The National Weather Service has updated the wind chill watch to a wind chill warning.
A wind chill warning means wind chill values of 15 F below zero or colder are likely. A reinforcing surge of arctic air will spill into the inland northwest tonight and continuing into Saturday morning. Breezy northeast winds accompanying the surge of cold air will likely drop wind chill values to dangerous levels.
The combination of the bitter cold and strong winds could cause frostbite to exposed skin when the wind chill is -18 or lower in roughly 30 minutes.
Minimize your exposer by staying indoors. If you must be outdoors dress in warm clothing, layers of warm clothing are more effective than a single layer of thick clothing, and minimize the amount of time you are outside.
Many areas will see wind chills well below zero once again Saturday morning. Temperatures will slowly moderate by the middle of next week with a good chance of snow by the middle of next week. For more information for weather forecasts and how to protect yourself from frostbite please use the following links.
WSU Environmental Health and Safety Extreme Cold Guidelines