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The activity is centered just off the state's northwest
border, some 40 miles (64 km) southeast of Lakeview, Oregon, and
started July 12, the Nevada Seismological Laboratory said on
Wednesday.
Over the past three months, the laboratory has recorded some 550
incidents of seismic activity of a magnitude of 2.0 or larger,
while there have been three magnitude 4.0 or higher quakes since
Oct. 30.
On Tuesday, the area was rocked by a magnitude 4.6 earthquake,
the laboratory said.
The U.S. Geological Survey said that roughly a dozen quakes
between magnitude 2.5 and 3.6 shook the area on Friday.
The laboratory said that following swarms like these there is a
slight increase in the likelihood that a larger earthquake will
happen.
The current swarm resembles one that occurred in Reno, Nevada,
in 2008 that shook the area over a two-month stretch with
increasingly strong temblors leading to a magnitude 5 quake that
caused moderate damage in the area, the Laboratory said.
(Reporting by Curtis Skinner; Editing by Hugh Lawson)
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