F1 tornado, Palco to Stockton, Kansas, June 9, 2005

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.

Rating

F1

Date

June 9, 2005

Touchdown

5:25 PM CDT (22:25 UTC)

Path length

9.0 miles (14.5 km)

Path width

60 yards (55 m)

Deaths

0

Injuries

0

Property damage

$300,000

County

Rooks County

Touchdown point

39.270, -99.470

Lift-off point

39.370, -99.370

Record number

836

A supercell thunderstorm produced a series of tornadoes in Rooks County, Kansas. The first tornado did minor damage north of Palco. The second and third tornadoes were actually on the ground at the same time for awhile. Two farmsteads were hit with a barn and other outbuildings destroyed. An electrical substation was destroyed southwest of Stockton. There were several storm chase groups on this storm to take pictures and video of the dual tornado experience. A little later, as the storm passed over Stockton, another tornado formed. An exterior wall was severely damaged on the recently refurbished theater in downtown Stockton. A large grain bin was destroyed at the elevator. There were several occurrences of tree damage and minor structural damage throughout town.

A brief tornado was reported by storm chasers near Palco. The tornado was on the ground long enough to snap some power poles north of town.

A tornado destroyed an electrical substation, several power poles and three outbuildings along its path through central Rooks County.

A tornado, the second of two tornadoes at the same time, destroyed a barn on a farm southwest of Stockton. Damage to the farmhouse included shingles, broken windows and other minor damages.

A tornado began near Stockton and skipped northeast through town, and eventually lifted a few miles northeast of town.

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

44 minutes of warning. NWS GID issued a tornado warning for this county at 21:41 UTC, 44 minutes before the tornado touched down, in force until 22:45 UTC.

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 Storm Prediction Center had this point in a Moderate Risk, with a 0.15 chance of a tornado within 25 miles. The outlook in force was issued at 21:04 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 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.

Hill_city (HLC), 36 km from the path, in the two hours either side.

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

The Grand Island radar (KUEX), 139 km away, was scanning. The volume nearest the touchdown began at 22:24 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.

Local storm reports within 60 km of the path, in the three hours either side.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

The live radar over the trackEvery 2005 tornado in KansasEvery tornado in Kansas since 1950Warnings in force in Kansas nowThe forecast where you are

36 more were confirmed in the United States that day.

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.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.