Storm Threat Sunday: Latest from National Weather Service

The National Weather Service says Sunday that the metro DC area could see thunderstorms Sunday afternoonpacking damaging winds as well as isolated flash flooding, ahead of an expected cold front.

The timing for any thunderstorms? The NWS is predicting that Northern Virginia could see activity sometime between 1-5 p.m. The weather service says the area has a 90 percent chance of seeing rain Sunday afternoon.

The Washington Post's Capital Weather Gang is forecasting a slightly later timeframe, with potential thunderstorms hitting from 2-7 p.m. Sunday, targeting 4 p.m. as a potential prime time for a thunderstorm, based on the latest weather models.

Any flooding in the DC metro area could occur in poor drainage areas as well as in creeks and streams, the NWS warns. The weather service notes wind damage could occur mainly along the I-95 area.

The cold front is set to usher in cooler, less humid weather for the DC metro area, with a work week featuring highs in the low to mid-80s, the weather service predicts. By Friday, Northern Virginia will see highs reach about 90 degrees, according to the NWS.