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 290722 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 322 AM EDT FRI MAY 29 2015 .SHORT TERM...
-- Changed Discussion --
(TODAY AND TONIGHT)...HIGH PRESSURE HAS BEEN DOMINANT OVER THE SOUTHEAST STATES THE LAST SEVERAL DAYS AND THAT WILL CONTINUE THROUGH TONIGHT. A COLD FRONT OVER THE PLAINS STATES WILL MOVE SLOWLY SOUTH AND EAST BUT WILL ONLY MAKE IT INTO THE MID MS VALLEY AND GREAT LAKES BY SATURDAY MORNING. CLOUDS HAVE MOSTLY DISSIPATED OVERNIGHT WITH SOME PATCHY FOG FORMING IN A FEW PLACES. DO NOT THINK FOG WILL BE VERY WIDESPREAD SO ONLY HAVE IT IN GRIDDED FORECAST IN NORTHERN AND SOUTHERN SECTIONS UNTIL 12Z. TEMPERATURES HAVE COOLED INTO THE LOWER TO MID 60S BY 300 AM EDT. FOR NEXT 24 HOURS NOT MUCH CHANGE SINCE THURSDAY WITH PARTLY CLOUDY SKIES IN THE MORNING AND SOUTHWEST FLOW ALOFT KEEPING MOISTURE IN PLACE AND WEAK IMPULSES IN SOUTHWEST FLOW WITH DAYTIME HEATING CONTRIBUTING TO SCATTERED SHOWERS AND STORMS...A LITTLE MORE NUMEROUS EASTERN MOUNTAINS AND PLATEAU. SKIES SHOULD BECOME MOSTLY CLOUDY IN THE AFTERNOON. HIGHS TODAY AGAIN MOSTLY LOW TO MID 80S AND LOWS TONIGHT ONCE AGAIN IN THE LOWER TO MID 60S. AS HEATING ENDS CONVECTION SHOULD DROP OFF RAPIDLY LIKE THURSDAY EVENING AND OVERNIGHT. .LONG TERM...(SATURDAY THROUGH THURSDAY)...SOUTHWESTERLY FLOW ALOFT CONTINUES TO PULL IN LOW LEVEL MOISTURE AND WEAK INSTABILITY AHEAD OF AN APPROACHING FRONT. DIURNAL CONVECTION WILL BE THE MAIN THREAT SATURDAY THROUGH MONDAY FOR AFTERNOON THUNDERSTORMS WITH THE BEST CHANCE OVER HIGHER TERRAIN. ADDITIONAL CONVECTION WILL BE POSSIBLE AS SHOWERS AND THUNDERSTORMS DEVELOP ALONG THE COLD FRONT TO OUR WEST AND MOVE EASTWARD. THIS ACTIVITY WILL WEAKEN AS IT APPROACHES THE AREA AND THE ISOLATED TO SCATTERED CONVECTION WILL WEAKEN FURTHER WITH SUNSET. THE FRONT WILL MOVE IN AROUND THE LATE MONDAY INTO TUESDAY TIME FRAME. CONVECTION DEVELOPING AHEAD OF THIS FRONT WILL PROVIDE THE AREA WITH OUR BEST CHANCE OF PRECIP DURING THE EXTENDED. WILL CONTINUE TO SEE A CHANCE OF THUNDERSTORMS EACH PERIOD DURING THE REST OF THE PERIOD AS A COUPLE OF DISTURBANCES MOVE THROUGH AND DIURNAL CONVECTION CONTINUES TO CONTRIBUTE TO AFTERNOON CONVECTION.
-- End Changed Discussion --
&& .PRELIMINARY POINT TEMPS/POPS...
-- Changed Discussion --
CHATTANOOGA AIRPORT, TN 85 66 86 66 / 50 20 20 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 84 65 86 65 / 40 20 20 20 OAK RIDGE, TN 85 65 85 65 / 40 20 20 20 TRI CITIES AIRPORT, TN 84 62 83 62 / 40 20 20 20
-- End Changed Discussion --
&& .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ TD/MJB

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