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

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000 FXUS64 KMRX 250812 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 304 AM EST THU DEC 25 2014 .SHORT TERM (TODAY AND TONIGHT)...A FEW POCKETS OF LIGHT RAIN OR FLURRIES WILL LINGER OVER FAR NORTHERN AND EASTERN AREAS EARLY THIS MORNING AS YESTERDAY`S COLD FRONT CONTINUES TO PULL AWAY FROM THE AREA. COLDER AIR MOVING IN WILL BRING TEMPERATURES TO NEAR SEASONAL LEVELS THROUGH THE SHORT TERM. CLOUDS WILL BE SLOW TO ERODE BUT WILL EVENTUALLY SEE SKIES CLEARING FROM SOUTH TO NORTH DURING THE AFTERNOON AS SURFACE HIGH PRESSURE BUILDS IN. THE HIGH WILL DOMINATE THROUGH THE REST OF THE PERIOD FOR A QUIET AND BENIGN WEATHER PATTERN. .LONG TERM (FRIDAY THROUGH WEDNESDAY)...HIGH PRESSURE WILL BE IN CONTROL TO START. SHOULD BE DRY FRIDAY AND FRIDAY NIGHT. BY SATURDAY THE NEXT SYSTEM APPROACHES. MODELS INDICATE A FRONTAL BOUNDARY WILL MOVE INTO THE REGION AND WILL HANG AROUND THROUGH MONDAY. A WEAK WAVE OF LOW PRESSURE MAY MOVE ALONG THE BOUNDARY SUNDAY NIGHT AND MONDAY. WILL SEE RAIN MOVE INTO THE AREA SATURDAY...AND SHOULD CONTINUE TO SEE SOME RAIN AT TIMES THROUGH MONDAY. IT SHOULD BE WARM ENOUGH FOR ALL THIS PRECIP TO BE LIQUID. UNCERTAINTY HIGHER FOR TUESDAY AND WEDNESDAY...GIVEN MODEL CONSISTENCY PROBLEMS. HOWEVER...IT APPEARS BEST MODEL SUPPORT IS FOR SURFACE HIGH PRESSURE EXTENDING INTO THE AREA ALONG WITH DRIER AIR...SO WILL GO WITH A PRECIP FREE FORECAST FOR TUESDAY THROUGH WEDNESDAY. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 50 32 58 35 / 10 0 0 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 48 30 56 33 / 10 0 0 0 OAK RIDGE, TN 48 30 55 33 / 10 0 0 0 TRI CITIES AIRPORT, TN 45 27 56 27 / 10 0 0 0 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ MJB/LW

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