A very warm and humid air mass combined with a slowly-approaching west-to-east cold front to initiate scattered evening thunderstorms. Severe weather occurred in the most favorable environment, to the southeast of Indianapolis, wherein 3000-4000 MLCAPE, 125-175 0-3 km MLCAPE, and 100-200 effective storm relative helicity combined to form an intense, nearly-stationary QLCS.
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 very warm and humid air mass combined with a slowly-approaching west-to-east cold front to initiate scattered evening thunderstorms. Severe weather occurred in the most favorable environment, to the southeast of Indianapolis, wherein 3000-4000 MLCAPE, 125-175 0-3 km MLCAPE, and 100-200 effective storm relative helicity combined to form an intense, nearly-stationary QLCS. Two EF-1 tornadoes, spawned from the QLCS, occurred within a small area where 50-100 0-1 km storm relative helicity overlapped with 100 mb LCL values under 750 meters. The event's maximum precipitable water axis of 2.0-2.1 inches, west to east across southern Indiana, coincided with the 2-7 inch rainfall reports under the QLCS.
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 Jul 29, 6:08 PM EST, 46 minutes earlier.
Area Forecast Discussion National Weather Service Indianapolis IN 708 PM EDT Thu Jul 29 2021 ...Updated Aviation Discussion... .Short Term...(This evening through Friday night) Issued at 300 PM EDT Thu Jul 29 2021 Residual cloud debris from convective activity over Illinois has been infiltrating central Indiana for most of the day, inhibiting the severe threat. Nonetheless, a few showers and thunderstorms have managed to break through over the northwest counties with the cold front right on the edge of the forecast warning area. They are struggling to maintain any intensity though as they drift southward with MLCAPE values only around 1000 J/kg. There is plenty of SBCAPE though near 4000 J/kg with temperatures in the mid to upper 80s and dew points in the mid to upper 70s. Meanwhile, effective bulk shear is around 30 kts with that cold front quickly approaching the area. So, any breaks in the cloud cover, and convective development will be fast. At this point though, confidence is low and the best chances will likely be over the southern counties this evening with any last minute clearing and frontal passage. And, CAMs seem to support this trend with a quick downward trend from north to south during the Fri 00-03Z time and all of the forecast area dry by Friday morning. After the frontal passage tonight, the hot, humid airmass will finally break, and it will feel much different tomorrow. Daytime highs are projected to only top off in the upper 70s to mid 80s with comfortable dew points in the upper 50s/low 60s as high pressure strengthens over the area. && .Long Term...(Saturday through Thursday) Issued at 300 PM EDT Thu Jul 29 2021 On Saturday, an impulse in the northwest flow aloft will move into southern Illinois. This will bring some forcing, mainly to the southwest forecast area. Moisture will not be that impressive with deeper moisture to the south of the area. Will have some chance PoPs mainly southwest. On Sunday, a cold front will move through the area, bringing in another shot of cooler air. Another upper wave will accompany the front, but the best forcing will be northeast of central Indiana. However, the issue will once again be available moisture, with winds mainly having a west or north component to them. Will only go with some slight chance PoPs. The remainder of the long term will see central Indiana underneath an upper trough. However, at the surface, high pressure will be in control. At the moment, with the surface high and plenty of dry air in the lower levels, will just go dry through the remainder of the long term period. Thanks to the upper trough and a flow of cooler air, temperatures will be cooler than normal through the period. && .Aviation...(00Z TAF Issuance) Issued at 708 PM EDT Thu Jul 29 2021 IMPACTS: - Convection still possible at KIND through around 1-2z, possible at KBMG through around 2-3z. KLAF/KHUF should be about finished with lightning potential. - Quick visibility deterioration to MVFR in any heavy showers/storms that do form. - Winds from northwest this evening, possibly becoming more northerly overnight. DISCUSSION: Scattered storms moving southeast through central Indiana are mainly along/south of I-70 at this point. There are still a few showers north of that line, but not seeing lightning in those. Could still see impacts at KIND/KBMG, but may just be in the vicinity and not directly overhead. Overnight drier air will move in from the north and this should prevent fog formation. && .IND WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 8 PM EDT this evening for INZ051>053-060>063- 067>071. && Short Term...TDUD Long Term...50 Aviation...CP
