Some fear a supervolcanic eruption, but the USGS remains calm.
“This earthquake activity suggests that pressure is increasing fast inside the volcano.” – Jón Frimann
Japan Meteorological Agency issues tsunami warning – Waves up to 10 feet (3 m) expected – Coastal residents in Japan ordered to flee to higher ground
Homes and churches collapse but no deaths reported.
“Risk of big earthquake on San Andreas fault rises after quake swarm at Salton Sea,” warns the LA Times.
“Arizona had a 3.4 magnitude earthquake near the Utah-Grand Canyon border this morning (Friday) and a 3.8 magnitude yesterday,” says reader H.B. Schmidt.
Increased speculation that Mount Paektu could erupt.
Over the past few months, seismic activity at Bárðarbunga Volcano (in Central Iceland) has been increasing, mainly under the volcano’s large, ice-covered caldera.
See video taken when a 5.7 quake centered near the city caused a cliff outside the city to collapse into the sea.