That makes more sense and lines up more closely with what we had here -- I didn't do a final measurement, but we were likely around 6.5 post-ULL. We got a little a bit out of the lull band, but less than you. IAD likely missed that band entirely.
For anyone who hasn't been following closely, UKMET has been the most southern model for a few runs. 12z appears to be marginally further south than 6z, but no drastic shift.
Driving home from dinner earlier tonight, Georgetown Pike was treated. Route 7 was not (at least west of Great Falls).
7-11 parking lot in Great Falls has enough rock salt on it to last through 2027.