Tornadoes · United States · Arkansas · 1998

F1 tornado, Gravette, Arkansas, March 30, 1998

This F1 tornado ran 1.2 miles across Benton County on March 30, 1998, touching down at 8:25 PM CST and reaching 130 yards wide. It killed nobody, and did $100,000 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.

  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
March 30, 1998
Touchdown
8:25 PM CST (02:25 UTC)
Path length
1.2 miles (1.9 km)
Path width
130 yards (119 m)
Deaths
0
Injuries
0
Property damage
$100,000
County
Benton County
Touchdown point
36.400, -94.450
Lift-off point
36.420, -94.430
Record number
53

What the Weather Service recorded

A solid line of thunderstorms covering the entire north-south length of Oklahoma, associated with a cold front and wave of low pressure, moved into western Arkansas around 800 PM on the evening of March 30. The part of the line moving out of eastcentral Oklahoma had a bow echo signature as it moved into Arkansas, causing many reports of severe tstm winds. At the north end of this bow echo in Benton County, an F1 tornado formed near Gravette, causing considerable damage on the south and east sides of town.

Considerable damage was reported with an F1 tornado and thunderstorm winds that blew through Gravette. Three homes in the area were damaged when large trees blew over. One of the houses' occupants described the storm as sounding like a freight train. Other homes had minor roof damage. High winds downed a power line, which left the east side of the city without power for about 35 to 40 minutes. Doors were blown out of the Hendren Plastics plant on Hwy. 72 in eastern Gravette. A tree was blown onto Hwy. 72 near Gravette, making travel impossible until it was removed around 10 pm. Another tree was blown across Ridge Road.

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

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
01:38 UTC02:30 UTCSevere Thunderstorm WarningTSA
02:35 UTC03:00 UTCSevere Thunderstorm WarningTSA

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 10:52 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

2.4 hours before the tornado, 79 km from the path. March 31, 1998.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1998-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 368 joules per kilogram, CIN -25, lifted condensation level 1388 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 1998-03-31The 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 247 square meters per square second, 0 to 6 km bulk shear 52 knots.1939587897Sfc1 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
368 J/kg
Mixed-layer CIN
-25 J/kg
Surface CAPE
643 J/kg
Mixed-layer LCL
1388 m above ground
0-6 km bulk shear
52 kt
0-1 km bulk shear
26 kt
0-1 km storm-relative helicity
247 m²/s²
0-3 km storm-relative helicity
389 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.0
0-3 km lapse rate
6.9 K/km

Open this sounding in Storm Lab

Springfield, MO (KSGF), 12:00Z

9.6 hours after it, 79 km from the path. March 31, 1998.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 1998-03-31Temperature 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 -69304, lifted condensation level 882 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 1998-03-31The 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 -265 square meters per square second, 0 to 6 km bulk shear 71 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
-69304 J/kg
Surface CAPE
55 J/kg
Mixed-layer LCL
882 m above ground
0-6 km bulk shear
71 kt
0-1 km bulk shear
30 kt
0-1 km storm-relative helicity
-265 m²/s²
0-3 km storm-relative helicity
-25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.9 K/km

Open this sounding in Storm Lab

The radar

The Tulsa radar (KINX), 104 km away, was scanning. The volume nearest the touchdown began at 02:27 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 March 30, 1998

2 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 305:18 PM CSTF0Hughes, OK0.630
March 305:35 PM CSTF1Wapello, IA0.230$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.