Isolated severe thunderstorms formed during the late afternoon hours across east Tennessee. Storm reports comprised of large hail and damaging 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.
Isolated severe thunderstorms formed during the late afternoon hours across east Tennessee. Storm reports comprised of large hail and damaging 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 Aug 3, 2:14 PM EST, 1 hour 21 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 314 PM EDT FRI AUG 3 2007 .SHORT TERM...(TONIGHT AND SATURDAY)...A LARGE RIDGE OF HIGH PRESSURE ALOFT...CURRENTLY CENTERED ACROSS THE SOUTHERN HIGH PLAINS WILL SLOWLY BUILD EAST INTO THE AREA. END RESULT WILL BE SLOWLY INCREASING THICKNESS AND HEIGHTS WITH HOT CONDITIONS ANTICIPATED OVER THE WEEKEND PRODUCING AFTERNOON HEAT INDICES BETWEEN 95 AND 105 DEGREES. TYPICAL SUMMER-TIME MOISTURE WILL COMBINED WITH AFTERNOON HEATING TO PRODUCE ISOLATED-WIDELY SCATTERED CONVECTION...MAINLY OVER THE HIGHER TERRAIN. .LONG TERM...(SATURDAY NIGHT THROUGH FRIDAY)...NOT MUCH CHANGE SINCE YESTERDAYS LONG RANGE FORECAST. UPPER LEVEL RIDGE CENTERED OVER SOUTHERN PLAINS MOVES SLOWLY EAST TO THE LOWER MS VALLEY MONDAY TO THE TENNESSEE VALLEY AND SOUTHEAST TUESDAY THROUGH THURSDAY WITH SOME RETROGRADING TO THE WEST POSSIBLE FRIDAY. A WEAK FRONT IN THE OHIO VALLEY MOVING EAST WILL SEND AN IMPULSE SOUTHEAST AROUND THE PERIPHERY OF THE RIDGE WHICH SHOULD AFFECT THE FORECAST AREA SUNDAY. BEST CHANCE OF SHOWERS AND THUNDERSTORMS WILL BE ACROSS THE NORTHEAST HALF. AS THE RIDGE MOVES OVERHEAD MONDAY. SHOWERS AND THUNDERSTORMS WILL BE MORE ISOLATED AND MAY ONLY OCCUR OVER THE MOUNTAINS. WILL KEEP 20 PERCENT IN ALL AREAS FOR NOW BUT LATER SHIFTS MAY WANT TO TAKE POPS OUT OF THE VALLEYS. HIGH TEMPERATURES WILL STAY IN THE LOWER TO MID 90S WITH PERSISTENCE THE BEST FORECAST. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 71 96 71 93 73 / 20 10 10 20 20 KNOXVILLE AIRPORT, TN 67 93 69 92 73 / 20 10 10 20 20 OAK RIDGE, TN 65 94 70 92 72 / 20 10 10 20 20 TRI CITIES AIRPORT, TN 63 91 65 91 67 / 20 10 10 30 20 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && DH/TD
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 900 AM EDT FRI AUG 3 2007 UPDATED TO INCLUDE RISK OF SEVERE WEATHER THIS AFTERNOON AND EVENING. NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-040945- 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- 900 AM EDT FRI AUG 3 2007 /800 AM CDT FRI AUG 3 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT ...A RISK OF SEVERE WEATHER EXISTS THIS AFTERNOON AND EVENING... PLENTY OF DAYTIME HEATING AND MOISTURE WILL ONCE AGAIN PRODUCE VERY UNSTABLE UNSTABLE CONDITIONS ACROSS THE SOUTHERN APPALACHIANS TODAY. SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE HIGHER ELEVATIONS BY EARLY THIS AFTERNOON THEN SPREAD INTO THE VALLEYS. SOME OF THESE STORMS COULD BECOME SEVERE WITH THE MAIN CONCERN BEING DAMAGING DOWNBURSTS WINDS...HAIL UP TO QUARTER SIZE...AND LOCALIZED TORRENTIAL RAINFALL AND FLOODING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING ACROSS EAST TENNESSEE...SOUTHWEST VIRGINIA...AND SOUTHWEST NORTH CAROLINA. DH
The Northeast Alabama radar (KHTX), 134 km away, was scanning. The volume nearest the first event began at 20:36 UTC.
6 thunderstorm wind, 1 hail. Local standard time, as filed.
The sheriffs office reported a few trees downed by thunderstorm winds across the northern half of county.
The Herald News in Dayton reported a section on roof from a barn and apartment near Dayton were damaged by winds. Numerous trees were also reported downed by thunderstorm winds in the Dayton area.
The Tennessee Department of Transportation reported two trees and a few limbs downed by thunderstorm winds on Highway 328 at the 4.3 mile marker.
The Hancock County Highway Department reported one tree down near Sneedville.
The sheriffs dispatch reported two trees downed by thunderstorm winds near Rosedale.
Sheriffs dispatch reported nickel-size hail near Rosedale.
Sheriffs dispatch reported one tree and numerous powerlines downed by thunderstorm winds in and around Knoxville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2007Every state in 2007This day in weather historyWarnings in Tennessee, August 2007
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: 50152, 50156, 50157, 50158, 50159, 50160, 50162.