EF1 tornado, Mt Comfort to Eden, Indiana, May 30, 2008

1. EF065 to 85 mph

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

2. EF186 to 110 mphthis tornado

   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.

Rating

EF1

Date

May 30, 2008

Touchdown

10:35 PM EDT (02:35 UTC)

Lifted

10:40 PM EDT (02:40 UTC)

On the ground

5 minutes

Path length

4.5 miles (7.2 km)

Path width

200 yards (183 m)

Deaths

0

Injuries

0

Property damage

$500,000

County

Hancock County

Touchdown point

39.883, -85.881

Lift-off point

39.899, -85.796

Record number

0805302035-01

A warm front moved through through the area earlier in the day allowing for warm temperatures over central Indiana. Severe storms formed in advance of a cold front that moved through later at night. These storms contained hail and damaging thunderstorm winds. Three tornadoes also formed with these storms including one that moved through the east side of Indianapolis. Heavy rain caused flash flooding across many locations.

The tornado began in Marion County at 2127 near 42nd Street and Post Road and tracked southeastward for 3.1 miles before exiting Marion County. The tornado exited Marion County at 2132 and entered Hancock County on North County Line Road, 500 meters south of East 38th Street. The tornado continued in Hancock County for 4.0 miles until lifting at 2136, 500 feet south of West 200 North on North 400 West. The tornado was rated EF-2 while in Marion County with a width of 150 yards and winds of 125 mph. The tornado was rated EF-1 while in Hancock County with a width of 100 yards and winds near 100 mph. Numerous structures were damaged in Marion County with the hardest hit area being an apartment complex near 38th Street and Mittthoefer Road. While in Hancock County, the tornado damaged barns, houses, billboards, trees, and powerlines. The tornado was associated with an embedded supercell that was overtaken by a line.

Wind speeds with this tornado were around 100 mph based on damage indicators. Multiple structures had damage including farm buildings and houses.

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

1 minute of warning. NWS IND issued a tornado warning for this county at 02:34 UTC, 1 minute before the tornado touched down, in force until 03:15 UTC.

The county was under a tornado watch, issued at 00:52 UTC and running to 03:00 UTC.

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 Slight Risk, with a 0.10 chance of a tornado within 25 miles. The outlook in force was issued at 00:53 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.

The Indianapolis radar (KIND), 43 km away, was scanning. The volume nearest the touchdown began at 02:35 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.

Local storm reports within 60 km of the path, in the three hours either side.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

The live radar over the trackEvery 2008 tornado in IndianaEvery tornado in Indiana since 1950Warnings in force in Indiana nowThe forecast where you are

18 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.