Diurnal instability triggered a few severe thunderstorms during the afternoon hours. Storm reports were for damaging thunderstorm winds.
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.
Diurnal instability triggered a few severe thunderstorms during the afternoon hours. Storm reports were for damaging thunderstorm winds.
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 Jun 12, 10:10 AM EST, 4 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 1110 AM EDT THU JUN 12 2008 .DISCUSSION...MOIST...WEAK TO MODERATELY UNSTABLE AIR MASS REMAINS IN PLACE ACROSS THE SOUTHERN APPALACHIAN REGION TODAY. THIS WILL AGAIN ALLOW ISOLATED TO SCATTERED THUNDERSTORMS TO DEVELOP THIS AFTERNOON. EXPECT TO SEE INITIAL DEVELOPMENT ALONG THE EAST TN MOUNTAINS WITH STORMS MOVING INTO THE TN VALLEY DURING THE LATE AFTERNOON AND EVENING HOURS. ALL LOOKS GOOD IN THE CURRENT FORECAST...WILL UPDATE ZONE PACKAGE TO REMOVE MORNING WORDING. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 92 69 89 69 87 / 30 20 30 30 50 KNOXVILLE AIRPORT, TN 91 68 90 67 85 / 30 20 20 30 50 OAK RIDGE, TN 91 68 90 68 84 / 30 20 20 40 50 TRI CITIES AIRPORT, TN 89 65 89 63 84 / 30 20 20 30 50 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && MJB
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 452 AM EDT THU JUN 12 2008 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-130900- 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- 452 AM EDT THU JUN 12 2008 /352 AM CDT THU JUN 12 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP TODAY...ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS. SOME STORMS COULD BECOME SEVERE...PRODUCING DAMAGING WINDS...LARGE HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE EACH DAY THROUGH SATURDAY...MAINLY DURING THE AFTERNOON AND EVENING HOURS. SOME STORMS COULD BECOME SEVERE EACH DAY...WITH THE HIGHEST CHANCES EXPECTED ON SATURDAY. STORMS WILL BE CAPABLE OF PRODUCING DAMAGING WINDS...LARGE HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED ON SATURDAY. THE ISOLATED NATURE OF THE POSSIBLE SEVERE WEATHER TODAY AND FRIDAY LIMITS THE NEED FOR SPOTTERS ON THOSE DAYS. GH
The Knoxville radar (KMRX), 53 km away, was scanning. The volume nearest the first event began at 19:13 UTC.
8 thunderstorm wind. Local standard time, as filed.
Park officials reported a tree downed on a powerline by thunderstorm winds off Highway 441 near the Sugarlands Center.
Park officials reported a tree downed by thunderstorm winds across Highway 73 near Sinks.
Dispatch reported 3 trees downed by thunderstorm winds in the Seymour area.
Dispatch reported several trees downed by thunderstorm winds in the Knoxville area. A tree fell on home in Knoxville damaging the roof.
Dispatch reported several trees downed by thunderstorm winds in the Maryville area.
Dispatch reported a few trees downed by thunderstorm winds in the Fountain City area.
Dispatch reported a few trees downed by thunderstorm winds near Clinton Highway.
The public reported 2 trees downed by thunderstorm winds on Emory Road in Karns.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2008Every state in 2008This day in weather historyWarnings in Tennessee, June 2008
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: 111439, 111441, 111442, 111443, 111444, 111446, 111447, 111449.