Partially derived from former Super Typhoon Nuri, the typhoon's remnants joined up with the polar jet stream and a very strong disturbance in the mid-latitude belt of westerly winds, leading to explosive development of low pressure.

Increasing winds may drive the air quality to become "unhealthy to hazardous," said a statement from Eileen Probasco, planning director with the Matanuska-Sustina Borough.

A band of wet, warm weather barreled into Southcentral Alaska on Friday and stirred up an odd blend of high winds, slushy roads and even rainbow sightings.