USGS Volcano Hazards Program Volcano Update

The real-time computer system located eight small earthquakes in the vicinity of Long Valley caldera since the last update at 9:12 AM (PST) on November 6. Two were located beneath Mammoth Mountain: a M=0.3 earthquake at 9:48 AM on the 6th and a M=1.2 earthquake at 12:06 AM on the 7th. Six were located in a cluster beneath the Sierra Nevada south of the caldera 0.5 mile east of Grinnell Lake (11 miles SW of Tom's Place) beginning with magnitude M=2.4 and 2.2 earthquakes at 10:56 and 10:58 AM on the 6th. The last in this cluster was a M=1.3 event at 10:11 PM on the 6th.

Elsewhere, a M=1.3 earthquake at 11:18 AM on the 6th was located 5 miles NE of Bishop.