Scientists say recent quake swarm at Rainier is not unusual
More than 20 small quakes have struck under the volcano in the past week, a rate that’s higher than usual but not unprecedented. Nearly two dozen small earthquakes have rattled Mount Rainier over the past week, but seismologists say there’s no cause for worry. “In the past, these swarms last a couple of days to a week or so and then die out,” said Paul Bodin, of the Pacific Northwest Seismic Network at the University of Washington. The first of the 23 quakes struck on Sept. 11 near the volcano’s summit. The largest of the quakes registered magnitude 1.6.