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.
* *  Mike Umscheid PHOTOGRAPHY & STORM CHASE BLOG   * *

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.