Cold Weather Advisory

Locations Affected

Gakona Glacier, AK ∙ Root Glacier, AK ∙ Mendeltna, AK ∙ Mount Drum, AK ∙ Mount Bona, AK ∙ Summit Lake, AK ∙ Mentasta Lake Alaska Native Village Statistical Area, AK ∙ Walsh Glacier, AK ∙ Gulkana Alaska Native Village Statistical Area, AK ∙ Kennicott Glacier, AK

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Anchorage AK 455 AM AKST Wed Dec 10 2025 ...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM AKST FRIDAY... * WHAT...Very cold temperatures and wind chills of 40 to 50 below zero. * WHERE...Copper River Basin and Thompson Pass. * WHEN...Until 4 PM AKST Friday. * IMPACTS...The dangerously cold wind chills as low as 50 below zero could cause frostbite on exposed skin in as little as 5 minutes. Frostbite and hypothermia are likely if exposed to these temperatures. * ADDITIONAL DETAILS...Overnight low temperatures below -40F are expected through Friday morning, warming to the -10s and -20s when cloud cover builds into the Copper River Basin. Gusty winds through valleys and passes, such as Mentasta Pass and Thompson Pass, will lead to dangerously cold wind chills as low as 50 below zero. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while outside. Wear appropriate clothing, a hat, and gloves. Be sure to have an emergency kit in your car and appropriate cold weather clothing and blankets in case your car breaks down.

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