida.
- Hot, moisture‑rich air is spawning sea‑breeze and frontal storms that move slowly and can dump intense rainfall, produce damaging wind and frequent lightning, and raise localized flash‑flood risk under a Storm Prediction Center slight‑risk area for the mid‑Atlantic.
- Regional impacts will diverge this week as New England cools with widespread rain while the Southeast and Florida stay dangerously hot, prompting cities to open cooling centers and utilities to take grid precautions.