Tornadoes · United States · Michigan · 1998
F0 tornado, Eaton Rapids, Michigan, June 24, 1998
This F0 tornado ran 0.1 miles across Eaton County on June 24, 1998, touching down at 5:25 PM EDT and reaching 30 yards wide. It killed nobody, and did $10,000 of property damage.
The rating scale
Tracks are drawn in the color of the rating. The Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.
F040 to 72 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
F173 to 112 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
F4207 to 260 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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
- F0
- Date
- June 24, 1998
- Touchdown
- 5:25 PM EDT (21:25 UTC)
- Path length
- 0.1 miles (0.2 km)
- Path width
- 30 yards (27 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $10,000
- County
- Eaton County
- Touchdown point
- 42.520, -84.630
- Lift-off point
- 42.520, -84.630
- Record number
- 1199
What the Weather Service recorded
Scattered severe thunderstorms developed along and north of a northward moving warm front across southern Lower Michigan during the afternoon of Wednesday, June 24th. This severe weather event was characterized by several large hail reports, with golf-ball sized hail reports received from Kent, Barry, Eaton, Ingham, and Jackson Counties and hail of 2 to 3 inches in diameter associated with a supercell thunderstorm as it tracked east-southeast across southern Ingham and northern Jackson County. This supercell thunderstorm developed over eastern Barry County and tracked across Eaton County, southwest Ingham County, and northern Jackson County. This storm resulted in several wind damage and large hail reports, an F0 tornado in southeast Eaton County, and an F1 tornado touched down in north central Jackson County near Layton Corners. No injuries were reported with the tornadoes, but damage was estimated at half a million dollars across Henrietta and Waterloo Townships in northern Jackson County. The supercell thunderstorm resulted in approximately 12,500 power outages across Eaton and Jackson Counties.
Eaton Rapids Fire Department reported a brief tornado touchdown just east of the city of Eaton Rapids, in a wooded area of northeast Hamlin Township. Eaton County Emergency Management indicated no injuries or structural damage was reported. The tornado touched down in a rural area and path length and width were not able to be determined. Damage amount was estimated and damage directly related to the tornado was limited to downed trees and power lines. The tornado was estimated to be an F0 on the Fujita scale.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
42 minutes of warning. NWS GRR issued a tornado warning for this county at 20:43 UTC, 42 minutes before the tornado touched down, in force until 21:30 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 20:11 UTC | 21:30 UTC | Severe Thunderstorm Warning | GRR |
| 20:43 UTC | 21:30 UTC | Tornado Warning | GRR |
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. The outlook in force was issued at 11:20 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.
Detroit, MI (KDTX), 12:00Z
9.4 hours before the tornado, 101 km from the path. June 24, 1998.
- Mixed-layer CAPE
- 28 J/kg
- Mixed-layer CIN
- -202 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1540 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 3.4 K/km
Detroit, MI (KDTX), 00:00Z
2.6 hours after it, 101 km from the path. June 25, 1998.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -81357 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1078 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 6.3 K/km
The radar
The Grand Rapids radar (KGRR), 86 km away, was scanning. The volume nearest the touchdown began at 21:25 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.
This ground now
The live radar over the trackEvery 1998 tornado in MichiganEvery tornado in Michigan since 1950Warnings in force in Michigan nowThe forecast where you are
The other tornadoes of June 24, 1998
6 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| June 24 | 6:06 PM EDT | F1 | Jackson, MI | 11.3 | 50 | $500,000 | ||
| June 24 | 5:20 PM MDT | F1 | Fall River, SD | 0.3 | 70 | 1 | $170,000 | |
| June 24 | 7:10 PM CDT | F0 | McIntosh, ND | 0.2 | 30 | |||
| June 24 | 7:23 PM CDT | F0 | Polk, MN | 0.2 | 30 | |||
| June 24 | 8:45 PM EDT | F2 | Ottawa, OH | 3.5 | 100 | 13 | $20 million | |
| June 24 | 9:33 PM CDT | F0 | Olmsted, MN | 0.2 | 50 |
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.