THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE - TopicsExpress



          

THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH UNTIL 11:00AM EDT Sel3 Spc Ww 130804 Urgent - Immediate Broadcast RequestedSevere Thunderstorm Watch Number 303Nws Storm Prediction Center Norman OK400 AM EDT Thu Jun 13 2013 The Nws Storm Prediction Center Has Issued A * Severe Thunderstorm Watch For Portions Of District Of Columbia Western And Central Maryland Central Pennsylvania Northern Virginia Eastern West Virginia Panhandle Coastal Waters * Effective This Thursday Morning From 400 AM Until 1100 AM EDT. * Primary Threats Include... Several Damaging Wind Gusts To 70 Mph Possible Several Large Hail Events To 1.5 Inches In Diameter Possible A Few Tornadoes Possible The Severe Thunderstorm Watch Area Is Approximately Along And 90Statute Miles East And West Of A Line From 25 Miles WestNorthwest Of Williamsport Pennsylvania To 40 Miles Southwest OfWashington District Of Colum. For A Complete Depiction Of TheWatch See The Associated Watch Outline Update (wous64 Kwns Wou3). Precautionary/Preparedness Actions... Remember...A Severe Thunderstorm Watch Means Conditions AreFavorable For Severe Thunderstorms In And Close To The WatchArea. Persons In These Areas Should Be On The Lookout ForThreatening Weather Conditions And Listen For Later StatementsAnd Possible Warnings. Severe Thunderstorms Can And OccasionallyDo Produce Tornadoes. && Other Watch Information...Continue...Ww 302... Discussion...The Northern Flank Of A Strong/Severe MesoscaleConvective System Is Generally Maintaining Strength Across The UpperOhio Valley. Activity Is Expected To Continue Eastward Along A WarmFrontal Zone Across The Alleghenies Through Much Of CentralPennsylvania By Mid Morning...With A Risk For Potentially DamagingWind Gusts. While The South End Of The Convective System Has BeenWeaker...Potential Exists For The Associated Outflow Boundary ToSupport New Strong/Severe Storm Development As It Advances AcrossThe Alleghenies And Blue Ridge...Into An Unstable Environment AcrossThe Washington D.C./Baltimore Area By 11-13z. Aviation...A Few Severe Thunderstorms With Hail Surface And AloftTo 1.5 Inches. Extreme Turbulence And Surface Wind Gusts To 60Knots. A Few Cumulonimbi With Maximum Tops To 500. Mean StormMotion Vector 28040. ...Kerr
Posted on: Thu, 13 Jun 2013 14:46:24 +0000

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