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Flood Watch Issued from 2 p.m. Today Through Friday

Posted at 9:45 a.m.

Flood Watch

The National Weather Service has issued a Flood Watch in effect from 2 p.m. this afternoon through Friday evening for the potential for flooding from heavy rain. Localized areas of flooding of small streams and urban areas are possible today and tonight.

A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

From 2 p.m. this afternoon through Friday evening, periods of rain will continue across the region. This rain will be heavy at times, with overall additional rainfall totals of 3 to 5 inches. While flash flooding cannot be ruled out, the primary concern is flooding of small streams and low-lying areas. Streams are already elevated and soils saturated from earlier rainfall, increasing the flood threat.

Turn Around Don’t Drown

Flooding is one of the leading causes of weather related fatalities in the U.S. On average, flooding claims nearly 90 lives each year. More than half of these deaths occur in motor vehicles when people attempt to drive through flooded roadways. This happens because people underestimate the force and power of water, especially when it is moving.

  • Just 6 inches of fast-moving water can knock over and carry off an adult.
  • 12 inches of water can float a small car. If that water is moving, it can carry that car away.
  • 18 to 24 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.

Hazardous Weather Outlook and Severe Thunderstorm Watch for This Afternoon and Evening

Posted at 3 p.m.

Thunderstorm Watch

The National Weather Service has issued a hazardous weather outlook, which includes a severe thunderstorm watch, in effect through 9 p.m. tonight, Monday, May 14. Scattered severe thunderstorms with damaging wind gusts and large hail are possible this afternoon and evening. The greatest risk is south of U.S. Highway 50.

Remainder of the Week

There is a chance of isolated severe thunderstorms with damaging wind gusts and large hail possible again Tuesday afternoon and evening. Heavy rains Thursday night and Friday also may result in small stream and urban flooding.

Hazardous Weather Outlook This Afternoon and Evening

Posted at 10:30 a.m.

The National Weather Service has issued a hazardous weather outlook for isolated severe thunderstorms with damaging winds and large hail possible this afternoon and early evening.

Detailed Forecast

hazardous weather

Today

Showers and thunderstorms likely, mainly between 2 p.m. and 5 p.m., then showers likely and possibly a thunderstorm after 5 p.m. Some of the storms could produce gusty winds and frequent lightning. Mostly cloudy, with a high near 82. Southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70 percent. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers likely and possibly a thunderstorm before 8 p.m. Mostly cloudy, then gradually becoming mostly clear, with a low around 60. West wind 6 to 9 mph. Chance of precipitation is 60 percent. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Get more weather information from the National Weather Service.


Fairfax Alerts

Fairfax County Government Open With Unscheduled Leave for Employees on Thursday, March 22; Schools Closed

Posted Wednesday, March 21, at 7:20 p.m.

County and School Status

  • Fairfax County Government offices are open on Thursday, March 22, however employees have been granted unscheduled leave. Emergency service personnel should report as scheduled.
  • Fairfax County Public Schools are closed on Thursday.
  • School Age Child Care(SACC) centers are also closed.
  • The Fairfax County Circuit Court, General District Court and Juvenile and Domestic Relations District Court will be open.

Parks, Community and Recreation and Community Centers

Transportation: Connector, Fastran

Libraries

  • Library hours may be affected; call your local branch before visiting. For branch phone numbers, call 703-324-3100 or go to fairfaxcounty.gov/library.

View the public meetings calendar for any potential cancellations of public meetings of Fairfax County government Boards, Authorities or Commissions.

Emergency information is available on Fairfax County’s website (www.fairfaxcounty.gov), Facebook (www.facebook.com/fairfaxcounty), Twitter (www.twitter.com/fairfaxcounty), Fairfax Alerts at www.fairfaxcounty.gov/alerts or by calling the Fairfax County Emergency Information Hotline at 703-817-7771, TTY 711. Fairfax County Government Radio (www.fairfaxcounty.gov/radio) will announce county government closing status and also broadcasts weather forecasts several times per hour.

Winter weather preparedness information can be found in our Winter Weather Guide.

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Winter Storm Warning Issued for Wednesday, March 21

Posted at 3:45 p.m.

The National Weather Service has issued a Winter Storm Warning, in effect from 2 a.m. to 8 p.m. tomorrow, Wednesday, March 21.

Heavy snow is expected with total snow accumulations of 4 to 8 inches possible. That estimate may rise as we get closer to tomorrow.

A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your  vehicle in case of an emergency.

To help prepare for this late winter snow, visit our Winter Weather Guide. Also, stay tuned in to the latest weather forecast, and sign up for severe weather alerts from Fairfax Alerts.