Firefighters in Tuolumne County are facing an uphill battle as the Rim fire rages on.
The week old fire has devoured 125,620 acres near Groveland, an increase of 20,000 acres since Friday morning. The flames also entered Yosemite National Park for the first time Friday, though NPS officials say the fire is not affecting park operations.
More than 2,600 firefighters are taming the fire that is threatening 4,500 structures. The fire is 5 percent contained.
Despite Rim fire, Yosemite Valley remains clear, beautiful for visitors, park officials say
High winds and low humidity in the next few days will hinder firefighting efforts. The National Weather Service is forecasting gusts up to 30 mph for the area, along with low humidity.
"It's going to be sketchy through Monday as far as the weather outlook goes," said weather service meteorologist Drew Peterson.
Because of the wind pattern, Lake Tahoe and Reno will bear the brunt of the smoke, he added.
Meanwhile, the American fire has reached 67 percent containment overnight. The fire near Foresthill has charred 22,040 acres. More than 1,600 firefighters are on the scene.
PHOTO CREDIT: In this undated photo provided by the U.S. Forest Service, the Rim Fire burns near Yosemite National Park, Calif. The wildfire outside Yosemite National Park -- one of more than 50 major brush blazes burning across the western U.S. -- more than tripled in size overnight and still threatens about 2,500 homes, hotels and camp buildings. Fire officials said the blaze burning in remote, steep terrain had grown to more than 84 square miles and was only 2 percent contained on Thursday, down from 5 percent a day earlier. (AP Photo/ U.S. Forest Service)