Tornadoes · United States · Indiana · 2026

EF0 tornado, Marion County, Indiana, August 1, 2026

This EF0 tornado ran 0.2 miles across Marion County on August 1, 2026, touching down at 5:20 PM EDT and reaching 100 yards wide. It killed nobody.

Preliminary. This is NWS IND's damage survey, filed in the Damage Assessment Toolkit. The rating, the path and the casualties are the survey's and can change while it is revised. The Storm Prediction Center compiles the official record of 2026 from these surveys and publishes it in the spring of 2027; this page moves to that tornado's permanent address when it does.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. EF065 to 85 mphthis tornado

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. EF186 to 110 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. EF2111 to 135 mph

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. EF3136 to 165 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. EF4166 to 200 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. EF5over 200 mph

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unrated

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The survey

Rating, as surveyed
EF0, preliminary
Date
August 1, 2026
Touchdown
5:20 PM EDT (21:20 UTC)
Lifted
5:22 PM EDT (21:22 UTC)
On the ground
2 minutes
Path length
0.2 miles (0.4 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
County
Marion County
Touchdown point
39.730, -86.155
Lift-off point
39.733, -86.154
Highest wind the damage implies
76 mph
Surveyed by
NWS IND
Survey last edited
August 3, 2026
Record number
None yet. SPC numbers 2026 in the spring of 2027.

What the survey found

A brief tornado quickly developed and touched down at

approximately 5:20 PM EDT near the corner of Madison Avenue and

Southern Avenue. A large was tree uprooted with a few large

branches and smaller tree limbs scattered around the area.

Additional minor siding damage was done to a nearby home. The

tornado moved north along Madison Avenue causing additional damage

to trees and minor siding damage to another home. A truck trailer

was pushed towards the north denting a parked truck. The tornado

uprooted or snapped a few trees near Christel House South Academy

before quickly dissipating at approximately 5:22 PM EDT.

Written by NWS IND in the NWS Damage Assessment Toolkit. A survey is revised as better evidence arrives.

The damage survey

6 damage points were recorded along this path by NWS IND, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 76 mph.

  • Large branch broken facing ESE or E.
  • Tree uprooted and facing west. Other broken tree limbs and a few large branches scattered. Nearby house has minor siding damage with the damage direction of N
  • Trailer pushed to the north and dented this truck
  • Large tree uprooted facing W or WSW. Minor siding damage to house nearby but unsure if it is from the storm. Billboard sign partially ripped

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down. One was issued for the county at another hour that day.

Issued (UTC)ExpiredProductOffice
17:00 UTC05:47 UTCFlood WatchIND
19:19 UTC01:00 UTCFlood AdvisoryIND
21:01 UTC00:00 UTCFlood AdvisoryIND
21:23 UTC21:44 UTCTornado WarningIND
21:32 UTC00:19 UTCFlash Flood WarningIND
22:18 UTC09:00 UTCFlood WarningIND
00:19 UTC09:00 UTCFlood WarningIND

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Marginal Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:56 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Cncnati-Daytn, OH (KILN), 12:00Z

9.3 hours before the tornado, 205 km from the path. August 1, 2026.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2026-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 24 joules per kilogram, CIN -119, lifted condensation level 1105 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2026-08-01The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 75 square meters per square second, 0 to 6 km bulk shear 25 knots.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
24 J/kg
Mixed-layer CIN
-119 J/kg
Surface CAPE
9 J/kg
Mixed-layer LCL
1105 m above ground
0-6 km bulk shear
25 kt
0-1 km bulk shear
17 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.6 K/km

Open this sounding in Storm Lab

Cncnati-Daytn, OH (KILN), 00:00Z

2.7 hours after it, 205 km from the path. August 2, 2026.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2026-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 949 joules per kilogram, CIN -4, lifted condensation level 578 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2026-08-02The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 173 square meters per square second, 0 to 6 km bulk shear 48 knots.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
949 J/kg
Mixed-layer CIN
-4 J/kg
Surface CAPE
1246 J/kg
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
48 kt
0-1 km bulk shear
22 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.1
0-3 km lapse rate
5.6 K/km

