Instability brought by daytime heating allowed thunderstorms to fire up during the afternoon of April 27th. A few of the storms became strong to briefly severe.
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 OHX wrote it up.
Instability brought by daytime heating allowed thunderstorms to fire up during the afternoon of April 27th. A few of the storms became strong to briefly severe.
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 Apr 27, 9:37 AM CST, 1 hour 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 1037 AM CDT TUE APR 27 2010 .UPDATE... UL LOW CURRENTLY JUST UPSTREAM...WITH WEAK SFC/LL BOUNDARY JUST NORTH OF THERE. ASSOCIATED MODERATE-DEEPER MOISTURE WORKING SOUTH HELPING TO FLARE UP NUMEROUS SHOWERS...WITH COLD POOL ALOFT STEEPENING LAPSE RATE ENUF FOR ISO T...ACROSS MUCH OF THE CWA. THIS TREND EXPECTED TO CONTINUE AS UL LOW CUTS ACROSS THE NORTH AND EAST ZONES THIS AFTERNOON. PCPN SHUD BE LARGELY EAST LATE AS DRIER AIR STARTS TO FILTER IN. PLAN TO EXPAND HIGHER POPS FURTHER WEST AND SOUTH TODAY FOR EXPECTED PCPN. ONLY MINOR TEMPS CHANGES POSSIBLE. && .PREV DISCUSSION... /ISSUED 639 AM CDT TUE APR 27 2010/ UPDATE...FOR 12Z AVIATION FORECAST AVIATION... UPPER LEVEL LOW OVER CENTRAL MISSOURI WILL KEEP CLOUDS AND AT LEAST SCATTERED SHOWERS ACROSS MIDDLE TENNESSEE THROUGH ABOUT 28/00Z. SKIES SHOULD CLEAR QUICKLY THIS EVENING AS DRIER AIR WORKS INTO THE AREA. BOYD PREV DISCUSSION... /ISSUED 252 AM CDT TUE APR 27 2010/ SHORT TERM (THRU THU)... CURRENT...FIRST WAVE OF -SHRA MOVING ACROSS WRN AND NRN AREA OF CWA ATTM. BKN-OVC SKIES...WITH TEMPS IN COOLISH LOWER 50S. UPPER LOW PROGGED TO MOVE SE INTO CWA...W/ ASSOCIATED COLD POOL. HI POPS E 1/2 AND THERE IS A CHANCE OF ISOLTD TRW WITH COLD POOL BY AFTERNOON. RAPID CLEARING TONITE...AND POSSIBLE FROST PLATEAU AS WINDS DECOUPLE. HI PRES AND CLEAR SKIES WED AND WED NITE...WITH SUNNY SKIES THU BUT INCREASING SRLY FLOW. LONG TERM... STILL HAVING A PROBLEM WITH MODELS FORECASTING MULTIPLE HEAVY RAIN EVENTS SAT INTO TUE...MOVING SMACK INTO H5 BLOCKING RIDGE. GFS ALREADY BACKING OFF ON POPS FOR FRI. WILL GO WITH HI CHANCE POPS FOR NOW. && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && 07
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 526 AM CDT TUE APR 27 2010 TNZ005>011-022>034-056>066-075-077>080-093>095-281030- STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-BENTON- HOUSTON-HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE- SMITH-JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS- WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-CANNON-DE KALB-WHITE- CUMBERLAND-BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE- GILES- 526 AM CDT TUE APR 27 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY AN ACTIVE WEATHER PERIOD IS POSSIBLE SATURDAY THROUGH MONDAY WITH STRONG THUNDERSTORMS AND HEAVY RAINFALL. THERE IS UNCERTAINTY WITH RESPECT TO TIMING AND PLACEMENT OF THE STORMS. THEREFORE CONTINUE TO MONITOR THE FORECAST THROUGHOUT THE WEEK FOR UPDATES ON THIS POTENTIALLY HAZARDOUS WEATHER. 17/MAG
The Nashville radar (KOHX), 31 km away, was scanning. The volume nearest the first event began at 17:02 UTC.
2 hail, 2 thunderstorm wind. Local standard time, as filed.
Nickel size hail was reported on the Davidson and Williamson county line at interstate 65.
One tree was reported down in Lawrenceburg which fell on a car...trapping a person inside. Estimated wind gust was around 50 mph.
Minor damage occurred to siding on a home. Bradford Pear trees were also damaged.
Trained spotter reported quarter size hail at the intersection of Interstate 40 and Interstate 840 in Wilson County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2010Every state in 2010This day in weather historyWarnings in Tennessee, April 2010
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: 231555, 231564, 231563, 231552.