Overview
- Widespread Heat Advisories remain in effect with heat‑index values reaching the triple digits across large swaths of the country, keeping dangerous heat and high humidity in place for the next several days.
- Scattered afternoon and evening showers and thunderstorms are expected today as sea‑breeze collisions and outflow boundaries trigger convection that will be spotty but capable of heavy downpours and frequent lightning.
- A Flood Watch is in effect for parts of the Susquehanna Valley from this afternoon into Monday evening after models and forecasts showed multiple rounds of slow‑moving storms with localized rainfall rates over 2 inches per hour.
- The Storm Prediction Center placed the Susquehanna Valley in a Slight Risk for severe storms that could produce damaging winds and large hail, while other regions face isolated severe‑wind or hail threats with any stronger cells.
- South Florida is seeing short‑term air‑quality hits from Independence Day fireworks and is forecast to receive a large plume of Saharan dust midweek that is likely to produce hazy skies, raise temperatures and lower local rain chances.