Meteorologists say the brunt of the storm is likely headed for the southern edge of the Seward Peninsula.

The smoke particles have already reached high into the atmosphere, so they won't cause health problems or unusual odours. The most colourful sunset is expected on Tuesday evening.

Communities along the lower Kuskokwim River and coastal areas in Western Alaska assess damage from recent storms, with flooding and erosion impacting homes and infrastructure, and a new storm potentially exacerbating conditions.

High water throughout the summer continues to erode the river bank.