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Cold/Wind Chill in Koyukuk-upper Kobuk Valleys, Alaska

Cold/Wind Chill December 24, 1999 – December 25, 1999 · Koyukuk-upper Kobuk Valleys, Alaska

The wider storm

Building high pressure over interior Alaska with a cold airmass over the Brooks Range and North Slope created a period of extreme windchills on the north and south slopes of the Brooks Range, inferred from observations at Anaktuvuk Pass, where the lowest windchill value was -80.

Source: NOAA Storm Events Database, event 5721033. Narratives are written by the National Weather Service forecast office that issued the report.

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