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  • Road Closures Due to El Portal Fire

    The Big Oak Flat Road between Crane Flat and the El Portal Road is temporarily closed. There is no access to Yosemite Valley via the Big Oak Flat Road or Highway 120. Tioga Road is open and accessible via Big Oak Flat and Tioga Pass Entrances. More »

  • Campground Closures Due to Fire

    Crane Flat, Bridalveil Creek, and Yosemite Creek Campgrounds are temporarily closed. More »

  • Yosemite National Park is Open

    Yosemite Valley, Glacier Point, and Wawona/Mariposa Grove areas are open and accessible via Highways 140 and 41. Tioga Road is not accessible via Highways 140 and 41 due to a fire.

Lightning Strikes in Yosemite National Park Cause Four Fires

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Date: August 3, 2011

One Fire Being Managed For Multiple Objectives

On Sunday, July 31, 2011, Yosemite National Park experienced a severe thunderstorm, causing four confirmed lightning fires. These lightning caused fires were spotted at Moss Creek near the Merced Grove, Moraine Dome near Little Yosemite Valley, Lost Valley just east of Moraine Dome, and Avalanche Creek east of the Glacier Point Road. All fires, except the Avalanche Creek fire, have been suppressed.  

The Avalanche Fire is in designated wilderness, east of the Glacier Point Road and one mile north of Chinquapin, and will be managed for multiple objectives. Yosemite National Park Fire Managers are currently gathering data to effectively manage the fire. By managing this fire, it will provide a defensible fire buffer to the community of Yosemite West, Badger Pass Ski Resort, and other nearby park infrastructures.  

Smoke from the Avalanche Fire is visible along the Glacier Point Road, portions of the Wawona Road (Highway 41), and the Big Oak Flat Road (Highway 120). Yosemite Resource Managers have installed air quality monitoring equipment within the communities of Yosemite West, El Portal, and Yosemite Valley. The park is also working with the Mariposa County Air Pollution Control District to monitor potential air quality impacts.

Lightning caused wildland fires frequently occur during the summer months in Yosemite. Fire is a natural part of the Sierra Nevada ecosystem, which has shaped the forest landscape for thousands of years. Wildland fires create open spaces within dense forest, allowing sunlight to penetrate the forest floor. In addition, these fires rid the ground of an overabundance of surface fuels.  

It is not unusual to observe new lighting caused fires several days after a severe thunderstorm and as the weather warms. Fire officials will continue to monitor Yosemite’s wilderness for any new fires.

For more information on the Avalanche Fire and the Fire Program in Yosemite National Park, please visit www.nps.gov/yose/parkmgmt/current_fire.htm

Did You Know?

Yosemite Museum

When it opened to the public on May 29, 1926, the Yosemite Museum became the first museum building in the national park system, and its educational objectives served as a model for parks nationwide. It still functions much as it was originally intended, and currently exhibits items which mainly reflect the Native occupation of Yosemite Valley and its surroundings. When in the park, you can visit with one of three cultural demonstrators who primarily staff the Museum.