Flash Flood Warning issued for part of Fairfax County amid downpour

A rain storm passes over central Fairfax (via NWS)

Rain is pouring down on Fairfax County, raising the risk of flooding.

The National Weather Service has issued a Flash Flood Warning for the central portion of the county, including Oakton, Annandale, Merrifield and Fairfax City.

In effect until 6:30 p.m., the warning anticipates up to 3 inches of rain in the affected areas. As of 3:25 p.m., between half-an-inch and 1.5 inches had already fallen.

“Turn around, don’t drown when encountering flooded roads,” the NWS said. “Most flood deaths occur in vehicles. Basement flooding can occur quickly and create a life-threatening situation. If you are in a basement, or a residence below street level, move to a higher floor immediately.”

The full flood warning is below:

* Flash Flood Warning for…
Western Arlington County in northern Virginia…
Central Fairfax County in northern Virginia…
The Northwestern City of Alexandria in northern Virginia…
The City of Fairfax in northern Virginia…
The City of Falls Church in northern Virginia…

* Until 630 PM EDT.

* At 325 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

HAZARD…Flash flooding caused by thunderstorms.
IMPACT…Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

Updated at 4:30 p.m. — According to Fairfax Alerts, high water has closed Prosperity Avenue at Morningside Drive in the Mantua area.

As of 4:20 p.m., 926 Dominion Energy customers had lost electricity, according to the utility’s outage map.

The largest outages are in Springfield north of the Mixing Bowl, where 547 people are without power and the estimated time of restoration is 5-10 p.m. Another 147 customers have been affected by outages in Lincolnia, where power is expected to return between 7 p.m. and midnight.

Updated at 4:55 p.m. — Woodburn Road at Spicewood Drive has also closed as a result of high water, per Fairfax Alerts. The closure is located just south of Accotink Creek.

Updated at 6:25 p.m. — A Flood Warning has now been issued, extending to 9 p.m. The NWS says 1-4 inches of rain have fallen so far in the central Fairfax area, along with Alexandria, Arlington and Falls Church.

“Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring,” the NWS said. “Streams continue to rise due to excess runoff from earlier rainfall.”