An upper level trough made slow progress across the Great Lakes and Midwestern states driving a cold front toward the Southern Appalachian region. A line of thunderstorms formed ahead of an outflow boundary associated with the front.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MRX wrote it up.
An upper level trough made slow progress across the Great Lakes and Midwestern states driving a cold front toward the Southern Appalachian region. A line of thunderstorms formed ahead of an outflow boundary associated with the front. Instability and shear were just strong enough to allow for the development of isolated severe thunderstorms on the Cumberland Plateau near the Kentucky Border. A couple of the storms also produced some minor flooding in very heavy downpours.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Morristown, TN wrote its last area forecast discussion before the first event at Sep 2, 2:10 PM EST, 3 hours 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 310 PM EDT TUE SEP 2 2014 .SHORT TERM (TONIGHT AND WEDNESDAY)...SHOWERS AND A FEW THUNDERSTORMS ARE FINALLY FORMING ALONG SEVERAL BOUNDARIES AND TERRAIN FEATURES AT MID AFTERNOON. STAYED WITH THE LIKELY PROBABILITIES FOR CONVECTION IN ASSOCIATION WITH THE EASTERN LAKES AND MIDWEST UPPER TROUGH DROPPING BACK TO HIGH CHANCE CATEGORY TONIGHT. A "COLD" FRONTAL BOUNDARY WILL BE MOVING SOUTH INTO THE FORECAST AREA LATE TONIGHT INTO WEDNESDAY BUT IT WON'T MAKE IT VERY FAR LIKELY STALLING IN THE SOUTHERN PART OF THE FORECAST AREA AND THEN WASHING OUT FOR LATE WEEK. THEREFORE...MAINTAINED SOME CHANCE POPS FOR A FEW SHOWERS AND THUNDERSTORMS IN THE VICINITY OF AND SOUTH OF THIS WEAK FRONT. STAYED CLOSE TO NEARLY IDENTICAL MIN TEMP GUIDANCE TONIGHT WHILE OPTING FOR THE MIDDLE GROUND FOR MAX TEMPS ON WEDNESDAY. .LONG TERM (WEDNESDAY NIGHT THROUGH TUESDAY)...WEAK RIDGING ALOFT WILL BE THE DOMINANT FEATURE THROUGH THE PERIOD. LATE SUMMER WARMTH WILL CONTINUE WITH MAINLY DIURNAL CONVECTION MOST DAYS...BUT A WEAK FRONTAL PASSAGE THIS WEEKEND WILL RESULT IN AN INCREASE IN THE COVERAGE OF CONVECTION. RAIN PROBABILITIES WILL DECREASE A LITTLE FOR THE FIRST HALF OF THE NEW WORK WEEK FOLLOWING THE FROPA. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 71 90 70 93 / 50 30 20 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 70 89 68 91 / 50 20 20 20 OAK RIDGE, TN 70 89 67 91 / 50 20 20 20 TRI CITIES AIRPORT, TN 67 87 61 89 / 50 10 20 20 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 500 AM EDT TUE SEP 2 2014 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005- 006-008-031200- CHEROKEE-CLAY-SCOTT TN-CAMPBELL-CLAIBORNE-HANCOCK-HAWKINS-SULLIVAN- JOHNSON-MORGAN-ANDERSON-UNION-GRAINGER-HAMBLEN-NORTHWEST COCKE-COCKE SMOKY MOUNTAINS-NORTHWEST GREENE-SOUTHEAST GREENE-WASHINGTON TN- UNICOI-NORTHWEST CARTER-SOUTHEAST CARTER-ROANE-LOUDON-KNOX-JEFFERSON- NW BLOUNT-BLOUNT SMOKY MOUNTAINS-NORTH SEVIER-SEVIER SMOKY MOUNTAINS- SEQUATCHIE-BLEDSOE-RHEA-MEIGS-MCMINN-NORTHWEST MONROE-SOUTHEAST MONROE-MARION-HAMILTON-BRADLEY-WEST POLK-EAST POLK-LEE-WISE-SCOTT- RUSSELL-WASHINGTON- 500 AM EDT TUE SEP 2 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA...AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT... SHOWERS AND THUNDERSTORMS WILL BECOME MORE NUMEROUS THIS AFTERNOON AND EVENING...AS A WEAK COLD FRONT SLOWLY APPROACHES THE TENNESSEE RIVER VALLEY. SOME STORMS COULD BECOME SEVERE THIS AFTERNOON AND EVENING...BRINGING THE POSSIBILITY OF DAMAGING WINDS...LARGE HAIL... AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP EACH DAY THROUGH THE WEEKEND...ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS. A FEW STORMS COULD POSSIBLY BECOME STRONG TO SEVERE EACH DAY...BRINGING THE POSSIBILITY OF DAMAGING WINDS AND LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING...BUT IS NOT ANTICIPATED THE REST OF THE WEEK DUE TO THE ISOLATED NATURE OF THE EXPECTED THREATS. DMG
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
600 PM EDT TUE SEP 2 2014
TNZ012-013-022245-
CAMPBELL TN-SCOTT TN-
600 PM EDT TUE SEP 2 2014
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CAMPBELL AND
NORTHERN SCOTT COUNTIES UNTIL 645 PM EDT...
AT 559 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 15
MILES WEST OF ONEIDA...MOVING EAST AT 45 MPH.
WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE... ONEIDA...WINFIELD...KETCHEN...ELK
VALLEY AND BIG SOUTH FORK NATIONAL.
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 3659 8414 3643 8414 3645 8470 3650 8471
3660 8478
TIME...MOT...LOC 2159Z 270DEG 40KT 3656 8478
AMP.23The Knoxville radar (KMRX), 109 km away, was scanning. The volume nearest the first event began at 22:31 UTC.
3 thunderstorm wind. Local standard time, as filed.
One tree was reported down on Niggs Creek Road while another was downed on Williams Creek Road.
One tree was reported down in Harrogate on Shawnee Road.
One tree was reported down on Highway 31 near Sneedville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2014Every state in 2014This day in weather historyWarnings in Tennessee, September 2014
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 534193, 534194, 534195.