Thursday, August 13, 2009

50 year Hebgen Lake earthquake...

anniversary occurs this coming Monday, 17 August 2009. The 7.3-7.5 magnitude event caused the Madison Canyon rockslide, created Quake Lake, killed 28 campers, tilted Hebgen Lake to the north and generated a seiche that nearly eroded the earthen dam, and changed the timing of geysers at Yellowstone National Park.

Here's a recently published historical account in the Bozeman Daily Chronicle.

And a heads up: there will be local programs in the West Yellowstone area to mark the anniversary of the historic temblor.

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