Cold/Wind Chill — Nern P.w. Snd, Alaska

2021-11-28 · Nern P.w. Snd, Alaska

Event narrative

One of the observations sites in Thompson Pass recorded northeast winds around 30kts with gusts up to 33kts between 9 am and 3 pm on the 28th of November. This combined with temperatures -5 to -10 degrees below zero resulted in very cold wind chills of -40 to -42 degrees.

Wider weather episode

A rather stagnant was in place for the last couple days of November over the Bering Sea and Aleutian Islands. Arctic air remained entrenched over the Bering including the Eastern Aleutians. This pattern would keep the Arctic air in place with the same northerly flow throughout this time frame. However, a storm system moved northward from the North Pacific met up with this Arctic air and resulted in hazardous weather conditions (snow and blowing snow/blizzard conditions) especially for the Eastern Aleutians. The effects didn't end here though as the system spread northeastward and impacted portions of Southcentral Alaska as well.

Source: NOAA Storm Events Database, event_id 1001887. Narrative written by the NWS forecast office that issued the report.