Tornadoes · United States · Kansas · 2005

F2 tornado, Ulysses, Kansas, May 11, 2005

This F2 tornado ran 13.2 miles across Grant County on May 11, 2005, touching down at 9:03 PM CDT and reaching 250 yards wide. It killed nobody, and did $350,000 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 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2113 to 157 mphthis tornado

    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
F2
Date
May 11, 2005
Touchdown
9:03 PM CDT (02:03 UTC)
Path length
13.2 miles (21.2 km)
Path width
250 yards (229 m)
Deaths
0
Injuries
0
Property damage
$350,000
County
Grant County
Touchdown point
37.600, -101.350
Lift-off point
37.730, -101.230
Record number
782

What the Weather Service recorded

This tornado traveled into Kearny county before roping out. At 2ne of Ulysses part of a barn roof was blown off and a large tree was uprooted. Several horses were slightly injured. Then at 5ne of Ulysses an abandoned mobile home was destroyed. At six miles northeast of Ulysses, two pivot sprinklers were mangled, large trees were snapped at the base and several power poles were destroyed. Several grain bins (full of wheat) were completely swept away and the grain was scattered for some distance. Remnants of the grain bins were not found in the local vicinity. Farther northeast along the track several more pivot sprinklers were destroyed. It is estimated that if this tornado had made a direct hit, it would have likely caused at least high-end F3 damage.

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

The warnings

15 minutes of warning. NWS DDC issued a tornado warning for this county at 01:48 UTC, 15 minutes before the tornado touched down, in force until 02:15 UTC.

Issued (UTC)ExpiredProductOffice
01:21 UTC02:00 UTCSevere Thunderstorm WarningDDC
01:48 UTC02:15 UTCTornado WarningDDC
02:12 UTC02:45 UTCTornado 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 01:08 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

2.1 hours before the tornado, 123 km from the path. May 12, 2005.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 00:00Z on 2005-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 2443 joules per kilogram, CIN -10, lifted condensation level 1347 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, Dodge City, at 00:00Z on 2005-05-12The 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 22 square meters per square second, 0 to 6 km bulk shear 20 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
2443 J/kg
Mixed-layer CIN
-10 J/kg
Surface CAPE
2757 J/kg
Mixed-layer LCL
1347 m above ground
0-6 km bulk shear
20 kt
0-1 km bulk shear
5 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2
0-3 km lapse rate
7.3 K/km

Open this sounding in Storm Lab

Dodge City, (KDDC), 12:00Z

9.9 hours after it, 123 km from the path. May 12, 2005.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2005-05-12Temperature 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 -57591, lifted condensation level 640 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 2005-05-12The 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 87 square meters per square second, 0 to 6 km bulk shear 60 knots.19395878Sfc1 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
-57591 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
640 m above ground
0-6 km bulk shear
60 kt
0-1 km bulk shear
24 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1
0-3 km lapse rate
2.7 K/km

Open this sounding in Storm Lab

The radar

The Dodge City radar (KDDC), 117 km away, was scanning. The volume nearest the touchdown began at 02:04 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 2005 tornado in KansasEvery tornado in Kansas since 1950Warnings in force in Kansas nowThe forecast where you are

The other tornadoes of May 11, 2005

12 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 113:50 PM CDTF0Hitchcock, NE0.325
May 113:54 PM MDTF0Yuma, CO0.00
May 114:55 PM CDTF1Frontier, NE2.050$50,000
May 115:15 PM MDTF0Dundy, NE0.325
May 115:34 PM MDTF0Dundy, NE0.325
May 116:35 PM CDTF0Adams, IL0.250
May 118:44 PM CDTF0Grant, KS0.530
May 118:48 PM CDTF0Grant, KS0.230
May 119:22 PM CDTF0Kearny, KS1.330
May 119:48 PM CDTF0Finney, KS0.215
May 1110:05 PM CDTF0Hall, NE0.130$120,000
May 1110:24 PM CDTF0Finney, KS0.215

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.