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

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000 FXUS64 KMRX 190120 AAB AFDMRX AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 920 PM EDT SAT APR 18 2015 .DISCUSSION... REMNANT CONVECTION THAT DEVELOPED ALONG THE MOUNTAINS EARLIER THIS AFTERNOON IS GRADUALLY DYING WITH THE SETTING SUN. HOWEVER...AN ISOLATED TO PERHAPS SCATTERED LIGHT RAIN SHOWER WILL BE POSSIBLE OVER THE NEXT COUPLE OF HOURS. ATTENTION WILL THEN QUICKLY TURN TO THE NEXT ROUND OF PRECIPITATION THAT WILL BE MOVING IN LATER TONIGHT. A WARM FRONT WILL ADVANCE NORTHWARD INTO THE REGION IN RESPONSE TO A SURFACE LOW TRACKING NORTH FROM WESTERN TENNESSEE INTO THE OHIO VALLEY. DUE TO THE MOIST BOUNDARY LAYER AND THE ENHANCED ISENTROPIC LIFT OCCURRING ALONG/AHEAD OF THE FRONT...A BROAD AREA OF SHOWERS IS PROGGED TO DEVELOP AND WORK ITS WAY INTO THE REGION LATE TONIGHT AND EXPAND FROM SW TO NE OVER THE COURSE OF THE EARLY MORNING HOURS. WITH PWATS INCREASING TO 1.5 INCHES LATE TONIGHT INTO TOMORROW...LOCALLY HEAVY RAINFALL WILL BE A THREAT WITH THE STRONGEST ACTIVITY. HAVE ORIENTED THE GRIDS TO SHOW THE MORE FAVORED POPS OVER THE SOUTHERN VALLEY INITIALLY...AND THEN EXPAND THEM FURTHER NORTH WITH THE FRONT AFTER 09Z. LOWS WILL BE VERY MILD...AND BOTTOM OUT IN THE 60S IN MANY AREAS. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 64 77 61 72 / 100 80 40 50 KNOXVILLE MCGHEE TYSON AIRPORT, TN 62 74 60 71 / 100 90 40 50 OAK RIDGE, TN 62 74 60 70 / 100 90 40 50 TRI CITIES AIRPORT, TN 59 68 56 69 / 70 100 60 60 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ AMP

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