Tornadoes · United States · Kansas · 2002

F0 tornado, Liberal, Kansas, July 10, 2002

This F0 tornado ran 0.3 miles across Seward County on July 10, 2002, touching down at 10:49 PM CDT and reaching 25 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
July 10, 2002
Touchdown
10:49 PM CDT (03:49 UTC)
Path length
0.3 miles (0.5 km)
Path width
25 yards (23 m)
Deaths
0
Injuries
0
County
Seward County
Touchdown point
37.030, -100.850
Lift-off point
37.030, -100.850
Record number
226

What the Weather Service recorded

A brief tornado occurred in an open pasture.

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.

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 General Thunderstorms Risk. The outlook in force was issued at 00:07 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.

What forecasters said that day

The local office's own words before the tornado touched down, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Dodge City, KS wrote its last area forecast discussion before the tornado touched down at Jul 10, 2:45 PM CDT, 8 hours 4 minutes earlier.

Area forecast discussion, Jul 10, 2:45 PM CDT, 8 hours 4 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DODGE CITY KS
245 PM CDT WED JUL 10 2002

DAYS 1-2...

THE UPPER LOW WAS STARTING TO DIG DOWN THE EASTERN PLAINS TODAY,
WITH A PREFRONTAL TROUGH IN SOUTHERN KS, AND THE TRUE COLD FRONT IN
NORTHWEST KS. ANOTHER STRONGER COLD FRONT WAS MOVING INTO NORTHEAST
SOUTH DAKOTA. THE SCENARIO WE ENVISION IS FOR STORMS TO DEVELOP
ALONG THE PREFRONTAL TROUGH THIS AFTERNOON AND THEN MOVE SOUTH INTO
OKLAHOMA LATER THIS EVENING. OVERNIGHT, A FEW MORE STORMS COULD
DEVELOP ALONG THE TRUE FRONT AS IT STARTS TO MOVE TROUGH CENTRAL/SW
KS. TEMPS SHOULD BE A FEW DEGREES COOLER THURSDAY BEHIND THE LEADING
FRONT. EVEN COOLER AIR WILL MOVE IN FRIDAY. GOING FCST SEEMS
CONSISTENT WITH THE ABOVE THINKING, SO MAJOR CHANGES ARE NOT
ANTICIPATED. THE ONLY REAL CHANGES WILL BE TO KEEP POPS GOING ALL
NIGHT TONIGHT AND NUDGE TEMPS DOWN A COUPLE DEGREES FOR FRIDAY.

DAYS 3-7...
MODELS REMAIN CONSISTENT WITH DEVELOPING A ERN CONUS TROF OVER THE
WEEKEND AND AMPLIFYING OUR WESTERN CONUS RIDGE. ON MONDAY A
UPPER LOW OVER THE LOWER MISSISSIPPI VALLEY STARTS TO SLIDE BACK
WESTWARD TOWARDS OK/TX. THE 12Z AVN WAS EVEN FURTHER WEST WITH THIS
LOW BY 12Z MONDAY THAN THE MRF/ECMWF AND IF VERIFIED WOULD RETARD
THE WARMUP AND POSSIBLY BRING A SLT CHANCE FOR PCPN TO OUR ERN CWA.
AT THIS TIME CONFIDENCE WITH THIS FEATURE IS LOW BUT GIVEN THE
PREVIOUS FORECAST WAS TRENDING TOWARDS SLT CHC POPS LATE TUESDAY
HAVE OPTED TO LEAVE MENTION OF LOW POPS IN AT THIS TIME. AS FOR
TEMPS WILL CONTINUE WITH PERSISTENCE AND WARM TEMPS BACK INTO THE
90S THROUGH THE FIRST OF THE WEEK BUT WILL TRIM A FEW DEGREES OFF
THE ERN 1/2 OF THE CWA.

FINCH/BURGERT

PRELIMINARY GUIDANCE FOR COORDINATION ONLY. OFFICIAL FORECASTS ARE
CONTAINED WITHIN THE DODGE CITY ZONE FORECAST.

DDC   65  92  63  88 /  30  10   0   0
GCK   65  90  60  89 /  20  10   0   0
EHA   64  90  60  89 /  30  10   0   0
LBL   65  92  62  90 /  30  10   0   0
HYS   64  89  60  88 /  20  10   0   0
P28   70  94  64  90 /  40  20   0   0

.DDC...NONE.

In the hours before

Local storm report, Jul 10, 7:09 PM CDT, 3 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DODGE CITY KS
709 PM CDT WED JUL 10 2002

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0545 PM    RADIUM                    KS   1.00 IN HAIL
07/10/02   STAFFORD                       REPORTED BY TRAINED
                                          SPOTTER

0605 PM    4SE LARNED                KS   0.88 IN HAIL
07/10/02   PAWNEE                         ALSO EST WIND SPEED 50 TO
                                          65 MPH. REPORTED BY
                                          PUBLIC

0618 PM    5SE LARNED                KS   0.75 IN HAIL
07/10/02   PAWNEE                         REPORTED BY PUBLIC

RB

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

3.8 hours before the tornado, 118 km from the path. July 11, 2002.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 00:00Z on 2002-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 933 joules per kilogram, CIN -24, lifted condensation level 2795 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, Dodge City, at 00:00Z on 2002-07-11The 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 16 square meters per square second, 0 to 6 km bulk shear 22 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
933 J/kg
Mixed-layer CIN
-24 J/kg
Surface CAPE
1956 J/kg
Mixed-layer LCL
2795 m above ground
0-6 km bulk shear
22 kt
0-1 km bulk shear
3 kt
0-1 km storm-relative helicity
16 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
9.5 K/km

Open this sounding in Storm Lab

Dodge City, (KDDC), 12:00Z

8.2 hours after it, 118 km from the path. July 11, 2002.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2002-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 534 joules per kilogram, CIN -122, lifted condensation level 936 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, Dodge City, at 12:00Z on 2002-07-11The 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 40 square meters per square second, 0 to 6 km bulk shear 26 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
534 J/kg
Mixed-layer CIN
-122 J/kg
Surface CAPE
502 J/kg
Mixed-layer LCL
936 m above ground
0-6 km bulk shear
26 kt
0-1 km bulk shear
10 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.9 K/km

Open this sounding in Storm Lab

The radar

The Dodge City radar (KDDC), 113 km away, was scanning. The volume nearest the touchdown began at 03:49 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 July 10, 2002

2 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 1012:50 PM CDTF0Marshall, KY0.510$30,000
July 108:07 PM CDTF0Jackson, MN0.650

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.