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.

  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
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)ExpiredProductOffice
00:10 UTC03:15 UTCFlood AdvisoryILN
00:25 UTC00:42 UTCTornado WarningILN
01:11 UTC04:15 UTCFlood AdvisoryILN
04:38 UTC07:45 UTCFlood AdvisoryILN

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.

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

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

11.6 hours after it, 47 km from the path. August 2, 2026.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z 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 44 joules per kilogram, CIN -2, lifted condensation level 551 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 2026-08-02The 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 37 square meters per square second, 0 to 6 km bulk shear 33 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
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

Open this sounding in Storm Lab

The surface observations

Middletown (MWO), 7 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
22:35 UTC80.671.6120° 8 kt161004.1VCTS
22:55 UTC78.873.4110° 8 kt171003.7VCTS
23:15 UTC100° 8 kt171003.7VCTS
23:35 UTC7773.470° 10 kt151003TS
23:55 UTC7773.490° 10 kt1003.4+TSRA BR
00:15 UTC73.473.4330° 11 kt151003.4+VCTSRA BR
00:35 UTC73.471.6240° 16 kt201004.1+TSRA BR
00:55 UTC73.471.6210° 9 kt1004.4+TSRA BR
01:15 UTC73.473.4250° 5 kt1004.4-TSRA
01:35 UTC73.471.60° 0 kt1004.4VCTS
01:55 UTC71.671.6160° 5 kt1004.4
02:15 UTC73.471.6160° 5 kt1004.4

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)ReportWhereCountyRemark
23:53 UTCTSTM WND DMG4 Nnw EatonPreble, OH4 homes significantly damaged along with tree damage.
23:58 UTCTORNADO4 Nnw EatonPreble, OHEF1 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 UTCTSTM WND DMG4 Sw West AlexandriaPreble, OHDamage 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 UTCTSTM WND DMG2 Ene South MiddletownButler, OHSmall branch from a tree snapped.
00:23 UTCTORNADO2 Wsw FranklinWarren, OHEF0 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 UTCTSTM WND DMGFranklinWarren, OHTrees downed.
00:35 UTCTORNADO4 Nnw MiamisburgMontgomery, OHUpdates 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 UTCTORNADO3 Sw DrexelMontgomery, OHEF0 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 UTCTSTM WND DMG4 Se SpringboroWarren, OHFour trees down on Applewood Lane.
02:02 UTCFLOODClaytonMontgomery, OHStanding 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.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 11:21 PM CDTEF0Bledsoe, TN0.3100
August 15:20 PM EDTEF0Marion, IN0.2100
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 18:35 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.