(12 August 2011)
* *  Mike Umscheid PHOTOGRAPHY & STORM CHASE BLOG   * *


About This Shoot
Date: 12 August 2011
Location: Southwest and South-central Kansas from Kinsley to Harper, KS
Shoot Type: Storm Chase
Rating:
Synopsis:
A fairly significant severe storm formed near Kinsley and morphed into a very impressive wind storm as it rolled southeast toward Greensburg and Pratt...and eventually Medicine Lodge and adjacent areas of northern Oklahoma. I managed to stay just ahead of this storm from Greensburg to Pratt, stopping briefly east of Pratt to photograph structure and again near Nashville, KS with a very ominous shelf cloud. After the storm passed, I photographed a fantastic sunset and dramatic sky just north of Harper, KS

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Preliminary Storm Reports from 12 August 2011


1630 UTC SPC Products from 12 August 2011


Categorical Convective Outlook

Probabilistic Tornado Outlook

Probabilistic Hail Outlook

Probabilistic Wind Outlook

Evening Meteorological Charts from 12 August 2011


250mb Chart

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Surface Chart

12 August 2011


Short videos from my HTC smart phone during 12 August 2011 chase in Southwest Kansas:

Severe storms organizing near Offerle, KS, including a rainfoot to my north:


Severe storms organizing west of Kinsley, KS:


Along Highway 54 just west of Pratt as a menacing severe storm approaches with 60-80mph winds about to come into Pratt:


A likely vortex of some sort... this feature was in the cyclonic shear area on the north side of the significant straight line wind event occurring farther to the south. Radar did reveal weak low level rotational signature near here... more of a "bookend vortex" type signature than anything else:


Near Spivey, KS ahead of a menacing shelf cloud leading 60-70mph winds:

Sun, 14 Aug 2011 00:51:27 -0500
The very menacing leading edge of 60 to 70 mph winds associated with a severe storm approaching the town of Nashville, KS on 12 August 2011
  
(click on thumbnail for pop-up of larger image)

Sat, 13 Aug 2011 23:33:52 -0500
-Broken Bow- Virga and light rain followed severe storms at sunset near Harper, KS, yielding a spectacular rainbow that was visually breaking apart by the virga
  
(click on thumbnail for pop-up of larger image)

Sat, 13 Aug 2011 01:14:36 -0500
-Red Sky Falling- An incredible red sky following severe storms in Harper County, KS on 12 August 2011
  
(click on thumbnail for pop-up of larger image)

Fri, 12 Aug 2011 20:38:15 -0500
chase update 835pm. Not enough superlatives in the english language to describe the sky at sunset in Harper County, KS. Will just let the images speak.. soon enough

Fri, 12 Aug 2011 19:40:53 -0500
chase update 735pm. now transitioning to sunset light mode with hopefully mammatus and some lightning. the sunset should be amazing behind these storms.

Fri, 12 Aug 2011 15:55:29 -0500
chase update 355pm. Sitting near Offerle, alongside Brandon Sullivan, rapid severe storm development to the northwest moving southeast.

Fri, 12 Aug 2011 14:41:30 -0500
chase update 240pm. cumulus trying to form to my north through northeast... continuing to watch from home.. may drift northeast toward Kinsley soon?

Fri, 12 Aug 2011 12:46:15 -0500
Chase Day August 12: Target Southwest/South central KS from Greensburg to Coldwater to Medicine Lodge. Classic northwest-flow severe weather day with High CAPE! Depart Dodge when cumulus forms