Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN

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000 FXUS64 KMRX 221720 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 1220 PM EST MON DEC 22 2014 .AVIATION...MVFR TO IFR CONDITIONS DUE TO CLOUDS WILL CONTINUE AT CHA THROUGH THE FORECAST PERIOD. MARGINALLY MVFR CONDITIONS AT TIMES TONIGHT AT TYS...OTHERWISE GENERALLY VFR AT BOTH TYS AND TRI. DOWNSLOPE WINDS WILL HELP KEEP CEILING MUCH HIGHER AT TYS AND TRI. AN UPPER LEVEL WAVE WILL MOVE ACROSS THE SOUTHERN APPALACHIANS TONIGHT INCREASING ISENTROPIC LIFT OVER EAST TENNESSEE. OCCASIONAL SHOWERS AND POSSIBLY THUNDER AT CHA WILL INCREASE BETWEEN 22Z AND 02Z THIS EVENING. AGAIN...DOWNSLOPE WINDS WILL LIMIT COVERAGE AND INTENSITY OF THE CONVECTION AT TRI. PER MIDNIGHT SHIFT DICUSSION...LOW LEVEL JET WILL INCREASE TONIGHT...BUT AT THIS POINT LOOKS BORDERLINE FOR ANY LOW LEVEL WIND SHEAR SO WILL KEEP OUT OF TAFS FOR NOW. && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$

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