Tornadoes · United States · Missouri · 1990

F1 tornado, Henry County, Missouri, June 8, 1990

This F1 tornado ran 0.2 miles across Henry County on June 8, 1990, touching down at 9:35 PM CDT and reaching 50 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 8, 1990
Touchdown
9:35 PM CDT (02:35 UTC)
Path length
0.2 miles (0.3 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
County
Henry County
Touchdown point
38.530, -93.530
Record number
657

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

Issued (UTC)ExpiredProductOffice
03:27 UTC07:00 UTCFlash Flood WarningEAX
06:21 UTC09:15 UTCFlash Flood WarningEAX

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 06:33 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.

Springfield, MO (KUMN), 00:00Z

2.6 hours before the tornado, 183 km from the path. June 9, 1990.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1990-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 3399 joules per kilogram, CIN -43, lifted condensation level 1133 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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, Springfield, MO at 00:00Z on 1990-06-09The 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 38 square meters per square second, 0 to 6 km bulk shear 26 knots.193958Sfc1 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
3399 J/kg
Mixed-layer CIN
-43 J/kg
Surface CAPE
4136 J/kg
Mixed-layer LCL
1133 m above ground
0-6 km bulk shear
26 kt
0-1 km bulk shear
13 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3
0-3 km lapse rate
6.7 K/km

Open this sounding in Storm Lab

Springfield, MO (KUMN), 12:00Z

9.4 hours after it, 183 km from the path. June 9, 1990.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 1990-06-09Temperature 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 -5670, lifted condensation level 1790 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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, Springfield, MO at 12:00Z on 1990-06-09The 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 60 square meters per square second, 0 to 6 km bulk shear 26 knots.193958Sfc1 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
-5670 J/kg
Surface CAPE
25 J/kg
Mixed-layer LCL
1790 m above ground
0-6 km bulk shear
26 kt
0-1 km bulk shear
25 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.6 K/km

Open this sounding in Storm Lab

The surface observations

Whiteman Afb (SZL), 22 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
01:00 UTC7366120° 4 kt1012.9TSRA
02:00 UTC686360° 12 kt1013.5TSRA
02:07 UTC300° 20 kt1016.6
02:13 UTC330° 22 kt271016.6
02:45 UTC90° 7 kt1014.2
03:00 UTC6763140° 2 kt1014.6TSRA
04:00 UTC6763170° 12 kt191014.9TSRA

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

This ground now

The live radar over the trackEvery 1990 tornado in MissouriEvery tornado in Missouri since 1950Warnings in force in Missouri nowThe forecast where you are

The other tornadoes of June 8, 1990

20 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 88:00 AM ESTF0Wells, IN0.113$50 to $500
June 85:00 PM EDTF2York, PA1.0601$50,000 to $500,000
June 85:11 PM EDTF0Richland, OH1.020$500 to $5,000
June 85:35 PM EDTF0Baltimore, MD0.313$500 to $5,000
June 86:35 PM CDTF1Gray, TX1.490
June 87:26 PM CDTF0Lyon, KS0.110
June 87:27 PM CDTF0Gray, TX1.280
June 87:30 PM CDTF0Carson, TX0.870
June 87:47 PM CDTF0Carson, TX1.170
June 87:49 PM CDTF0Carson, TX0.960
June 88:04 PM CDTF2Carson, TX2.6300$50 to $500
June 88:10 PM CDTF0Johnson, KS0.110
June 89:15 PM EDTF0Somerset, PA0.530
June 88:15 PM CDTF0Greenwood, KS0.550
June 88:23 PM CDTF0Carson, TX1.060
June 88:46 PM CDTF0Carson, TX1.280
June 88:55 PM CDTF1Wheeler, TX2.2110$5,000 to $50,000
June 89:05 PM CDTF0Carson, TX1.260
June 89:20 PM CDTF0Gray, TX1.870
June 89:50 PM CDTF2Wheeler, TX1.6200$5,000 to $50,000

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.