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

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS64 KMRX 250655 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 255 AM EDT MON AUG 25 2014 .SHORT TERM (TODAY AND TONIGHT)...SURFACE DEWPOINT BOUNDARY WILL CONTINUE TO BISECT MRX CWA EXTENDING FROM NEAR SE TN/SW NC BORDER THROUGH THE NORTHERN CUMBERLAND PLATEAU. UPPER RIDGING WILL BUILD INTO THE AREA FROM THE WEST. WEAK LOW LEVEL CONVERGENCE ALONG SURFACE DEW POINT BOUNDARY WILL LEAD TO A POSSIBILITY OF WEAK SHOWERS EARLY THIS MORNING. THIS CONVERGENCE PUSHES SW THROUGH THE AREA THIS MORNING. THE H70-H50 DRIES OUT SIGNIFICANTLY THROUGH THE PERIOD. CONVECTION WILL HAVE A HARD TIME INITIATING AND WITH NE STEERING FLOW PRECIPITATION CHANCES TOO LOW FOR MENTION. TEMPERATURES WILL REMAIN SLIGHTLY WARM TODAY THEN COOLING TO BELOW NORMAL TONIGHT. .LONG TERM (TUESDAY THROUGH SUNDAY)...STRONG UPPER RIDGE WILL BE OVER THE REGION TUESDAY AND WEDNESDAY FOR WARM AND DRY CONDITIONS. THE RIDGE DAMPENS A BIT ON THURSDAY AND FRIDAY ALLOWING DIURNAL CONVECTION TO DEVELOP WITH BEST CHANCES OVER HIGHER ELEVATIONS. MAIN SYSTEM OF CONCERN THROUGH THE PERIOD WILL BE A COLD FRONT MOVING IN DURING THE WEEKEND. MODELS CONTINUE TO SHOW DIFFERENCES IN TIMING...THOUGH THE GFS IS TRENDING SLOWER...COMING MORE IN LINE WITH THE ECMWF. WITH CONFIDENCE SO LOW ON TIMING...FOR NOW...WILL KEEP POPS AT 20 TO 30 THROUGH THE WEEKEND. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 88 67 91 66 / 10 0 0 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 87 65 88 64 / 10 0 0 10 OAK RIDGE, TN 87 66 89 64 / 10 0 0 10 TRI CITIES AIRPORT, TN 86 56 86 61 / 10 0 10 10 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ SON/MJB

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.