Tornadoes · United States · Kansas · 2012

EF0 tornado, Moundridge, Kansas, February 28, 2012

This EF0 tornado ran 2.3 miles across McPherson County on February 28, 2012, touching down at 7:17 PM CST and reaching 50 yards wide. It killed nobody, and did $15,000 of property damage.

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
February 28, 2012
Touchdown
7:17 PM CST (01:17 UTC)
Lifted
7:22 PM CST (01:22 UTC)
On the ground
5 minutes
Path length
2.3 miles (3.7 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Property damage
$15,000
County
McPherson County
Touchdown point
38.183, -97.510
Lift-off point
38.205, -97.480
Record number
1202281917-01

What the Weather Service recorded

A powerful storm system produced widespread severe weather across portions of central, south-central and southeast Kansas during the evening hours on the 28th. A handful of relatively weak, short-lived tornadoes affected portions of Reno and McPherson counties, producing some light to modest damage. Other portions of the area received locally very intense straight-line winds and large hail, with isolated locations receiving wind speeds ranging from 90 to 110 mph, and hail as large as baseballs. Especially hard hit was the community of Cherryvale in Montgomery county, as well as a large portion of Labette county. A handful of injuries occurred across the area.

Several power lines were downed south of Moundridge. As the storm moved to the northeast, it completely twisted highway signs at exit 48 on Interstate 135.

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

The warnings

19 minutes of warning. NWS ICT issued a tornado warning for this county at 00:58 UTC, 19 minutes before the tornado touched down, in force until 01:30 UTC.

The county was under a tornado watch, issued at 23:41 UTC and running to 02:15 UTC.

Issued (UTC)ExpiredProductOffice
22:37 UTC03:16 UTCWind AdvisoryICT
23:41 UTC02:15 UTCTornado WatchICT
00:58 UTC01:30 UTCTornado WarningICT
01:25 UTC01:36 UTCTornado WarningICT
17:00 UTC22:58 UTCRed Flag WarningICT

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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 01:44 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.

Lamont, OK (KLMN), 00:00Z

1.3 hours before the tornado, 175 km from the path. February 29, 2012.

Skew-T log-pSkew-T log-p diagram, Lamont, OK at 00:00Z on 2012-02-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 386 joules per kilogram, CIN -76, lifted condensation level 660 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, Lamont, OK at 00:00Z on 2012-02-29The 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 369 square meters per square second, 0 to 6 km bulk shear 77 knots.1939587897117Sfc1 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
386 J/kg
Mixed-layer CIN
-76 J/kg
Surface CAPE
449 J/kg
Mixed-layer LCL
660 m above ground
0-6 km bulk shear
77 kt
0-1 km bulk shear
28 kt
0-1 km storm-relative helicity
369 m²/s²
0-3 km storm-relative helicity
461 m²/s²
Significant tornado parameter
0.8
Supercell composite
2.3
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

Lamont, OK (KLMN), 12:00Z

10.7 hours after it, 175 km from the path. February 29, 2012.

Skew-T log-pSkew-T log-p diagram, Lamont, OK at 12:00Z on 2012-02-29Temperature 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 -77771, lifted condensation level 2612 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, Lamont, OK at 12:00Z on 2012-02-29The 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 -150 square meters per square second, 0 to 6 km bulk shear 83 knots.1939587897117136156Sfc1 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
-77771 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
2612 m above ground
0-6 km bulk shear
83 kt
0-1 km bulk shear
21 kt
0-1 km storm-relative helicity
-150 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.3 K/km

Open this sounding in Storm Lab

The radar

The Wichita radar (KICT), 60 km away, was scanning. The volume nearest the touchdown began at 01:18 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
00:43 UTCTORNADO6 Ssw HutchinsonReno, KSSTORM CHASER REPORTED A TORNADO LASTING ABOUT 5 MINUTES FROM 643 TO 648 PM.
01:17 UTCTSTM WND DMGMoundridgeMcpherson, KSTRAINED SPOTTER REPORTED TWO LARGE POST SIGNS TWISTED 22 DEGREES AND EXIT 48 ON INTERSTATE 135 ON THE NORTH END OF MOUNDRIDGE SEVERELY FRACTURED. OTHER WOODEN SIGN POSTS WERE SNAPPED OFF.
01:22 UTCTSTM WND GST 733 Nnw HesstonMcpherson, KS2 TO 4 INCH DIAMETER TREE LIMBS WERE DOWNED.
01:28 UTCHAIL 1.75N HillsboroMarion, KSSTORM SPOTTERS AND DEPUTIES REPORTING GOLF BALL SIZED HAIL AND WINDS APPROX 70MPH NORTH OF HILLSBORO ON K-15.
01:43 UTCTSTM WND GST 622 W BentonSedgwick, KS
01:50 UTCTSTM WND DMG6 Sw South HutchinsonReno, KSREPORTS OF MINOR DAMAGE TO A HOUSE, VEHICLES AND STOCK TRAILERS FLIPPED OVER. THERE WAS A REPORT OF A BRIEF TORNADO FROM A CITIZEN IN THAT AREA.
01:50 UTCHAIL 1.25Nw MarionMarion, KSAMATEUR RADIO MARION CO 1/2 DOLLAR SIZE HAIL ON THE NORTH SIDE OF MARION RESERVOIR.

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

This ground now

The live radar over the trackEvery 2012 tornado in KansasEvery tornado in Kansas since 1950Warnings in force in Kansas nowThe forecast where you are

The other tornadoes of February 28, 2012

12 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
February 284:13 PM CSTEF0Logan, NE3.020$10,000
February 285:28 PM CSTEF0Jewell, KS2.450$35,000
February 285:36 PM CSTEF0Cloud, KS1.875
February 286:05 PM CSTEF0Republic, KS6.1100
February 286:43 PM CSTEF0Reno, KS1.250$30,000
February 286:47 PM CSTEF0Reno, KS0.750
February 287:00 PM CSTEF0Greeley, NE0.325$50,000
February 289:02 PM CSTEF2Osage, KS5.4150112
February 2810:06 PM CSTEF1Douglas, KS4.8100
February 2810:52 PM CSTEF1Barton, MO16.0200$250,000
February 2811:26 PM CSTEF1Dade, MO18.4100$250,000
February 2811:58 PM CSTEF2Polk, MO9.5100112$650,000

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.