• The Cathedral Group from the Teton Park Road

    Grand Teton

    National Park Wyoming

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  • Bears are active in Grand Teton

    Black and grizzly bears are roaming throughout the park--near roads, trails and in backcountry areas. Hikers and backcountry users are advised to travel in groups of three or more, make noise and carry bear spray. Visitors must stay 100 yards from bears. More »

  • Area closure in effect for trails in the Jenny Lake Area

    A temporary area closure will be in effect for several trails in the Jenny Lake area due to construction activities involving helicopter-assisted transport of heavy material. The closure will last from October 27 through October 30, and possibly longer. More »

  • Multi-use Pathway Closures

    Intermittent closures of the park Multi-use Pathway System will occur through mid-October during asphalt sealing and safety improvement work. Pathway sections will reopen as work is completed. Follow the link for a map and more information. More »

  • Moose-Wilson Road Status

    The Moose-Wilson Road between the Death Canyon Road and the Murie Center Road is currently open to all traffic. The road may re-close at any time due to wildlife activity. For current road conditions call 307-739-3682. More »

Grand Teton to Host Solar Eclipse Viewing Event

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Date: May 17, 2012
Contact: Public Affairs Office, 307.739.3393

Grand Teton National Park will host a solar eclipse viewing event on Sunday evening, May 20, beginning 6 p.m. at the Willow Flats Overlook north of Jackson Lake Junction. Bob Hoyle, a professional astronomer and park ranger naturalist, will conduct the event in partnership with the Jackson Hole Astronomy Club.

A partial solar eclipse will be visible in Jackson Hole with about 80 percent of the Sun's disk covered by the Moon at mid-eclipse. This should occur at approximately 7:30 p.m. when the Sun is low in the western sky. The eclipse will end as the Sun drops behind the jagged Teton Range. During an informal program, Ranger Hoyle will explain the circumstances necessary for an eclipse to occur and describe the current increase in solar flare activity on the Sun with the approach of sunspot maximum.

Several telescopes equipped with special solar filters will be available to safely watch this eclipse. With 80 percent of its disk covered, the Sun becomes somewhat dimmed and people may be tempted to look directly at it. This can be harmful and may lead to permanent damage to the eyes. Special hand-held filters will also be available to view the eclipse safely without a telescope. As a bonus, viewers have the chance to see some of the numerous sunspot groups currently visible on the Sun's surface.  

This solar event is called an "annular" eclipse because the Moon is near apogee-the greatest distance from Earth-and does not completely cover the Sun. A visible ring of sunlight or "annulus" (Latin for ring) frames the Moon at mid-eclipse, prompting the name "annular" or ring eclipse. This solar eclipse will be most visible along a path that passes through several national parks in the southwest, through parts of Nevada, and off the southern Oregon coast. Reservations are not required for this event.

For more information, please contact the Colter Bay Visitor Center at 307.739.3590.

-NPS-
www.nps.gov/grte

Did You Know?

Tetons from the north, photo by Erin Himmel

Did you know that a large fault lies at the base of the Teton Range? Every few thousand years earthquakes up to a magnitude of 7.5 on the Richter Scale signal movement on the Teton fault, lifting the mountains skyward and hinging the valley floor downward.