Flash Flood Watch
Statement as of 1:47 PM EDT on July 27, 2017


... Flash Flood Watch in effect from Friday afternoon through
Saturday afternoon...

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Watch for portions of Maryland, the District of
Columbia, Virginia, and West Virginia, including the following
areas, in Maryland, Anne Arundel, Calvert, Carroll, central
and eastern Allegany, central and southeast Howard, central
and southeast Montgomery, Charles, extreme western Allegany,
Frederick MD, northern Baltimore, northwest Harford, northwest
Howard, northwest Montgomery, Prince Georges, southeast
Harford, southern Baltimore, St. Marys, and Washington. The
District of Columbia. In Virginia, Arlington/Falls
Church/Alexandria, Clarke, Culpeper, eastern Loudoun, Fairfax,
Frederick VA, King George, northern Fauquier, northern
Virginia Blue Ridge, Page, Prince William/Manassas/Manassas
Park, Rappahannock, Shenandoah, southern Fauquier, Stafford,
Warren, and western Loudoun. In West Virginia, Berkeley,
eastern Grant, eastern Mineral, Hampshire, Hardy, Jefferson,
Morgan, western Grant, and western Mineral.

* From Friday afternoon through Saturday afternoon

* low pressure is going to develop over the mid Atlantic Friday
and remain nearly stationary this weekend. This will have the
potential to bring 3 inches or more of rain to the region
through Saturday afternoon. Thunderstorms could cause locally
higher rainfall amounts.

* Heavy rainfall may result in rapid rises in streams and creeks.
This could quickly result in flooding... especially in low lying
and poor drainage areas.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditionshat lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.




Forecast as of 9:39 AM EDT on July 27, 2017

Thursday
Cloudy skies. A stray severe thunderstorm is possible. High 89F. Winds SSW at 10 to 15 mph.
Thursday Night
Overcast. A stray severe thunderstorm is possible. Low near 75F. Winds SW at 5 to 10 mph.
Friday
Scattered thunderstorms in the morning becoming more widespread in the afternoon. Heavy downpours are possible. A few storms may be severe. High 81F. Winds SW at 5 to 10 mph. Chance of rain 80%. Rainfall possibly over one inch.
Friday Night
Thunderstorms. Low near 70F. Winds E at 5 to 10 mph. Chance of rain 90%. Rainfall near an inch. Localized flooding is possible.
Saturday
Cloudy with periods of rain. High 72F. Winds N at 15 to 25 mph. Chance of rain 90%. Rainfall near a half an inch. Localized flooding is possible.
Saturday Night
Cloudy with periods of rain. Low 64F. Winds N at 10 to 20 mph. Chance of rain 90%. Rainfall around a quarter of an inch.
Sunday
Cloudy skies early, followed by partial clearing. Slight chance of a rain shower. High 76F. Winds N at 10 to 15 mph.
Sunday Night
Considerable clouds early. Some decrease in clouds late. Slight chance of a rain shower. Low near 65F. Winds N at 10 to 15 mph.
Monday
Partly to mostly cloudy. Slight chance of a rain shower. High 84F. Winds N at 5 to 10 mph.
Monday Night
Clear skies. Low 67F. Winds W at 5 to 10 mph.
Tuesday
Plentiful sunshine. High 88F. Winds WNW at 5 to 10 mph.
Tuesday Night
A mostly clear sky. Low near 70F. Winds SSW at 5 to 10 mph.
Wednesday
Except for a few afternoon clouds, mainly sunny. High 89F. Winds SW at 5 to 10 mph.
Wednesday Night
Some clouds early will give way to generally clear conditions overnight. Low 71F. Winds SSW at 5 to 10 mph.
Thursday
Sunshine. High around 90F. Winds SSW at 5 to 10 mph.
Thursday Night
A few clouds. Low 73F. Winds SSW at 5 to 10 mph.
Friday
Sunny in the morning then increasing clouds with some scattered thunderstorms later in the day. High 89F. Winds SW at 5 to 10 mph. Chance of rain 40%.
Friday Night
Mostly clear skies. Low 74F. Winds SSW at 5 to 10 mph.
Saturday
Mostly sunny in the morning then increasing clouds with some scattered thunderstorms later in the day. High 87F. Winds WSW at 5 to 10 mph. Chance of rain 60%.
Saturday Night
Scattered thunderstorms during the evening, then partly cloudy overnight. Low 72F. Winds SSW at 5 to 10 mph. Chance of rain 50%.
Sunday
Mostly sunny skies. High 88F. Winds WSW at 5 to 10 mph.
Sunday Night
Mostly clear skies. Low 72F. Winds SSW at 5 to 10 mph.
Updated: 2:01 PM EDT on July 27, 2017
Observed at Washington, District of Columbia
Temperature 84°F
Humidity 69%
Dew Point 73°F
Wind SW at 12 mph
Pressure 29.93 in (Falling)
Conditions Overcast
Visibility 10.0 miles
Clouds Mostly Cloudy (BKN) : 3100 ft
Overcast (OVC) : 25000 ft
Yesterday's Maximum 85°F
Yesterday's Minimum 69°F
Normal high 88°F
Normal low 71°F
Record high 100°F (1940)
Record low 55°F (1920)
Yesterday's Heating Degree Days 0
Yesterday's Cooling Degree Days 12
Sunrise06:04 AM (EDT)
Sunset08:23 PM (EDT)
Moon Rise10:40 AM (EDT)
Moon Set11:14 PM (EDT)
Moon PhaseWaxing Crescent
Waxing Crescent

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