Hail and damaging thunderstorm winds moved across central Indiana throughout the day of August 16, 2007. Heavy rain also accompanied the severe storms.
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.
Hail and damaging thunderstorm winds moved across central Indiana throughout the day of August 16, 2007. Heavy rain also accompanied the severe storms.
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 15, 11:40 PM EST, 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 1240 AM EDT THU AUG 16 2007 .AVIATION...DISCUSSION FOR 06Z TAFS VFR THROUGH THE TAF PD. TSRA IN NORTHERN INDIANA AT 04Z WILL STAY NORTHEAST OF THE TAF SITES. WILL CONTINUE WITH BKN LAYER CLOUDS WHICH WILL LIKELY PREVENT FOG FORMATION AS IT DID LAST NIGHT. WIND WILL ALSO INCREASE LATER ON TONIGHT FURTHER INHIBITING FOG FORMATION. A COLD FRONT WILL PASS THROUGH CENTRAL INDIANA BETWEEN 12Z-18Z ON THURS. PRECIP OR THUNDER ASSOCIATED WITH THIS FRONT WILL BE DIFFICULT TO TIME AND PLACE SINCE AVAILABLITY OF MOISTURE IS STILL IN QUESTION AT THAT TIME. && .DISCUSSION... CURRENT FOCUS WILL BE ON CHANCES OF PRECIP. CURRENTLY AT THE SURFACE THERE WAS A FRONTAL BOUNDARY ACROSS CENTRAL INDIANA AND STRETCHING WESTWARD THROUGH CENTRAL ILLINOIS. TEMPERATURES TO THE SOUTH OF THE BOUNDARY WERE IN THE MID AND UPPER 90S. ON THE NORTH SIDE OF THE BOUNDARY IT RANGED FROM THE UPPER 70S TO MID 80S. ALOFT THERE REMAINED A VERY STRONG RIDGE AT H5 OVER THE SOUTHERN PLAINS AND LOWER MISSISSIPPI VALLEY. A WEAK SHORTWAVE WAS TRACKING ACROSS THE NORTHERN BOUNDARY OF THE RIDGE. THE MODELS WERE DIFFERENT IN SEVERAL WAYS. THE NAM SHOWED A MUCH MORE ROBUST CLUSTER OF OVERNIGHT STORMS TONIGHT ACROSS NORTH CENTRAL INDIANA. THE MET MOS ALSO HAD DEWPOINTS WAY TOO HIGH ACROSS THE AREA TODAY. THE MAV HAD DEWPOINTS TOO LOW AND SHOWED ALMOST NO PRECIP TONIGHT. FURTHER OUT...THERE WERE SOME PRETTY SIGNIFICANT DIFFERENCES IN MOS GUIDANCE FOR HIGHS AND LOWS. USED A BLEND EXCEPT AS NOTED BELOW. FOR TONIGHT...THE MAIN QUESTION WILL BE ON THE CHANCES OF PRECIP TONIGHT. A VORT MAX OVER THE PLAINS WILL CROSS NORTHERN INDIANA. THE NAM BLOWS UP A SUBSTANTIAL AREA OF PRECIP ACROSS NORTHERN PARTS OF THE AREA. HOWEVER THE MET POPS ARE ONLY SLIGHT CHANCE OR CHANCE IN MOST AREAS. THUS THERE WAS ACTUALLY NOT MUCH DIFFERENCE BETWEEN THE MAV AND MET POPS DESPITE THE MODELS LOOKING VERY DIFFERENT IN THEIR HANDLING OF TONIGHTS SYSTEM. THE VORT THAT THE NAM USES TO DEVELOP EVERYTHING TONIGHT SEEMS VERY HARD TO FIND. IT SEEMED THE GFS WITH ITS DEPICTION OF A WEAKER AND FARTHER WEST VORT MAX LOOKED MORE REALISTIC. SO IT SEEMS THAT A MORE SCATTERED NATURE IS LIKELY FOR TONIGHT...GIVEN THE VERY WARM MID LEVEL TEMPS AND THE LACK OF GOOD FORCING DID NOT REALLY BUY THE BIG AREA OF QPF...AND FELT THAT THE BULK OF ANYTHING THAT FORMS TONIGHT WILL BE NORTH OF OUR AREA. SO CONTINUED THE SLIGHT CHANCE IN THE SOUTH AND HIGHER CHANCE VALUES UP NORTH. TEMPS TONIGHT WILL REMAIN IN THE MIDDLE 70S. ON THURSDAY...LITTLE CHANGE IN THE OVERALL PATTERN. A STRONG RIDGE REMAINS TO OUR SOUTHWEST. A