Severe storms containing damaging thunderstorm winds and heavy rain moved through central Indiana on the evening of August 24, 2007. In addition, lightning struck Noblesville High School.
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 IND wrote it up.
Severe storms containing damaging thunderstorm winds and heavy rain moved through central Indiana on the evening of August 24, 2007. In addition, lightning struck Noblesville High School.
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 Indianapolis, IN wrote its last area forecast discussion before the first event at Aug 24, 1:45 PM EST, 1 hour 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 245 PM EDT FRI AUG 24 2007 .SHORT TERM /TONIGHT AND SATURDAY DAYTIME/... KIND 88D IS QUIET FOR THE MOMENT. A FEW TSRA WERE POPPING UP OVER SOUTHERN ILLINOIS WITHIN THE WATCH BOX THERE. TSRA TIMING AND FROPA ON SATURDAY WILL BE THE MAIN FOCUS. LAPS DATA SHOWS LIS IN THE -4 TO -6 RANGE WHILE SBCAPES HAVE INCREASED TO 1500-3200 J/KG. A 17Z ACARS OB SHOWS THE LOW LEVEL INVERSION HAS ERODED BUT H7 TEMPS STILL REMAIN WARM AROUND 11C. SPC MESOANALYSIS PAGE SHOWS GENERALLY DECREASING CIN BUT STILL SOME LINGERING AT 18Z. A FEW STORMS IN ILLINOIS CLOSE TO THE INDIANA BORDER HAVE DISSIPATED LIKELY DUE TO THE AFOREMENTIONED CONDITIONS. THEREFORE CONVECTION WILL LIKELY BE DELAYED UNTIL LATER ON THIS EVENING. WOULD NOT EXPECT ANYTHING IN THE CWA BEFORE 21Z. AFTER THAT A LINE OF STORMS WILL PASS THROUGH WITH DAMAGING WIND AND VERY HEAVY RAIN THE MAIN THREAT. A COLD FRONT WAS OVER IOWA THIS AFTERNOON AND WILL SLOWLY PROGRESS SOUTHEAST OVERNIGHT. WILL MOSTLY LEAN TOWARD THE NAM/RUC FOR FROPA THIS FRONT WILL BE THE FOCUS FOR ADDITIONAL PRECIPITATION OVERNIGHT AND INTO SATURDAY. THE FRONT SHOULD BE CLEAR OF THE CWA BY LATE SATURDAY EVENING AND END MOST OF THE RAINFALL. OVERNIGHT LOWS TONIGHT WILL BE IN THE LOW 70S WITH RAIN EXPECTED. ON SATURDAY WITH MOSTLY CLOUDY SKIES ANTICIPATED TEMPS WILL STAY UNDER 90 FOR THE VAST MAJORITY OF THE CWA. && .LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/... WL KEEP SLGT CHC OF TRWS IN SATURDAY EVE AS THE UPR TROF MOVES ACRS AND THE CD FNT SETTLES S OF THE OH RVR. AFTER THAT...SHOULD BE A PERIOD OF TRANQUIL WX AS SFC HIGH PRES SETTLES ACRS THE ERN CONUS WITH RIDGING ALOFT MOVING ACRS THE OH VLY AND A DRY COLUMN WITH MN LVL RH FM 30-40% THROUGH TUE. CHC OF TRWS AGAIN BY WED IN NW FLOW REGIME. WL NOT BE NEARLY AS WARM FOLLOWING THE FROPA AS SEEN IN CURRENT POST FRONTAL SFC OBS. MOS NUMBERS REFLECT THIS WELL AND ARE PRETTY CLOSE. && .AVIATION...DISCUSSION FOR 18Z TAFS AT THIS TIME IT LOOKS LIKE THE FIRST FEW HOURS OF THE TAF PD WILL BE DRY BUT TSRA WILL MOVE INTO LAF...HUF...IND AND EVENTUALLY BMG IN THAT ORDER. A FEW THINGS ARE WORKING AGAINST EARLY AFTERNOON CONVECTIVE DEVELOPMENT AND THAT IS CURRENT ACARS DATA SHOW AN INVERSION HANGING ON AROUND 900-950MB...CIRRUS OVERHEAD SEEMS TO BE THICKENING KEEPING SOMEWHAT OF A LID ON INSTABILITY AND 700MB TEMPS ARE ANYWHERE FROM 11C-12C WHICH IS WARM FOR TSRA DEVELOPMENT. THE RUC SEEMS TO BE CATCHING THE BITS OF CONVECTION OVER SOUTHERN ILLINOIS THIS AFTERNOON SO WILL USE THAT AS A GUIDE FOR TIMING CONVECTION INTO THE TAF SITES. THE RUC FORECASTS CAP EROSION NEAR LAF BY 21Z SO WOULD EXPECT TSRA TO BE IN THE AREA BY THEN. AS THE COLD FRONT GETS CLOSER AND MORE CAP EROSION OCCURS WILL INCLUDE TSRA IN HUF AND IND BY 23Z-24Z AND INTO BMG BY 01Z. AFTER 01Z TIMING WILL BE MORE DIFFICULT AND AMENDMENTS WILL BE NECESSARY TO UPDATE ANY CHANGES IN TIMING AND MOVEMENT OF ONGOING CONVECTION. COLD FRONT WILL BRING ANOTHER ROUND OF SHOWERS OVERNIGHT AND INTO THE DAYTIME. FRONT SHOULD BE THROUGH ALL TAF SITES AFTER THE END OF THIS TAF VALID PD. && && .IND WATCHES/WARNINGS/ADVISORIES...NONE && SHORT TERM/AVIATION...SALLY LONG TERM...MK
