First Hit on ProbSevere for Lubbock Convection, note on CI

Two firsts for me:  1) First cell I've seen so far to register a SevereProb today, and 2) First cell I've ever seen with SevereProb!

As of 2156Z, 24 minutes later, flash rates just jumped over the previous update, and probs made a modest jump to 12/3/0.

One thing that I did notice was that these cells didn't seem to be picked up by the Convective Initiation algorithm prior to development.