The National Earthquake Information Center of the US Geological Survey says the quake struck Sunday, October 24, 2010 at 11:43:59AM local time.
Teton County sheriff's dispatcher Kristen Clifton said no injuries have been reported.
The landslide is reported to be in the Bridger-Teton National Forest northeast of Jackson. Teton County Sheriff's deputies are on their way to the location. She said hunters reported the land slide, but Clifton doesn't know whether they saw it happen.
Heather Voster, a dispatcher at Grand Teton National Park headquarters about 12 miles north of Jackson, said she felt "a mild shaking" that lasted about 10 seconds. No park damage has been reported," she said.