DEEPENING VORTEX IS FOUND OVER HUDSON BAY. A STALLED FRONTAL BOUNDARY WILL REMAIN SOMEWHERE ACROSS THE MIDWEST AND CONTINUE TO PROVIDE TEMPERATURE HEADACHES. I WAS RELUCTANT TO GO TOO WARM OR TOO COOL GIVEN THE SHARP GRADIENT THAT WILL EXIST IN TEMPS ON EITHER SIDE OF THE FRONT. THE MAV LOOKED TOO WARM FOR TOMORROW...ESPECIALLY CONSIDERING IT WAS MORE THAN FIVE DEGREES TOO WARM FOR TODAY. SO WENT CLOSER TO THE COOLER MET AND FWC WHICH SHOWS A HIGH OF NEAR 90. CONTINUED SOME CHANCE POPS BUT NOTHING LOOKS VERY IMPRESSIVE AS THERE WILL BE NO REAL FORCING. THE SOUTHERN RIDGE WILL BE STRONG AND PUSHING NORTH. OVERNIGHT THURSDAY IT WILL REMAIN VERY MILD. REMOVED THE POPS OVERNIGHT FOR A CONTINUED LACK OF FORCING. BY FRIDAY...SLIGHTLY COOLER AIR MAY SNEAK INTO THE AREA FROM THE NORTH. AND THE QUESTION WILL BE WHERE THE FRONT IS WITH THE SHARP DISCONTINUITY IN TEMPERATURES. THE MAV REMAINED VERY WARM AND WENT WITH THE COOLER MET AND FWC. THE WEEKEND LOOKS TO BE FAIRLY COOL PROVIDED THE FRONT MAKES IT SOUTH OF THE AREA LIKE THE MODELS SUGGEST. SOME EXTREMELY HOT AIR WILL BE OVER THE SOUTHERN PLAINS BUT FOR THE TIME BEING IT LOOKS LIKE THE COOLER AIR OVER THE NORTH WILL WIN OUT THIS WEEKEND. CHANCES OF PRECIP LATER THIS WEEKEND AS THE FRONT LIFTS BACK NORTH WITH THE HEAT RIDGE PUSHING BACK NORTHWARD OR AT LEAST TRYING TO. && .IND WATCHES/WARNINGS/ADVISORIES...NONE. && AVIATION...SALLY PUBLIC...JOHNSON
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE INDIANAPOLIS IN 1037 PM EDT WED AUG 15 2007 INZ021-028>031-035>049-054>057-065-161000- CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY- BOONE-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-VERMILLION-PARKE- PUTNAM-HENDRICKS-MARION-HANCOCK-HENRY-MORGAN-JOHNSON-SHELBY-RUSH- DECATUR- 1037 PM EDT WED AUG 15 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TONIGHT. THERE IS A CHANCE OF THUNDERSTORMS TONIGHT. A FEW SEVERE STORMS ARE POSSIBLE IN THE EARLY OVERNIGHT ESPECIALLY ALONG AND EAST OF A KOKOMO TO NEW CASTLE LINE. THE MAIN THREAT WILL BE DAMAGING WINDS...LARGE HAIL AND FREQUENT CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. SCATTERED THUNDERSTORMS WILL OCCUR THURSDAY. ONCE AGAIN THERE IS A SLIGHT RISK OF SEVERE WEATHER WITH THE MAIN THREAT BEING DAMAGING WINDS AND LARGE HAIL. ALSO THERE IS A CHANCE OF THUNDERSTORMS SATURDAY NIGHT AND EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE EARLY TONIGHT AND AGAIN ON THURSDAY. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) INZ051>053-062>064-070>072-161000- VIGO-CLAY-OWEN-MONROE-BROWN-BARTHOLOMEW-LAWRENCE-JACKSON-JENNINGS- 1037 PM EDT WED AUG 15 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TONIGHT. THERE IS A CHANCE OF THUNDERSTORMS OVERNIGHT. A FEW SEVERE STORMS ARE POSSIBLE WITH THE MAIN THREAT BEING DAMAGING WINDS...LARGE HAIL AND FREQUENT CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. SCATTERED THUNDERSTORMS WILL OCCUR THURSDAY AND THURSDAY EVENING. ONCE AGAIN THERE IS A SLIGHT RISK OF SEVERE WEATHER WITH THE MAIN THREAT BEING DAMAGING WINDS AND LARGE HAIL. ALSO THERE IS A CHANCE OF THUNDERSTORMS SATURDAY NIGHT AND EARLY NEXT WEEK. VERY HOT WEATHER WILL AGAIN BE THE RULE THURSDAY WITH AFTERNOON HEAT INDEX VALUES IN THE UPPER 90S TO AROUND 100. