Tornadoes · United States · Illinois · 1998

F1 tornado, Belleview, Illinois, June 14, 1998

This F1 tornado ran 1.2 miles across Calhoun County on June 14, 1998, touching down at 4:20 PM CDT and reaching 80 yards wide. It killed nobody.

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.

  1. F040 to 72 mph

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

  2. F173 to 112 mphthis tornado

    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.

The record

Rating
F1
Date
June 14, 1998
Touchdown
4:20 PM CDT (21:20 UTC)
Path length
1.2 miles (1.9 km)
Path width
80 yards (73 m)
Deaths
0
Injuries
0
County
Calhoun County
Touchdown point
39.350, -90.750
Lift-off point
39.370, -90.730
Record number
358

What the Weather Service recorded

The Illinois State Police reported that a small tornado struck the Belleview area about 420 pm. Numerous trees were snapped off or uprooted along Sterns Hollow Road. One home had minor damage caused by flying tree limbs. The tornado moved east northeast and struck again along Johnson Hollow Road. Numerous trees were downed, one garage was destroyed, and a couple of homes suffered minor roof damage.

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

The warnings

45 minutes of warning. NWS LSX issued a tornado warning for this county at 20:35 UTC, 45 minutes before the tornado touched down, in force until 21:40 UTC.

Issued (UTC)ExpiredProductOffice
11:54 UTC12:25 UTCSevere Thunderstorm WarningLSX
20:35 UTC21:40 UTCTornado WarningLSX

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 10:53 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 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

9.3 hours before the tornado, 203 km from the path. June 14, 1998.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 1998-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -69298, lifted condensation level 1254 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Lincoln, IL at 12:00Z on 1998-06-14The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 39 square meters per square second, 0 to 6 km bulk shear 44 knots.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
-69298 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1254 m above ground
0-6 km bulk shear
44 kt
0-1 km bulk shear
12 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.1 K/km

Open this sounding in Storm Lab

Lincoln, IL (KILX), 00:00Z

2.7 hours after it, 203 km from the path. June 15, 1998.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 1998-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -14291, lifted condensation level 7105 meters above ground. Wind barbs in knots down the right edge.1000850700500300200100-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Lincoln, IL at 00:00Z on 1998-06-15The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 18 square meters per square second, 0 to 6 km bulk shear 23 knots.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
-14291 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
7105 m above ground
0-6 km bulk shear
23 kt
0-1 km bulk shear
7 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
-2.7 K/km

Open this sounding in Storm Lab

The radar

The St Louis radar (KLSX), 74 km away, was scanning. The volume nearest the touchdown began at 21:20 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 IllinoisEvery tornado in Illinois since 1950Warnings in force in Illinois nowThe forecast where you are

The other tornadoes of June 14, 1998

21 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 141:30 PM CDTF1Macon, MO0.330$10,000
June 141:40 PM CDTF0Adair, MO5.030
June 141:55 PM CDTF0Audrain, MO4.050
June 143:00 PM CDTF0Pike, MO0.250
June 143:20 PM CDTF0Scotland, MO0.230
June 143:30 PM CDTF0Clark, MO0.230
June 143:35 PM CDTF1Lewis, MO9.580
June 143:40 PM CDTF0Clark, MO0.230
June 143:50 PM CDTF0Clark, MO1.050
June 144:00 PM CDTF0Clark, MO1.050
June 144:00 PM CDTF1Adams, IL3.0801
June 145:23 PM CDTF0Schuyler, IL0.130
June 145:35 PM CDTF0Johnson, IL0.330$10,000
June 145:56 PM CDTF0Schuyler, IL0.130
June 146:08 PM CDTF0Codington, SD0.530
June 146:10 PM CDTF0Madison, IL1.0100
June 146:15 PM CDTF1Bond, IL5.51504
June 146:45 PM CDTF0Fulton, IL0.130
June 147:52 PM CDTF0Christian, IL0.130
June 148:31 PM CDTF0Clay, IL0.130
June 148:53 PM CDTF1Benton, TN1.0100$10,000

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.