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

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000 FXUS64 KMRX 031859 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 259 PM EDT THU SEP 3 2015 .SHORT TERM /TONIGHT AND FRIDAY/... A WEAK UPPER-LEVEL SHORTWAVE AND ITS ASSOCIATED HIGH CLOUDS ARE GRADUALLY EXITING THE REGION THIS AFTERNOON...LEAVING MOSTLY SUNNY CONDITIONS OVER MUCH OF THE EASTERN TENNESSEE VALLEY. SOME TOWERING CU AND SOME ISOLATED CONVECTION HAS DEVELOPED...MAINLY ACROSS SOUTHWEST VIRGINIA AND NORTHEAST TENNESSEE...AND ALONG THE NORTH CAROLINA MOUNTAINS. THIS ACTIVITY SHOULD BE DISORGANIZED AND SHORT- LIVED AS IT DISSIPATES WITH THE SETTING SUN. FOR TONIGHT...A MOSTLY CLEAR SKY...LIGHT WINDS AND MOIST BOUNDARY LAYER CONDITIONS WILL COMBINE TO CREATE SOME PATCHY FOG...MAINLY ALONG AREA RIVERS AND LAKES...AS WELL AS A FEW SHELTERED VALLEYS. A SIMILAR DAY WILL BE ON TAP FOR FRIDAY WITH HIGH PRESSURE AT THE SURFACE STILL IN PLAY. SLIGHTLY BETTER SHOWER/STORM COVERAGE IS POSSIBLE ALONG THE MOUNTAINS...BUT A MOSTLY CLEAR SKY AND DRY CONDITIONS IN THE VALLEY WILL ALLOW HIGHS TO ONCE AGAIN CLIMB INTO THE UPPER 80S TO LOWER 90S. .LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/... AFTERNOON DIURNAL CONVECTION WILL LINGER INTO FRIDAY EVENING...THROUGH MOST OF THIS ACTIVITY WILL BE CONFINED TO THE EASTERN THIRD AND MAINLY OVER HIGHER ELEVATIONS. A WEAK UPPER LOW WILL MOVE IN FROM THE NORTHEAST ON SATURDAY. THE ADDED MOISTURE AND LIFT ASSOCIATED WITH THIS FEATURE WILL ALLOW FOR SCATTERED CONVECTION TO DEVELOP ACROSS THE REGION ON SATURDAY AND SUNDAY. WILL THEN RETURN TO A MORE DIURNAL TYPE CONVECTIVE PATTERN MONDAY THROUGH WEDNESDAY. CONFIDENCE LOW BY THE END OF THE PERIOD...BUT MODELS WANT TO BRING A COLD FRONT THROUGH THE AREA AROUND THE THURSDAY TIME FRAME. FOR NOW WILL INTRODUCE CHANCE POPS FOR THURSDAY. THROUGH THE EXTENDED... TEMPERATURES SHOULD AVERAGE NEAR NORMAL. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 70 93 70 89 / 10 10 10 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 68 91 68 88 / 10 10 20 30 OAK RIDGE, TN 69 92 69 88 / 10 10 10 30 TRI CITIES AIRPORT, TN 64 89 64 85 / 10 30 20 30 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ AMP/MJB

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