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Area Forecast Discussion Issued by NWS AREA FORECAST DISCUSSIONNATIONAL WEATHER SERVICE NASHVILLE TN342 AM CST THU DEC 27 2007.SHORT TERM (THU-FRI)...WEAKENING SFC TROUGH HEADING INTO THE GREAT LAKES REGION EARLYTHIS MORNING. PCPN COVERAGE W/SYSTEM BEGAN TO SCATTER AROUNDMIDNIGHT. DRY FORECAST TODAY. H9 MODEL MOISTURE REMAINS HIGH WITHMOS OVERCAST. LACK OF COLD ADVECTION AND 11-3.9 IR MOISTURE THINNINGWEST ENOUGH TO FORECAST LESS CLOUDS THIS AFTERNOON.ANOTHER QUICK SFC LOW APPROACHES FM TX TONIGHT. A MILD NIGHT WITHPCPN SPREADING INTO THE MID STATE FRI MORNING. NAM/GFS MODELSSHOW STRONGER WIND FIELD WITH THIS ONE VERSUS THE PREVIOUS TWO.GFS40 0-3 KM SRH > 1100 M2/S2. LITTLE SFC BASED SUPPORT FORTHUNDER IN THE MODELS. BUT WILL MENTION CHC THUNDER SOUTH ANDEAST MID TN WITH FROPA AND H8 WIND MAX..LONG TERM (SAT-WED)...SFC HIGH PRES IN CONTROL SAT. THERE COULD BE OVERRUNNING RAINS INTHE SOUTH SUN...BUT ONLY A SLIGHT CHC AT THIS POINT. SFC HIGH PRESHEADS INTO THE MID ATL MON...AND ANOTHER COLD FRONT IS EXPECTED TOPUSH INTO THE AREA EARLY NEXT WEEK. RETURN FLOW WEAK AND DRY AHEADOF FRONT. BUT AIR IS VERY COLD BEHIND IT. IT IS COLD ENOUGH FORSCATTERED SNOW SHOWERS ACR THE PLATEAU TUES INTO WED MORNING. COULDBE SOME LIGHT ACCUMS IN THIS REGION...AND FLURRIES WEST. VERY COLDLOW TEMPS TUE AND WED NIGHT...COLDEST OF THE SEASON TO DATE.