The Little Deer Fire about 20 miles northeast of Weed had grown to 900 acres as of Saturday afternoon and was threatening Highway 97, private timberlands and the Union Pacific Railroad, according to a Klamath National Forest news release.

Highway 97 will be closed at Vista Point to Juniper Lodge and from Tennant Road south to the Railroad crossing because of a fire that has grown to 900 acres.

The Little Deer Fire is burning north of Grass Lake on the Klamath National Forest, about 20 miles northeast of Weed.

No structures were threatened as of 2 p.m. Saturday, but the fire was threatening Highway 97, private timberlands and the Union Pacific Railroad, according to a KNF news release.

It is burning near Little Deer Mountain on the Goosenest Ranger District.

Forest Service and CAL FIRE crews were finding it difficult to contain the fire because of its extreme behavior and frequent spot fires, according to the release.

Motorists are being encouraged to slow down and use caution when driving in the fire area.

Many additional fires are burning throughout the area as a result of recent lightning. More information on the Little Deer and other fires can be found at http://inciweb.nwcg.gov/

The Forest Service urges visitors “to be careful with anything that can cause a spark and start a wildfire. Simple actions may prevent costly fires: Shorten towing safety chains to be sure they do not drag on the roadway; check tire pressure, wheel bearings, breaks, and make sure no metal parts are dragging underneath the vehicle. Carry a small fire extinguisher in case an accident starts a fire start. To find out more about what you can do to prevent human caused, unwanted wildfires, please go to www.preventwildfireca.org”