I would, of course, love for the 18z HRRR to be correct, but it is likely too strong and juiced. It has a 1004 mb low, whereas the globals have a 1008-1012 mb low. This HRRR run would probably finish with 16+" in Cedar Rapids, which I very much doubt. Half of that is more likely. The CAMs will probably come back to earth as the start approaches.