FRESNO, Calif. -- The National Park Service has announced that parts of Yosemite National Park will remain closed until Friday, August 3 due to the Ferguson Fire.The closure began July 25 because choking smoke from the Ferguson Fire had filled the iconic Yosemite Valley, creating unhealthy conditions. Firefighting operations had also limited access to Highway 41/Wawona Road.Below is the news release from the National Park Service: