Tornado confirmed in Rock County last night

rockcotornadoFrom the Milwaukee office of the National Weather Service – A single thunderstorm cell developed in Rock county Tuesday evening producing an EF0 landspout tornado. A damage survey and radar images indicate the tornado touched down at approximately 8:10pm. The first report of a funnel cloud was recieved at 7:55 pm from a pilot flying into the Janesville airport. Subsequent funnel and tornado reports were recieved from the Janesville aiport tower, trained spotters and the public. The tornado produced minimal damage around Clear Lake. A screen porch including metal foundation was flipped over a trailer just southeast of Clear Lake. Some tree and powerline damage was also observed mostly southeast of Clear Lake.

This storm was very small in size and the only one in southern Wisconsin Tuesday evening. The first funnel cloud reports came in just 15 minutes after the cell developed. It weakened and the cell dissipated about half an hour later.

A landspout tornado is one that is not associated with a broad area of rotation known as a mesocyclone. Landspout tornadoes are normally smaller and weaker than the average supercell tornado.

This metar report was recieved from the Janesville airport at 8pm. It’s pretty rare for airport observers to see and report a tornado in their official observations.

SPECI KJVL 240100Z COR VRB03KT 10SM +FCRA FEW055CB BKN180 28/23 A2988 RMK TORNADO N MOV S

Click here for an animated radar of the storm.

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Posted under tornado

This post was written by qni_it on June 24, 2009

2 Comments so far

  1. Renee June 24, 2009 6:57 PM

    Good call, WI Weather Buff 🙂

  2. WI Weather Buff June 24, 2009 11:30 PM

    Gee, thx Renee! 🙂

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