Yeah not sure what is playing into the HRRR but we have decent height falls tomorrow, increasing dynamics, steep lapse rates, and moderate instability. I know the main forcing/cold front is west...but more times than not our convection develops with the pre-frontal trough and not the actual cold front. But I would not be shocked to see the HRRR ramp up as we get closer. Same thing with the mid-western states...HRRR I think underplaying, especially Mississippi Valley