Rumbling at Mount St. Helens Triggers Alert
497186
Government scientists have warned hikers and researchers not to go near the crater of the Mount St. Helens volcano because there is an "increased likelihood" an explosion could occur, sending rocks and debris down the side of the mountain.
231573
Mount St. Helens belched a roiling plume of gray-white steam and ash Friday, more than a week after a flurry of earthquakes warned the volcano was reawakening.
394035
Government scientists have raised the alert level for the Mount St. Helens volcano in the northwestern US state of Washington, saying the next eruption could threaten lives and property near the mountain.
510824
VANCOUVER -- Concerns that the dome within Mount St. Helens&#39;s crater could release a rock-flinging, ash-filled explosion grew Wednesday after earthquake activity beneath the volcano steadily intensified.
268871
A surge of strong earthquakes under Mount St. Helens yesterday has seismologists worried that rock and ash could explode from the volcano&#39;s dome -- leading scientists to take the rare precaution of issuing a warning for a possible eruption.
59179
A series of unusual earthquakes near Mount St. Helens in recent days has scientists warning that something more serious could be imminent.
74694
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...
516050
New tremors detected overnight at Mount St. Helens increased the likelihood that the Washington state volcano would erupt again, scientists tracking renewed earthquake activity at the mountain said on Sunday.
406809
Mount St. Helens spewed more steam and  ash on Monday as government scientists remained on alert for a  larger eruption at the Washington state volcano, which woke  last week after 18 years of slumber.
265144
MOUNT St Helens spewed out more steam early today after new seismic tremors that led some experts to warn the volcano could explode at any time.
384210
Mount St. Helens began belching a huge column of white steam Friday after days of rumblings and earthquakes that suggested the volcano that erupted with cataclysmic force in 1980 was about to blow its top again.
512784
SEATTLE - 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...
129071
Federal officials lowered the alert level at Mount St. Helens Wednesday as the volcano entered a new quiet phase that scientists cannot yet explain.
726403
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.
656094
Steam seeping from a fracture atop the lava dome in Mount St. Helens' crater and the mountain's first noteworthy seismic activity since 2004 have caught scientists' attention this week as signs that something is moving inside it.
628932
Government scientists have warned  hikers and researchers not to go near the crater of the Mount  St. Helens volcano because there is an "increased likelihood"  an explosion could occur, sending rocks and debris down the  side of the mountain.
28743
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.