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Originally posted by schuyler
My kids live on Lake Tapps, a few miles away. According to the maps, the lava will just surround them before heading for Tacoma along the Puyallup, wiping out the tide flats (some would say that would be a good thing) or North through Auburn, Kent, and Renton until it stops at Lake Washington at the site of the 737 plant, which some would say would be a bad thing.
Originally posted by Avalon42
This makes it sound like the earthquake activity is actually the result of large rock falls rather than a real earthquake.
The events were big enough to register on earthquake sensors, and seismologists at the University of Washington called the park to see what was going on.
Mount Rainier has unleashed massive mudslides, or lahars, in the past. But the current avalanches are tiny by comparison. Nor is there any hint of volcanic activity, which would be required to trigger a lahar from Rainier's south side, Vallance said.
Rangers are advising climbers to avoid the Nisqually Glacier, which is not a common route up the mountain.
It's not clear why the avalanches are so large and frequent this year, Lofgren said. It could be related to heavy snowfall, followed by warmer weather — or something else altogether.
"This is just what happens on mountains," he said.
A micro earthquake occurred at 6:29:46 AM (PDT) on Sunday, October 23, 2011. The magnitude 1.8 event occurred 1 km (0 miles) SW of Mount St. Helens Volcano, WA. The hypocentral depth is 0.5 km (0.3 miles).