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June 7, 2005 Tornadic supercell in South Dakota

    Moderate risk in Central and Eastern South Dakota led to a spectacular supercell moving off the Badlands.  The storm produced two tornadoes, both were very brief and difficult to photograph because we were not directly under the storm. The supercell moved northeast until it was absorbed into a squall line in West Central South Dakota.

   The morning forecast looked as though things would hang back further to the west if the cap even broke at all.  By evening it was time to go West and try to find where the triple point ahead of where the surface low was.  There we found an isolated Supercell in the early stages of development.

We started the day in Watertown and began drifting southwest as the day progressed.  After a late lunch in Mitchell and a data stop where we found out that there was a tornado watch to our West we started heading West towards Chamberlain when we were passed by a Doppler on wheels, we kept up with them on the freeway and became part of a convoy of chasers that included 3 DOWs, the F250 and Roger Hill's tour group just to name a few.  At a gas station in Chamberlain we met the Chasers of the Ozarks.  After we got back on the road we went west towards the triple point of the low in southwest South Dakota.   The Storm produced two brief tornadoes before being absorbed into a squall line that came up from the West.

Supercell

Supercell with wall/funnel cloud beneath

Supercell continues to strengthen

Supercell continues to approach

Inflow tail going into the storm

Supercell continues to rotate Supercell continues to rotate Supercell continues to rotate
Supercell continues to rotate & get closer Updraft base with a lot of activity underneath Flat base with wall cloud Supercell base becomes striated

 SPC Storm report on this event

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