A review of the Sounding from GGW shows an elevated unstable layer with sufficient moisture for ongoing storms through the afternoon.  It looks like the primary threat from convection will be the possibility of some coin size hail and high convective wind gusts in the strong or severe cells which develop.  Current radar shows scattered multi-cellular storms west of Billings will be moving through the region with a general increase in coverage expected through mid-afternoon.

Pendergrast/Jason Williams