Tornadoes · United States · Colorado · 2019

Unrated tornado, Pritchett, Colorado, June 22, 2019

This Unrated tornado ran 0.1 miles across Baca County on June 22, 2019, touching down at 8:30 PM MDT and reaching 10 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 mph

    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. Unratedthis tornado

    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
Unrated
Date
June 22, 2019
Touchdown
8:30 PM MDT (02:30 UTC)
Lifted
8:32 PM MDT (02:32 UTC)
On the ground
2 minutes
Path length
0.1 miles (0.2 km)
Path width
10 yards (9 m)
Deaths
0
Injuries
0
County
Baca County
Touchdown point
37.630, -102.880
Lift-off point
37.630, -102.880
Record number
1906222030-01

What the Weather Service recorded

A broken line of strong to severe thunderstorms developed across southern Colorado and marched eastward during the late afternoon hours on June 22, 2019. A few supercells developed ahead of this broken line of storms producing very large destructive hail, damaging wind gusts, and a tornado. Las Animas and Baca Counties were the most impacted by these supercells late in the evening.

A brief tornado occurred north of Pritchett, CO in the late evening. Storm chaser relayed the report and noted no damage was seen. The location was estimated by radar couplet location. A storm survey was not conducted.

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

The warnings

15 minutes of warning. NWS PUB issued a tornado warning for this county at 02:15 UTC, 15 minutes before the tornado touched down, in force until 02:45 UTC.

The county was under a severe thunderstorm watch, issued at 23:47 UTC and running to 05:08 UTC.

Issued (UTC)ExpiredProductOffice
23:47 UTC05:08 UTCSevere Thunderstorm WatchPUB
01:27 UTC02:00 UTCSevere Thunderstorm WarningPUB
01:40 UTC02:15 UTCSevere Thunderstorm WarningPUB
02:15 UTC02:45 UTCTornado WarningPUB
02:17 UTC02:45 UTCSevere Thunderstorm WarningPUB
02:43 UTC03:15 UTCSevere Thunderstorm WarningPUB
02:46 UTC03:30 UTCSevere Thunderstorm WarningPUB
03:06 UTC03:30 UTCSevere Thunderstorm WarningPUB
03:22 UTC03:45 UTCSevere Thunderstorm WarningPUB
03:27 UTC04:00 UTCSevere Thunderstorm WarningPUB
03:55 UTC04:30 UTCSevere Thunderstorm WarningPUB
04:28 UTC05:00 UTCSevere Thunderstorm WarningPUB

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 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 00:52 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.

Denver, CO (KDNR), 00:00Z

2.5 hours before the tornado, 251 km from the path. June 23, 2019.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2019-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 194 joules per kilogram, CIN 0, lifted condensation level 1055 meters above ground. Wind barbs in knots down the right edge.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 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, Denver, CO at 00:00Z on 2019-06-23The 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 89 square meters per square second, 0 to 6 km bulk shear 51 knots.19395878Sfc1 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
194 J/kg
Mixed-layer CIN
0 J/kg
Surface CAPE
386 J/kg
Mixed-layer LCL
1055 m above ground
0-6 km bulk shear
51 kt
0-1 km bulk shear
13 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4
0-3 km lapse rate
7.6 K/km

Open this sounding in Storm Lab

Denver, CO (KDNR), 12:00Z

9.5 hours after it, 251 km from the path. June 23, 2019.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2019-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 300 joules per kilogram, CIN -49, lifted condensation level 1102 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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, Denver, CO at 12:00Z on 2019-06-23The 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 -45 square meters per square second, 0 to 6 km bulk shear 57 knots.1939587897Sfc1 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
300 J/kg
Mixed-layer CIN
-49 J/kg
Surface CAPE
84 J/kg
Mixed-layer LCL
1102 m above ground
0-6 km bulk shear
57 kt
0-1 km bulk shear
12 kt
0-1 km storm-relative helicity
-45 m²/s²
0-3 km storm-relative helicity
-40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
6.3 K/km

Open this sounding in Storm Lab

The radar

The Pueblo radar (KPUX), 147 km away, was scanning. The volume nearest the touchdown began at 02:31 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
01:28 UTCHAIL 210 Sse HigbeeLas Animas, CO
02:30 UTCTORNADO18 N PritchettBaca, CODELAYED REPORT. STORM CHASER WAS SOUTH OF PRITCHETT, COLORADO LOOKING NORTH. LOCATION WAS ESTIMATED BASED ON RADAR IMAGERY AND THE CHASERS INFORMATION. THE OBSERVED TORNADO WAS UNDER A TORNADO WARNING.
03:17 UTCTSTM WND GST 589 S SpringfieldBaca, COCORRECTS PREVIOUS TSTM WND GST REPORT FROM 9 S SPRINGFIELD. ASOS STATION KSPD.
03:17 UTCTSTM WND GST 599 S SpringfieldBaca, COASOS STATION KSPD.
03:25 UTCHAIL 1.75Two ButtesBaca, CO
03:58 UTCHAIL 25 Nnw CampoBaca, CO

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

This ground now

The live radar over the trackEvery 2019 tornado in ColoradoEvery tornado in Colorado since 1950Warnings in force in Colorado nowThe forecast where you are

The other tornadoes of June 22, 2019

3 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 227:10 PM MDTUnratedKimball, NE0.330
June 2210:43 PM CDTEF0Armstrong, TX2.550
June 2210:55 PM CDTEF0Armstrong, TX2.1200

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.