A nearly stationary front across central Indiana provided the focus for severe weather during the afternoon of April 10th. Severe storms brought large hail to mainly the northern half of central Indiana, with hail reports as large as 2 inches in diameter.
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 nearly stationary front across central Indiana provided the focus for severe weather during the afternoon of April 10th. Severe storms brought large hail to mainly the northern half of central Indiana, with hail reports as large as 2 inches in diameter. The storms also brought heavy rain to the area, which caused some localized flooding problems. Later during the night, a line of thunderstorms associated with a potent cold front moved through, bringing gusty winds and more heavy rain. Rainfall totals over 3 inches were recorded in some locations across the northern section of central Indiana.
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 10, 11:55 AM EST, 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 1255 PM EDT WED APR 10 2013 .UPDATE... THE AVIATION SECTION HAS BEEN UPDATED BELOW. && .SYNOPSIS... ISSUED AT 341 AM EDT WED APR 10 2013 A STRONG LOW PRESSURE SYSTEM WILL PUSH THROUGH CENTRAL INDIANA TONIGHT AND TOMORROW...TRIGGERING STRONG TO SEVERE THUNDERSTORMS ALONG AND AHEAD OF AN ASSOCIATED COLD FRONT. CONVECTIVE ACTIVITY WILL TAPER OFF BY TOMORROW EVENING WITH ONLY SOME LINGERING SHOWERS INTO FRIDAY MORNING. DRY AND COOL WEATHER WILL BE THE NORM FOR FRIDAY AND SATURDAY IN THE WAKE OF AFOREMENTIONED COLD FRONT. HOWEVER...ANOTHER CHANCE FOR SHOWERS AND THUNDERSTORMS WILL COME LATE IN THE WEEKEND AS ANOTHER SYSTEM MOVES THROUGH THE GREAT LAKES REGION. && .NEAR TERM /REST OF TODAY/... ISSUED AT 1011 AM EDT WED APR 10 2013 AT 10 AM RADAR MOSAIC SHOWED ALMOST NO ECHOES ACROSS THE FORECAST AREA. WARM/STATIONARY FRONT IS JUST NORTH OF THE FORECAST AREA BETWEEN RENSSELAER AND LAFAYETTE. TEMPERATURES WERE IN THE LOW 70S WITH DEW POINTS IN THE LOW 60S AND WINDS OUT OF THE SOUTHWEST AROUND 25 MPH. BASED ON TRENDS AND HRRR/RAP OUTPUT DECREASED POPS FOR THE NEXT COUPLE OF HOURS. THEN INCREASED POPS SOME FOR THE AFTERNOON WITH RAPID UPDATE MODELS SHOWING CONVECTIVE DEVELOPMENT ACROSS THE AREA BY LATE THIS AFTERNOON. ALTHOUGH LARGER SCALE FRONTAL FORCING WILL STILL BE ABSENT...WATER VAPOR SATELLITE AND SURFACE ANALYSIS INDICATE A WEAK WAVE CURRENTLY OVER EASTERN MISSOURI/WESTERN ILLINOIS THAT SHOULD MOVE ALONG THE FRONT AND PROVIDE THE NECESSARY FORCING THIS AFTERNOON/EVENING TO TAP INTO WHAT SHOULD BE AMPLE INSTABILITY WITH OVER 60 DEW POINTS AND HIGH TEMPERATURES REACHING INTO THE UPPER 70S/LOW 80S ON STRONG SOUTHWESTERLY FLOW. ALSO SEEING SOME CLEARING ON SATELLITE TO THE SOUTHWEST...SO THINK THOSE 80S COULD STILL BE ATTAINABLE DESPITE CURRENT CLOUD COVER. GIVEN THE INSTABILITY AND FORCING MENTIONED ABOVE...DO SEE SOME POTENTIAL FOR SEVERE THIS AFTERNOON INTO EVENING AND HAVE ADDED THIS TO THE HWO. WHILE INSTABILITY WILL BE LOWER TONIGHT STILL SEE STRONGER FORCING AND DYNAMICS PRESENT WITH FRONTAL PASSAGE LATE TONIGHT/EARLY THURSDAY SO SEVERE WILL BE IN PLAY THEN AS WELL. && .SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/... ISSUED AT 341 AM EDT WED APR 10 2013 THE MAIN FOCUS OF THE SHORT