EF1 tornado, Kirchhayn, Wisconsin, June 3, 2007

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 mphthis tornado

   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.

Rating

EF1

Date

June 3, 2007

Touchdown

2:10 PM CDT (19:10 UTC)

Lifted

2:20 PM CDT (19:20 UTC)

On the ground

10 minutes

Path length

0.5 miles (0.7 km)

Path width

50 yards (46 m)

Deaths

0

Injuries

0

Property damage

$25,000

County

Washington County

Touchdown point

43.337, -88.072

Lift-off point

43.343, -88.073

Record number

0706031310-01

For the 3rd consecutive day, severe weather struck parts of south-central and southeast Wisconsin on June 3rd in the form of an isolated tornado, downburst winds (toppled trees), and a flash flood. On this day, a cut-off low pressure drifted slowly across Wisconsin, after being found back in the Dakotas on June 1st. Spiral bands of convection continued to become enhanced during the daytime heating period.

A weak tornado struck a rural cluster of homes about 2.9 miles north-northeast (82 degrees) of Kuchhayn, or 4.5 miles east of Jackson, or about 0.4 miles southeast (135 degrees) of the intersection of CTH M and Cedar Creek Rd., and then headed north and crossed Cedar Creek Rd. It dissipated just south of Cedar Creek, or about 3.3 north-northeast (72 degrees) of Kirchhayn. Two homes on Highview Dr. sustained slight damage to roof shingles, gutters, and siding. A boat and shed were also damaged. About 30 trees sustained damage, and 6 were uprooted. Average path width was about 25 yards. The specific lat/lon data is: N43.3370 W88.07220 for the start and N43.34350 W88.07290 for the end point. DI #2 (FR12), DOD2. Estimated wind speeds 90 mph.

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

6 minutes of warning. NWS MKX issued a tornado warning for this county at 19:04 UTC, 6 minutes before the tornado touched down, in force until 19:45 UTC.

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 Storm Prediction Center had this point in a General Thunderstorms Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 16:34 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 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.

The Milwaukee radar (KMKX), 57 km away, was scanning. The volume nearest the touchdown began at 19:11 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.

Local storm reports within 60 km of the path, in the three hours either side.

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

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

12 more were confirmed in the United States that day.

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.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.