Tornadoes · United States · Indiana · 2010
EF0 tornado, Wolcott, Indiana, June 4, 2010
This EF0 tornado ran 0.1 miles across White County on June 4, 2010, touching down at 8:55 PM EDT and reaching 20 yards wide. It killed nobody.
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 4, 2010
- Touchdown
- 8:55 PM EDT (00:55 UTC)
- Lifted
- 8:56 PM EDT (00:56 UTC)
- On the ground
- 1 minutes
- Path length
- 0.1 miles (0.1 km)
- Path width
- 20 yards (18 m)
- Deaths
- 0
- Injuries
- 0
- County
- White County
- Touchdown point
- 40.781, -87.016
- Lift-off point
- 40.781, -87.014
- Record number
- 1006041855-01
What the Weather Service recorded
A stable air mass was in place across much of the area in the wake of a line of storms from earlier in the day. Increasing instability and an approaching upper level wave set the stage for thunderstorms to develop. A few of these took on super-cell characteristics across Cass and White counties. A storm spotter photographed a tornado northeast of Wolcott, Indiana which developed over an open field.
Local media relayed a report of a tornado being observed northeast of Wolcott by a trained spotter. The spotter subsequently sent a photograph and video of the tornado. The spotter stated that it touched down in an open field and was on the ground for less than a minute, causing no appreciable damage. The width of the circulation has been estimated from a photograph of the debris cloud. As no damage was reported, a intensity of EF0 with winds of 65 mph will be assigned.
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.
The county was under a severe thunderstorm watch, issued at 22:31 UTC and running to 03:21 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 22:31 UTC | 03:21 UTC | Severe Thunderstorm Watch | IWX |
| 00:32 UTC | 01:30 UTC | Severe Thunderstorm Warning | IWX |
| 12:00 UTC | 09:02 UTC | Flood Watch | IWX |
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 19:59 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), 00:00Z
0.9 hours before the tornado, 151 km from the path. June 5, 2010.
- Mixed-layer CAPE
- 737 J/kg
- Mixed-layer CIN
- -63 J/kg
- Surface CAPE
- 1587 J/kg
- Mixed-layer LCL
- 1737 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
- 0-3 km lapse rate
- 7.3 K/km
Lincoln, IL (KILX), 12:00Z
11.1 hours after it, 151 km from the path. June 5, 2010.
- Mixed-layer CAPE
- 2752 J/kg
- Mixed-layer CIN
- -21 J/kg
- Surface CAPE
- 1106 J/kg
- Mixed-layer LCL
- 671 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.0
- 0-3 km lapse rate
- 4.9 K/km
The surface observations
Lafayette (LAF), 41 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 23:54 UTC | 84 | 66 | 250° 7 kt | 1006.4 | ||
| 00:54 UTC | 82 | 66 | 240° 7 kt | 1006.8 | ||
| 01:54 UTC | 80 | 66 | 220° 5 kt | 1007.1 | ||
| 02:54 UTC | 79 | 67 | 220° 5 kt | 1007.5 |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Northern Indiana radar (KIWX), 128 km away, was scanning. The volume nearest the touchdown began at 00:55 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 |
|---|---|---|---|---|
| 01:00 UTC | TSTM WND GST 60 | Monon | White, IN | RELAYED REPORT FROM VIEWER |
| 01:55 UTC | TSTM WND DMG | 5 E Camden | Carroll, IN | ROOF BLOWN OFF OF A BARN |
| 02:00 UTC | TSTM WND DMG | 6 Ese Camden | Carroll, IN | SEMI TRAILER BLOWN INTO A DITCH. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2010 tornado in IndianaEvery tornado in Indiana since 1950Warnings in force in Indiana nowThe forecast where you are
The other tornadoes of June 4, 2010
4 more were confirmed in the United States that day.
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.