Scattered thunderstorms developed across the Ohio Valley ahead of a cold front, stemming from an upper level system churning over the upper Midwest. These storms pushed northeast into central Indiana during the afternoon and early evening of the 21st of June.
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.
Scattered thunderstorms developed across the Ohio Valley ahead of a cold front, stemming from an upper level system churning over the upper Midwest. These storms pushed northeast into central Indiana during the afternoon and early evening of the 21st of June. Some of these storms produced thunderstorm wind damage, one with an injury and a fatality near West Lafayette.
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 Jun 21, 12:00 PM EST, 2 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 100 PM EDT TUE JUN 21 2011 .UPDATE... THE AVIATION SECTION HAS BEEN UPDATED BELOW && .SYNOPSIS... A COLD FRONT WILL MOVE THROUGH THE AREA ON WEDNESDAY AS AN UPPER LOW MOVES SLOWLY THROUGH THE GREAT LAKES. THIS WILL KEEP CHANCES FOR RAIN AROUND THROUGH THURSDAY. ANOTHER FRONT WILL MOVE IN ON SATURDAY...BRINGING ANOTHER CHANCE FOR RAIN. && .NEAR TERM /THIS AFTERNOON/...LARGE OUTFLOW OVER EASTERN ILLINOIS AND WESTERN KENTUCKY CONTINUES TO PUSH EAST...GETTING READY TO ENTER CENTRAL INDIANA THIS AFTERNOON. 12Z ILX SOUNDING SHOWS 700MN TEMPS BELOW 10C...BUT A SLIGHT INVERSION ABOVE THAT LEVEL. CONVECTIVE TEMPERATURES IN THE MIDDLE AND UPPER 80S ACROSS CENTRAL INDIANA ARE EXPECTED TO BE REACHED IN THE NEXT 2-3 HOURS...AND AS THIS BUOYANT AIR INTERACTS WITH THE BOUNDARY...THUNDERSTORMS ARE EXPECTED TO DEVELOP. RAPID REFRESH AND NAM BOTH SUGGEST CONVECTION DEVELOPING ACROSS THE FORECAST AREA THIS AFTERNOON. HAVE RAISED POPS THIS AFTERNOON AFTER 18Z...AND CUT POPS PRIOR TO 18Z AND PRECIP IS NOT EXPECTED TO DEVELOP UNTIL THEN. GIVEN THE FULL SUN AND WARM AIR IN PLACE OVER CENTRAL INDIANA HAVE RAISED HIGH TEMPERATURES BY 2-3 DEGREES...ALBEIT TEMPERATURES MAY ONLY REACH THOSE HIGHS BRIEFLY AS CONVECTION COOLS THINGS OFF. && .SHORT TERM /TONIGHT THROUGH FRIDAY/... FOCUS CONTINUES TO BE ON CHANCES FOR RAIN. WILL CONTINUE TO USE GFS/12Z ECMWF FOR REASONS NOTED ABOVE. WITH UPPER ENERGY MOVING THROUGH THE AREA TONIGHT AND INSTABILITY AROUND...FEEL LIKELY POPS ARE STILL WARRANTED. RAIN COOLED AIR WILL BRING TEMPERATURES DOWN TO A BLEND OF GUIDANCE NUMBERS. THE COLD FRONT WILL MOVE THROUGH THE AREA ON WEDNESDAY. BETTER INSTABILITY WILL BE ACROSS THE EASTERN FORECAST AREA...SO CONTINUED LIKELY POPS THERE AND CHANCE ELSEWHERE. MAV TEMPERATURES LOOK REASONABLE MOST AREAS...BUT LOOK A BIT TOO WARM ACROSS THE SOUTH GIVEN EXPECTED SKY COVER AND PRECIPITATION. AS THE UPPER LOW MOVES TO THE NORTH WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...CHANCES FOR RAIN WILL CONTINUE ACROSS THE AREA. GIVEN THE LIMITED STRENGTH OF THE FORCING WITH THE LOW ACROSS THE LAKES...WENT CHANCE POPS ALL AREAS...WITH HIGHEST POPS ACROSS THE NORTHERN FORECAST AREA CLOSER TO THE LOW. INSTABILITY DIMINISHES THROUGH THE PERIOD SO HAVE MAINLY SHOWERS THROUGH THE PERIOD. FORCING AND MOISTURE LOOK TO BE LIMITED ENOUGH TO GO DRY ON FRIDAY AS THE LOW BEGINS ITS EXIT. && .LONG TERM /FRIDAY NIGHT THROUGH MONDAY/... FOR THE MOST PART STUCK CLOSE TO HPC GUIDANCE WITH SOME ADJUSTMENTS TO POPS BASED ON THE ENSEMBLES. BROUGHT CHANCES OF RAIN BACK IN FOR SATURDAY AND SATURDAY NIGHT AS A FRONT COULD STRETCH EAST INTO THE AREA FROM THE PLAINS. && .AVIATION.../DISCUSSION FOR THE 211800Z/... VFR CONDITIONS EXPECTED EARLY THIS AFTERNOON...DETERIORATING TO MVFR OR IFR WITH ANY TSRA PASSAGE THIS EVENING. PATCHY MVFR FOG POSSIBLE TONIGHT