This plot shows where the GFS forecast 500-hPa height at each gridpoint ranks relative to its 1979-2020 climatology from the ERA5.

Looking at this weekend, the ridge over the North Pacific & trough over the NW US are both forecast to set records for this time of year. pic.twitter.com/Re1zpxbqHv

— Tomer Burg (@burgwx) December 25, 2021