6:15 AM | **Still hot today with the chance of showers/storms...cooler on Friday after passage of back door cool front**
Paul Dorian
6-Day forecast for the Washington, D.C. metro region
Today
Partly sunny, hot, humid, chance of PM showers and thunderstorms, any thunderstorm can be strong-to-severe, highs in the middle 90’s; NW winds around 5 mph
Tonight
Mainly cloudy, mild, chance of showers and thunderstorms, any thunderstorm can be strong-to-severe, lows in the lower 70’s
Friday
Mainly cloudy, cooler, chance of showers, maybe a PM thunderstorm, near 80 degrees for afternoon highs
Friday Night
Mainly cloudy, mild, chance of showers and thunderstorms, near 70 degrees for late night lows
Saturday
Partly sunny, much warmer, humid, chance of showers and thunderstorms, lower 90’s
Sunday
Partly sunny, quite warm, humid, chance of showers and thunderstorms, near 90 degrees
Monday
Partly sunny, quite warm, humid, chance of showers and thunderstorms, near 90 degrees
Tuesday
Partly sunny, quite warm, humid, chance of showers and thunderstorms, some of the storms can be strong-to-severe, lower 90’s
Discussion
The very strong upper-level ridge of high pressure that has been parked overhead during the past few days is now weakening and shifting to the south. At the same time, surface high pressure has built into southeastern Canada and this combination has resulted in the formation of a back door cool front across northern New England which will push southwestward during the next 24 hours to a position in the southern Mid-Atlantic by late Friday. As a result, temperatures will be remain hot here, but then it’ll turn cooler on Friday as a low-level ocean flow of air develops behind the front (i.e., east-to-northeast winds).
There can be showers and thunderstorms from today into tomorrow during this temperature transition period and any storm that forms can be strong-to-severe. The back door cool front will then turn around on Saturday and push back to the north as a warm front resulting in quite warm and humid conditions on both Saturday and Sunday. There will be the chance of showers and thunderstorms on both weekend days, but neither should be a total washout.
Meteorologist Paul Dorian
Arcfield Weather