EF1 tornado, Corning, Kansas, May 28, 2013

1. EF065 to 85 mph

   Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

2. EF186 to 110 mphthis tornado

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

3. EF2111 to 135 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. EF3136 to 165 mph

   Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

5. EF4166 to 200 mph

   Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

6. EF5over 200 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

EF1

Date

May 28, 2013

Touchdown

4:20 PM CDT (21:20 UTC)

Path length

0.0 miles (0.0 km)

Path width

50 yards (46 m)

Deaths

0

Injuries

0

County

Nemaha County

Touchdown point

39.653, -96.071

Lift-off point

39.653, -96.071

Record number

1305281520-01

9 damage points were recorded along this path by NWS TOP, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF3. The highest wind the damage implies is 152 mph.

• initial touchdown. Tree damage.
• Multiple small building destroyed - large metal building significantly damaged.
• Older home flattened. Vehicle rolled.
• significant home damage. multiple metal buildings removed. Heavy farm equipment tossed.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

Supercell Thunderstorms developed along a stationary boundary and produced large tornadoes during the afternoon and evening of May 28th 2013. 2 tornadoes occurred in Nemaha county Kansas and at least 1 violent long lived tornado occurred in Ottawa County Kansas. Amazingly no serious injuries and no fatalities were reported. Later that night slow moving storms dumped 5 to 10 inches of rain across parts of Brown and Nemaha counties in Kansas.

The resident of the EF-1 house south of the EF-3 farm described seeing several sub-tornadoes along with the main one. It appears that a smaller satellite tornado hit this location producing EF1 damage to the south of the main strong tornado. This would have been the 3rd tornado associated with this supercell.

Brief touchdown with house and tree damage. This was the last tornado associated with the supercell thunderstorm that produced the strong tornado to the west of Corning earlier.

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

23 minutes of warning. NWS TOP issued a tornado warning for this county at 20:57 UTC, 23 minutes before the tornado touched down, in force until 21:30 UTC.

The county was under a tornado watch, issued at 19:29 UTC and running to 02:54 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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:38 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.

The Topeka radar (KTWX), 74 km away, was scanning. The volume nearest the touchdown began at 21:19 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 2013 tornado in KansasEvery tornado in Kansas since 1950Warnings in force in Kansas nowThe forecast where you are

24 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.