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

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000 FXUS64 KMRX 251858 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 258 PM EDT TUE AUG 25 2015 .SHORT TERM...(TONIGHT AND WEDNESDAY)...SUNNY SKIES AND BELOW NORMAL TEMPERATURES IN THE 70S TO LOWER 80S AT MID AFTERNOON ARE QUITE COMFORTABLE FOR THIS TIME OF YEAR. SURFACE HIGH PRESSURE IS CENTERED TO THE NORTHWEST OVER THE MID MS VALLEY AND A SLOW MOVING UPPER LEVEL LOW ACROSS SOUTHERN CANADA AND THE GREAT LAKES RESPONSIBLE FOR THE DEEP UPPER TROUGH OVER THE EASTERN STATES WILL MOVE ONLY SLOWLY EAST NEXT 24 HOURS. THE SURFACE HIGH WILL MAKE IT INTO THE WESTERN PART OF THE TN AND OH VALLEYS WEDNESDAY. THE ATMOSPHERE IS VERY DRY AND WITH GOOD RADIATIONAL COOLING TEMPERATURES WILL DROP DOWN INTO THE 50S WITH SOME UPPER 40S IN THE HIGHER ELEVATIONS. ONLY ISOLATED AREAS OF FOG EXPECTED ESPECIALLY NEAR BODIES OF WATER...SINCE WATER TEMPERATURES ARE STILL WARM. THE MOST LIKELY AREAS ARE NEAR THE TRI CITIES AIRPORT AND IN SW NC NEAR ANDREWS/MURPHY. WILL NOT INCLUDE IN THE FORECAST FOR NOW BUT IF SIGNIFICANT LAKE AND RIVER FOG FORMS TONIGHT LATER SHIFTS MAY HAVE TO ADD IT IN. BELOW NORMAL TEMPERATURES WILL CONTINUE WEDNESDAY AS HIGHS ONLY REACH THE UPPER 70S TO LOWER 80S ONCE AGAIN. FOLLOWED CLOSE TO MAV TEMPS FOR LOWS TONIGHT AND HIGHS WEDNESDAY. .LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY)...A DRY/COOL NORTHWEST FLOW WILL PREVAIL THROUGH THE REMAINDER OF THE WORK WEEK...AS IT WILL FEEL A LOT LIKE AUTUMN /PARTICULARLY IN THE EVENING AND AT NIGHT/. A SURFACE WILL REMAIN IN PLACE...PROMOTING MOSTLY SUNNY CONDITIONS...WHILE A NORTHERLY FLOW HELPS TO KEEP TEMPERATURES IN CHECK IN THE LOW TO MID 80S. THE DRY AIR IN PLACE WILL HELP TO KEEP DEW POINTS LOW...MAKING FOR VERY COMFORTABLE CONDITIONS OUTDOORS. DUE TO THE CLEAR AND CALM CONDITIONS... TEMPERATURES WILL DROP OFF QUICKLY AFTER SUNSET AND BOTTOM OUT IN THE 50S TO LOWER 60S OVER THE NEXT SEVERAL NIGHTS. HEADING TO TOWARD THE WEEKEND INTO EARLY...SOME DIURNAL SCATTERED THUNDERSTORMS WILL BE POSSIBLE ALONG THE HIGHER TERRAIN...WITH PERHAPS SOME SLIGHTLY MORE WIDESPREAD ACTIVITY WITH A WEAK TROUGH PASSAGE. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 58 83 63 84 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 58 82 60 83 / 0 0 0 0 OAK RIDGE, TN 57 82 60 83 / 0 0 0 0 TRI CITIES AIRPORT, TN 53 80 56 81 / 0 0 0 0 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ TD/AMP

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