Hazardous Weather Outlook Calls for Heavy Rain and Winds Through Wednesday Night
Posted at 11 a.m.
Fairfax County is now under a Coastal Flood Advisory and a Flash Flood Watch beginning this evening at 10 p.m. A flash flood watch means that there is the potential for flash flooding. Flash flooding is a very dangerous situation. Rapidly moving water is powerful and can be a threat to vehicles as well as people and property.
The National Weather Service (NWS) Hazardous Weather Outlook forecasts thunderstorms Wednesday afternoon and evening that will be capable of producing torrential rainfall and damaging wind gusts.
NWS reports that rain will continue through Wednesday night with the heaviest rain expected tonight through tomorrow night. Storm total rainfall amounts will average between 3 and 5 inches with locally higher amounts likely. Heavy amounts of rain in short periods of time may cause flash flooding of creeks streams and urban areas.
Flooding causes more damage in the U.S. than any other weather related event and is the second leading cause of weather related fatalities in the U.S. (behind heat). On average, floods cause $8 billion in damages and over 80 fatalities annually.
Just six inches of fast-moving water can knock over an adult. Only 18 inches of flowing water can carry away most vehicles, including large SUVs. It is impossible to tell the exact depth of water covering a roadway or the condition of the road below the water. This is especially true at night when your vision is more limited. It is never safe to drive or walk through flood waters. Any time you come to a flooded road, walkway or path, follow this simple rule: Turn Around, Don’t Drown.
Bruce McFarlane is with our Emergency Management Office and offers this advice if you’re in your car.
And please remember to keep your children inside and away from streams and creeks.
Get more information about flood safety and what you should do before, during and after a flood at www.floodsafety.noaa.gov. Here’s a list of areas in the county that have previously flooded. For more information on flood safety tips and information, visit ready.gov/floods or the Spanish-language website listo.gov.
In addition, continue to monitor weather forecasts and be prepared to take action should warnings be issued. A warning would mean that we have moved from the possibility of flooding to a flooding situation in a specific area.