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Severe Thunderstorm Watch
Regional Animated Radar
URGENT – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 793
NWS STORM PREDICTION CENTER NORMAN OK
155 PM EDT SAT AUG 2 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
DISTRICT OF COLUMBIA
MARYLAND
SOUTHERN PENNSYLVANIA
NORTHERN VIRGINIA
NORTHERN AND EASTERN WEST VIRGINIA
COASTAL WATERS
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 155 PM UNTIL
800 PM EDT.
HAIL TO 1.5 INCHES IN DIAMETER…THUNDERSTORM WIND GUSTS TO 70
MPH…AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 120
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES WEST
NORTHWEST OF HAGERSTOWN MARYLAND TO 20 MILES WEST SOUTHWEST OF
STAUNTON VIRGINIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
REMEMBER…A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION…CONTINUE…WW 791…WW 792…
DISCUSSION…AT LEAST TWO BANDS OF ISOLATED STORMS ARE NOW
DEVELOPING ACROSS PARTS OF THE UPPER OH VALLEY AND CNTRL
APPALACHIANS ASSOCIATED WITH DEEPENING TROUGH/FRONTAL PASSAGE OVER
THE REGION. POCKETS OF STRONG HEATING HAVE BOOSTED INSTABILITY WITH
MLCAPE VALUES AOA 1000 J/KG AMIDST STRENGTHENING DEEP-LAYER SHEAR
SUPPORTIVE OF ORGANIZED/PERSISTENT UPDRAFTS. EXPECT ACTIVITY TO
CONTINUE TO EXPAND IN AREAL COVERAGE THROUGH THE AFTERNOON WITH
SUPERCELLS AND/OR RELATIVELY FAST-MOVING LINE SEGMENTS PRODUCING
DAMAGING WINDS AND HAIL.
Local Watch Outline Area
The National Weather Service has issued Severe Thunderstorm Watch
793 in effect until 8 PM EDT this evening for the following areas
The District of Columbia
In Maryland this watch includes 13 counties
In central Maryland
Anne Arundel Howard Montgomery
Prince Georges
In north central Maryland
Carroll Frederick Washington
In northern Maryland
Baltimore Harford
In southern Maryland
Calvert Charles St. Marys
In western Maryland
Allegany
In Virginia this watch includes 23 counties
In central Virginia
Albemarle Greene King George
Nelson Orange Spotsylvania
In northern Virginia
Arlington Culpeper Fairfax
Fauquier Loudoun Prince William
Stafford
In northwest Virginia
Clarke Frederick Madison
Page Rappahannock Shenandoah
Warren
In western Virginia
Augusta Highland Rockingham
In West Virginia this watch includes 8 counties
In northeast West Virginia
Berkeley Grant Hampshire
Hardy Jefferson Mineral
Morgan Pendleton
In Maryland this watch includes 1 independent city
In northern Maryland
Baltimore City
In Virginia this watch includes 11 independent cities
In central Virginia
Charlottesville City of Fredericksburg
In northern Virginia
City of Alexandria City of Fairfax City of Falls Church
City of Manassas City of Manassas Park
In northwest Virginia
City of Harrisonburg City of Winchester
In western Virginia
City of Staunton City of Waynesboro
This includes the cities of…Aberdeen…Alexandria…Annapolis…
Arlington…Baltimore…Bayard…Bel Air…Berryville…
Chantilly…Charles townn…Charlottesville…Charlottesville…
Chesapeake Beach…Columbia…Culpeper…Cumberland…Dahlgren…
Edgewood…Fairfax…Falls church…Fallston…Falmouth…
Fort Ashby…Franklin…Frederick…Fredericksburg…
Front Royal…Gaithersburg…Greenfield…Hagerstown…
Harrisonburg…Harrisonburg…Havre de Grace…Joppatowne…
Keyser…Laurel…Leesburg…Luray…Madison…Manassas…
Manassas Park…Martinsburg…McLean…Monterey…Moorefield…
Orange…Paw Paw…Petersburg…Reston…Romney…
Spotsylvania courthouse…St Marys…Stanardsville…Staunton…
Staunton…Sterling…Strasburg…Towson…Waldorf…Warrenton…
Washington…Washington…Waynesboro…Waynesboro…Westminster…
Winchester…Winchester…Woodbridge and Woodstock.
