A cold front came sweeping across Central Indiana during the late afternoon and evening hours on April 7th. This frontal boundary generated a line of thunderstorms that produced a singular, severe hail report.
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.
A cold front came sweeping across Central Indiana during the late afternoon and evening hours on April 7th. This frontal boundary generated a line of thunderstorms that produced a singular, severe hail report. A few other hail reports came in below severe limits.
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 Apr 7, 1:25 PM EST, 4 hours 24 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 225 PM EDT WED APR 7 2010 .DISCUSSION...FORECAST ISSUE IS DEVELOPING STORMS FOR THIS EVENING. SHORT TERM...SATELLITE AND RADAR SHOW STORMS FIRING ALONG COLD FRONT NEAR STL IN WARMEST AND MOST UNSTABLE AIR. TORNADO WATCH TO INCLUDE THESE STORMS. EASTERN ILLINOIS STORMS TO MOVE IN BY 3PM WHILE LINE WEST OF I-55 DUE IN BY OR BEFORE 6PM AND THEN MOVE ACROSS FORECAST AREA THROUGH THE EVENING. AFTER MIDNIGHT AND FROPA SHOWERS TO TAPER OFF THOUGH SOUTHEAST COUNTIES LIKELY TO TAP INTO CONVECTION FORECAST TO BUILD NORTHEAST FROM CURRENT DEVELOPMENT IN WESTERN TENNESSEE. THURSDAY...MUCH COLDER AIR AND CYCLONIC FLOW TO KEEP SKIES MOSTLY CLOUDY AND ISOLATED SHOWERS SHOULD DEVELOP UNDER THESE CONDITIONS. THURSDAY NIGHT SKIES WILL GRADUALLY CLEAR AND ALLOW TEMPS TO DROP INTO MID 30S. WINDS SHOULD STAY UP ENOUGH TO LIMIT FROST BUT BEARS WATCHING FOR LATER FORECASTS. LONG TERM...DRY WEATHER FROM FRIDAY THROUGH REMAINDER OF PERIOD AS TROF LIFTS OUT. FRIDAY NIGHT ALSO POTENTIAL ISSUE FOR FROST AND BEARS WATCHING. BEYOND THAT TEMPS RETURN TO A BIT ABOVE NORMAL. && .AVIATION... && .AVIATION...DISCUSSION FOR THE 18Z TAFS. MAINLY MVFR CONDITIONS ARE EXPECTED THIS TAF PERIOD. SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS OVER CENTRAL INDIANA WERE INHIBITING HEATING AND DEEPER CONVECTION EARLY THIS AFTERNOON. STILL AS THE DEEP TROUGH PROGRESSES EASTWARD WITH FAVORABLE MOISTURE IN PLACE TSRA DEVELOPMENT IS STILL EXPECTED. ONGOING TRENDS SUGGEST MVFR CEILINGS ASSOCIATED WITH SOME THE SHOWERS AND STORMS...BUT TIMING THE DEVELOPMENT WILL PROVE TO BE QUITE DIFFICULT. BEST WINDOWS APPEAR TO BE EARLY THIS AFTERNOON GIVEN OUR LATEST RADAR TRENDS AND AGAIN LATE THIS AFTERNOON AND EARLY EVENING AS STRONGER DYNAMICS BEGIN TO PUSH THROUGH. THUS HAVE TRIED TO FOCUS VCTS AND SHRA MENTIONS AROUND THESE TIMES AND EXPECT TO MAKE MORE ADJUSTMENT AND UPDATES AS SHOWERS AND STORMS THAT DEVELOP PUSH TOWARD THE TAF SITES. AFTER THE COLD FRONTAL PASSAGE TONIGHT...EXPECT GUSTY WINDS TO CONTINUE GIVEN THE CYCLONIC FLOW. SOUNDINGS AND TIME HEIGHTS INDICATE TRAPPED STRATO CU THUS MVFR CIGS WILL BE THE WAY TO GO TO START THURSDAY. UPDATE...ONLY MINOR CHANGES TO THE ONGOING FORECAST THIS MORNING. SATELLITE IMAGES DEPICT CLOUD COVER ACROSS MUCH OF THE REGION AND THIS MAY INHIBIT MAX HEATING THIS AFTERNOON. GIVEN H8 TEMPS NEAR 11C AND A LACK OF WARM AIR ADVECTION HAVE TWEAKED TEMPERATURES DOWN SLIGHTLY. PRECIP TIMING LOOKS OK BUT GIVEN THE SLOWER PROGRESSION TO THE SE PARTS OF THE FORECAST AREA HAVE REMOVED POPS THROUGH 18Z IN THOSE LOCATIONS AS RAIN DOES NOT APPEAR IMMINENT IN THE NEXT FEW HOURS. IF CLOUD COVER HOLDS THIS AFTERNOON...PRECIPITATION WILL MAINLY BE DYNAMICALLY DRIVEN...RATHER THAN