Tornadoes · United States · Indiana · 2021
EF0 tornado, Patoka, Indiana, June 8, 2021
This EF0 tornado ran 1.3 miles across Gibson County on June 8, 2021, touching down at 5:25 PM CDT and reaching 60 yards wide. It killed nobody and injured 1, and did $20,000 of property damage.
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 record
- Rating
- EF0
- Date
- June 8, 2021
- Touchdown
- 5:25 PM CDT (22:25 UTC)
- Lifted
- 5:30 PM CDT (22:30 UTC)
- On the ground
- 5 minutes
- Path length
- 1.3 miles (2.0 km)
- Path width
- 60 yards (55 m)
- Deaths
- 0
- Injuries
- 1
- Property damage
- $20,000
- Crop damage
- $8,000
- County
- Gibson County
- Touchdown point
- 38.409, -87.593
- Lift-off point
- 38.427, -87.588
- Record number
- 2106081625-01
The damage survey
6 damage points were recorded along this path by NWS PAH, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 85 mph.
- Bean plants stripped of leaves
Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.
What the Weather Service recorded
A few small tornadoes occurred in association with a closed 500 mb low over Missouri. Isolated to scattered thunderstorms developed during the heat of the day in deep southwest flow ahead of the closed low.
The tornado began on the northwest side of Patoka along U.S. Highway 41. The tornado was captured on video. A barn roof and side walls were torn off. Part of the roof of a residence was damaged. One male was injured by airborne debris from his garage. The man received a concussion and some cuts. Limbs were broken off of several trees. Crops were damaged in a bean field. Peak winds were estimated near 85 mph.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.
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 General Thunderstorms Risk. The outlook in force was issued at 19:52 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.
Lincoln, IL (KILX), 12:00Z
10.4 hours before the tornado, 211 km from the path. June 8, 2021.
- Mixed-layer CAPE
- 96 J/kg
- Mixed-layer CIN
- -93 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1002 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 4.0 K/km
Lincoln, IL (KILX), 00:00Z
1.6 hours after it, 211 km from the path. June 9, 2021.
- Mixed-layer CAPE
- 79 J/kg
- Mixed-layer CIN
- -56 J/kg
- Surface CAPE
- 1437 J/kg
- Mixed-layer LCL
- 1265 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 7.0 K/km
The radar
The Evansville,IN radar (KVWX), 21 km away, was scanning. The volume nearest the touchdown began at 22:23 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 |
|---|---|---|---|---|
| 22:25 UTC | TORNADO | Patoka | Gibson, IN | *** 1 INJ *** BARN ROOF AND SIDE WALLS TORN OFF AND PART OF A RESIDENCE DAMAGED. ONE MALE WAS INJURED BY DEBRIS LOFTED WHILE OCCUPYING BUILDING. SEVERAL TREES DAMAGED ALONG PATH WITH CROP DAMAGE TO BEAN FIELD. EF-0 TORNA |
| 23:15 UTC | TORNADO | 2 E Petersburg | Pike, IN | DAMAGE TO CARPORT IN ALFORD. METAL DEBRIS NOTED ON ROADWAY NEAR INTERSECTION OF HIGHWAY 356 AND INTERSTATE 69 AND NEAR MILE MARKER 50 ON INTERSTATE 69. POWER LINES DOWN NEAR HIGHWAY 356 AND COUNTY ROAD 475 NORTH. DAMAGE |
| 23:15 UTC | TORNADO | 2 E Petersburg | Pike, IN | OBSERVED TORNADO NEAR THE INTERSECTION OF INTERSTATE 69 AND HIGHWAY 356 NEAR ALFORD. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2021 tornado in IndianaEvery tornado in Indiana since 1950Warnings in force in Indiana nowThe forecast where you are
The other tornadoes of June 8, 2021
9 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| June 8 | 9:11 AM CDT | EF0 | Smith, TX | 1.6 | 40 | $5,000 | ||
| June 8 | 10:02 AM CDT | EF0 | Cherokee, TX | 0.3 | 20 | $1,000 | ||
| June 8 | 10:23 AM CDT | EF0 | Cherokee, TX | 0.1 | 20 | $5,000 | ||
| June 8 | 1:42 PM CDT | EF0 | Spencer, IN | 0.1 | 15 | |||
| June 8 | 2:26 PM CDT | EF0 | Lee, MS | 0.5 | 50 | $5,000 | ||
| June 8 | 2:28 PM CDT | EF0 | Lee, MS | 0.4 | 50 | $50,000 | ||
| June 8 | 2:42 PM CDT | EF0 | Lee, MS | 0.4 | 50 | $10,000 | ||
| June 8 | 7:12 PM EDT | EF1 | Pike, IN | 2.5 | 30 | $3,000 | ||
| June 8 | 6:18 PM MDT | EF0 | Corson, SD | 0.2 | 10 |
What this means
Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.