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June 29, 2005 Tornadic supercell in Southern Minnesota

We headed out to Southern Minnesota looking to chase on this moderate risk day.  We hoped to catch something along the warm front in southeast Minnesota.  After lunch in La Crosse, WI we got an update from SPC which had two pockets of 15% tornado threat: one in southwest Minnesota and one in the southeast. Clouds in the eastern section of the risk meant that we would have to head west towards the other area of higher tornado threat.  We got into the clearing in south central Minnesota and headed west for another 30 miles when we found an isolated supercell.  There was very weak weather radio coverage when we first saw the storm so it was difficult to be sure of what was going on.  I heard a brief report of a severe warning from a weak weather radio signal so we figured this was the storm we were looking for.

We headed north then west into cottonwood county where we passed through the town of Windom, heading north on state HWY 71 we encountered tornado #1.  After driving north for 12 miles we headed east to get out in front of the precipitation.  We dropped south then west to get to the supercell's base.  We saw another funnel cloud before we moved back east.  We then repositioned and filmed the tornado that was about 6 miles west of Madelia.  Then we moved further northeast and watched numerous funnel clouds that were responsible for another tornado touchdown (no visible funnel all the way to the ground) that a different chaser got on film (funnel cloud with corresponding dust cloud).  Then we drove through Mankato and decided to head home.  On our way home we encountered the derecho that went through the La Crosse area with lots of lightning.

As we approached from the southeast Tornado #1 damaged a farm tornado #1 continues the funnel never visibly touched ground from our angle Our last good shot before it became rain wrapped
The base became round Persistent funnel cloud Intense updraft towers Flanking line with sunrays The main updraft was intense
Tornado #2 started as a tight funnel Soon the dust stirred up from the ground This is as big as the funnel got Dust working its way up Dust & funnel finally connnected
The condensation funnel evaporated A new rope briefly condenses A tornado was reported with one of these funnel clouds A tornado was reported with one of these funnel clouds A tornado was reported with one of these funnel clouds

SPC Storm data on this event

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