Today will be exceptionally hot as a heat wave advances north into the region. Afternoon temperatures will soar into the low to mid 90s under clear and sunny skies, dew points in the low to mid 30s, and precipitable water (PWAT) values around 0.70”. Dry air aloft and poor upper-level support will inhibit storm development.

STORM RAINFALL POTENTIAL AND DURATION: Rainfall is not expected in the District today

A LOOK AHEAD: Thursday will be similar as sweltering conditions persist. Highs will once again reach the mid 90s under sunny skies, followed by slight chances for isolated afternoon to evening showers and thunderstorms. The heat wave begins to recede Friday with the arrival of a cold front. Highs will reach the mid to upper 80s with chances for scattered to widespread showers and thunderstorms developing by the afternoon. A few storms may become severe, producing gusty outflows exceeding 58 mph and/or hail greater than 1 inch in diameter.