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National Weather Service: Areal Flood Watch |
Short-term forecast
Issued by the National Weather Service at 5:22 PM EST on March 12, 2010
Flood Watch in effect through Saturday evening... Periods of light rain will continue through the evening. Rainfall rates will be on the order of one tenth to one quarter inch per hour.
5-day forecast
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| Rain | Rain | Chance of Rain | Partly Cloudy | Partly Cloudy |
| 49° | 40° | 47° | 36° | 49° | 36° | 54° | 36° | 54° | 36° |
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Forecast
As of 6:00 PM EST on March 12, 2010
Tonight...Rain. Rain may be heavy at times after midnight. Breezy with lows in the upper 40s. East winds 15 to 25 mph with gusts up to 35 mph. Chance of rain near 100 percent.
Saturday...Rain. Rain may be heavy at times. Breezy with highs in the lower 50s. Northeast winds 15 to 25 mph with gusts up to 35 mph. Chance of rain near 100 percent.
Saturday Night...Rain...mainly in the evening. Lows in the lower 40s. Northeast winds 15 to 20 mph...becoming north around 10 mph after midnight. Chance of rain near 100 percent.
Radar
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Regional conditions
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Almanac
Key: T = Trace of precipitation; MM = data not available
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Areal Flood Watch
Issued by the National Weather Service at 6:12 PM EST on March 12, 2010
... Flood Watch now in effect through Sunday evening...
The Flood Watch is now in effect for
* the Washington and Baltimore metropolitan areas... north-central
and western Maryland... lower southern Maryland... eastern West
Virginia... and northern and central Virginia
* through Sunday evening
* low pressure will bring periods of rain through Saturday night.
The heaviest rain is expected to occur Friday night and
Saturday. Widespread rainfall totals of 2 to 4 inches can be
expected... with locally higher amounts.
* These rainfall amounts will bring the likelihood of flooding for
small streams... creeks and urban areas tonight through Saturday.
Additionally... minor to moderate flooding of feeder creeks and
streams of the Potomac and Shenandoah rivers is likely to start
late tonight and last through Sunday night. Along the mainstem
Potomac River... moderate flooding is likely to start Saturday at
Paw Paw... Harpers Ferry... Point of Rocks and Little Falls... and
last through Sunday night. Along the mainstem Shenandoah
River... moderate flooding is likely at and downstream of
Millville.
Precautionary/preparedness actions...
A Flood Watch means there is a potential for flooding based on
current forecasts.
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.
End
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