Not that surprising tbh pac jet extension brought the mean low center into the GOA region, temporary western ridge gets beaten down in time as energy ejects and the whole construct breaks down and releases as the pacific jet retracts and the mean low center reestablishes in the aleutians which renews western ridging and you get the current post D12 super cold. Soooo at least a short period of zonal across Noam is likely with the pv will be titled east with not much connection to it. Interestingly enough the 0z eps was still building western heights at 360 hr...