An unusually strong (for July) upper trough formed over the Eastern Great Lakes and Upper Ohio Valley creating cold temperatures aloft. A meso-scale convective complex developed in this environment across Kentucky during the morning and advanced southeast into the MRX CWFA by afternoon.
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.
An unusually strong (for July) upper trough formed over the Eastern Great Lakes and Upper Ohio Valley creating cold temperatures aloft. A meso-scale convective complex developed in this environment across Kentucky during the morning and advanced southeast into the MRX CWFA by afternoon.
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 25, 8:20 AM EST, 5 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 920 AM EDT WED JUL 25 2007 .DISCUSSION...FORECAST LOOKS BASICALLY IN GOOD SHAPE FOR TODAY WITH LIKELY POPS OVER THE NRN TWO-THIRDS OF THE AREA. HOWEVER...WILL MAKE SLIGHT POP ADJUSTMENTS BASED ON LATEST SATELLITE AND RADAR TRENDS...WHICH SUPPORTS A LITTLE HIGHER POPS FOR SW VA OVER THE NEXT FEW HOURS (REST OF THE MORNING). WILL FRESHEN FORECAST GRIDS BASED ON LATEST OBSERVATIONS AND ADJUST MAX TEMPS IF NEEDED. WILL UPDATE ZFPMRX TO REMOVE PATCHY MORNING FOG AS WELL. && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && TG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 700 AM EDT WED JUL 25 2007 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-261000- 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- 700 AM EDT WED JUL 25 2007 /600 AM CDT WED JUL 25 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS ARE EXPECTED. SMALL HAIL IS POSSIBLE MAINLY NORTH OF I-40. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER NETWORK ACTIVATION WILL NOT BE NEEDED.
The Northeast Alabama radar (KHTX), 140 km away, was scanning. The volume nearest the first event began at 19:05 UTC.
10 thunderstorm wind, 2 hail. Local standard time, as filed.
A few trees were reported down across the north half of the county.
Quarter size hail fell on Dayton Mountain.
Three trees were reported down on Cherokee Drive in Dandridge. At the same residence, penny sized hail was reported along with a measured wind speed of 63 mph.
A few trees and power lines were reported down in the Dandridge vicinity.
Penny size hail on highway 25/70 in Newport.
Trees were reported down across the south half of the county.
A few trees were reported down in the Nine Mile vicinity.
One tree was reported down across a rail road track in Soddy-Daisy.
Numerous trees were reported down across the county.
Trees and power lines were reported down in Signal Mountain.
One tree was reported down on Povo Road near Madisonville.
Trees were reported down on Highway 64 between Ocoee and Ducktown.
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, July 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: 39924, 39904, 39927, 39929, 39931, 39933, 39907, 39936, 39934, 39939, 39940, 39946.