Tornadoes · United States · Kansas · 2016

EF0 tornado, Cimarron Arpt, Kansas, August 29, 2016

This EF0 tornado ran 0.2 miles across Gray County on August 29, 2016, touching down at 6:12 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
August 29, 2016
Touchdown
6:12 PM CDT (23:12 UTC)
Lifted
6:20 PM CDT (23:20 UTC)
On the ground
8 minutes
Path length
0.2 miles (0.4 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
County
Gray County
Touchdown point
37.830, -100.300
Lift-off point
37.830, -100.296
Record number
1608291712-01

What the Weather Service recorded

A weak landspout tornado was observed by many people, including a pilot flying by.

A landspout developed and moved slowly across a field doing no damage. Numerous folks observed it as did a pilot flying by.

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.

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 19:43 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), 12:00Z

11.2 hours before the tornado, 36 km from the path. August 29, 2016.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2016-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 565 joules per kilogram, CIN -59, lifted condensation level 863 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 12:00Z on 2016-08-29The 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 -20 square meters per square second, 0 to 6 km bulk shear 11 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
565 J/kg
Mixed-layer CIN
-59 J/kg
Surface CAPE
555 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
11 kt
0-1 km bulk shear
12 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.3 K/km

Open this sounding in Storm Lab

Dodge City, (KDDC), 00:00Z

0.8 hours after it, 36 km from the path. August 30, 2016.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 00:00Z on 2016-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 172 joules per kilogram, CIN -47, lifted condensation level 1072 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 2016-08-30The 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 13 square meters per square second, 0 to 6 km bulk shear 21 knots.1939Sfc1 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
172 J/kg
Mixed-layer CIN
-47 J/kg
Surface CAPE
1401 J/kg
Mixed-layer LCL
1072 m above ground
0-6 km bulk shear
21 kt
0-1 km bulk shear
6 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1
0-3 km lapse rate
6.7 K/km

Open this sounding in Storm Lab

The surface observations

Dodge City (DDC), 30 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
21:20 UTC0° 0 kt1022.4
21:25 UTC0° 0 kt1022.4
21:40 UTC0° 0 kt1022.4
21:50 UTC50° 3 kt1022.4
21:52 UTC776840° 4 kt1022.4
22:00 UTC100° 4 kt1022.4
22:05 UTC80° 6 kt1022.4
22:10 UTC90° 5 kt1022.4
22:20 UTC100° 6 kt1022.4
22:25 UTC110° 6 kt1022.4
22:30 UTC100° 5 kt1022.4
22:35 UTC100° 4 kt1022
22:40 UTC110° 4 kt1022
22:50 UTC100° 3 kt1022
22:52 UTC7768130° 6 kt1022
22:55 UTC110° 3 kt1022
23:10 UTC120° 4 kt1022
23:15 UTC130° 4 kt1022
23:20 UTC110° 5 kt1022
23:35 UTC140° 5 kt1022
23:40 UTC110° 6 kt1022.4
23:52 UTC7666100° 6 kt1022.4
23:55 UTC100° 6 kt1022.4
00:00 UTC100° 5 kt1022.4
00:15 UTC90° 7 kt1022.4
00:20 UTC70° 6 kt1022
00:52 UTC726970° 8 kt1022

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

The radar

The Dodge City radar (KDDC), 30 km away, was scanning. The volume nearest the touchdown began at 23:13 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
23:15 UTCFUNNEL CLOUD7 Ne CimarronGray, KSMULTIPLE REPORTS WERE RECEIVED OF A FUNNEL CLOUD AND POSSIBLE BRIEF TORNADO, INCLUDING FROM A PILOT REPORT.
23:15 UTCTORNADO3 Ene CimarronGray, KSA SMALL LANDSPOUT TORNADO OCCURRED, BASED ON A MORE DETAILED SOCIAL MEDIA ACCOUNT. THE TORNADO LASTED 5 TO 10 MINUTES AND OCCURRED A FEW MILES NORTHEAST OF CIMARRON. THE REPORTER MENTIONED THERE IS VIDEO OR PHOTOS OF IT.

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

This ground now

The live radar over the trackEvery 2016 tornado in KansasEvery tornado in Kansas since 1950Warnings in force in Kansas nowThe forecast where you are

The other tornadoes of August 29, 2016

1 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 292:31 PM CDTUnratedBriscoe, TX0.650

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.