6:30 AM | ***An increasingly tropical air mass with late day/nighttime showers and storms...some of the rain can be heavy...cooler second half of the week..."Debby" impact Thursday into Saturday***

6-Day forecast for the Washington, D.C. metro region

Today

Partly sunny, hot and very humid, chance of PM showers and thunderstorms, some of the late day rain can be heavy, highs near 95 degrees; W-SW winds around 5-10 mph

Tonight

Mainly cloudy, mild, humid, good chance of showers and thunderstorms, some of the rain can be heavy, lows in the middle 70’s

Wednesday

Mainly cloudy, cooler, good chance of showers and thunderstorms, some of the rain can be heavy, low-to-mid 80’s for afternoon highs

Wednesday Night             

Mainly cloudy, mild, chance of showers and thunderstorms, upper 60’s for late night lows

Thursday

Mainly cloudy, cool, chance of showers and thunderstorms, some of the rain can be heavy, upper 70’s

Friday

Mainly cloudy, warm, breezy, chance of showers and thunderstorms, some of the rain can be heavy, lower 80’s

Saturday

Partly sunny, warm, breezy, chance of showers and thunderstorms, low-to-mid 80’s

Sunday

Mainly sunny, comfortably warm, lower 80’s

Discussion

Despite the fact that the center of Tropical Storm Debby will likely not move to the Mid-Atlantic region until the end of the week, its influence around here will actually begin late today and tonight. The combination of an increasingly tropical air mass and an incoming cold frontal system will result in scattered late day and nighttime showers and thunderstorms. Some of the rain can be heavy at times and flash flooding may become a concern during the overnight hours; especially, across northeastern Maryland. It turns cooler for the second half of the week following the passage of the cold frontal system which will actually stall out in our general vicinity.

Tropical Storm Debby is now near the Georgia/South Carolina coastal border region and it will meander to a position just off the South Carolina coast by late today and tonight. Some re-intensification is possible on Wednesday while TS Debby is out over the open waters of the southwestern Atlantic and then a second landfall is likely on Thursday somewhere along the South Carolina coast. After that, the tropical storm is probably going to be kicked out to the north and move into the Mid-Atlantic region which likely results in additional heavy rainfall around here from later Thursday into early Saturday.

Meteorologist Paul Dorian
Arcfield Weather