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE EARLY TONIGHT AND AGAIN ON THURSDAY. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) INZ060-061-067>069-161000- SULLIVAN-GREENE-KNOX-DAVIESS-MARTIN- 1037 PM EDT WED AUG 15 2007 /937 PM CDT WED AUG 15 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TONIGHT. THERE IS A CHANCE OF THUNDERSTORMS OVERNIGHT. A FEW SEVERE STORMS ARE POSSIBLE WITH THE MAIN THREAT BEING DAMAGING WINDS...LARGE HAIL AND FREQUENT CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. SCATTERED THUNDERSTORMS WILL OCCUR THURSDAY AND THURSDAY EVENING. ONCE AGAIN THERE IS A SLIGHT RISK OF SEVERE WEATHER WITH THE MAIN THREAT BEING DAMAGING WINDS AND LARGE HAIL. ALSO THERE IS A CHANCE OF THUNDERSTORMS SATURDAY NIGHT AND EARLY NEXT WEEK. VERY HOT WEATHER WILL AGAIN BE THE RULE THURSDAY WITH AFTERNOON HEAT INDEX VALUES IN THE UPPER 90S. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE EARLY TONIGHT AND AGAIN ON THURSDAY. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) KOCH
The Indianapolis radar (KIND), 105 km away, was scanning. The volume nearest the first event began at 05:29 UTC.
13 thunderstorm wind, 1 lightning, 1 hail, 1 heavy rain. Local standard time, as filed.
Trees and power lines were down due to damaging thunderstorm wind gusts.
Part of an enclosed porch was blown off of a house due to a damaging thunderstorm wind gust.
Lightning struck the Union City police department's communication system. The storm took out the base radio and a couple of computers.
A few trees were down across the city due to damaging thunderstorm winds.
Trees and power lines were down due to damaging thunderstorm winds. A tree fell on a shelter building which destroyed the structure, picnic tables, and a grill.
A tree limb fell on two or three vehicles at a repair shop on 3 West north of 3 North due to damaging thunderstorm winds.
Numerous trees were down due to damaging thunderstorm winds.
Parts of metal roofing was blown off of a factory due to damaging thunderstorm winds.
Several trees were reported down in Elnora due to damaging thunderstorm winds.
A tree fell on a house in Plainville and caused roof and gutter damage. Another tree fell on a garage damaging two sides of the building. This damage was due to damaging thunderstorm winds.
A television meteorologist reported a 61 mph gust on his wind equipment.
Trees were reported down due to damaging thunderstorm winds.
Power lines were down across U.S. 31 near Retreat due to damaging thunderstorm winds.
Heavy rain estimated at 2.25 inches fell causing some street flooding in Vincennes.
Small trees were reported down due to damaging thunderstorm winds.
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: 47420, 47421, 47437, 47422, 47438, 47444, 47423, 47424, 47432, 47436, 47425, 47426, 47427, 47428, 47429, 47430.