TERM PERIOD IS SEVERE WEATHER POTENTIAL FOR TONIGHT AND TOMORROW. SPC CONTINUES TO KEEP ALL OF CENTRAL INDIANA UNDER A SLIGHT RISK FOR SEVERE WEATHER THROUGH DAY 1. CURRENT THINKING IS THAT COLD FRONT WILL START IMPACTING THE WESTERN PORTIONS OF CENTRAL INDIANA AFTER THU 06Z TONIGHT AND KEEP PROPAGATING EAST THROUGH EARLY TOMORROW MORNING. THIS WOULD PUT THE BULK OF THUNDERSTORMS THROUGH THE INDY METRO SOMEWHERE IN THE THU 09-15Z TIME FRAME. FORECAST SOUNDINGS ARE HINTING AT SBCAPES OF 1000 TO 1500 J/KG WITH AMPLE MOISTURE AND HEAT IN PLACE. A STRONG LOW LEVEL JET OVER 60 KTS SHOULD ACCELERATE SEVERE THUNDERSTORM DEVELOPMENT AFTER THU 06. AN UPPER LEVEL JET WILL ACCOMPANY THE UPPER LEVEL LOW TOMORROW AFTERNOON...BUT EXPECTING ENVIRONMENT TO BE WORKED OVER BY THAT POINT. NONETHELESS...WILL KEEP MENTION OF ISOLATED THUNDERSTORMS OVER THE FORECAST AREA UNTIL THAT UPPER LOW HAS EXITED THE REGION. TEMPS...WAS ABLE TO GO WITH ALLBLEND IN WAKE OF THE SYSTEM AS MODELS COME INTO AGREEMENT WITH THE WEATHER PATTERN. MUCH COOLER TEMPS IN THE 40S AND 50S CAN BE EXPECTED FOR FRIDAY WITH DRY CONDITIONS. && .LONG TERM /SATURDAY THROUGH TUESDAY/... ISSUED AT 341 AM EDT WED APR 10 2013 SATURDAY AND SATURDAY NIGHT WILL BE DRY AS HIGH PRESSURE WILL BE MOVING EAST ACROSS THE OHIO VALLEY. AFTER THAT THERE IS DISAGREEMENT BETWEEN MODELS ON HOW QUICK RAIN MOVES BACK IN. THE GFS BRINGS RAIN BACK IN SUNDAY AS A WARM FRONT DEVELOPS ACROSS OUR REGION WITH LOW PRESSURE OVER THE CENTRAL PLAINS. THE GEMNH AND 12Z EURO MODELS ARE ALMOST 24 HOURS SLOWER AND THEY DO NOT INDICATE SUCH A STRONG FRONTAL SYSTEM SETTING UP ACROSS OUR REGION. WITH THE GFS BEING A WET OUTLIER...WILL DOWN PLAY RAIN CHANCES SOME SUNDAY AND SUNDAY NIGHT. WILL MENTION SLIGHT CHANCES ACROSS OUR NORTHWEST SUNDAY AFTERNOON AND LOW CHANCES NORTHWEST 2/3 OF OUR REGION SUNDAY NIGHT...BUT LOWER POPS THAN CONSALL AND ALL BLEND NUMBERS. FROM MONDAY ON WILL GO WITH CHANCES POPS...THE GEMNH BRINGS A FRONT TO OUR REGION AND THE 12Z EURO HAS IT JUST TO OUR NORTHWEST. AS FAR AS TEMPERATURES ARE CONCERNED...RAISED ALL BLEND TEMPERATURES SOME SUNDAY AS THE GFS INDICATES MUCH COOLER TEMPERATURES WITH CLOUDS AND PRECIP...WHICH MAY SOMEWHAT SKEW ALL BLEND NUMBERS. ALSO TWEAKED TEMPERATURES UP A LITTLE SATURDAY TO BETTER MATCH MEX AND HPC NUMBERS. ALL BLEND TEMPERATURES SEEM REASONABLE REST OF THE EXTENDED. && .AVIATION /DISCUSSION FOR 101800Z TAF ISSUANCE/... ISSUED AT 1255 PM EDT WED APR 10 2013 POTENTIAL FOR MVFR/IFR CONDITIONS WITHIN CONVECTION THIS AFTERNOON AND EARLY EVENING. MORE WIDESPREAD MVFR/IFR CONDITIONS WILL DEVELOP WITHIN THUNDERSTORMS EARLY THURSDAY MORNING. WARM FRONT REMAINS ACROSS THE EXTREME NORTHERN PART OF THE FORECAST AREA EARLY THIS AFTERNOON...CREATING A COMPLEX FORECAST OVER THE NEXT SEVERAL HOURS AS DISTURBANCES ALOFT RIPPLE ALONG THE BOUNDARY. CONVECTION INCREASING CURRENTLY IN ADVANCE OF A WAVE ALOFT MOVING THROUGH CENTRAL ILLINOIS. WITH THE ATMOSPHERE BECOMING INCREASINGLY MOIST AND UNSTABLE...ANTICIPATE CONVECTION TO INCREASE IN COVERAGE THROUGH THE AFTERNOON WITH THE POTENTIAL TO PRODUCE LOCALLY IFR CONDITIONS WITHIN HEAVIER STORMS AS THEY IMPACT THE TERMINALS. WINDS WILL REMAIN FROM THE SOUTHWEST AND GUST AT 25-30KTS AT KBMG/KHUF/KIND INTO THE EARLY