Area Forecast Discussion Issued by NWS Knoxville/Tri Cities, TN
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000
FXUS64 KMRX 191805
AFDMRX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
200 PM EDT SUN MAY 19 2013
.AVIATION...-- Changed Discussion --
AN UPPER LOW CONTINUES TO SLOWLY TRACK ACROSS THE
SOUTHERN APPALACHIAN REGION TODAY. A WEAK BOUNDARY IN PLACE OVER
MIDDLE TN TO THE CUMBERLAND PLATEAU AS WELL AS INCREASING
INSTABILITY...WILL ALLOW WIDER COVERAGE OF CONVECTION AND ALSO ALLOW
FOR A GREATER CHANCE OF STRONG TO SEVERE THUNDERSTORMS THIS
AFTERNOON. THE UPPER LOW SHOULD BEGIN TO EXIT THE REGION
OVERNIGHT...LEAVING ONLY ISOLATED SHOWERS A POSSIBLY A FEW
THUNDERSTORMS MOVING ACROSS THE TAF SITES DURING THE LATER HALF OF
THE PERIOD. OVERALL...LOW CLOUDS WILL REMAIN BKN TO OVC AND
PREVAILING CONDITIONS WILL BE VFR...BUT EXPECT OCCASIONAL LOWERING
OF CIGS AND VSBYS FOR MVFR CONDITIONS.-- End Changed Discussion --
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.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.
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MJB