Tornadoes · United States · Missouri · 2007

EF0 tornado, Eudora, Missouri, June 30, 2007

This EF0 tornado ran 0.8 miles across Polk County on June 30, 2007, touching down at 1:40 PM CDT and reaching 50 yards wide. It killed nobody, and did $5,000 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
June 30, 2007
Touchdown
1:40 PM CDT (18:40 UTC)
Lifted
1:42 PM CDT (18:42 UTC)
On the ground
2 minutes
Path length
0.8 miles (1.2 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Property damage
$5,000
County
Polk County
Touchdown point
37.460, -93.576
Lift-off point
37.460, -93.576
Record number
0706301240-01

What the Weather Service recorded

A near tropical like airmass combined with unseasonably strong wind shear to produce organized thunderstorms across the Ozarks. Mostly flash flooding occurred in response to these storms, however, a few tornadoes also developed.

A National Weather Service storm survey revealed that a weak EF-0 tornado touched down in a rural area along County Road 36 just south of its intersection with Highway W. One barn was heavily damaged along with several trees.

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
18:25 UTC19:30 UTCSevere Thunderstorm WarningSGF
18:44 UTC20:00 UTCTornado WarningSGF
19:21 UTC01:00 UTCTornado WatchSGF
20:06 UTC02:00 UTCFlash Flood WarningSGF
20:12 UTC21:00 UTCTornado WarningSGF
21:02 UTC22:00 UTCTornado WarningSGF

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 16:12 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.

Springfield, MO (KSGF), 12:00Z

6.7 hours before the tornado, 65 km from the path. June 30, 2007.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2007-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 374 joules per kilogram, CIN -36, lifted condensation level 703 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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, Springfield, MO at 12:00Z on 2007-06-30The 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 100 square meters per square second, 0 to 6 km bulk shear 22 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
374 J/kg
Mixed-layer CIN
-36 J/kg
Surface CAPE
442 J/kg
Mixed-layer LCL
703 m above ground
0-6 km bulk shear
22 kt
0-1 km bulk shear
18 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

Springfield, MO (KSGF), 00:00Z

5.3 hours after it, 65 km from the path. July 1, 2007.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2007-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 262 joules per kilogram, CIN -39, lifted condensation level 803 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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, Springfield, MO at 00:00Z on 2007-07-01The 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 123 square meters per square second, 0 to 6 km bulk shear 28 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
262 J/kg
Mixed-layer CIN
-39 J/kg
Surface CAPE
195 J/kg
Mixed-layer LCL
803 m above ground
0-6 km bulk shear
28 kt
0-1 km bulk shear
19 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.2
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

The radar

The Springfield radar (KSGF), 29 km away, was scanning. The volume nearest the touchdown began at 18:39 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
18:40 UTCTORNADO5 N Walnut GrovePolk, MOTORNADO REPORTED ON THE GROUND. NO ADDITIONAL REPORTS AT THIS TIME
18:40 UTCTORNADOEudoraPolk, MOTORNADO REPORTED ON THE GROUND NEAR THE INTERSECTION OF HWY 215 AND 123.
18:44 UTCTORNADO 03 W EudoraPolk, MONWS SURVEY TEAM CONFIRMED THAT A TORNADO...RATED AS AN EF0... DESTROYED A BARN AND DAMAGED SEVERAL TREES. LENGTH WAS 3/4 MILE WITH A WIDTH OF 50 YARDS.
18:44 UTCTORNADO3 W EudoraPolk, MOBARN DESTROYED FROM TORNADO.
19:06 UTCTORNADO3 W EudoraPolk, MOTORNADO DAMAGE HAS BEEN RELAYED TO THE NATIONAL WEATHER SERVICE. THIS DAMAGE IS ALONG POLK CO ROAD 36 JUST SOUTH OF HIGHWAY W.
19:21 UTCTORNADO6 N EudoraPolk, MOBRIEF TORNADO TOUCHDOWN NEAR WICHER. NO DAMAGE REPORTED AT THIS TIME.
20:00 UTCTSTM WND DMGCave SpringsGreene, MOLARGE LIMB DOWN.
20:25 UTCTORNADO2 Sw OzarkChristian, MOPOSSIBLE BRIEF TOUCHDOWN.
20:30 UTCFLASH FLOOD6 E Walnut GroveGreene, MOFLOODING REPORTED ACROSS FARM ROAD 2 TWO MILES EAST OF Z HIGHWAY.
20:36 UTCFUNNEL CLOUD2 W OzarkChristian, MOFUNNEL CLOUD WITH POSSIBLE DEBRIS AT HWY 65 AND 14.
20:58 UTCFLASH FLOOD4 Nw OzarkChristian, MOSTREET FLOODING AND DITCHES FULL OF WATER NEAR HWYS MM AND CC
21:02 UTCFLASH FLOOD1 W BrightonPolk, MOHIGHWAY 13 AT HIGHWAY 215 WATER OVER THE ROAD AND IMPASSABLE TO MOTORISTS.
21:10 UTCTSTM WND DMGPleasant HopePolk, MOTREES DOWN.
21:11 UTCFUNNEL CLOUD1 N Pleasant HopePolk, MOTWO WALL CLOUDS REPORTED. ONE TO THE NORTH AND ONE TO THE SOUTHEAST OF TOWN.
21:20 UTCFLOOD5 W Golden CityBarton, MOALONG PORTIONS HWY 126 TWO FEET OF WATER ACROSS ROAD
21:38 UTCFUNNEL CLOUD6 E Pleasant HopeDallas, MOREPORTED NEAR HWY 215 AT POLK AND DALLAS COUNTY LINE

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

This ground now

The live radar over the trackEvery 2007 tornado in MissouriEvery tornado in Missouri since 1950Warnings in force in Missouri nowThe forecast where you are

The other tornadoes of June 30, 2007

2 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 303:25 PM CDTEF0Christian, MO0.150
June 305:40 PM CDTEF0Webster, MO0.150

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.