Flash Flood Watch Issued For Parts Of Northern VA, DC

WASHINGTON, DC — A flash flood watch is in effect from 2 to 11 p.m. Saturday for parts of northern Virginia and Washington, D.C. Humidity will swamp the region, with heat index values as high as 102 degrees.

During a flash flood watch, conditions may develop leading to flash flooding. The National Weather Service said 3 inches or more of rain could fall in some parts of the region.

Areas in the flash flood watch include: the District of Columbia, Fairfax, Arlington, Falls Church, Alexandria, Falls Church, Chantilly, Centreville, Herndon, McLean, Reston, Annandale, and Franconia.

Multiple rounds of thunderstorms are expected Saturday afternoon through the evening. Localized rainfall amounts of up to 1-2 inches per hour will be possible at times. Total rainfall amounts of 1 to 3 inches, with locally higher amounts possible. Heavy rain in short periods of time will cause the potential for streams and creeks to quickly rise out of their banks, as well as the potential for flash flooding in urban areas.

"Scattered to numerous showers and thunderstorms are expected this afternoon and evening, with some becoming severe," the National Weather Service said. "Most likely impacts will be damaging winds and heavy rainfall, warranting a flash flood watch for parts of the area."

Risks From Heat

Hot temperatures and high humidity may cause heat illnesses to occur.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Cchildren and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening.

Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible.

To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air-conditioned environments.

Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency; call 911.