The Observation Forest Fire on the Bitterroot National Forest is now 322 acres and the closure area is shown on the map (see photo). The closure includes the Lost Horse Canyon, starting at the Lick Creek junction. That includes Twin Lakes, Schumaker Campground and Bear Creek Pass Trailhead.

Como Lake is still open, but visitors should be aware of helicopters dipping water from the lake. Another helicopter, which can carry up to 2,600 gallons of water, arrived at the fire Tuesday. A temporary flight restriction has been set up for a 5-mile radius around the fire.

Over 100,000 gallons of water have been dropped on the fire and a mobile retardant station is being set up near the fire.

The fire is still on Observation ridge on the north side of Lost Horse Canyon. According to Joni Lubke of the Bitterroot National Forest, ground crews will be working on the southwest and northeast sides of the fire and a dozer line is being constructed from Lost Horse Road to the southeast side of the fire.

The fire incident command post has been set up at the Darby High School.

Elsewhere on the forest, lookouts reported three more lightning-caused fires in the south end of the valley. All are less than a tenth of an acre in size. Crews are responding to the blazes.

Fire danger is expected to be raised the "High" Wednesday on the Bitterroot National Forest.