A small cluster of thunderstorms was moving west to east across Macon County on the evening of July 17. A lightning bolt from a thunderstorm|destroyed a feed barn.
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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 OHX wrote it up.
A small cluster of thunderstorms was moving west to east across Macon County on the evening of July 17. A lightning bolt from a thunderstorm|destroyed a feed barn.
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 Nashville, TN wrote its last area forecast discussion before the first event at Jul 17, 2:26 PM CST, 3 hours 4 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 326 PM CDT TUE JUL 17 2007 .DISCUSSION... LACK OF FORCING HAS PREVENTED MUCH IN THE WAY OF CONVECTIVE DEVELOPMENT ACROSS THE MID STATE THIS AFTERNOON. ONLY ISOLATED TO SCATTERED WEAK CONVECTION IS ONGOING ACROSS THE SOUTHEASTERN TWO THIRDS OF THE MID STATE. TO OUR NORTH HOWEVER...AN AREA OF SHOWERS AND THUNDERSTORMS STRETCHES FROM EASTERN MO INTO SOUTHERN IN. THIS ACTIVITY IS MOVING SOUTHWARD TOWARD THE MID STATE. WILL IT REACH OUR AREA? THAT IS THE BIG QUESTION FOR THIS FORECAST....THATS FOR SURE. THE CURRENT PATTERN WE ARE IN IS THE SUMMERTIME NORTHWEST FLOW. OVER RECENT YEARS...THE MODELS HAVE DONE A TERRIBLE JOB AT HANDLING THESE SOUTHWARD MOVING MCS SYSTEMS. NUMEROUS TIMES...NUMERIC GUIDANCE HAS RECOMMENDED 10 POPS ONLY TO HAVE AN MCS ROLL RIGHT THROUGH THE MID STATE. ADDITIONALLY...SUPPORTING QPF GRAPHICS OF A TRACE OFR LESS HAVE BEEN OF LITTLE HELP. HAVING SAID THAT...WE ARE IN THAT SAME SITUATION AGAIN...THE INFAMOUS NW FLOW. FOR THIS FORECAST...I WILL GO 40 PERCENT NW ZONES AND 30 PERCENT ELSEWHERE. THE LATEST RADAR TREND DOES SHOW SOME WEAKENING WITH THIS SYSTEM AS IT IS HEADING OUR WAY. THE GFS SOLUTION...AND TO SOME DEGREE THE NAM...SHOWS THE ASSOCIATED OMEGA FIELD MAKING ITS WAY ACROSS THE MID STATE BY 12Z. IF THE MCS HOLDS UP...IT WILL REACH OUR NORTHWESTERN COUNTIES AROUND 6 PM OR 7 PM THIS EVENING. FOR THE REST OF THE FCST...MODELS ARE LEANING TOWARD A DRIER SCENARIO FOR WED AND WED NT. IN FACT...I WILL LEAVE POPS OUT FOR THOSE PERIODS AS JUST ISOLATED ACTIVITY AT BEST...IS EXPECTED. I WILL INCLUDE A 20 POP FOR THE PLATEAU WHERE THE MOISTURE LEVELS ARE HIGHER. FOR NEAR TERM TEMPS...MAV HIGH TEMP GUIDANCE LOOKS REASONABLE. MIN GUIDANCE HOWEVER...LOOK A TAD TOO COOL. WILL ADJUST ACCORDINGLY. THU NIGHT AND FRIDAY...AN UPPER LOW IS STILL EXPECTED TO CARVE OUT A RATHER DEEP TROUGH OVER THE EASTERN U.S.. THIS WILL ENABLE A COLD FRONT TO MOVE SOUTHWARD AND BRING A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS ON THU NIGHT AND THE FIRST HALF OF FRIDAY. IN THE EXT FCST...A DRY AND NON-ACTIVE NW FLOW WILL PREVAIL. TEMPS AND RH LEVELS WILL BE A FEW DEGREES BELOW NORMAL THROUGH THE PERIOD. .PRELIMINARY POINT TEMPS/POPS... NASHVILLE 71 93 72 93 / 30 10 10 20 CLARKSVILLE 71 93 72 92 / 40 10 10 20 CROSSVILLE 65 86 67 87 / 40 20 10 20 COLUMBIA 70 92 71 92 / 30 10 10 20 LAWRENCEBURG 69 90 70 92 / 30 10 10 20 WAVERLY 71 92 71 92 / 40 10 10 20 && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && 21
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 530 AM CDT TUE JUL 17 2007 TNZ005>011-022>034-056>066-075-077>080-093>095-181030- BEDFORD-BENTON-CANNON-CHEATHAM-CLAY-COFFEE-CUMBERLAND-DAVIDSON- DEKALB-DICKSON-FENTRESS-GILES-GRUNDY-HICKMAN-HOUSTON-HUMPHREYS- JACKSON-LAWRENCE-LEWIS-MACON-MARSHALL-MAURY-MONTGOMERY-OVERTON-PERRY- PICKETT-PUTNAM-ROBERTSON-RUTHERFORD-SMITH-STEWART-SUMNER-TROUSDALE- VAN BUREN-WARREN-WAYNE-WHITE-WILLIAMSON-WILSON- 530 AM CDT TUE JUL 17 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT SLOW MOVING STORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TODAY. THIS MAY LEAD TO SHORT TERM WATER PONDING ISSUES ON SUSCEPTIBLE ROADWAYS AND POOR DRAINAGE LOCATIONS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. MAG
The Nashville radar (KOHX), 62 km away, was scanning. The volume nearest the first event began at 23:30 UTC.
1 lightning. Local standard time, as filed.
A small cluster of thunderstorms was moving west to east across Macon County on the evening of July 17. A lightning bolt from a thunderstorm|destroyed a feed barn. The barn was located at 3716 Akersville Rd. The Lafayette F.D. was on the scene for about 90 minutes trying to put out the fire.
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: 37933.