Updated: Flash Flood Warning Issued

Update - Thursday, 2:30 p.m.:  A flash flood warning is in effect until 5:30 p.m. Thursday as a new band of rain enters southeastern Fairfax County.

Continued rain may be heavy at times and has already caused some flooding along the Occoquan River in Lake Ridge, this afternoon.

Rainfall up to one inch per hour is likely in this weather band, and rain may continue for more than an hour. This will promote flash flooding.

Fairfax County warns that most flood deaths occur in automobiles. Never drive your vehicle into areas where the water covers the roadway. Flood waters are usually deeper than they appear. Just one foot of flowing water is powerful enough to sweep vehicles off the road.

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A flash flood warning is in effect for the Washington D.C. Metropolitan area until Saturday morning. Expect three-to-five inches of rainfall through the remainder of the day, with heavy rain to continue to Thursday. 

"The remnants of tropical depression Lee will continue to interact with a warm front…producing heavy showers and scattered thunderstorms across the area," according to the National Weather Service. "Most flood dither occur in automobiles. Never drive your vehicle into areas where the water covers the roadway. Flood waters are usually deeper than they appear."

Flights at Reagan Washington National Airport and Dulles International Airport are experiencing arrival delays of 76 to 90 minutes due to weather. This Afternoon: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 80. Southeast wind around 9 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible. 

On Thursday, thunderstorms are likely throughout the day. There is a 40 percent chance of showers on Friday, Saturday and Sunday.