2 Fires In Yosemite National Park Forest: Air Quality Is Poor & Multiple Trails Are Closed There are two wildfires burning in the Yosemite National Forest. The South Fork Fire started August 13, 2017 and is 2,407 acres with 7% containment, the Empire started August 1, 2017 by multiple lightening strikes and is currently 1,450 acres. South Fork and Empire Fire Updates – August 17, 2017 August 17, 2017ย Posted by: Yosemite Fire Information The South Fork […] Fire Firebrains | August 18, 2017 0 Comments