High Plains Drifter


disclaimer:  "The meteorological views/forecast thinking expressed are those solely of the author of this blog
and do not necessarily represent those of official National Weather Service forecast products,
therefore read and enjoy at your own risk and edification!"

June 23, 2010

Chase Trip Day Six (June 22) Summary

Evan and I intercepted a fairly robust supercell which had its origins north of Cheyenne.  This storm moved northeast along the Hwy 85 corridor and was undercut by a fair amount of cool outflow from significant precipitation core to the northeast.  A new updraft emerged northeast of the original updraft and we were immediately caught behind and had to reposition.  We did so by blasting south to I-80 to Burns, WY then east along I-80 with an incredible view of the supercell cumulonimbus and cumuliform anvil with overturning convection.  Even from a distance we could tell that the storm was still riding its own outflow.  We drove east all the way to Potter, NE between Kimball and Sidney where we headed north to get closer once we caught up to the southeast side of the storm.  We stopped briefly about 7 miles north along Road 77 and photographed the amazing supercell updraft… probably the best supercell structure of the trip so far.  The convective overturning at anvil level was simply amazing with a well developed inflow tail to the north.  We then drove east on a very dirty farm road and had near-zero visibility in RFD dust as the wind was parallel to the road we were driving.  Fortunately, we finally got east of this dust, but by the time we finally reached Hwy 385 near Gurley, the storm was shrinking and becoming less interesting to pursue.  We drove down to Sidney and then back west again on I-80 to hopefully photograph some new storms forming northeast of Cheyenne, but north of the outflow boundary.  We enjoyed some nice evening photography along a farm road north of Bushnell, NE before we ended the chase and headed to Cheyenne for the night.

Start:  Goodland, KS
End:  Cheyenne, WY

Day Six mileage:  571 mi.
Chase trip mileage:  3022 mi.

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