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.
EF065 to 85 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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) | Expired | Product | Office |
|---|---|---|---|
| 17:00 UTC | 05:47 UTC | Flood Watch | IND |
| 19:19 UTC | 01:00 UTC | Flood Advisory | IND |
| 21:01 UTC | 00:00 UTC | Flood Advisory | IND |
| 21:23 UTC | 21:44 UTC | Tornado Warning | IND |
| 21:32 UTC | 00:19 UTC | Flash Flood Warning | IND |
| 22:18 UTC | 09:00 UTC | Flood Warning | IND |
| 00:19 UTC | 09:00 UTC | Flood Warning | IND |
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.
- 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
Cncnati-Daytn, OH (KILN), 00:00Z
2.7 hours after it, 205 km from the path. August 2, 2026.
- 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
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) | Report | Where | County | Remark |
|---|---|---|---|---|
| 19:35 UTC | RAIN 1.91 | 1 N Monrovia | Morgan, IN | Amount fallen in 66 minutes. Minor flooding. |
| 19:54 UTC | TSTM WND DMG | Nashville | Brown, IN | Estimated 40 plus mph wind gusts. Small branches and limbs down. |
| 20:37 UTC | RAIN 2.25 | Edinburgh | Johnson, IN | Amount in one hour. An additional 1.00 fell since last night. |
| 21:00 UTC | RAIN 3.44 | 1 W Plainfield | Hendricks, IN | Amount in the past 3 hours. Considerable standing and flowing water. |
| 21:05 UTC | RAIN 3.71 | Edinburgh | Johnson, IN | Total in past 1.5 hours. Total for the day is now 4.67 inches. |
| 21:11 UTC | FLOOD | 1 Sw Shelbyville | Shelby, IN | Torrential rains...causing standing water with heavy currents and flow. Vehicles needing to change direction. |
| 21:20 UTC | TORNADO | 3 S Monument Circle | Marion, IN | A 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 UTC | RAIN 0.82 | New Palestine | Hancock, IN | Storm total so far. |
| 21:23 UTC | TSTM WND DMG | 3 S Monument Circle | Marion, IN | Few trees down/uprooted, one fell on a house. Light roof damage to another house. Time estimated from radar. |
| 21:35 UTC | RAIN 3.7 | 1 Nnw Monrovia | Morgan, IN | Storm total. In the past 2 hours 1.79 inches has fallen. Minor flooding. |
| 21:51 UTC | FLOOD | 1 Sw Beech Grove | Marion, IN | High water on parts of the interstates including Interstate 65 north bound near Interstate 465..traffic able to get through. |
| 21:53 UTC | RAIN 2.21 | Homecroft | Marion, IN | Amount in the last 2 hours. Amount since midnight...2.84 inches. |
| 21:55 UTC | FLOOD | 1 N Avon | Hendricks, IN | Parking lot at baseball field off of North Dan Jones Road is flooded with about 7 inches of water. |
| 21:55 UTC | FLOOD | 1 Sse Monument Circle | Marion, IN | 511in.org report of flooding in both directions on Interstate 70. |
| 21:58 UTC | RAIN 1.91 | 1 Ene Brooklyn | Morgan, IN | Total since midnight. Amount since 11 AM...1.09 inches. |
| 22:00 UTC | RAIN 1.05 | 1 E Nora | Marion, IN | Amount in the past 60 minutes. Minor flooding. |
| 22:00 UTC | RAIN 3.66 | 3 S Monument Circle | Marion, IN | Amount in the past 10 hours. |
| 22:06 UTC | RAIN 2.66 | Speedway | Marion, IN | |
| 22:10 UTC | TSTM WND DMG | 3 W Arlington | Rush, IN | Tree uprooted. |
| 22:13 UTC | FLOOD | 2 Ne Warren Park | Marion, IN | Flooding is exiting the street and flowing onto the sidewalks. Report relayed by AccuWeather from a citizen. |
| 22:30 UTC | FLASH FLOOD | 2 Ne Warren Park | Marion, IN | Exit ramp closed due to flooding I-465 and I-70. Time approximate. |
| 22:30 UTC | FLASH FLOOD | 3 Nnw Shelbyville | Shelby, IN | Flooding on I-74. Time approximate. |
| 22:33 UTC | RAIN 4.37 | Brownsburg | Hendricks, IN | Amount fallen in two hours. Approximate location. |
| 22:42 UTC | RAIN 3.73 | 1 Ne Greenfield | Hancock, IN | Storm total. Between 600 and 630 PM rain gauge observed 1.65. Low lying areas flooded including lawns, ponds, and driveways. |
| 22:44 UTC | RAIN 1.45 | 1 Sse Country Club Heig | Madison, IN | Total for the day. |
| 22:58 UTC | RAIN 1.81 | New Palestine | Hancock, IN | Updated storm total. |
| 23:00 UTC | RAIN 1.92 | 1 Sse Eagle Creek Reser | Marion, IN | |
| 23:00 UTC | RAIN 2.04 | Indianapolis Int'L Airp | Marion, IN | |
| 23:00 UTC | RAIN 2.39 | 1 Ese Speedway | Marion, IN | Mesonet station SPEI3 1.1 E Speedway. |
| 23:00 UTC | RAIN 3.25 | 3 Ese Fairland | Shelby, IN | |
| 23:10 UTC | RAIN 1.84 | 2 S Castleton | Marion, IN | Total for the day. |
| 23:10 UTC | RAIN 2.68 | Broad Ripple | Marion, IN | Bishop Chatard High School weather system reported this amount for the day so far. |
| 23:10 UTC | RAIN 4.17 | Morristown | Shelby, IN | |
| 23:17 UTC | RAIN 3.9 | 1 E Indianapolis | Marion, IN | Amount of rain in about 2 hours time. |
| 23:41 UTC | RAIN 1.9 | 1 Sse Country Club Heig | Madison, IN | 2.15 inches in the southern part of the county. |
| 23:50 UTC | RAIN 1.71 | 1 S Broad Ripple | Marion, IN | Rainfall amount from 4 PM until 750 PM. |
| 23:55 UTC | RAIN 1.41 | 1 Ese Greencastle | Putnam, IN | AWOS station KGPC Greencastle. |
| 00:00 UTC | RAIN 1.45 | 1 Wnw Broad Ripple | Marion, IN | Mesonet station BRDI3 White River. |
| 00:00 UTC | RAIN 1.46 | 2 Se Zionsville | Boone, IN | Mesonet station 9502D 1 ESE Zionsville. |
| 00:00 UTC | RAIN 1.62 | 1 Wsw Carmel | Hamilton, IN | Mesonet 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.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| August 1 | 1:21 PM CDT | EF0 | Bledsoe, TN | 0.3 | 100 | |||
| August 1 | 6:32 PM EDT | EF1 | Dearborn, IN | 5.2 | 90 | |||
| August 1 | 6:21 PM CDT | EF0 | Bledsoe, TN | 1.8 | 140 | |||
| August 1 | 6:32 PM CDT | EF0 | Fentress, TN | 0.4 | 50 | |||
| August 1 | 7:58 PM EDT | EF1 | Preble, OH | 0.9 | 250 | |||
| August 1 | 8:23 PM EDT | EF0 | Warren, OH | 1.8 | 100 | |||
| August 1 | 8:35 PM EDT | EF0 | Montgomery, OH | 4.7 | 150 |
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.