A boundary across the area triggered thunderstorms during the afternoon and evening hours. A few of the storms produced damaging thunderstorm wind.
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.
A boundary across the area triggered thunderstorms during the afternoon and evening hours. A few of the storms produced damaging thunderstorm wind.
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 Aug 3, 12:45 PM EST, 21 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 145 PM EDT WED AUG 3 2011 .AVIATION...THUNDERSTORMS MOVING FROM KY INTO TRI AND TYS AREA TODAY ALONG A WEAK FRONTAL BOUNDARY. MAY DIP BRIEFLY BELOW VFR WITH ANY THUNDERSTORM...BUT WILL KEEP IT VFR FOR NOW. EXPECTING IFR FOG AT TRI AGAIN TONIGHT WITH LINGERING LOWERING LOW LEVEL MOISTURE. SHOULD BE BACK TO VFR BY 14Z. && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && GH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 502 AM EDT WED AUG 3 2011 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-040900- 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- 502 AM EDT WED AUG 3 2011 /402 AM CDT WED AUG 3 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT A WEAK COLD FRONT WILL MOVE INTO THE SOUTHERN APPALACHIAN REGION BY LATE THIS AFTERNOON AND EVENING...WITH SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING AHEAD OF IT. A FEW OF THESE STORMS MAY BECOME STRONG TO SEVERE...PRODUCING DAMAGING WINDS...LARGE HAIL...CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE WEAK COLD FRONT WILL BECOME NEARLY STATIONARY THURSDAY AND FRIDAY ACROSS SOUTHEAST TENNESSEE WITH WIDELY SCATTERED SHOWERS AND THUNDERSTORMS POSSIBLE BOTH DAYS. A FEW STRONG STORMS ARE POSSIBLE. SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EVENING.
The Knoxville radar (KMRX), 109 km away, was scanning. The volume nearest the first event began at 18:04 UTC.
12 thunderstorm wind. Local standard time, as filed.
Law enforcement personnel reported a few trees downed by thunderstorm wind in the Elgin area.
Law enforcement personnel reported a few trees downed by thunderstorm wind on railroad tracks, Mountain View Road and Highway 52 in the Robbins area southwest of Huntsville.
A trained spotter reported a roof blown off a storage building as well as numerous trees and powerlines downed by thunderstorm wind on Knoxville Highway near Wartburg.
Law enforcement personnel reported numerous trees downed by thunderstorm wind in the Wartburg area. Trees were downed on Potters Valley Road as well as White Pine Estate Road and Armes Chapel Road. Additional trees were downed by thunderstorm wind on Highway 27 south of Wartburg.
Law enforcement personnel reported a several trees downed by thunderstorm wind in Rockwood and Kingston.
Law enforcement personnel reported several trees downed by thunderstorm wind at the intersection of North Shore Drive and Blue Grass Road as well as at Campbell Station Road near Farragut.
Law enforcement personnel one set of powerlines downed by thunderstorm wind on Northshore Drive near Farragut.
Law enforcement reported a tree downed by thunderstorm wind at the intersection of Westland Drive and Sherwood Drive near Knoxville.
Law enforcement personnel reported several trees downed by thunderstorm wind across the northern part of the county.
Law enforcement personnel reported one set of powerlines downed by thunderstorm wind on Topside Road north of Alcoa.
Utility company personnel reported a large tree and powerlines downed by thunderstorm wind on High School Road near Knoxville.
Law enforcement personnel reported a tree and powerlines downed on Mills Spring Road by thunderstorm wind near Jefferson City. Powerlines also knocked down in Jefferson City by the wind.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2011Every state in 2011This day in weather historyWarnings in Tennessee, August 2011
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: 339440, 339446, 339456, 339469, 339482, 339484, 339485, 344175, 339486, 339487, 339488, 339489.