Just not sure which data you guys are using, but the reflectivity I'm seeing looks to being to crap (for now).
I emphasize "for now," because they have at least sustained themselves for about an hour or so now.
I do see some shear on base velocities, but it's all scattered about and nothing really wrapping up in the ideal location and strength to produce. I hope this changes REAL soon!
Boy do I stand corrected. T-warnings for Gray and Wheeler counties. Hmmm. I'm sure we have some chasers on those, so maybe things ARE getting going after all.
edit: good grief! Wow how things can change with just one updated scan of the radar. Now they're looking discrete again, and the two most southern cells, visible on the AMA radar, look to have nice hooks forming on both. That was fast!
Now, I hope we have chasers on them!