Warning Description: Areal Flood Warning

Warning Date: 8:10 PM EST on March 13, 2010

WarningSum:


Warning Message:The National Weather Service in Sterling Virginia has extended the
* Flood Warning for urban areas and small streams in...
  Frederick County in north central Maryland
  Washington County in north central Maryland
  Loudoun County in northern Virginia
* until 315 am EDT Sunday
* at 804 PM EST...several area roads remain closed due to high water 
from swelled creeks and streams across portions of Loudoun...
Frederick and Washington counties. Much of the heavier rainfall has 
ended east of the Blue Ridge and catoctins...though more light to 
moderate rain will continue over the northern Shenandoah Valley late 
this evening.
A Flood Warning means that flooding is imminent or has been reported.
Stream rises will be slow and flash flooding is not expected.
However...all interested parties should take necessary precautions
immediately.
Precautionary/preparedness actions...
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams...highways and underpasses. Additionally...country
roads and farmlands along the banks of creeks...streams and other low
lying areas are subject to flooding.
Be especially cautious at night when it is harder to recognize the
dangers of flooding. If flooding is observed act quickly. Move up to
higher ground to escape flood waters. Do not stay in areas subject to
flooding when water begins rising.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to travel across
flooded roads. Find alternate routes. It takes only a few inches of
swiftly flowing water to carry vehicles away.
Lat...Lon 3970 7731 3962 7734 3947 7716 3935 7724
      3917 7754 3907 7753 3904 7739 3891 7751
      3902 7789 3933 7767 3943 7772 3946 7777
      3953 7775 3952 7781 3956 7784 3961 7781
      3972 7822 3973 7822
438 PM EST Sat Mar 13 2010
The National Weather Service in Sterling VA has issued a 
* Flood Warning for 
  the Antietam creek near Sharpsburg.
* From Sunday morning to Sunday afternoon...or until the warning is 
  cancelled.
* At  1:30 PM Saturday the stage was 6.0 feet. 
* Flood stage is 8.0 feet. 
* Minor flooding is forecast. 
* Forecast...the river is expected to rise to near flood stage 
  tomorrow morning.
At 8.0 feet, water overflows its banks inundating the one Lane low 
water bridge on Burnside bridge Road as well as other low lying 
sections of the Road along the creek. Water also begins flooding 
parts of Antietam Battlefield Park, near the old Burnside bridge.  
438 PM EST Sat Mar 13 2010
The National Weather Service in Sterling VA has issued a 
* Flood Warning for 
  the Conococheague creek at Fairview.
* From this evening until further notice.
* At  3:45 PM Saturday the stage was 6.3 feet. 
* Flood stage is 8.0 feet. 
* Minor flooding is forecast. 
* Forecast...rise above flood stage by tonight and continue to rise 
  to near 10.2 feet by tomorrow early afternoon.
At 11.0 feet, much of wishard Road is flooded.  
438 PM EST Sat Mar 13 2010
The Flood Warning continues for 
  the Potomac River at Williamsport.
* From Sunday afternoon until further notice.
* At  3:49 PM Saturday the stage was 17.6 feet. 
* Flood stage is 23.0 feet. 
* Minor flooding is forecast. 
* Forecast...rise above flood stage by tomorrow early afternoon and 
  continue to rise to near 24.7 feet by tomorrow evening.
At 23.0 feet, water begins to inundate the Potomac fish & game club..  
438 PM EST Sat Mar 13 2010
...Forecast flooding increased from minor to moderate severity...
the Flood Warning continues for 
  the Potomac River at Harpers Ferry.
* Flood stage is 18.0 feet. 
* Forecast...the river is forecast to have a maximum value of 21.5 
  feet early Monday morning.
At 21.5 feet, water begins to 
reach Shenandoah street and adjacent shuttle bus Pavilion in historic
Harpers Ferry..