A dangerous wave of storms is set to slam the District of Columbia and surrounding parts of Maryland and Virginia on Thursday afternoon, with forecasters warning of torrential downpours, flash flooding and the potential for significant travel disruptions during the evening commute.

The National Weather Service has issued a Flood Watch for the entire D.C. metropolitan area, effective from 2 p.m. Thursday until 2 a.m. Friday. The warning covers D.C., much of central and northern Maryland — including Montgomery, Prince George’s, Anne Arundel and Baltimore counties — and stretches to northern Virginia, affecting Loudoun, Fairfax, Arlington, Alexandria and surrounding communities.

The region is currently blanketed by extreme humidity, with dew points reaching into the upper 70s and precipitab

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