Isolated severe thunderstorms developed during the afternoon hours across southeast Tennessee. The storm reports were comprised of 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 developed during the afternoon hours across southeast Tennessee. The storm reports were comprised of 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 28, 1:45 PM EST, 1 hour 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 245 PM EDT TUE AUG 28 2007 .SHORT TERM...(TONIGHT AND WEDNESDAY)... OPERATIONAL MODELS AND SREF PROJECT INCREASING MOISTURE ADVECTION INTO THE SOUTHERN APPALACHIAN REGION AS RETURN FLOW AROUND SURFACE HIGH PRESSURE NEAR THE ATLANTIC COAST COMMENCES. HOWEVER...AM SKEPTICAL OF THE RELATIVELY HIGH POPS PROJECTED BY GFS GUIDANCE IN THE FIRST PERIOD AND HAVE GENERALLY UNDERCUT THOSE SOMEWHAT. POPS FOR THE SECOND PERIOD LOOK MORE REASONABLE AS SCATTERED DIURNAL CONVECTION DEVELOPS IN MOIST ATMOSPHERE REGIME...WITH SOMEWHAT BETTER COVERAGE EXPECTED IN THE SOUTHERN TIER. GFS GUIDANCE TEMPS LOOK REASONABLE FOR THE MOST PART AND DID NOT STRAY TOO FAR FROM THOSE VALUES. ANTICIPATE THE EXPECTED INCREASE IN MOISTURE AND THE CORRESPONDING INCREASE IN CLOUD COVER WILL TEND TO HOLD TEMPS DOWN IN THE SECOND PERIOD TO SOME DEGREE AS DEPICTED IN THE GUIDANCE. .LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY)... MORE ORGANIZED LIFT SHOULD INCREASE THE CHANCES OF RAIN ON THURSDAY AS THE UPPER RIDGE IS SUPPRESSED TO THE SOUTH AND WEST BY AN UPPER TROUGH OVER THE GREAT LAKES REGION. THE FLOW REMAINS WEAK AND THE TROUGH IS RATHER BROAD...SO WILL KEEP POPS IN THE CHANCE RANGE FOR THURSDAY AFTERNOON/EVENING. BEST PRECIP CHANCES LOOK TO BE IN SOUTHERN SECTIONS CLOSER TO A WEAK 850 MB LOW. SURFACE COLD FRONT LOOKS LIKE IT STALLS ACROSS THE OHIO VALLEY AND NEVER REACHES OUR AREA...SO THERE WILL BE NO SIGNIFICANT CHANGE IN AIR MASS THROUGH THE WEEKEND. THE GFS TAKES A WEAK 850 LOW OVER ALABAMA TO THE WEST...WHICH SUPPLIES MOISTURE TO THE AREA THROUGH TUESDAY. THE DEEP MOISTURE FROM THIS LOW IS A NEW FEATURE ON THE 12Z GFS...AND GIVEN THE DRY PATTERN WE HAVE BEEN STUCK IN...WILL AWAIT BETTER MODEL CONTINUITY BEFORE BITING ON HIGH POPS. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 72 89 72 87 70 / 40 50 20 50 50 KNOXVILLE MCGHEE TYSON AIRPORT, TN 70 91 69 85 70 / 20 20 20 40 40 OAK RIDGE, TN 70 92 69 85 69 / 20 20 20 40 40 TRI CITIES AIRPORT, TN 66 91 66 86 65 / 10 10 10 30 30 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && LCM/DGS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 403 PM EDT TUE AUG 28 2007 TNZ099-282100- HAMILTON- 403 PM EDT TUE AUG 28 2007 ...STRONG THUNDERSTORMS WILL AFFECT HAMILTON COUNTY THROUGH 5 PM... AT 401 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A CLUSTER OF STRONG THUNDERSTORMS OVER HAMILTON COUNTY...DRIFTING SLOWLY NORTHWEST AROUND 5 MPH. WINDS UP TO 40 MPH AND LOCALLY HEAVY RAINFALL ARE EXPECTED WITH THESE STORMS. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. DMG
The Northeast Alabama radar (KHTX), 95 km away, was scanning. The volume nearest the first event began at 20:32 UTC.
2 thunderstorm wind. Local standard time, as filed.
The Hamilton County Emergency Services reported one tree...large limbs and powerlines downed by thunderstorm winds on Tellico Drive near Ooltewah.
The County Highway Department reported one tree downed by thunderstorm winds south of Benton.
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: 51691, 51694.