Tornadoes · United States · Arkansas · 1998

F0 tornado, Clinton, Arkansas, April 15, 1998

This F0 tornado ran 2.0 miles across Van Buren County on April 15, 1998, touching down at 9:45 PM CDT and reaching 100 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 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.

The record

Rating
F0
Date
April 15, 1998
Touchdown
9:45 PM CDT (02:45 UTC)
Path length
2.0 miles (3.2 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
County
Van Buren County
Touchdown point
35.580, -92.480
Lift-off point
35.600, -92.450
Record number
217

What the Weather Service recorded

An F0 tornado touched downed about one half mile west of Clinton on Highway 16. A tree fell on a house with some roof damage noted. More trees were knocked down about 100 yards farther east, with some shingle damage to an outbuilding. About a mile northeast of the initial damage, a tree fell across a power line and blocked Highway 16. About a mile farther northeast, a large tree limb was found in the driveway of a home, with tree tops removed near the home. The damage was consistent with an F0 rating.

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

The warnings

39 minutes of warning. NWS LZK issued a tornado warning for this county at 02:06 UTC, 39 minutes before the tornado touched down, in force until 03:10 UTC.

Issued (UTC)ExpiredProductOffice
02:06 UTC03:10 UTCTornado WarningLZK

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 Moderate Risk. The outlook in force was issued at 10:56 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 (KSGF), 00:00Z

2.8 hours before the tornado, 189 km from the path. April 16, 1998.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1998-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 576 joules per kilogram, CIN -58, lifted condensation level 731 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 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, Springfield, MO at 00:00Z on 1998-04-16The 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 138 square meters per square second, 0 to 6 km bulk shear 61 knots.1939587897117Sfc1 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
576 J/kg
Mixed-layer CIN
-58 J/kg
Surface CAPE
1179 J/kg
Mixed-layer LCL
731 m above ground
0-6 km bulk shear
61 kt
0-1 km bulk shear
18 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
226 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.8
0-3 km lapse rate
6.8 K/km

Open this sounding in Storm Lab

Springfield, MO (KSGF), 12:00Z

9.2 hours after it, 189 km from the path. April 16, 1998.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 1998-04-16Temperature 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 -83082, lifted condensation level 990 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, Springfield, MO at 12:00Z on 1998-04-16The 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 -108 square meters per square second, 0 to 6 km bulk shear 89 knots.1939587897117Sfc1 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
-83082 J/kg
Surface CAPE
7 J/kg
Mixed-layer LCL
990 m above ground
0-6 km bulk shear
89 kt
0-1 km bulk shear
14 kt
0-1 km storm-relative helicity
-108 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.3 K/km

Open this sounding in Storm Lab

The radar

The Little Rock radar (KLZK), 86 km away, was scanning. The volume nearest the touchdown began at 02:46 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 ArkansasEvery tornado in Arkansas since 1950Warnings in force in Arkansas nowThe forecast where you are

The other tornadoes of April 15, 1998

18 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
April 153:50 PM CDTF0Henry, IL0.130
April 155:00 PM CDTF0Mercer, IL0.130
April 155:47 PM CDTF0Monroe, IL0.150
April 156:12 PM CDTF0Saint Clair, IL0.230
April 156:32 PM CDTF0Washington, IL0.230
April 156:32 PM CDTF0Perry, IL1.050
April 157:05 PM CDTF0Monroe, IL16.050$10,000
April 157:30 PM CDTF1Washington, IL2.050$20,000
April 157:43 PM CDTF2Jefferson, IL5.52501$450,000
April 157:52 PM CDTF2Marion, IL4.0300
April 158:05 PM CDTF1Marion, IL9.0250
April 158:39 PM CDTF1Madison, MO12.0100
April 158:45 PM CDTF2Clay, IL9.51508$2.1 million
April 158:50 PM CDTF0Perry, MO0.230
April 159:00 PM CDTF2Clay, IL16.0130$100,000
April 159:36 PM CDTF0Jackson, IL0.330
April 1510:34 PM CDTF0Jackson, IL0.430
April 1512:15 AM ESTF2Pike, IN4.050$500,000

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.