St. Helens quakes grow in frequency
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The magnitude and frequency of earthquakes at Mount St. Helens increased gradually on Friday, reaching levels &quot;equal to or higher than&quot; during the steam and ash eruption
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SEATTLE - Government scientists raised the alert level Saturday for Mount St. Helens after its second steam eruption in two days was followed by a powerful tremor...
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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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VANCOUVER, Wash.  - Scientists tracking earthquake  activity at Mount St. Helens raised their warning level on  Saturday to a Level 3-Volcano Alert, and officials prepared to  evacuate a visitor center about five miles from the volcano's  crater.
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Government scientists raised the alert level Saturday for Mount St. Helens after its second steam eruption in two days was followed by a powerful tremor. They said the next eruption was imminent or in progress, and could threaten life and property in the remote area near the volcano.
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More steam gushed out of Mount St. Helens following an increase in earthquake activity, keeping scientists guessing as to what is happening deep within the volcano and perhaps
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Low to moderate earthquakes continued Friday beneath Mount St. Helens, suggesting that the volcano continues to build toward some kind of eruption.
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Part of Mount St. Helens' crater floor has risen 50 to 100 feet since Tuesday while earthquake rates have been low, signs that magma is moving upward without much resistance, scientists said Thursday.
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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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Earthquake activity began increasing at Mount St. Helens, however overcast skies Saturday impeded scientists&#39; ability to see what was happening at the volcano.
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MOUNT ST. HELENS, Wash. Oct. 6, 2004 - Weeks or months of occasional steam blasts and possibly some eruptions of fresh volcanic rock and ash are the most likely scenario at Mount St.
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Three or four times every minute, Mount St. Helens shivers. Sometimes the majestic peak even shudders, the trembling beneath reaching a crescendo, a magnitude of 3.3.
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A tremor at Mount St Helens volcano in the US state of Washington prompts fresh warnings of an eruption.
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SEATTLE - Mount St. Helens began rumbling more intensely Wednesday, prompting scientists to warn that a small or moderate eruption could happen in the next few days...
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September 29, 2004 - Scientists in Washington state say Mount St. Helens may be getting ready to erupt again. Small earthquakes are being detected beneath the volcano&#39;s lava dome at the rate of 4 per minute.
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Federal officials have stepped up the alert level on Mount Saint Helens in southwestern Washington state. The Level Three alert indicates a possible threat to life and property.
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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.