Falls Church, VA, most vulnerable to flooding.

Falls Church, Virginia, is the most vulnerable area in the Washington area to flooding.

According to local media outlet Axios DC, the National Weather Service (NWS) issued the highest number of flash flood warnings in the Washington area in 20 years this year, and according to flood coefficients from climate risk analysis firm First Street, 4.5% of Washington-area homes are at risk of severe flooding.

Falls Church had the highest flood coefficient in the Washington area, at 14.8%, followed by Washington, D.C. (7.5%), Alexandria (7.3%), Arlington (7.2%), Montgomery (5.1%), and Fairfax and Prince George’s counties (4.5%).

According to First Street, a higher flood coefficient indicates a higher likelihood of future flooding.