Hazardous Weather Outlook National Weather Service Indianapolis IN 336 PM EDT Thu Jul 29 2021 INZ021-028>031-035>049-051>057-060>065-067>072-301945- 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- Including the cities of Delphi, Flora, Williamsport, West Lebanon, Lafayette, West Lafayette, Frankfort, Kokomo, Attica, Covington, Veedersburg, Crawfordsville, Lebanon, Zionsville, Tipton, Fishers, Carmel, Noblesville, Anderson, Muncie, Winchester, Clinton, Newport, Rockville, Greencastle, Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, New Castle, Terre Haute, Brazil, Clay City, Spencer, Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, Rushville, Sullivan, Linton, Bloomfield, Bloomington, Nashville, Columbus, Greensburg, Vincennes, Washington, Loogootee, Shoals, Bedford, Mitchell, Seymour, Brownstown, and North Vernon 336 PM EDT Thu Jul 29 2021 This hazardous weather outlook is for central Indiana. .DAY ONE...This Afternoon and Tonight. Strong and severe thunderstorms are possible through this evening. Damaging winds will be the main severe concern, but large hail is possible and an isolated tornado can not be ruled out. Cloud to ground lightning, brief heavy rain and localized flooding are also possible. The combination of temperatures in the lower and middle 90s and dew points in the middle and upper 70s will result in the heat index reaching 100 to 105 degrees at times over the Wabash Valley through this evening. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a small chance of thunderstorms over southwestern sections Saturday afternoon and evening. Severe weather is not expected. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible through this evening. && More information, along with other weather, hydrological and climate information can be found at http://weather.gov/ind
Special Weather Statement
National Weather Service Indianapolis IN
419 PM EDT Thu Jul 29 2021
INZ030-038-292045-
Clinton-Tipton-
419 PM EDT Thu Jul 29 2021
...A STRONG THUNDERSTORM WILL AFFECT CLINTON AND WESTERN TIPTON
COUNTIES...
At 415 PM EDT, a strong thunderstorm was located over Frankfort,
moving east at 35 mph.
Winds in excess of 30 mph and half inch hail are possible with this
storm.
Locations impacted include...
Frankfort, Kirklin, Michigantown and Kempton.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 4040 8631 4039 8631 4039 8628 4037 8628
4037 8624 4039 8624 4038 8611 4022 8616
4022 8624 4018 8624 4018 8632 4029 8662
4042 8653
TIME...MOT...LOC 2015Z 289DEG 28KT 4032 8649
TDUDSpecial Weather Statement
National Weather Service Indianapolis IN
501 PM EDT Thu Jul 29 2021
INZ040-048-049-292145-
Henry-Madison-Hancock-
501 PM EDT Thu Jul 29 2021
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN MADISON...NORTHEASTERN
HANCOCK AND WESTERN HENRY COUNTIES...
At 500 PM EDT, a strong thunderstorm was located 8 miles southwest of
Anderson, moving east at 35 mph.
Winds in excess of 30 mph and half inch hail are possible with this
storm.
Locations impacted include...
Anderson, New Castle, Pendleton, Fortville, Ingalls, Spiceland,
Shirley, Markleville, Kennard, Wilkinson, Sulphur Springs, Mount
Summit, Cadiz, Springport and Greensboro.
This includes the following highways...
Interstate 69 between mile markers 215 and 229.
Interstate 70 between mile markers 116 and 124.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 3980 8541 3992 8588 3993 8588 3993 8586
3995 8586 4006 8581 4007 8529
TIME...MOT...LOC 2100Z 282DEG 29KT 3999 8576
TDUDSpecial Weather Statement National Weather Service Indianapolis IN 601 PM EDT Thu Jul 29 2021 INZ057-292230- Rush- 601 PM EDT Thu Jul 29 2021 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN RUSH COUNTY... At 600 PM EDT, a strong thunderstorm was located near Rushville, or 12 miles west of Connersville, moving southeast at 30 mph. Wind gusts up to 50 mph and half inch hail are possible with this storm. Locations impacted include... Rushville, Glenwood and Mays. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. LAT...LON 3970 8556 3978 8544 3978 8530 3950 8530 TIME...MOT...LOC 2200Z 316DEG 27KT 3965 8538 TDUD
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
726 PM EDT THU JUL 29 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0659 PM HEAVY RAIN 1 NE RUSHVILLE 39.62N 85.44W
07/29/2021 M1.14 INCH RUSH IN COCORAHS
RAIN AMOUNT IN ABOUT 1 HOUR TIME.
APPROXIMATE LOCATION.