BE AIDED BY DAYTIME HEATING. && .IND WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...PUMA LONG TERM....TUCEK AVIATION...PUMA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE INDIANAPOLIS IN 240 PM EDT WED APR 7 2010 INZ021-028>031-035>049-051>057-060>065-067>072-081845- CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY- BOONE-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-VERMILLION-PARKE- PUTNAM-HENDRICKS-MARION-HANCOCK-HENRY-VIGO-CLAY-OWEN-MORGAN- JOHNSON-SHELBY-RUSH-SULLIVAN-GREENE-MONROE-BROWN-BARTHOLOMEW- DECATUR-KNOX-DAVIESS-MARTIN-LAWRENCE-JACKSON-JENNINGS- 240 PM EDT WED APR 7 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS WILL BECOME NUMEROUS THROUGH THIS EVENING AS THEY SPREAD EAST ACROSS CENTRAL INDIANA AHEAD OF A STRONG COLD FRONT. DAMAGING WINDS...LARGE HAIL...BRIEF HEAVY RAIN...AND FREQUENT LIGHTNING ARE ALL THREATS. AN ISOLATED BRIEF TORNADO IS POSSIBLE. DAYS TWO THROUGH SEVEN...THURSDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED THIS AFTERNOON AND EVENING. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) TUCEK
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
439 PM EDT WED APR 7 2010
INZ028-029-035-043-072115-
FOUNTAIN-TIPPECANOE-VERMILLION-WARREN-
439 PM EDT WED APR 7 2010
...STRONG THUNDERSTORM ADVISORY FOR NORTHWESTERN VERMILLION...
NORTHERN FOUNTAIN...WARREN AND WESTERN TIPPECANOE COUNTIES UNTIL 515
PM EDT...
AT 435 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES WEST OF COVINGTON...OR 7 MILES EAST OF
DANVILLE...MOVING NORTHEAST AT 50 MPH.
HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
WILLIAMSPORT...
PENCE...
WEST LEBANON...
TAB...
ATTICA...
RAINSVILLE...
PINE VILLAGE...
SHADELAND...
THIS STORM MAY INTENSIFY....AND A TORNADO WATCH IS IN EFFECT FOR THIS
AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS
LOCAL CABLE TV OUTLETS....FOR ADDITIONAL INFORMATION AND POSSIBLE
WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4041 8754 4049 8744 4049 8710 4037 8690
4003 8743 4012 8754
TIME...MOT...LOC 2039Z 226DEG 43KT 4019 8744
MRD/50PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
514 PM EDT WED APR 07 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0504 PM HAIL LAFAYETTE 40.41N 86.87W
04/07/2010 E0.25 INCH TIPPECANOE IN AMATEUR RADIO
FELL AT INTERSECTION OF STATE ROAD 215 AND 700.
&&
AHOMANNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
516 PM EDT WED APR 07 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0516 PM HAIL LAFAYETTE 40.41N 86.87W
04/07/2010 E0.50 INCH TIPPECANOE IN AMATEUR RADIO
ADAMS AND 18TH ST.
&&
DTUCEKPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
523 PM EDT WED APR 07 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0518 PM HAIL LAFAYETTE 40.41N 86.87W
04/07/2010 E0.25 INCH TIPPECANOE IN AMATEUR RADIO
NE OF I-65 IN NORTHEASTERN LAFAYETTE.
&&
AHOMANNThe Indianapolis radar (KIND), 87 km away, was scanning. The volume nearest the first event began at 22:50 UTC.
3 hail. Local standard time, as filed.
This event occurred at the intersection of Dixon Road and Defenbaugh Street in southwest Kokomo.
This event occurred at the intersection of State Road 246 and State Road 63.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2010Every state in 2010This day in weather historyWarnings in Indiana, 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: 228403, 228404, 228405.