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LAKE BECHAROF SEISMIC SWARM
During the past week several additional, but less intense, tectonic earthquake swarms occurred near the SW side of Lake Becharof. The swarms of the past week consisted of tens of earthquakes with magnitudes as large as M4.5. An initial swarm of tectonic earthquakes began at 4:30 PM ADT on Friday, May 8, 1998 with five earthquakes of M5.2 to M4.7 that shook the mid-Alaska Peninsula region, including the towns of King Salmon, Dillingham, Naknek, Egegik, and Pilot Point. Epicenters of the earthquakes are located on the SW side of Lake Becharof, approximately 10-20 km (approximately 6-12 miles) NW of Ukinrek Maars, and near the southern end of the Bruin Bay fault
THERE IS NO EVIDENCE OF IMMINENT VOLCANIC HAZARD RESULTING FROM THIS SEISMIC SWARM.
Seismic activity is monitored in real time at 16 volcanoes
in Alaska. Some of these volcanoes may currently display
anomalous seismicity, but they are not considered to be at
a dangerous level of unrest.