Tornadoes · United States · Ohio · 2026
EF0 tornado, Warren County, Ohio, August 1, 2026
This EF0 tornado ran 1.8 miles across Warren County on August 1, 2026, touching down at 8:23 PM EDT and reaching 100 yards wide. It killed nobody.
Preliminary. This is NWS ILN's damage survey, filed in the Damage Assessment Toolkit as Franklin OH. 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
- 8:23 PM EDT (00:23 UTC)
- Lifted
- 8:28 PM EDT (00:28 UTC)
- On the ground
- 5 minutes
- Path length
- 1.8 miles (2.9 km)
- Path width
- 100 yards (91 m)
- Deaths
- 0
- Injuries
- 0
- County
- Warren County
- Touchdown point
- 39.547, -84.332
- Lift-off point
- 39.567, -84.311
- Highest wind the damage implies
- 80 mph
- Surveyed by
- NWS ILN
- The office's name for it
- Franklin OH
- Survey last edited
- August 4, 2026
- Record number
- None yet. SPC numbers 2026 in the spring of 2027.
What the survey found
The National Weather Service has confirmed an EF0 tornado in Franklin in Warren County, Ohio.
Southwest of Franklin, several large tree limbs were downed along Hamilton-Middletown Road and State Route 73. As the tornado moved northeast, more tree damage was noted on Dayton-Oxford Road, and a segment of a corn field near Water Source Drive was flattened. Just northeast of Water Source Drive, one large metal building at an industrial facility had a large portion of a northwest-facing wall removed, along with a portion of the roof. Damage at this location supported wind speed estimates of 80 MPH, the highest wind speeds from this tornado.
Several tree limbs were downed in a neighborhood near Forest Ave, Chestnut Street, and Park Ave. One house on Park Ave had some siding damage.
The National Weather Service would like to thank the Warren County Emergency Management Agency for their coordination.
Written by NWS ILN in the NWS Damage Assessment Toolkit. A survey is revised as better evidence arrives.
The damage survey
23 damage points were recorded along this path by NWS ILN, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 80 mph.
- Corn stalk flattened, carport destroyed, two trees down at 909 Snyder.
- Jefferson Township Fire Chief relayed that an outbuilding at this retail location was destroyed. Additionally, photos show less than 20% roof loss with panels lifted from a brick building.
- Vinyl siding ripped from home and other side paneling damage.
- Field scouring/flattened corn leading up to intersection of S Snyder and Forney Rd.
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 |
|---|---|---|---|
| 00:10 UTC | 03:15 UTC | Flood Advisory | ILN |
| 00:25 UTC | 00:42 UTC | Tornado Warning | ILN |
| 01:11 UTC | 04:15 UTC | Flood Advisory | ILN |
| 04:38 UTC | 07:45 UTC | Flood Advisory | ILN |
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 Slight 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), 00:00Z
0.4 hours before the tornado, 47 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
Cncnati-Daytn, OH (KILN), 12:00Z
11.6 hours after it, 47 km from the path. August 2, 2026.
- Mixed-layer CAPE
- 44 J/kg
- Mixed-layer CIN
- -2 J/kg
- Surface CAPE
- 108 J/kg
- Mixed-layer LCL
- 551 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 4.4 K/km
The surface observations
Middletown (MWO), 7 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 22:35 UTC | 80.6 | 71.6 | 120° 8 kt | 16 | 1004.1 | VCTS |
| 22:55 UTC | 78.8 | 73.4 | 110° 8 kt | 17 | 1003.7 | VCTS |
| 23:15 UTC | 100° 8 kt | 17 | 1003.7 | VCTS | ||
| 23:35 UTC | 77 | 73.4 | 70° 10 kt | 15 | 1003 | TS |
| 23:55 UTC | 77 | 73.4 | 90° 10 kt | 1003.4 | +TSRA BR | |
| 00:15 UTC | 73.4 | 73.4 | 330° 11 kt | 15 | 1003.4 | +VCTSRA BR |
| 00:35 UTC | 73.4 | 71.6 | 240° 16 kt | 20 | 1004.1 | +TSRA BR |
| 00:55 UTC | 73.4 | 71.6 | 210° 9 kt | 1004.4 | +TSRA BR | |
| 01:15 UTC | 73.4 | 73.4 | 250° 5 kt | 1004.4 | -TSRA | |
| 01:35 UTC | 73.4 | 71.6 | 0° 0 kt | 1004.4 | VCTS | |
| 01:55 UTC | 71.6 | 71.6 | 160° 5 kt | 1004.4 | ||
| 02:15 UTC | 73.4 | 71.6 | 160° 5 kt | 1004.4 |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Cincinnati radar (KILN), 45 km away, was scanning. The volume nearest the touchdown began at 00:22 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 |
|---|---|---|---|---|
| 23:53 UTC | TSTM WND DMG | 4 Nnw Eaton | Preble, OH | 4 homes significantly damaged along with tree damage. |
| 23:58 UTC | TORNADO | 4 Nnw Eaton | Preble, OH | EF1 tornado confirmed northwest of Eaton in Preble County, Ohio. Maximum winds of 100 MPH. This tornado destroyed one outbuilding and caused significant roof damage at two houses. Extensive corn field damage was also not |
| 00:04 UTC | TSTM WND DMG | 4 Sw West Alexandria | Preble, OH | Damage at a property on Quaker Trace Road. A few tree limbs downed, a barn door was removed, and some roof damage at a house. |
| 00:07 UTC | TSTM WND DMG | 2 Ene South Middletown | Butler, OH | Small branch from a tree snapped. |
| 00:23 UTC | TORNADO | 2 Wsw Franklin | Warren, OH | EF0 tornado confirmed in Franklin in Warren County, Ohio. Maximum winds of 80 MPH. This tornado caused tree damage in several locations, and removed part of a wall from a large metal industrial building. |
| 00:28 UTC | TSTM WND DMG | Franklin | Warren, OH | Trees downed. |
| 00:35 UTC | TORNADO | 4 Nnw Miamisburg | Montgomery, OH | Updates previous LSR from 3 SW Drexel. EF0 tornado confirmed east of New Lebanon in Montgomery County, Ohio. Maximum winds of 75 MPH. This tornado caused tree and corn field damage near Germantown Liberty Road and along |
| 00:37 UTC | TORNADO | 3 Sw Drexel | Montgomery, OH | EF0 tornado confirmed east of New Lebanon in Montgomery County, Ohio. Maximum winds of 75 MPH. This tornado caused tree damage along Snyder Road, with some minor damage to a few structures. |
| 01:17 UTC | TSTM WND DMG | 4 Se Springboro | Warren, OH | Four trees down on Applewood Lane. |
| 02:02 UTC | FLOOD | Clayton | Montgomery, OH | Standing water on roadways. Ponds overflowing. |
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 OhioEvery tornado in Ohio since 1950Warnings in force in Ohio 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 | 5:20 PM EDT | EF0 | Marion, IN | 0.2 | 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 | 8:35 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.