Howling winds topple trees, causing power outages and closing Yosemite Wind gusts of more than 100 miles per hour sounded like an angry animal to one resident. Another said it was so windy he couldn't breathe. KFSN Share: The winds also led to the closure of Yosemite National Park. Caltrans blocked Highway 41 on the way to Yosemite because windy conditions made it too dangerous even if crews could've cleaned up all the trees already knocked over. The park is expected to remain closed until Friday morning. Yosemite will likely remain closed until Friday morning as the park conducts damage assessments, repairs facilities, and clears trees. While some facilities have been damaged, no injuries have been reported as a result of the high winds in the park.