Cold air actually makes it into the Columbia Basin as the ridge strengthens overhead, a much better pattern for a cold inversion on this.

I highly doubt it will get this cold

This inversion could give me my first freeze

The 00z AI Euro right now: This is the run to run change at only 162 hours:

Imagine if that beast had set up after an arctic outbreak with the basin in the deep freezer! Oh what could have been Or imagine that beast had setup over the pacific shutting it down for a week+ and delivering rounds of arctic air clear down to Nor Cal!