The following events were reported: Flash Flood, Flood. These occurred near station USW00093738, approximately 22.1526 km away, between 2018-07-21 16:35:00 and 2018-07-22 20:40:00. The flood was caused by Heavy Rain. Thankfully, no injuries or fatalities were reported. No significant property or crop damage was reported. Episode Narrative: A coastal low pressure moved up the Atlantic seaboard. Copious moisture spread northward across the southern and western suburbs of Washington DC in the state of Virginia. Rainfall totals of 3 to 6 inches were widespread, causing fairly widespread flooding. A coastal low pressure moved up the Atlantic seaboard. Event Narrative: The stream gage on Cedar Run near Aden exceeded the 10 foot flood stage during the indicated period. The peak level of 11.20 feet occurred at 1:33am EST on July 22nd. Aden Road flooded in the area. The stream gage on Broad Run near Bristow exceeded the flood stage of 9.5 feet during the indicated period. The peak level of 14.20 feet occurred at 9:06pm EST on July 21st. Piper Lane was significantly flooded near Manassas Airport, along with streamside trails. The stream gage on Bull Run near Manassas Park exceeded the 12 foot flood stage during the indicated period. The peak level of 20.20 feet was observed at 8:45am EST on July 22nd. Streamside trails were flooded. Closer to peak levels, Lake Drive flooded in multiple spots, with overland flow affecting two basements in that same area. Northbound Route 28 flooded and impassable near Aden Road. Sowego Road flooded and closed at Town Run near Elk Run Road. Fleetwood Drive reported flooded and closed. Valley View Drive flooded and closed south of Bristow. US Highway 29 flooded and closed near Sandy Point Lane. Old Courthouse Road flooded and closed near Besley Road at Wolftrap Creek. Lewinsville Road (Route 694) was flooded and closed in the 8500 block near Lewinsville Mews. Wellington Road flooded and closed near Manassas. Carriage Ford Road flooded and closed near Hazelwood Drive. Fleetwood Road flooded and closed near Stone Ridge. Beach Mill Road flooded and closed near Route 674. Burke Lake Road flooded and closed near the outlet to Burke Lake due to torrential rain. Rapid flooding in the 10300 block of Lawyers Road forced the closure of the road. Burke Centre Parkway was flooded due to torrential rainfall and had to be closed near Burke Commons Road. Torrential rain prompted flooding of Broad Run, forcing a water rescue on Evergreen Mills Road near Belmont Ridge Road. Sudley Road (State Route 234) flooded due to Youngs Branch going out of its banks. Two vehicles were trapped in swift rushing water from Youngs Branch, prompting water rescues. Swift water rescue on Featherbed Lane near Manassas. Water rescue from floodwaters at the intersection of Old Church Road and Crockett Road. Piper Lane flooded and closed due to overflow of Broad Run near the railroad tracks. Wintercress Court flooded and closed near Tallowwood Drive. Edwards Ferry Road flooded and closed east of Leesburg. Snickersville Turnpike flooded and closed near Mountville. Backwater due to flooding of Bull Run forced the closure of portions of Lake Drive. Two houses had flooded basements due to overland flow. A motorist in a truck was stranded in high water on Lakewood Lane in the Clifton area. The stream gage on Difficult Run near Great Falls exceeded the flood stage of 11 feet during the indicated period. The peak level of 12.80 feet occurred at midnight EST on July 22nd. Courthouse Road flooded and closed at Town Run between Brent Town Road and Elk Run Road.