EVENING. WIND FORECAST MUCH MORE PROBLEMATIC AT KLAF AS BOUNDARY HAS SLIPPED JUST SOUTH OF THE TERMINAL. WHILE WINDS HAVE SHIFTED TO THE NORTH...LIKELY TO SEE VARIABLE DIRECTION ON THE WINDS AT TIMES OVER THE NEXT FEW HOURS WITH THE BOUNDARY REMAINING IN THE VICINITY OF THE TERMINAL. WIND DIRECTION WILL TRANSITION TO S/SE AT ALL TERMINALS BY THIS EVENING WITH THE MAIN LOW PRESSURE WAVE MOVING INTO THE MID MISSISSIPPI VALLEY. THE TRACK OF THIS SYSTEM IS LIKELY TO PUSH THE WARM FRONT BACK TO THE NORTH OF KLAF...AND IS LIKELY TO SHIFT MORE WIDESPREAD CONVECTION NORTH OF THE TERMINALS AS WELL. WILL MAINTAIN A VCTS MENTION AT ALL SITES THROUGH MUCH OF THE NIGHT HOWEVER AS A STEADILY INTENSIFYING LOW LEVEL JET MAINTAINS A WARM MOIST AIRMASS OVER THE REGION. THE LOW WILL TRACK INTO NORTHWEST INDIANA BY DAYBREAK THURSDAY WITH A STRONG COLD FRONT MOVING ACROSS THE FORECAST AREA DURING THE FIRST HALF OF THE DAY. THIS WILL BRING A RENEWED PERIOD WITH WIDESPREAD AND OCCASIONALLY HEAVY CONVECTION THROUGH MIDDAY ALONG WITH IFR CONDITIONS. WINDS WILL BEGIN TO VEER TO THE SOUTHWEST TOWARDS THE END OF THE FORECAST PERIOD AS THE FRONT PASSES THE TERMINALS. && .IND WATCHES/WARNINGS/ADVISORIES...NONE. && SYNOPSIS...TDUD NEAR TERM...CP SHORT TERM...TDUD LONG TERM....JH AVIATION...RYAN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE INDIANAPOLIS IN 951 AM EDT WED APR 10 2013 INZ021-028>031-035>049-051>057-060>065-067>072-111000- 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- 951 AM EDT WED APR 10 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TODAY AND TONIGHT. OUTLOOK: STRONG TO SEVERE THUNDERSTORMS. HAZARDS: DAMAGING WINDS...LARGE HAIL...FREQUENT LIGHTNING...BRIEF HEAVY RAINFALL...AND ISOLATED TORNADOES. TIMING: THIS AFTERNOON AND EVENING...AND AGAIN LATE TONIGHT. DISCUSSION: SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE FORECAST AREA THIS AFTERNOON AS A BOUNDARY REMAINS STALLED OVER NORTHERN INDIANA. THUNDERSTORMS MAY BE SEVERE THIS AFTERNOON AND EARLY THIS EVENING. ADDITIONAL SEVERE THUNDERSTORMS MAY IMPACT THE REGION LATE TONIGHT AHEAD OF A STRONG COLD FRONT AND LOW PRESSURE SYSTEM MOVING INTO CENTRAL INDIANA. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. OUTLOOK: SEVERE THUNDERSTORMS ARE POSSIBLE INTO THURSDAY MORNING /MAINLY ACROSS THE EASTERN PORTIONS OF CENTRAL INDIANA./ TOTAL RAINFALL AMOUNTS OF OF 1 TO 2 INCHES ARE POSSIBLE BY THURSDAY AFTERNOON...WHICH COULD CAUSE SIGNIFICANT RISES ON CREEKS AND STREAMS. ADDITIONAL THUNDERSTORMS ARE POSSIBLE NEXT MONDAY AND TUESDAY. DISCUSSION: A STRONG COLD FRONT WILL CONTINUE TO MOVE THROUGH THE AREA ON THURSDAY MORNING BRINGING THE POTENTIAL FOR SEVERE STORMS AND HEAVY RAIN. ANOTHER SYSTEM WILL BRING A CHANCE FOR STORMS NEXT MONDAY AND TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE LATE TONIGHT AND EARLY TOMORROW MORNING. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) RYAN
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
835 AM EDT WED APR 10 2013
INZ031-101300-
HOWARD-
835 AM EDT WED APR 10 2013
...STRONG THUNDERSTORM ADVISORY FOR HOWARD COUNTY UNTIL 900 AM EDT...
AT 833 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS 7 MILES WEST OF KOKOMO...MOVING NORTHEAST AT 40
MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN.
LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
KOKOMO...
INDIAN HEIGHTS...
GREENTOWN...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.
&&
LAT...LON 4057 8586 4051 8586 4040 8620 4040 8624
4039 8624 4038 8628 4039 8628 4039 8631
4043 8631 4044 8636 4047 8638 4054 8637
4057 8631
TIME...MOT...LOC 1235Z 245DEG 36KT 4049 8624
RYANSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1230 PM EDT WED APR 10 2013
INZ021-029-030-036-101700-
CARROLL-CLINTON-MONTGOMERY-TIPPECANOE-
1230 PM EDT WED APR 10 2013
...STRONG THUNDERSTORM ADVISORY FOR CLINTON...SOUTHEASTERN CARROLL...
NORTHEASTERN MONTGOMERY AND SOUTHEASTERN TIPPECANOE COUNTIES UNTIL
100 PM EDT...
AT 1227 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 9 MILES NORTH OF CRAWFORDSVILLE...MOVING
NORTHEAST AT 50 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
FRANKFORT...
CLARKS HILL...
COLFAX...
DAYTON...
MULBERRY...
ROSSVILLE...
MICHIGANTOWN...
BURLINGTON...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
&&
LAT...LON 4053 8637 4044 8638 4043 8632 4041 8631
4039 8631 4039 8630 4029 8624 4018 8654
4018 8669 4012 8669 4005 8686 4027 8702
4056 8639
TIME...MOT...LOC 1630Z 239DEG 43KT 4019 8680
CPSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1242 PM EDT WED APR 10 2013
INZ021-029-101715-
CARROLL-TIPPECANOE-
1242 PM EDT WED APR 10 2013
...STRONG THUNDERSTORM ADVISORY FOR CARROLL AND NORTHEASTERN
TIPPECANOE COUNTIES UNTIL 115 PM EDT...
AT 1240 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 5 MILES NORTHEAST OF LAFAYETTE...MOVING
NORTHEAST AT 45 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
DELPHI...
FLORA...
CAMDEN...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
&&
LAT...LON 4069 8637 4055 8637 4043 8666 4043 8669
4041 8670 4035 8684 4052 8695 4057 8681
4057 8678 4058 8678 4070 8648
TIME...MOT...LOC 1642Z 244DEG 38KT 4047 8678
CPSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
101 PM EDT WED APR 10 2013
INZ021-030-031-038-101730-
CARROLL-CLINTON-HOWARD-TIPTON-
101 PM EDT WED APR 10 2013
...STRONG THUNDERSTORM ADVISORY FOR NORTHEASTERN CLINTON...
SOUTHEASTERN CARROLL...HOWARD AND NORTHWESTERN TIPTON COUNTIES UNTIL
130 PM EDT...
AT 1259 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 11 MILES NORTHEAST OF FRANKFORT...MOVING
NORTHEAST AT 55 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
KOKOMO...
RUSSIAVILLE...
INDIAN HEIGHTS...
SHARPSVILLE...
GREENTOWN...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
&&
LAT...LON 4044 8586 4029 8642 4045 8661 4056 8635
4057 8586
TIME...MOT...LOC 1702Z 243DEG 46KT 4042 8634
CPThe Indianapolis radar (KIND), 87 km away, was scanning. The volume nearest the first event began at 17:22 UTC.
39 hail, 3 flood, 1 thunderstorm wind. Local standard time, as filed.
Pea to dime-sized hail was reported at the intersection of US Highways 31 and 35. A few construction barrels were blown over as well.
Quarter-sized hail was observed near the intersection of 96th and Meridian Streets.
Quarter-sized hail fell on East 96th Street, on the northeast side of Indianapolis.
Some holes were ripped in window screens due to the hail.
Water was reported over the road near State Road 39 and County Road 700 South due to heavy thunderstorm rainfall. This occurred near Wildcat Creek.
High water was reported in northwest Clinton County, along County Road 700 North near Rossville, due to thunderstorm heavy rainfall.
Trees were reported down near County Road 1000 East due to damaging thunderstorm wind gusts.
Their werer numerous reports of heavy street flooding and power outages in this location due to thunderstorm heavy rainfall.
A 45 mph thunderstorm wind gust was also observed.
Dime to quarter-sized hail lasted about five minutes.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2013Every state in 2013This day in weather historyWarnings in Indiana, April 2013
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: 433691, 433692, 433693, 433694, 433697, 433630, 433702, 433703, 433704, 433706, 433709, 433711, 433712, 433643, 433654, 433713, 433714, 433715, 433716, 433717, 433668, 433718, 433719, 433720, 433840, 433847, 433721, 433878, 433722, 433723, 433724, 433725, 433726, 433727, 433823, 433876, 433728, 433729, 433730, 433731, and more.