The fast-moving Caribou Lake Fire grew to 100 acres on Tuesday.

A release from AK Fire Info says the fire is burning 23 miles northeast of Homer and is about a mile from Caribou Lake. An initial release said smokejumpers were protecting about 30 structures threatened by the fire.

Officials say no structures or cabins are in immediate danger as of Tuesday.

In terms of tactical firefighting, there is a fire boss aircraft scooping water, two heavy air tankers and a Division of Forestry helicopter attacking the fire. They helped firefighters on the ground with both water and flame retardant drops

Black spruce is the main source of fuel for this fire, which was moving east because of winds coming in from the west.

Firefighters were joined Tuesday morning by a dozer constructing a fire line on the south end of the fire, AK Fire Info said.

This is a developing story. Check back for updates. Copyright 2019 KTVA. All rights reserved.