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Frederick, Maryland

  National Weather Service:
Flash Flood Watch , Inland Tropical Wind Warning
    

5-day forecast
Fri Sat Sun Mon Tue
Partly Cloudy Thunderstorm Partly Cloudy Partly Cloudy Chance of a Thunderstorm
Partly Cloudy T-storms Partly Cloudy Partly Cloudy Chance of T-storms
88° | 67° 76° | 67° 85° | 58° 83° | 61° 81° | 58°

Current conditions
As of 5:11 PM EDT
at Frederick, Maryland

Scattered Clouds
Temperature: 90°
Heat index:89°
Wind: SE 5 mph
Dewpoint: 59°
Humidity: 36%
Visibility: 10.0 miles
Forecast

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

This Afternoon...Mostly sunny. Highs in the upper 80s. South winds 10 to 15 mph.

Tonight...A slight chance of thunderstorms. A chance of showers in the evening...then showers after midnight. Lows in the upper 60s. Southeast winds 10 to 15 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. Northeast winds 15 to 25 mph...increasing to east 35 to 45 mph in the afternoon. Chance of rain near 100 percent.

Radar
Local radar » Loop
Regional radar » Loop

    Regional conditions
LocationConditionsTemp..
Frederick Scattered Clouds 90°
Westminster Clear 86°
Leesburg Scattered Clouds 88°
Maugansville Clear 84°
Dulles Mostly Cloudy 87°
Martinsburg Clear 81°
Riverdale Clear 86°
Fort Meade Clear 82°
Baltimore (Baltimore-Washington International) Mostly Cloudy 85°
Baltimore (Baltimore - Inner Harbor) Unknown 85°

Almanac

Key: T = Trace of precipitation; MM = data not available
September 5, 2008
Normal high:78° Record high:86° (2007)
Normal low:59° Record low:50° (1997)
Sunrise:6:41 AM Moon Rise: 12:49 PM
Sunset:7:33 PM Moon Set: 10:14 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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Inland Tropical Wind Warning
Issued by the National Weather Service at 2:30 PM EDT on September 5, 2008


... Tropical Storm Wind Warning remains in effect until 11 PM EDT
Saturday...

... New information...

The position of Tropical Storm Hanna was updated.

... Areas affected...

This statement recommends actions to be taken by persons in...
central Maryland... north central Maryland... northern Maryland...
central Virginia... northern Virginia and northwest Virginia.

... Watches/warnings...

Please listen to NOAA Weather Radio or go to weather.Gov on the
internet for more information about these additional hazards.

Flash Flood Watch.

... Precautionary/preparedness actions...

Preparations to protect life and property should be rushed to
completion. Listen to NOAA Weather Radio. Bring inside any outdoor
objects that can be picked up by the wind.

... Winds...

Sustained winds of 30 to 40 mph with gusts up to 50 mph are
possible beginning early Saturday morning and lasting into the
late afternoon. The strongest winds will occur east of the
Interstate 95 corridor... with southern Maryland having the highest
likelihood of strongest winds. Winds of this magnitude may cause
trees and power lines to fall and cause scattered power outages.

... Probability of hurricane/tropical storm conditions...

The probability of tropical storm conditions is around 20 percent.

... Inland flooding...

Rain will begin across southern Maryland this evening. The
heaviest rainfall is expected Saturday morning and afternoon.
Rainfall totals of 4 to 8 inches are possible. In areas that
experience heavy rain bands up to 10 inches of rain may occur.

Tropical storms are capable of producing very heavy rainfall in a
short amount of time. While it has been dry during the past month
it will be possible for smaller creeks and streams in the region
to rise above bankfull very quickly... creating a flash flood and a
potentially life threatening situation. If you see flash flooding
occurring... report this to law enforcement immediately. Motorists
should be alert for flooding on roadways on Saturday.

... Next update...

This statement will be updated by 600 PM.




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