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

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
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 041350 AAA AFDMRX AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 950 AM EDT WED MAY 4 2016 .DISCUSSION... A CANADIAN FRONT IS PROGRESSING THROUGH THE OHIO VALLEY THIS MORNING AS IT`S PARENT UPPER-LOW DEEPENS OVER THE GREAT LAKES. BOTH THESE FEATURES WILL DROP SOUTH INTO THE EASTERN TENNESSEE VALLEY AND SOUTHERN APPALACHIAN REGION THIS AFTERNOON AND INTO THE OVERNIGHT PERIOD. LOOKING AT THE LATEST MODEL GUIDANCE...THIS FRONT AND ITS ASSOCIATED PRECIPITATION AND CLOUD COVER WILL BE APPROACHING THE NORTHERN PLATEAU BETWEEN 18-21Z...AND MOVING ACROSS THE THROUGH THE AREA BETWEEN 21-03Z. THE PRIMARY MODE OF THIS ACTIVITY WILL BE RAIN SHOWERS...BUT GIVEN THE VERY STEEP LAPSE RATES /7 TO 7.5 DEG C PER KM/...SOME EMBEDDED THUNDER AND SMALL HAIL WILL BE POSSIBLE WITH THIS ACTIVITY. PRECIPITATION MAY ALSO LINGER ALONG THE HIGH TERRAIN AS THE UPPER LOW DROPS SOUTH LATE TONIGHT...RESULTING IN SOME LIGHT SNOW ACCUMULATIONS AT THE VERY TOP OF THE SMOKY MOUNTAINS /ABOVE 5000 FEET/. HAVE AN SPS TO ADDRESS THESE NEEDS. OVERALL..A MIX OF CLOUDS AND SUN TODAY...WITH PRECIPITATION MOVING IN LATE THIS AFTERNOON. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 71 47 63 48 / 70 50 20 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 67 45 58 46 / 70 80 50 30 OAK RIDGE, TN 67 46 59 47 / 80 80 40 30 TRI CITIES AIRPORT, TN 64 43 56 46 / 70 90 70 60 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ AMP

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