Tornadoes · United States · Missouri · 2007

EF0 tornado, Lamar, Missouri, June 10, 2007

This EF0 tornado ran 0.5 miles across Barton County on June 10, 2007, touching down at 5:08 PM CDT and reaching 200 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 10, 2007
Touchdown
5:08 PM CDT (22:08 UTC)
Lifted
5:10 PM CDT (22:10 UTC)
On the ground
2 minutes
Path length
0.5 miles (0.8 km)
Path width
200 yards (183 m)
Deaths
0
Injuries
0
County
Barton County
Touchdown point
37.490, -94.280
Lift-off point
37.490, -94.280
Record number
0706101608-01

What the Weather Service recorded

Several episodes of heavy rain occurred during the period from June 10th through the morning of the 12th over mainly sections of southwest Missouri. The Spring River Basin was impacted the most causing significant flooding along the river. A USGS DCP rain guage in Waco measured nearly 12 inches in a 24 hour period from the 11th into the 12th. A few homes were flooded near the intersection of the Spring River and Highway 171.

A National Weather Service storm servey revealed that an EF-0 tornado touched down on the southwest corner of Lamar Lake. Damage to several trees occurred and wind speeds were estimated at 80 mph.

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

The warnings

60 minutes of warning. NWS SGF issued a tornado warning for this county at 21:08 UTC, 60 minutes before the tornado touched down, in force until 22:15 UTC.

The county was under a tornado watch, issued at 21:35 UTC and running to 03:42 UTC.

Issued (UTC)ExpiredProductOffice
21:08 UTC22:15 UTCTornado WarningSGF
21:35 UTC03:42 UTCTornado WatchSGF
21:49 UTC17:00 UTCFlash Flood WarningSGF
22:29 UTC23:30 UTCSevere Thunderstorm WarningSGF
03:00 UTC18:00 UTCFlash Flood WatchSGF

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 20:01 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

10.1 hours before the tornado, 78 km from the path. June 10, 2007.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2007-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1180 joules per kilogram, CIN -66, lifted condensation level 1117 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 2007-06-10The 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 -7 square meters per square second, 0 to 6 km bulk shear 14 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
1180 J/kg
Mixed-layer CIN
-66 J/kg
Surface CAPE
1166 J/kg
Mixed-layer LCL
1117 m above ground
0-6 km bulk shear
14 kt
0-1 km bulk shear
16 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

Springfield, MO (KSGF), 00:00Z

1.9 hours after it, 78 km from the path. June 11, 2007.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2007-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 127 joules per kilogram, CIN -183, lifted condensation level 884 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 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 2007-06-11The 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 66 square meters per square second, 0 to 6 km bulk shear 41 knots.193958Sfc1 km3 km6 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
127 J/kg
Mixed-layer CIN
-183 J/kg
Surface CAPE
131 J/kg
Mixed-layer LCL
884 m above ground
0-6 km bulk shear
41 kt
0-1 km bulk shear
11 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2
0-3 km lapse rate
5.3 K/km

Open this sounding in Storm Lab

The radar

The Springfield radar (KSGF), 83 km away, was scanning. The volume nearest the touchdown began at 22:06 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
21:30 UTCFUNNEL CLOUD8 Nw LamarBarton, MO
21:37 UTCHAIL 1.75LiberalBarton, MO
21:45 UTCFLASH FLOOD3 W LiberalBarton, MOK HIGHWAY WEST OF LIBERAL UNDER WATER
22:05 UTCHAIL 1AvillaJasper, MO
22:08 UTCTORNADOLamarBarton, MOA NATIONAL WEATHER SERVICE STORM SURVEY REVEALED THAT AN EF-0 TORNADO TOUCHED DOWN ON THE SOUTHWEST CORNER OF LAMAR LAKE. WIND SPEEDS WERE ESTIMATED AT 80 MPH...AND MAINLY TREE DAMAGE WAS OBSERVED WITHIN THE DAMAGE PATH.
22:15 UTCHAIL 2.75NashvilleBarton, MO
22:26 UTCTORNADO2 Ne AsburyJasper, MOTORNADO REPORTED AT PINE ROAD AND 290 ABOUT 2 MILES NORTHEAST OF ASBURY

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 10, 2007

1 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 105:25 PM CDTEF0Cherokee, KS0.150

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.