Yeah plenty reason to be nervous about hrrr. But if it makes you feel better, it ticked north at 11z and the new 12z filled out the moisture fetch on the backside.
That is a great fetch. I’m thinking the Nam 3k is going to be more right than the hrrr because the nam strengthens or maintains fetch strength while the hrrr weakens it.
the 12k NAM was definitely overdone, and I don't see much change on the 3k NAM from previous run yet.
looks like 5-6" when lopping off the initial inch before dark for DC metro including IAD. This is 10 to 1