F0 tornado, Billville, Indiana, June 29, 1998

1. F040 to 72 mphthis tornado

   Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

2. F173 to 112 mph

   Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

3. F2113 to 157 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. F3158 to 206 mph

   Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

5. F4207 to 260 mph

   Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

6. F5261 to 318 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.

Rating

F0

Date

June 29, 1998

Touchdown

7:05 PM EST (00:05 UTC)

Path length

1.0 miles (1.6 km)

Path width

80 yards (73 m)

Deaths

0

Injuries

0

Property damage

$30,000

County

Clay County

Touchdown point

39.500, -87.130

Lift-off point

39.500, -87.130

Record number

1161

A large and powerful squall line known as a Derecho originated in Iowa the morning of the 29th, slammed through Central Illinois the afternoon of the 29th and swept across Central Indiana the evening of the 29th. This squall line produced wind gusts of 40 to nearly 80 mph across central Indiana causing damage in nearly every central Indiana County. A weak tornado briefly touched down near Brazil aroun 7 PM while another weak tornado briefly touched down near Edwardsport around 9 PM. These tornadoes caused minor house damage and major tree damage. Otherwise, most wind damage resulted in widespread tree and powerline damage across central Indiana, and in a handful of cases, trees fell on houses and/or cars causing additional damage. Hardest hit areas included the Indianapolis area near Plainfield where hundreds of trees were mowed down by 70 mph straightline winds. Also hard hit was the Bedford area with hundreds of trees being toppled. And the Columbus area also experienced widespread tree and powerline damage in addition to two semitractor trucks being blown off I-65.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

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 Storm Prediction Center had this point in a Moderate Risk. The outlook in force was issued at 10:58 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 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.

Terre Haute (HUF), 16 km from the path, in the two hours either side.

From the Iowa Environmental Mesonet's archive of airport observations.

The live radar over the trackEvery 1998 tornado in IndianaEvery tornado in Indiana since 1950Warnings in force in Indiana nowThe forecast where you are

26 more were confirmed in the United States that day.

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.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.