Tornadoes · United States · Kansas · 2002

F0 tornado, Windthorst to Kingsdown, Kansas, May 7, 2002

From Windthorst to Kingsdown, this F0 tornado ran 2.2 miles across Ford County on May 7, 2002, touching down at 7:20 PM CDT and reaching 75 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
May 7, 2002
Touchdown
7:20 PM CDT (00:20 UTC)
Path length
2.2 miles (3.5 km)
Path width
75 yards (69 m)
Deaths
0
Injuries
0
County
Ford County
Touchdown point
37.520, -99.720
Lift-off point
37.530, -99.700
Record number
689

What the Weather Service recorded

This tornado damaged trees along the river and moved into Kiowa county.

This tornado crossed slowly into northern Clark county.

This tornado did not hit anything to receive a rating other than zero.

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

The warnings

24 minutes of warning. NWS DDC issued a tornado warning for this county at 23:56 UTC, 24 minutes before the tornado touched down, in force until 00:30 UTC.

Issued (UTC)ExpiredProductOffice
21:30 UTC22:15 UTCSevere Thunderstorm WarningDDC
22:16 UTC23:00 UTCSevere Thunderstorm WarningDDC
22:44 UTC23:30 UTCSevere Thunderstorm WarningDDC
22:53 UTC23:30 UTCTornado WarningDDC
23:32 UTC00:15 UTCTornado WarningDDC
23:56 UTC00:30 UTCTornado WarningDDC
00:17 UTC04:00 UTCFlash Flood WarningDDC
00:29 UTC01:00 UTCTornado WarningDDC
00:57 UTC01:45 UTCSevere Thunderstorm WarningDDC
01:07 UTC01:45 UTCTornado WarningDDC
01:26 UTC02:15 UTCSevere Thunderstorm WarningDDC
02:16 UTC03:00 UTCSevere Thunderstorm WarningDDC

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, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 22:41 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.

Dodge City, (KDDC), 00:00Z

0.3 hours before the tornado, 32 km from the path. May 8, 2002.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 00:00Z on 2002-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 512 joules per kilogram, CIN -210, lifted condensation level 1278 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 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, Dodge City, at 00:00Z on 2002-05-08The 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 351 square meters per square second, 0 to 6 km bulk shear 60 knots.193958Sfc1 km3 km6 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
512 J/kg
Mixed-layer CIN
-210 J/kg
Surface CAPE
259 J/kg
Mixed-layer LCL
1278 m above ground
0-6 km bulk shear
60 kt
0-1 km bulk shear
35 kt
0-1 km storm-relative helicity
351 m²/s²
0-3 km storm-relative helicity
498 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9
0-3 km lapse rate
6.5 K/km

Open this sounding in Storm Lab

Dodge City, (KDDC), 12:00Z

11.7 hours after it, 32 km from the path. May 8, 2002.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2002-05-08Temperature 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 -74486, lifted condensation level 3195 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, Dodge City, at 12:00Z on 2002-05-08The 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 11 square meters per square second, 0 to 6 km bulk shear 41 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
0 J/kg
Mixed-layer CIN
-74486 J/kg
Surface CAPE
534 J/kg
Mixed-layer LCL
3195 m above ground
0-6 km bulk shear
41 kt
0-1 km bulk shear
23 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.2 K/km

Open this sounding in Storm Lab

The surface observations

Dodge City (DDC), 35 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
22:56 UTC755920° 21 kt261003
23:15 UTC75.257.2360° 17 kt221003.4TS
23:56 UTC756170° 22 kt261002.7TS
00:56 UTC705690° 20 kt241002
01:56 UTC6659100° 13 kt1002.4

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

The radar

The Dodge City radar (KDDC), 35 km away, was scanning. The volume nearest the touchdown began at 00:21 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 2002 tornado in KansasEvery tornado in Kansas since 1950Warnings in force in Kansas nowThe forecast where you are

The other tornadoes of May 7, 2002

20 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 72:20 AM CDTF0Calhoun, IL0.125
May 75:53 PM CDTF2Ford, KS1.9300$150,000
May 75:58 PM CDTF3Ford, KS4.0900
May 76:10 PM CDTF1Edwards, KS2.0225
May 76:40 PM CDTF1Ford, KS1.775
May 76:47 PM CDTF3Ford, KS8.51,800
May 76:50 PM CDTF1Edwards, KS5.5200
May 76:51 PM CDTF3Kiowa, KS10.06001$800,000
May 77:00 PM CDTF0Ford, KS4.9200
May 77:25 PM CDTF2Kiowa, KS19.6900$500,000
May 77:58 PM CDTF0Pratt, KS4.050
May 78:14 PM CDTF1Pratt, KS7.7150
May 78:34 PM CDTF2Pratt, KS22.01,800$20 million
May 78:50 PM CDTF0Nolan, TX0.520$1,000
May 79:30 PM CDTF0Kingman, KS0.5110
May 79:45 PM CDTF0Jones, TX0.220$1,000
May 79:45 PM CDTF0Taylor, TX0.220$1,000
May 711:38 PM CDTF0Kingman, KS0.2110
May 711:55 PM CDTF0Kingman, KS0.3110
May 712:11 AM CDTF0Kingman, KS0.3110

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.