Open this sounding in Storm Lab

The radar

The Indianapolis radar (KIND), 11 km away, was scanning. The volume nearest the touchdown began at 21:22 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
19:35 UTCRAIN 1.911 N MonroviaMorgan, INAmount fallen in 66 minutes. Minor flooding.
19:54 UTCTSTM WND DMGNashvilleBrown, INEstimated 40 plus mph wind gusts. Small branches and limbs down.
20:37 UTCRAIN 2.25EdinburghJohnson, INAmount in one hour. An additional 1.00 fell since last night.
21:00 UTCRAIN 3.441 W PlainfieldHendricks, INAmount in the past 3 hours. Considerable standing and flowing water.
21:05 UTCRAIN 3.71EdinburghJohnson, INTotal in past 1.5 hours. Total for the day is now 4.67 inches.
21:11 UTCFLOOD1 Sw ShelbyvilleShelby, INTorrential rains...causing standing water with heavy currents and flow. Vehicles needing to change direction.
21:20 UTCTORNADO3 S Monument CircleMarion, INA brief EF-0 tornado with estimated peak winds of 76 mph uprooted or snapped multiples trees. A few structures also sustained minor siding damage and a truck trailer was pushed to the north denting a parked truck.
21:21 UTCRAIN 0.82New PalestineHancock, INStorm total so far.
21:23 UTCTSTM WND DMG3 S Monument CircleMarion, INFew trees down/uprooted, one fell on a house. Light roof damage to another house. Time estimated from radar.
21:35 UTCRAIN 3.71 Nnw MonroviaMorgan, INStorm total. In the past 2 hours 1.79 inches has fallen. Minor flooding.
21:51 UTCFLOOD1 Sw Beech GroveMarion, INHigh water on parts of the interstates including Interstate 65 north bound near Interstate 465..traffic able to get through.
21:53 UTCRAIN 2.21HomecroftMarion, INAmount in the last 2 hours. Amount since midnight...2.84 inches.
21:55 UTCFLOOD1 N AvonHendricks, INParking lot at baseball field off of North Dan Jones Road is flooded with about 7 inches of water.
21:55 UTCFLOOD1 Sse Monument CircleMarion, IN511in.org report of flooding in both directions on Interstate 70.
21:58 UTCRAIN 1.911 Ene BrooklynMorgan, INTotal since midnight. Amount since 11 AM...1.09 inches.
22:00 UTCRAIN 1.051 E NoraMarion, INAmount in the past 60 minutes. Minor flooding.
22:00 UTCRAIN 3.663 S Monument CircleMarion, INAmount in the past 10 hours.
22:06 UTCRAIN 2.66SpeedwayMarion, IN
22:10 UTCTSTM WND DMG3 W ArlingtonRush, INTree uprooted.
22:13 UTCFLOOD2 Ne Warren ParkMarion, INFlooding is exiting the street and flowing onto the sidewalks. Report relayed by AccuWeather from a citizen.
22:30 UTCFLASH FLOOD2 Ne Warren ParkMarion, INExit ramp closed due to flooding I-465 and I-70. Time approximate.
22:30 UTCFLASH FLOOD3 Nnw ShelbyvilleShelby, INFlooding on I-74. Time approximate.
22:33 UTCRAIN 4.37BrownsburgHendricks, INAmount fallen in two hours. Approximate location.
22:42 UTCRAIN 3.731 Ne GreenfieldHancock, INStorm total. Between 600 and 630 PM rain gauge observed 1.65. Low lying areas flooded including lawns, ponds, and driveways.
22:44 UTCRAIN 1.451 Sse Country Club HeigMadison, INTotal for the day.
22:58 UTCRAIN 1.81New PalestineHancock, INUpdated storm total.
23:00 UTCRAIN 1.921 Sse Eagle Creek ReserMarion, IN
23:00 UTCRAIN 2.04Indianapolis Int'L AirpMarion, IN
23:00 UTCRAIN 2.391 Ese SpeedwayMarion, INMesonet station SPEI3 1.1 E Speedway.
23:00 UTCRAIN 3.253 Ese FairlandShelby, IN
23:10 UTCRAIN 1.842 S CastletonMarion, INTotal for the day.
23:10 UTCRAIN 2.68Broad RippleMarion, INBishop Chatard High School weather system reported this amount for the day so far.
23:10 UTCRAIN 4.17MorristownShelby, IN
23:17 UTCRAIN 3.91 E IndianapolisMarion, INAmount of rain in about 2 hours time.
23:41 UTCRAIN 1.91 Sse Country Club HeigMadison, IN2.15 inches in the southern part of the county.
23:50 UTCRAIN 1.711 S Broad RippleMarion, INRainfall amount from 4 PM until 750 PM.
23:55 UTCRAIN 1.411 Ese GreencastlePutnam, INAWOS station KGPC Greencastle.
00:00 UTCRAIN 1.451 Wnw Broad RippleMarion, INMesonet station BRDI3 White River.
00:00 UTCRAIN 1.462 Se ZionsvilleBoone, INMesonet station 9502D 1 ESE Zionsville.
00:00 UTCRAIN 1.621 Wsw CarmelHamilton, INMesonet station CARIN 1 WSW Carmel.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2026 tornado in IndianaEvery tornado in Indiana since 1950Warnings in force in Indiana nowThe forecast where you are

The other tornadoes of August 1, 2026

7 more have been surveyed in the United States that day, so far.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 11:21 PM CDTEF0Bledsoe, TN0.3100
August 16:32 PM EDTEF1Dearborn, IN5.290
August 16:21 PM CDTEF0Bledsoe, TN1.8140
August 16:32 PM CDTEF0Fentress, TN0.450
August 17:58 PM EDTEF1Preble, OH0.9250
August 18:23 PM EDTEF0Warren, OH1.8100
August 18:35 PM EDTEF0Montgomery, OH4.7150

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. A survey can be revised, so the rating, the path and the casualties can all still change.

Sources

NWS Damage Assessment Toolkit, the record the survey teams file from the damage, and NOAA Storm Prediction Center storm reports. Neither is the official database for 2026, which SPC publishes in the spring of 2027.