&&
BHSpecial Weather Statement
National Weather Service Indianapolis IN
743 PM EDT Thu Jul 29 2021
INZ056-057-065-300015-
Rush-Decatur-Shelby-
743 PM EDT Thu Jul 29 2021
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SHELBY...
SOUTHWESTERN RUSH AND NORTHWESTERN DECATUR COUNTIES...
At 743 PM EDT, a strong thunderstorm was located near Shelbyville,
moving southeast at 25 mph.
Winds in excess of 40 mph and half inch hail are possible with this
storm.
Locations impacted include...
Shelbyville, Greensburg, Adams, Milford, Geneva, Morristown, St.
Paul, Fairland, Milroy, Burney, Waldron, Moscow, Manilla and
Sandusky.
This includes Interstate 74 between mile markers 109 and 133.
If outdoors, consider seeking shelter inside a building.
LAT...LON 3927 8562 3934 8569 3935 8568 3935 8569
3956 8589 3968 8572 3946 8536
TIME...MOT...LOC 2343Z 316DEG 22KT 3956 8574
CPSpecial Weather Statement
National Weather Service Indianapolis IN
752 PM EDT Thu Jul 29 2021
INZ057-065-300015-
Rush-Decatur-
752 PM EDT Thu Jul 29 2021
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN RUSH AND
NORTHEASTERN DECATUR COUNTIES...
At 751 PM EDT, a strong thunderstorm was located near Lake Santee, or
13 miles northwest of Batesville, moving southeast at 20 mph.
Winds in excess of 40 mph are possible with this storm. Weak
rotation has also been seen with this storm.
Locations impacted include...
Greensburg, Newpoint, Sandusky, Lake Santee, Clarksburg and New
Salem.
This includes Interstate 74 between mile markers 135 and 144.
LAT...LON 3924 8535 3943 8554 3956 8538 3951 8530
3927 8530
TIME...MOT...LOC 2351Z 315DEG 19KT 3944 8538
CPThe Indianapolis radar (KIND), 48 km away, was scanning. The volume nearest the first event began at 23:53 UTC.
3 thunderstorm wind, 2 tornado, 2 flood, 2 flash flood. Local standard time, as filed.
Roofing material blown from a building at the intersection of South Pike Street and Howard Street.
Damage from this event began as a strong rear flank downdraft ripped the roof off a building in the southeast part of Shelbyville. Witnesses reported a funnel cloud nearby but damage was consistent with straight line winds. Witnesses reported that the funnel cloud continued southeast until it became a tornado northwest of a small subdivision off of CR 250 E. There it damaged numerous trees and damaged support beams on a porch. A masonry wall was also knocked down. The tornado continued to the southeast where it caused tree damage to a home on County Road 350 South. The most extensive tree damage would occur along County Road 375 East near County Road 500 South where two homes had widespread tree damage along with an antenna pole that was snapped. The tornado then lifted in a field to the southeast. Damage was not continuous along the tornado path, indicating the tornado did lift briefly at times.
Minor tree and roof damage at 5364 South County Road 425 East. One minor injury when homeowner walked outside during storm and was hit by flying debris 3 times leading to minor chest injury and minor lacerations.
The second tornado of the day was short lived. The tornado initially began near a river cabin and caused a narrow but intense swath of tree damage along County Road 500 East. The tornado then crossed the Flatrock River where it impacted the Van Pelt cemetery. Several grave stones were knocked over by the tornado with additional tree damage on the property. The tornado may have briefly lifted before occurring again in a field to the south then dissipating.
Two to three inch diameter tree reported down on US Highway 41 at Camp Arthur Road.
Water on the roadway but not presently deep. County road 350 East. South of Vandalia Road.
Water on roadway but not particularly deep at Indiana State Route 252 and County Road 25 West.
Flooded roads reported in numerous locations. This required road signs and motorists to find other routes. Specifically at...County Roads 1100 South and 300 East...County Roads 1000 South and 275 East...And Indiana Route 9 south of Indiana Route 252. Just north of this area, 6.66 of rain was reported at the Flat Rock 4.3 ENE CoCoRaHS site. The rain fell between 0800 and 2200 EST. This observation was confirmed by NWS IND.
Indiana State Route 9 is impassable or washed out from the Shelby County line to Hope town square. At least one water rescue was performed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2021Every state in 2021This day in weather historyThe tornado archive for Indiana, 2021Warnings in Indiana, July 2021
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: 964042, 964039, 964046, 964041, 964044, 964037, 964047, 964087, 964036.