Isolated convection formed in response to weak orographic lift in weakly to moderately unstable atmosphere across the Southern Appalachian Mountains.
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.
Isolated convection formed in response to weak orographic lift in weakly to moderately unstable atmosphere across the Southern Appalachian Mountains.
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 Jul 16, 1:53 PM EST, 4 hours 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 253 PM EDT FRI JUL 16 2010 .SHORT TERM...TONIGHT THROUGH SUNDAY)...WEAK COLD FRONT HAS EASED SLIGHTLY EASTWARD THIS AFTERNOON...WITH ISOLATED TO SCATTERED CONVECTION DEVELOPING WELL IN ADVANCE OF THE FRONT. STORMS GENERALLY MOVING SE AT 15 MPH...AND OCNLY PULSING BRIEFLY IN INTENSITY. STORMS STAYING WELL BELOW STRONG TO SEVERE THUS FAR. MAX TEMPS CLIMBING TO TOP OUT JUST ABOVE YESTERDAY'S MAXES. WEAK FRONT SHOULD STALL ACROSS SE KY AND NE TN VICINITY LATE TONIGHT PLUS THE UPPER LEVEL TROUGH DEEPENS OVERNIGHT. THUS...CARRIED POPS FOR THE ENTIRE NIGHT...WITH A THIN RIBBON OF LOW LIKELY POPS ACROSS NRN PLATEAU INTO LEE/WISE COUNTIES OF SWRN VA. RAN CHANCE POPS ELSEWHERE...RANGING FROM 50 PERCENT NORTH TO 35 PERCENT SOUTH. FRONT AND UPPER TROUGH SUPPORT CATEGORICAL POPS FOR SATURDAY...BUT FALL BELOW LIKELY BY SATURDAY NIGHT AND SUNDAY. THIS IS DUE TO WEAK FRONT MOVING NORTH OR DISSIPATING...AND WEAK RIDGING ALOFT. ALTHOUGH I LIKED THE DRIER LOOK OF THE NAM MODEL FOR SUNDAY...BOTH GFS AND ECMWF SUPPORT AT LEAST HIGH CHANCE POPS SUNDAY. THUS...MADE LITTLE IF ANY CHANGES TO POPS FOR SUNDAY FOR NOW. ADDED PATCHY LATE NIGHT FOG FOR BOTH NIGHTS. OTHERWISE...CLOSELY FOLLOWED THE GFS MOS FOR MAX AND MIN TEMPS. .LONG TERM...(SUNDAY NIGHT THROUGH FRIDAY)...ADDITIONAL SHORTWAVE ENERGY DROPS SOUTHEAST ACROSS THE MIDWEST WHILE DRAGGING A COOL FRONTAL BOUNDARY INTO THE OHIO VALLEY AND CENTRAL APPALACHIANS MONDAY INTO TUESDAY. STAYED WITH THE SLIGHT THROUGH LOW CHANCE POPS FOR CONVECTION WITH SYNOPTIC BOUNDARY PRESSING A LITTLE CLOSER TO THE FORECAST AREA. UPPER LEVEL RIDGE EXPANDS AGAIN ACROSS THE SOUTHERN APPALACHIANS WEDNESDAY THROUGH FRIDAY KEEPING THUNDER SUPPRESSED. CONVECTION SHOULD MAINLY BE LIMITED TO HIGHER TERRAIN FEATURES DURING THIS PERIOD OF THE FORECAST. GENERALLY STAYED JUST UNDER MEX MOS GUIDANCE TEMPS. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 73 88 72 89 72 / 40 80 40 30 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 73 86 71 88 70 / 40 80 40 30 20 OAK RIDGE, TN 73 85 71 88 72 / 50 80 40 30 20 TRI CITIES AIRPORT, TN 69 85 67 88 67 / 50 80 40 30 20 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && TG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 500 AM EDT FRI JUL 16 2010 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-171000- 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 (400 AM CDT) FRI JUL 16 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT A COLD FRONT WILL SLOWLY APPROACH THE SOUTHERN APPALACHIAN REGION TODAY...WITH SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING THIS AFTERNOON AND INTO TONIGHT. A FEW OF THESE STORMS MAY BECOME SEVERE THIS AFTERNOON AND TONIGHT...BRINGING THE POSSIBILITY OF DAMAGING WINDS...OCCASIONAL CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE THROUGH MONDAY...WITH A FEW ISOLATED STORMS POSSIBLY BECOMING SEVERE EACH DAY. THE MAIN THREATS WILL CONTINUE TO BE THE POSSIBILITY OF DAMAGING WINDS...OCCASIONAL CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED DUE TO THE ISOLATED NATURE OF THE EXPECTED SEVERE THREAT. DMG
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 617 PM EDT FRI JUL 16 2010 TNZ099-100-162300- BRADLEY TN-HAMILTON TN- 617 PM EDT FRI JUL 16 2010 ...SIGNIFICANT WEATHER ADVISORY FOR BRADLEY AND HAMILTON COUNTIES UNTIL 700 PM EDT... AT 612 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES EAST OF HARRISON...OR 11 MILES SOUTHWEST OF CLEVELAND...MOVING NORTHEAST AT 15 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...CLEVELAND... MCDONALD...HOPEWELL AND TASSO. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. DGS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 656 PM EDT FRI JUL 16 2010 TNZ068-071-162345- LOUDON TN-NW BLOUNT TN- 656 PM EDT FRI JUL 16 2010 ...SIGNIFICANT WEATHER ADVISORY FOR BLOUNT AND LOUDON COUNTIES UNTIL 745 PM EDT... AT 653 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10 MILES SOUTHWEST OF MARYVILLE...MOVING NORTHEAST AT 10 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MARYVILLE AND CLOVER HILL. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. DGS
The Knoxville radar (KMRX), 71 km away, was scanning. The volume nearest the first event began at 23:01 UTC.
1 thunderstorm wind. Local standard time, as filed.
Several trees were reported down in Maryville. A large tree fell onto an old tractor shed damaging the structure at a residence on Morganton Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2010Every state in 2010This day in weather historyWarnings in Tennessee, July 2010
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: 238275.