A new wildfire has forced the evacuation of 275 homes in Rowena, Oregon, a town in the Columbia River Gorge, according to The Associated Press.

As of Wednesday night, no structures have been burned, but firefighters in the town were set to work through the night protecting homes and other buildings.

Residents can view a map of wildfires across the United States at the USDA Forest Service website.

Dalles, Oregon, a town about six miles from Rowena and home to around 14,000 people, has been put on alert, and 90 homes in the town have been told to prepare for possible evacuation.

The fire began Tuesday night in brush and spread to around 200 acres on steep terrain that is home to rattlesnakes and ticks. Rowena is about 75 miles east of Portland.

Justin de Ruyter, a fire spokesman, said that on Wednesday five helicopters poured water on the fire as winds picked up. "We've got a challenging fire on our hands," he said.

Oregon Gov. John Kitzhaber mobilized local fire departments, from across three counties, to come in and protect buildings in and around Rowena.

Meanwhile, firefighters elsewhere in Oregon still are battling the state's biggest fire, the Oregon Gulch fire, which is closer to the Oregon border with California and is burning about 57 square miles, The Statesman Journal reported. Firefighters on Wednesday had surrounded the blaze, and officials say the fire is about 37 percent contained.

The Gulch fire has burned six homes in rural Oregon, but evacuation orders on that fire have been eased. In all, 10 large fires are burning in Oregon, and around 4,000 firefighters are battling them across 43 square miles. The fires are estimated to have cost the state more than $36.7 million to date.

The Northwest U.S. has been at its highest level of fire preparedness -- Level 5 -- since July 16, and officials say that the season likely isn't close to being done.