Overview
- Dangerous heat is already in place across broad U.S. regions with daytime highs in the 90s and heat‑index values often above 100 degrees, and forecasts show near‑record readings and heat‑index values approaching 110 degrees into next week.
- Scattered afternoon and evening thunderstorms are expected this weekend with the primary window in the late afternoon and evening and storms capable of producing damaging wind gusts, hail, frequent lightning, and localized flash flooding.
- The National Hurricane Center is tracking a low‑pressure area in the northeastern Gulf with roughly a 20 percent seven‑day chance of tropical development and forecasters say that even without development the feature could funnel extra tropical moisture into the Gulf Coast and Florida.
- Canadian wildfire smoke continues to produce hazy skies and degraded air quality across parts of the Great Lakes, Northeast, and Mid‑Atlantic with some unhealthy readings and forecasters say incoming storms may temporarily clear or redistribute the smoke.
- Vulnerable groups and outdoor workers should limit exposure and stay cool, communities near flood‑prone or burn‑scar terrain should watch for rapid runoff and flash flooding, and local NWS offices will issue evolving advisories and warnings as the situation changes.