Flash Flood — Manassas Park (c), Virginia

1999-09-16 · near Manassas Park, Manassas Park (c), Virginia

Event narrative

Some secondary roads flooded

Wider weather episode

Hurricane Floyd made landfall just east of Cape Fear, North Carolina in the early morning hours of the 16th and moved north-northeast across extreme southeast Virginia to near Ocean City, Maryland by evening on the 16th. Rainbands on the outer edge of the hurricane began to affect northern Virginia shortly after 8:00 AM EDT on the 15th and continued to cross the area through afternoon on the 16th. The eye of Hurricane Floyd passed east of the Chesapeake Bay between 9:00 AM and midnight on the 16th. Gusty winds of 30 to 50 MPH blew north and east of a line from Spotsylvania County to Frederick County between 11:00 AM and midnight on the 16th. Hundreds of trees were downed from the combination of very heavy rain and strong winds. A total of 2 to 5 inches of rain fell in this area and 16,000 power outages were reported. Rainfall reports of over 3 inches included 5.97 inches in Spotsylvania, 4.57 inches at Washington National Airport, 4.55 inches in Annandale, 4.03 inches in Fairfax Station, 3.55 inches in Reston, 3.38 inches in Herndon, 3.36 inches in Great Falls and Chester Gap, and 3.32 inches at Hogback Mountain. Peak wind gusts included 55 MPH at National Airport at 3:00 PM EDT, 45 MPH in Herndon at 4:01 PM EDT, 43 MPH in Manassas at 4:09 PM EDT, 41 MPH in Alexandria at 3:55 PM EDT, 40 MPH in Chantilly at 3:47 PM EDT, and 39 MPH at Dulles Airport at 3:43 PM EDT. In Spotsylvania County, several trees were downed and high water closed several roads in the eastern portion of the county. King George County and Stafford County reported numerous downed trees and several roads closed by high water. In Prince William County, 17 trees came down on roads and power lines, and two homes were slightly damaged by fallen trees. In the Montclair area, 1000 residents lost power. Some secondary roads were also flooded. A few trees were downed in the Manassas area. In Fairfax County, a 61 year old woman was killed when a tree fell onto her car and crushed it on Fair Lakes Drive. ONe business was destroyed by fallen trees and another in Falls Church was damaged. A 70 ft oak tree fell onto a home and tore a hole in the 2nd floor, shattering windows and tearing off rain gutters. The tree also damaged a detached garage and a swingset. The Mason Neck area saw several large trees downed, including a 100 ft poplar that put a hole through a bedroom of a two story home. Mt. Vernon and Vienna also reported several downed trees, including one which damaged a car. The county had to hire 16 tree trimming contractors to clear downed trees that blocked roadways. Flooding caused problems at 7 major intersections and on 20 secondary roads. Winds and rain combined to topple 130 trees in Arlington County and Alexandria. One tree damaged a home and 4500 power outages were reported. In Loudoun County, a handful of trees were downed and a road was blocked near Mt. Weather. Siding was also torn off the side of a few homes. Clarke County reported downed trees and power outages along the ridge at the Loudoun County border. Trees were also downed on the top of Blue Mountain in the southern portion of the county, knocking out power and phone service. In Warren County, a few trees and power lines were downed at higher elevations. In Winchester, a home was damaged by a fallen tree and a few customers lost power.

Source: NOAA Storm Events Database, event_id 5716681. Narrative written by the NWS forecast office that issued the report.