UPDATE: Crews are getting closer to fully containing the South Valley Fire burning near Dufur.
Crews expect to have the blaze contained by Friday.
It has burned more than 20,000 acres and is 65 percent contained.
PORTLAND, Ore. (AP) -- A new blaze in north-central Oregon nearly tripled in size overnight.
The South Valley Fire near the town of Dufur, about two hours southeast of Portland, spread to more than 14,000 acres early Thursday.
The Oregon State Fire Marshal's Office says dozens of structures are threatened -- some have burned -- and at least 400 people have been told to evacuate.
The fire, caused by humans rather than lightning, began Wednesday afternoon. By nightfall, Gov. Kate Brown declared it a conflagration, which authorizes the fire marshal to mobilize state-wide resources.
It's the third major wildfire in the area this summer. One scorched 125 square miles (323 square kilometers) and killed a man.
After an unusually warm July, firefighters caught a break with cooler temperatures Thursday.
- Crews make progress on South Valley Fire near Dufur
- Crews making progress on Terwilliger Fire
- Delta Fire Tops 60,000 Acres, Fire Crews Make Progress
- New fire near Dufur closes Hwy. 197, burns structures
- Dufur track coach sentenced to prison for sex abuse
- Donation drive for Dorena Lake fire victims making progress
- Copper returns home, makes great progress
- Greenhill Humane Society making progress on renovation
- Crews in place to battle South Umpqua Complex Fire
- Habitat for Humanity making progress on Roseburg home