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BOULDER, Colo. — Firefighters gained an upper hand on the Flagstaff Fire in Boulder Wednesday. On Thursday morning, the fire was showing minimal signs of growth.

The fire is now 30-percent contained and the blaze’s size is approximately 300 acres. A media briefing is scheduled Thursday at 7:30 a.m.

Favorable weather and effective firefighting efforts has decreased concern that the fire will burn into southwest Boulder neighborhoods. As a result, the city has lifted about 2,400 pre-evacuation notices.

However, fears were apparent most of Wednesday as stubborn spot fires burned closer to several neighborhoods including Devil’s Thumb, Highland Park and Shanahan Ridge.

“I was out here a half hour ago and there was no smoke in the area. Now, there are flames there,” said Devil’s Thumb resident Jackie Jimmerson, whose home sits on open space leading to Bear Peak, where the fire started.

Jimmerson’s home is just a half-mile from the base of the mountain where fire commanders dispatched six aircraft to battle the flames, up from five on Tuesday.

There are 250 firefighters are on the scene.

“We do have a defensible area, city open space, so houses don’t abut next to the tree line,” Commander Rick Brough with Boulder County Sheriff’s Office said.

Official updates from Boulder Office of Emergency Management