Lightning with first severe? storm

The first strong/severe storm developed around 1900z along the WY/SD border, at least according to ProbSevere.  Four-panel loop below shows GLM lightning products,  plus radar and ProbSvr in the lower right panel, from 1850 to 1910Z. In this case the GLM lightning alone doesn't really stand out for this storm, as far as I can tell. WFO UNR did issue a SVR at 1917z.

Also in the upper left panel the NLDN CG lightning is plotted along with GLM FED. The slight NW displacement of GLM is evident.  A.Cope