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE INDIANAPOLIS IN 325 PM EDT FRI AUG 24 2007 INZ021-028>031-035>041-043>045-251000- CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY- BOONE-TIPTON-HAMILTON-MADISON-DELAWARE-VERMILLION-PARKE-PUTNAM- 325 PM EDT FRI AUG 24 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A MODERATE RISK OF SEVERE WEATHER THIS AFTERNOON AND TONIGHT. SOME OF THE STORMS MAY BE SEVERE...WITH DAMAGING WINDS...LARGE HAIL AND HEAVY RAIN BEING THE PRIMARY THREATS. HOT TEMPERATURES WILL CONTINUE THIS AFTERNOON WITH HEAT INDEX VALUES NEAR 100 DEGREES POSSIBLE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. THERE IS A CHANCE OF THUNDERSTORMS SATURDAY AND AGAIN WEDNESDAY AND THURSDAY. SEVERE STORMS ARE NOT EXPECTED SATURDAY. LIGHTNING IS A THREAT FROM ANY THUNDERSTORM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) INZ042-046>049-051>057-060>065-067>072-251000- RANDOLPH-HENDRICKS-MARION-HANCOCK-HENRY-VIGO-CLAY-OWEN-MORGAN- JOHNSON-SHELBY-RUSH-SULLIVAN-GREENE-MONROE-BROWN-BARTHOLOMEW- DECATUR-KNOX-DAVIESS-MARTIN-LAWRENCE-JACKSON-JENNINGS- 325 PM EDT FRI AUG 24 2007 /225 PM CDT FRI AUG 24 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A SLIGHT RISK OF SEVERE WEATHER THIS AFTERNOON AND TONIGHT. SOME OF THE STORMS MAY BE SEVERE...WITH DAMAGING WINDS...LARGE HAIL AND HEAVY RAIN BEING THE PRIMARY THREATS. HOT TEMPERATURES WILL CONTINUE THIS AFTERNOON WITH HEAT INDEX VALUES NEAR 100 DEGREES POSSIBLE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. THERE IS A CHANCE OF THUNDERSTORMS SATURDAY AND AGAIN WEDNESDAY AND THURSDAY. SEVERE STORMS ARE NOT EXPECTED SATURDAY. LIGHTNING IS A THREAT FROM ANY THUNDERSTORM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) KOCH
The Evansville,IN radar (KVWX), 97 km away, was scanning. The volume nearest the first event began at 20:10 UTC.
13 thunderstorm wind, 1 lightning. Local standard time, as filed.
A trained spotter reported tree limbs, power lines, and signs down due to damaging thunderstorm winds.
Trees were down on Franklin Street in Delphi due to damaging thunderstorm winds.
Several tree limbs were reported blown down due to damaging thunderstorm winds.
Trees were reported down on South River Road, south of the airport, due to damaging thunderstorm winds.
Trees were down in Merom due to damaging thunderstorm winds.
Trees and limbs were blown down due to damaging thunderstorm winds. Minor structural damage also occurred.
Tree limbs and power lines were down due to damaging thunderstorm winds.
Tree limbs and power lines were down in Lyford due to damaging thunderstorm winds.
Tree limbs were down in Prairie Creek due to damaging thunderstorm winds.
Trees and power lines were down due to damaging thunderstorm winds.
Trees were reported down at County Road 1000 N near County Road 250 E near Carpentersville. Trees were also tree down at County Road 950 S and County Road 500 W.
Trees and power lines were down in Cloverland due to damaging thunderstorm winds.
Trees were reported down in Staunton due to damaging thunderstorm winds.
Lightning struck Noblesville High School causing damage to the roof and three classrooms. Damage was caused by the flames of the fire and the smoke.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2007Every state in 2007This day in weather historyWarnings in Indiana, 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: 47477, 47479, 47480, 47482, 47483, 47485, 47488, 47500, 47489, 47502, 47492, 47494, 47495, 47476.