WITH A RETURN TO VFR AFTER DAYTIME MIXING BEGINS ON WEDNESDAY. CONVECTION IS BEGINNING ACROSS CENTRAL INDIANA AS THE WARM HUMID AIR MASS REACHES CONVECTIVE TEMPERATURES AND INTERACTS WITH THE OUTFLOW CROSSING THE STATE. TSRA ARE EXPECTED TO INCREASE IN COVERAGE THIS AFTERNOON AND GFS/NAM SUGGEST S/W INTERACTION WITH THE WARM AIR MASS. TIME SECTIONS SHOW DEEPLY SATURATED COLUMN AND GOOD LIFT AVAILABLE THROUGH THE EVENING HOURS PUSHING THROUGH CENTRAL INDIANA. FOR NOW WILL HOLD OFF ON THUNDER MENTION AND UPDATE THAT WHEN STORMS ARE IMMINENT. AGAIN MVFR TO IFR CONDITIONS ARE EXPECTED WITH ANY THUNDERSTORM THAT STRIKES A TAF SITE. COLUMN DRIES OUT CONSIDERABLY IN THE WAKE OF THE CONVECTION OVERNIGHT AND WITH LINGERING MOISTURE FROM EXPECTED PRECIPITATION HAVE INCLUDED MVFR FOG...PARTICULARLY AT THE TYPICAL RURAL TROUBLE SPOTS. WARM MIXING BEGINS ON WEDNESDAY MORNING AND WILL MIX OUT ANY FOG AND COMMENCE WARM SOUTHERLY FLOW AND CU BUILD UPS AGAIN. && .IND WATCHES/WARNINGS/ADVISORIES... NONE. && SYNOPSIS...50 NEAR TERM...PUMA SHORT TERM...50 LONG TERM....CP/50 AVIATION...JP
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE INDIANAPOLIS IN 408 AM EDT TUE JUN 21 2011 INZ021-028>031-035>049-051>057-060>065-067>072-220900- 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- 408 AM EDT TUE JUN 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TODAY AND TONIGHT. THUNDERSTORMS ARE POSSIBLE TODAY AND ARE LIKELY TONIGHT. SOME OF THE STORMS MAY BE SEVERE...WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY THREATS. AN ISOLATED TORNADO IS ALSO POSSIBLE. ANY STORM WILL BE CAPABLE OF PRODUCING HEAVY RAIN AND FREQUENT LIGHTNING. THE BEST CHANCES FOR SEVERE STORMS WILL BE THIS AFTERNOON AND EVENING. AREAL FLOODING FROM THE STORMS ON MONDAY WILL CONTINUE AT SOME LOCATIONS TODAY. FLOODING WILL ALSO OCCUR ALONG SOME AREA RIVERS. SEE THE LATEST HYDROLOGIC STATEMENT FOR DETAILS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY. SOME STORMS MAY BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY THREATS. ISOLATED STORMS ARE POSSIBLE ACROSS PARTS OF THE AREA WEDNESDAY NIGHT AND THURSDAY. THESE STORMS ARE NOT EXPECTED TO BE SEVERE. ADDITIONAL THUNDERSTORMS ARE POSSIBLE SATURDAY. FLOODING WILL CONTINUE ALONG SOME AREA RIVERS. SEE THE LATEST HYDROLOGIC STATEMENT FOR DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING AS WELL AS ON WEDNESDAY. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE)
The Louisville radar (KLVX), 92 km away, was scanning. The volume nearest the first event began at 16:59 UTC.
5 thunderstorm wind. Local standard time, as filed.
A tree was snapped at the base and fell on a power line pole, breaking it in half. This was due to damaging thunderstorm wind gusts.
A large tree was down and blocking State Road 31 near County Road 900 South due to damaging thunderstorm wind gusts.
A few branches were downed in this location due to thunderstorm wind gusts.
Thunderstorm wind gusts downed a 12 to 18 diameter tree fell on a vehicle traveling southbound on State Route 43, just north of West Lafayette. Two individuals were in the vehicle, with one fatality and one injury. Winds were estimated at 45 to 50 mph.
Power poles were snapped at Yeager and Northwestern Roads due to damaging thunderstorm wind gusts.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Thunderstorm Wind, Tippecanoe | 2011-06-21 | 59 | Male | Vehicle/Towed Trailer | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2011Every state in 2011This day in weather historyWarnings in Indiana, June 2011
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: 329194, 328532, 329196, 329204, 329213.