Oregon Department of Forestry and U.S. Forest Service crews are working to stop a fast moving wildfire south of Hood River.  

It started early Wednesday morning and grew quickly.  Rod Nichols, with the Oregon Department of Forestry, says that's surprising, because high humidity overnight normally causes fires to spread slowly.

By 6 a.m. it had burned 50 acres.

There are no houses nearby, but the fire could spread fast through the dry timber.

Ground crews will be assisted by a helicopter in their effort to contain the fire.

The cause of the fire isn't known.  There is a timber harvesting operation nearby.

Photo: KATU-TV