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Washington, District of Columbia

  National Weather Service:
Flash Flood Watch , Tropical Storm Warning
    

5-day forecast
Fri Sat Sun Mon Tue
Chance of a Thunderstorm Thunderstorm Partly Cloudy Partly Cloudy Chance of a Thunderstorm
Chance of T-storms T-storms Partly Cloudy Partly Cloudy Chance of T-storms
88° | 72° 77° | 70° 88° | 63° 83° | 65° 83° | 63°

Current conditions
As of 5:24 PM EDT
at Washington, District of Columbia

Overcast
Temperature: 86°
Heat index:87°
Wind: SE 9 mph
Dewpoint: 63°
Humidity: 45%
Visibility: 10.0 miles
Forecast

As of 11:40 am EDT on September 5, 2008

This Afternoon...Mostly sunny. Highs in the upper 80s. Southeast winds around 10 mph.

Tonight...A slight chance of thunderstorms. Showers likely in the evening...then showers after midnight. Lows in the lower 70s. Southeast winds around 10 mph...becoming northeast after midnight. Chance of rain near 100 percent.

Saturday...Rain with isolated thunderstorms. Rain may be heavy at times. Strong winds with highs in the mid 70s. East winds 35 to 45 mph. Chance of rain near 100 percent.

Radar
Local radar » Loop
Regional radar » Loop

    Regional conditions
LocationConditionsTemp..
Arlington Overcast 86°
Riverdale Scattered Clouds 86°
Andrews Air Force Base Partly Cloudy 84°
Fort Belvoir Partly Cloudy 85°
Fort Meade Clear 82°
Dulles Mostly Cloudy 87°
Baltimore Mostly Cloudy 85°
Annapolis Clear 83°
Bristow Partly Cloudy 84°
Leesburg Scattered Clouds 88°

Almanac

Key: T = Trace of precipitation; MM = data not available
September 5, 2008
Normal high:83° Record high:97° (1881)
Normal low:65° Record low:50° (1902)
Sunrise:6:40 AM Moon Rise: 12:46 PM
Sunset:7:31 PM Moon Set: 10:15 PM
Complete weather almanac
Detailed History and Climate

Flash Flood Watch
Issued by the National Weather Service at 5:14 PM EDT on September 5, 2008


... Flash Flood Watch now in effect from Saturday morning through
Saturday evening...

The Flash Flood Watch is now in effect for

* portions of Maryland... the District of Columbia... Virginia and
northeast West Virginia... including the following areas... in
Maryland... Anne Arundel... Calvert... Carroll... Charles...
Frederick MD... Harford... Howard... Montgomery... northern
Baltimore... Prince Georges... southern Baltimore... St. Marys
and Washington. The District of Columbia. In Virginia...
Albemarle... Arlington/Falls Church/Alexandria... Augusta...
Clarke... Culpeper... Fairfax... Fauquier... Frederick VA...
Greene... King George... Loudoun... Madison... Nelson... Orange...
Page... Prince William/Manassas/Manassas Park... Rappahannock...
Rockingham... Shenandoah... Spotsylvania... Stafford and Warren.
In northeast West Virginia... Berkeley and Jefferson.

* From Saturday morning through Saturday evening

* heavy rain associated with Tropical Storm Hanna will move
northwest across the region this evening into Saturday. It
appears at this time that the heaviest rains would fall late
Friday night into late Saturday afternoon. This is largely
dependent on the exact track of Hanna. However... along the path
of this storm totals of 4 to 7 inches with localized amounts up
to 10 inches are expected. Latest flash flood guidance indicates
that amounts of 3 to 4 inches in 3 hours or less will cause
small streams and creeks to flow out of their banks.

* If heavy rain develops... expect small streams to overflow and
low lying roads to flood. Do not ever drive into flood waters.

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.

Peloquin


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Tropical Storm Warning
Issued by the National Weather Service at 5:00 PM EDT on September 5, 2008


Tidal-Potomac-key-bridge-MD 38.80n 77.05w





500 PM EDT Fri Sep 5 2008

Tidal-Potomac-key-bridge-MD 38.80n 77.05w





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