Residents across Northern Virginia should expect a mostly cloudy day with periods of showers on Wednesday, according to the National Weather Service (NWS) Baltimore-Washington, D.C. office. Low clouds, patchy fog, and isolated showers will dominate the morning hours.

High temperatures will remain below average for early July, generally reaching the upper 70s to low 80s in most spots, with a high near 84 possible in warmer locations. Winds will be light from the east at 3 to 5 mph. The chance of precipitation is around 30%, with most of the day’s convection expected to remain west of U.S. 15.

A combination of a stalled frontal boundary and a persistent tropical air mass will increase the risk of flash flooding in central Virginia this afternoon and evening.

Flood Watches have been issued for much of central Virginia, extending northward along the I-81 corridor into eastern West Virginia. Residents in low-lying areas, near streams and rivers, and in urban areas with poor drainage should remain alert for rapidly rising water levels.

FLOOD WATCH REMAINS IN EFFECT from 4 PM EDT this afternoon through this evening for Washington DC, much of Maryland, Northern Virginia, and eastern West Virginia.

The National Weather Service Baltimore MD/Washington DC has warned of an increased risk of flash flooding this afternoon and evening due to a slow-moving frontal zone and tropical air mass in place.