SPECIAL WEATHER : Severe Thunderstorm Watch #793 Until 8 PM Eastern – EXPIRED

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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.

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