Tornadoes · United States · Colorado · 2008

EF0 tornado, Platner to Akron, Colorado, June 26, 2008

From Platner to Akron, this EF0 tornado ran 0.1 miles across Washington County on June 26, 2008, touching down at 4:00 PM MDT 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
June 26, 2008
Touchdown
4:00 PM MDT (22:00 UTC)
Path length
0.1 miles (0.2 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
County
Washington County
Touchdown point
40.093, -103.100
Lift-off point
40.093, -103.100
Record number
0806261600-01

What the Weather Service recorded

Lightning sparked a fire east of Guffey, in Park County. The combination of dry conditions and gusty winds allowed the fire to spread. It eventually consumed 1,115 acres. A shed and a camper trailer were also lost in the blaze. ||Severe thunderstorms produced several small landspout tornadoes in Washington County, and intense thunderstorm winds in Elbert County. In Weld County near Frederick, strong winds from a dry microburst snapped three utility poles, and downed electrical lines. As a result, a small fire was started near Interstate 25 and State Highway 52. The fire damaged irrigation equipment in a nearby field and some power poles.

A small tornado touched down but did no damage.

A small tornado touched down briefly but did no damage.

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

The warnings

16 minutes of warning. NWS BOU issued a tornado warning for this county at 21:44 UTC, 16 minutes before the tornado touched down, in force until 22:30 UTC.

Issued (UTC)ExpiredProductOffice
21:44 UTC22:30 UTCTornado WarningBOU

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. The outlook in force was issued at 19:59 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), 12:00Z

10.0 hours before the tornado, 27 km from the path. June 26, 2008.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2008-06-26Temperature 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 -85190, lifted condensation level 2801 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 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 2008-06-26The 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 57 square meters per square second, 0 to 6 km bulk shear 21 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
0 J/kg
Mixed-layer CIN
-85190 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
2801 m above ground
0-6 km bulk shear
21 kt
0-1 km bulk shear
9 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.5 K/km

Open this sounding in Storm Lab

Denver, CO (KDNR), 00:00Z

2.0 hours after it, 27 km from the path. June 27, 2008.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2008-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 10 joules per kilogram, CIN -82, lifted condensation level 4020 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 00:00Z on 2008-06-27The 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 -26 square meters per square second, 0 to 6 km bulk shear 40 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
10 J/kg
Mixed-layer CIN
-82 J/kg
Surface CAPE
248 J/kg
Mixed-layer LCL
4020 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
5 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
10.3 K/km

Open this sounding in Storm Lab

The surface observations

Akron/Washington Co (AKO), 14 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
20:53 UTC8940170° 4 kt1013.2
21:16 UTC82.442.8200° 15 kt211013.2-TSRA
21:28 UTC78.846.4210° 16 kt261012.9VCTS -RA
21:39 UTC80.644.6180° 15 kt1012.5VCTS
21:53 UTC8143190° 9 kt261013.2VCTS
22:05 UTC78.846.4170° 11 kt201013.2VCTS -RA
22:33 UTC71.651.8170° 18 kt1013.5-RA
22:53 UTC7448160° 15 kt1013.5
23:53 UTC7447100° 10 kt181013.2

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

The radar

The Denver radar (KFTG), 128 km away, was scanning. The volume nearest the touchdown began at 21:58 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
21:38 UTCTORNADO5 S PlatnerWashington, CO
21:47 UTCTORNADO7 S PlatnerWashington, CODURATION WAS 2 MINUTES.
22:20 UTCTORNADO3 Nw YumaYuma, COYUMA POLICE REPORTED LANDSPOUT TORNADO APPROXIMATELY 3 MILES NORTHWEST OF YUMA.
22:42 UTCTORNADO5 N EckleyYuma, COLAW ENFORCEMENT REPORTED BRIEF LANDSPOUT TORNADO IN AN OPEN FIELD.

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

This ground now

The live radar over the trackEvery 2008 tornado in ColoradoEvery tornado in Colorado since 1950Warnings in force in Colorado nowThe forecast where you are

The other tornadoes of June 26, 2008

7 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 263:38 PM MDTEF0Washington, CO0.150
June 264:20 PM MDTEF0Yuma, CO0.325
June 266:15 PM MDTEF0Cherry, NE0.220$3,000
June 266:45 PM MDTEF0Hamilton, KS0.950
June 267:10 PM MDTEF0Dewey, SD1.2100
June 267:40 PM MDTEF0Dewey, SD0.350
June 267:54 PM MDTEF0Dewey, SD0.250

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.