A disturbance will advance eastward towards the DC Region on Thursday afternoon while a back-door cold front advances westward toward the interstate 95 corridor. This squeeze play setup in the atmosphere should ignite numerous showers and thunderstorms with very heavy rainfall and gusty winds during the late afternoon and evening hours.
Timing Thursday’s Thunderstorms and Friday’s Showers
Locations today that remained mostly dry (west of the 95 corridor in Northern Virginia and central/northern Maryland) will likely see the heaviest storms tomorrow.
Temperatures Slide on Thursday Night/Friday
The image below (courtesy PivotalWx) shows the back-door cold front moving in from the east and dropping temperatures from the mid to upper 80s into the lower 60s for highs on Friday!
Potential Rainfall Amounts through Friday Evening
Flash Flooding will become a problem in the heaviest thunderstorms on Thursday afternoon and evening. Ample amounts of moisture in the atmosphere will allow for rainfall rates of 2″ per hour, enough to cause flash flooding of creeks, streams, low-lying urban areas and hilly/mountainous terrain.
The weekend ahead is looking very nice with partly cloudy skies and highs in the lower to middle 80s. A scattered thunderstorm is possible on Sunday afternoon but coverage should remain under 50%.