Minor earthquake at Mount St. Helens
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A minor 3.1 magnitude earthquake split the lava dome in the crater of Mount St. Helens on Saturday, continuing a series of minor earthquakes rattling the site since October, the US Geological Survey (USGS) said.
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A moderate earthquake has hit central California, but there have been no reports of damage or injuries. The US Geological Survey says the quake had a magnitude of 5.9 on the Richter scale and was followed by a series of smaller aftershocks.
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The earthquake, which struck on Saturday at the crater at Mount St. Helens, measured 3.1 on the Richter scale, making it the strongest quake at the volcano since mid-October.
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SEATTLE Sept. 27, 2004 - Small earthquakes rattled Mount St. Helens at the rate of one or two a minute Monday, and seismologists were working to determine the significance of some of the most intense seismic activity in nearly 20 years.
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Part of Mount St. Helensâ crater floor has risen 50 to 100 feet since Tuesday during a stretch of low seismic activity, a sign that
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Hundreds of earthquakes too small to be detected by humans have been reported at Mount St. Helens, but they are probably not a prelude to an eruption, a state seismologist said Friday.
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Mount St. Helens could erupt within  days, government scientists said on Wednesday, raising the  alert after movement in the volcano's lava crust was detected  following a week of small earthquakes.
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Small earthquakes rattled Mount St. Helens at the rate of one or two a minute Monday, and seismologists were working to determine the significance of some of the most intense seismic activity in nearly 20 years.
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Scientists tracking earthquake activity at Mount St. Helens raised their warning level on Saturday to a Level 3-Volcano Alert, and officials ordered the evacuation
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Small earthquakes were detected at Mount St. Helens on Saturday, a warning sign that pressure was building up again in the volcano after it spewed steam and ash on Friday, scientists said.
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SEATTLE - Small earthquakes rattled Mount St. Helens at the rate of one or two a minute Monday, and seismologists were working to determine the significance of some of the most intense seismic activity in nearly 20 years...
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Mount St. Helen&#39;s begins another phase of activity that scientists say is a good mix for another eruption. Earthquakes surged beneath Mount St.
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Earthquake intensity is increasing and preliminary measurements show magma may be moving into the crater area of Mount St. Helens, federal scientists warned Wednesday.
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A strengthening series of earthquakes at Mount St. Helens prompted seismologists Sunday to warn that the once-devastating volcano may see a small explosion soon.
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SEATTLE -- Small earthquakes at the rate of one or two a minute yesterday had seismologists keeping a close watch on Mount St. Helens.
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MOUNT ST. HELENS NATIONAL MONUMENT, Wash. Small earthquakes continue at Mount Saint Helens and scientists predict the volcano will continue to blow off steam.
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Scientists says this morning&#39;s steam burst at Mount St. Helens was just a &#39;prelude.&#39;. Earthquakes indicate magma apparently is still pushing up under the volcano and could result in a real eruption.