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. --
048 FXUS64 KMRX 051911 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 311 PM EDT THU MAY 5 2016 .SHORT TERM (THIS AFTERNOON THROUGH FRIDAY)...
-- Changed Discussion --
SCATTERED TO NUMEROUS SHOWERS CONTINUE ACROSS THE FORECAST AREA AS AN UPPER LEVEL LOW SPINS ACROSS THE SOUTHERN APPALACHIANS. THE COLD AIR ALOFT HAS BEEN SUFFICIENT ENOUGH FOR A FEW RUMBLES OF THUNDER. ANY STORM THAT FORMS WILL PRODUCE SMALL HAIL AND THERE HAVE BEEN SEVERAL REPORTS OF PEA SIZED HAIL ALREADY THIS AFTERNOON. IN ADDITION...THE FREEZING LEVEL IS RATHER LOW FOR THIS TIME OF THE YEAR AROUND 5000 FEET. DUE TO THIS LOWER FREEZING LEVEL...SNOW IS FALLING ACROSS THE HIGHER ELEVATIONS ALONG THE TENNESSEE/NORTH CAROLINA LINE. MOUNT LECONTE HAS REPORTED AROUND HALF AN INCH OF SNOWFALL ACCUMULATION ALREADY AND WOULD NOT BE SURPRISED TO SEE PEAKS ABOVE 5500 FEET WITH SNOWFALL ACCUMULATIONS OF 1-2 INCHES BY THE END OF THE NIGHT. THE UPPER LEVEL LOW WILL SLOWLY DRIFT TO THE NORTH AND EAST OVER THE NEXT COUPLE OF DAYS. TONIGHT THE FOCUS FOR PRECIPITATION WILL BE OVER NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA THANKS TO CONTINUED LOW LEVEL NORTHWESTERLY FLOW. PRECIPITATION WILL COME TO AN END TONIGHT ACROSS THE SOUTHERN AND CENTRAL VALLEY AND ACROSS THE CUMBERLAND PLATEAU. TEMPERATURES WILL BE MUCH COOLER THAN AVERAGE WITH LOWS IN THE LOWER 30S ACROSS THE MOUNTAINS TO MID 40S ACROSS THE VALLEY. TEMPERATURES WILL BEGIN TO MODERATE ON FRIDAY AS THE LOW SLOWLY CONTINUES TO THE NORTH AND EAST AS A RIDGE BUILDS IN FROM THE WEST. SHOWERS WILL LINGER ACROSS NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA. HIGHS WILL RANGE FROM LOW 50S IN THE MOUNTAINS TO LOW 70S ACROSS THE CENTRAL AND SOUTHERN VALLEY. .LONG TERM (FRIDAY NIGHT THROUGH THURSDAY)... THE UPPER LOW THAT BROUGHT COOLER AIR TO THE AREA WILL BE LIFTING OUT OF THE REGION FRIDAY NIGHT AND SATURDAY. AS THE LOW PULLS AWAY...A COUPLE OF WEAK SHORT WAVES ROTATING AROUND THE LOW WILL MOVE THROUGH BRINGING OCCASIONAL BANDS OF LIGHT SHOWERS INTO NORTHERN LOCATIONS. THEN...A FRONTAL BOUNDARY WILL BE POSITIONED ALONG OUR NORTHERN BORDER SUNDAY INTO MONDAY. A SERIES OF SHORT WAVES WILL RIDE ALONG THE BOUNDARY...CONTINUING TO BRING IN OCCASIONAL BANDS OF SHOWERS. MUCH OF THIS ACTIVITY WILL BE CONCENTRATED OVER NORTHERN AREAS. WILL BE IN AN ACTIVE WEATHER PATTERN THROUGH THE REST OF THE EXTENDED AS A SERIES OF FRONTS/SHORT WAVES MOVES ACROSS THE REGION. THERE WILL BE SUFFICIENT MOISTURE AND LIFT IN PLACE FOR A CHANCE OF SHOWERS AND THUNDERSTORMS EACH PERIOD. AS FOR TEMPERATURES...A WARMING TREND EARLY IN THE PERIOD WILL BRING TEMPERATURES TO NEAR NORMAL BY THE END OF THE WEEKEND AND ABOVE NORMAL BY THE MIDDLE OF NEXT WEEK.
-- End Changed Discussion --
&& .PRELIMINARY POINT TEMPS/POPS...
-- Changed Discussion --
CHATTANOOGA AIRPORT, TN 46 72 50 80 / 10 0 10 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 45 69 48 78 / 20 10 10 10 OAK RIDGE, TN 45 70 48 78 / 20 0 10 10 TRI CITIES AIRPORT, TN 42 64 45 74 / 80 50 10 20
-- End Changed Discussion --
&& .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ MA

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