(11 May 2011)
* *  Mike Umscheid PHOTOGRAPHY & STORM CHASE BLOG   * *


About This Shoot
Date: 11 May 2011
Location: Northeast Colorado into northwest Kansas from Vona, CO to Oberlin, KS
Shoot Type: Storm Chase
Rating:
Synopsis:
Several marginal supercell storms formed near an upper low first over northeastern Colorado along I-70. Other storms formed farther to the east just north of I-70 from Atwood to Oberlin. None of the storms were tornadic given close proximity to cool, stable northeast winds. Some of the cumulonimbus structure was impressive on the backside of the Oberlin, KS storm just after sunset.

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Preliminary Storm Reports from 11 May 2011


1630 UTC SPC Products from 11 May 2011


Categorical Convective Outlook

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Evening Meteorological Charts from 11 May 2011


250mb Chart

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Surface Chart

11 May 2011


Thu, 12 May 2011 09:32:09 -0500
Storm Chase Summary May 11 -- Vona to Burlington, CO storms
Summary & Images (part 1)
Vona to Burlington, CO storms early in the chase. The Burlington
supercell was more impressive as we drove right under it along I-70
then briefly photographed it from the east along I-70 (image at
left). We continued east to Colby after this.

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(click on thumbnails for pop-up of larger images)

Thu, 12 May 2011 09:35:08 -0500
Storm Chase Summary May 11 -- Atwood, KS storm
Summary & Images (part 2)
After the Burlington, CO supercell, we continued east to Colby and
north to Atwood catching that marginal supercell storm from the south.
We sat at a location about 6 miles east of town and photographed the
storm for about 15 to 20 minutes:

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(click on thumbnails for pop-up of larger images)

Thu, 12 May 2011 09:38:16 -0500
Storm Chase Summary May 11 -- Oberlin storm after sunset
Summary & Images (part 3)
We intercepted another marginally severe storm near Oberlin to
conclude the May 11 chase. We photographed this storm from along
Highway 36 as well. We let the storm go by to the north and this
yielded impressive view of the convection on the backside of the
storm. This was quite photogenic. We then concluded the chase at
Oberlin and headed to WaKeeney, KS for the night again.

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(click on thumbnails for pop-up of larger images)

Wed, 11 May 2011 20:38:52 -0600
Backside storm structure nice! Near Oberlin ks
  
(click on thumbnail for pop-up of larger image)

Wed, 11 May 2011 18:57:38 -0500
Heading east to Colby/Hill City to intercept evening dryline storms... Not a whole lot of success chasing cold pool activity along I-70 in eastern CO.
We did manage to drive through two hail storms... one was south of
Vona, CO where hail covered the road and the temperature on the car
thermometer dipped down to 39 degrees! The ambient temperature was
already in the upper 40s near Vona where that tornado-warned storm was
earlier this afternoon along I-70 area. Didn't see much with that,
but it had a nice base for the longest time with continued
back-building. After that, we bailed east as the far most western
storm became severely outflow dominant with a cold air push. We then
headed east on I-70 and drove through the Burlington Supercell as it
crossed I-70. We stopped briefly along the interstate to photograph
the structure from near the Colorado border. It did have a wall
cloud/lowering, but nothing much more. We are now driving east toward
Colby and then likely northeast from there to intercept cells forming
along the dryline in northern Gove County... if they hold together.

Wed, 11 May 2011 17:18:36 -0600
Burlington supercell along I70
  
(click on thumbnail for pop-up of larger image)

Wed, 11 May 2011 16:17:37 -0600
Near vona Colorado
  
(click on thumbnail for pop-up of larger image)