Tornadoes · United States · Kansas · 2011

EF0 tornado, Moundridge, Kansas, July 2, 2011

This EF0 tornado ran 0.6 miles across McPherson County on July 2, 2011, touching down at 7:03 PM CDT and reaching 50 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. EF065 to 85 mphthis tornado

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

  2. EF186 to 110 mph

    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.

The record

Rating
EF0
Date
July 2, 2011
Touchdown
7:03 PM CDT (00:03 UTC)
Lifted
7:07 PM CDT (00:07 UTC)
On the ground
4 minutes
Path length
0.6 miles (0.9 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
County
McPherson County
Touchdown point
38.177, -97.536
Lift-off point
38.183, -97.529
Record number
1107021803-01

What the Weather Service recorded

Scattered strong to severe thunderstorms affected portions of central and south-central Kansas generally west of the Flint Hills during the late afternoon and evening hours on the 2nd, in response to a weak cold front approaching from the north. The more notable reports include golfball to tennis ball size hail in Ellsworth, and winds estimated around 70 mph north of Kanopolis State Park.

A very thin rope like tornado touched down briefly. The tornado may also be considered a landspout. This can be attributed to the length of time the tornado was on the ground versus the distance it traveled.

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. One was issued for the county at another hour that day.

Issued (UTC)ExpiredProductOffice
23:55 UTC00:30 UTCSevere Thunderstorm WarningICT
00:06 UTC00:30 UTCTornado WarningICT
00:25 UTC00:44 UTCSevere Thunderstorm WarningICT
01:01 UTC01:45 UTCSevere Thunderstorm WarningICT
04:00 UTC07:55 UTCSevere Thunderstorm WatchICT

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 19:30 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 radar

The Wichita radar (KICT), 59 km away, was scanning. The volume nearest the touchdown began at 00:00 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.

What was reported nearby

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

Time (UTC)ReportWhereCountyRemark
00:03 UTCTORNADO1 Nw MoundridgeMcpherson, KSROPE TYPE TORNADO.
01:20 UTCHAIL 0.755 S MarquetteMcpherson, KS50 MPH WINDS.

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

This ground now

The live radar over the trackEvery 2011 tornado in KansasEvery tornado in Kansas since 1950Warnings in force in Kansas nowThe forecast where you are

The other tornadoes of July 2, 2011

6 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 25:11 PM MDTEF0Washington, CO0.150
July 25:38 PM MDTEF0Washington, CO0.150
July 26:47 PM MDTEF0Goshen, WY0.025
July 27:00 PM MDTEF0Goshen, WY0.125
July 27:18 PM MDTEF0Goshen, WY0.020
July 27:37 PM MDTEF0Goshen, WY0.020

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.