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Last Updated: Monday, 4 October, 2004, 11:39 GMT 12:39 UK
In pictures: US volcano on alert
Mount St Helens volcano (foreground), with Mount Adams in the distance
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Mount St Helens volcano in the US state of Washington could erupt again very soon following a small eruption last week, scientists say.
Photo released by the US Geological Survey (USGS) shows smoke and ash rising from the crater of Mount St Helens, 1 October 2004
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It was the first eruption since 1986 and spewed a plume of steam and ash into the sky.
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The volcano had been showing rumbles of activity for several days. Here, stream can be seen rising from the crater.
Kiki Kreofski, of Boring, Oregon., holds a flower and wears a dust mask as she stands at the Castle Lake Viewpoint, 2 October 2004
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Over the weekend, crowds of spectators gathered at viewpoints to marvel at the volcano, some wearing masks to keep out the dust.
A dark section (left) shows where snow has melted from the 1 October eruption.
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A dark section (left) shows where snow has melted from Friday's eruption.
Mount St. Helens looms over Spirit Lake, still full of debris (centre right) from the volcano's 1980 eruption, 3 October 2004
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Spirit Lake, at the foot of the volcano, still contains debris from the more powerful eruption in 1980, which killed 57 people.
Peter Frenzen (far left), monument scientist for the Mount St Helens National Volcanic Monument, takes questions from reporters, 3 October 2004, at the Castle Lake Viewpoint in Washington state
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The volcano's reawakening has prompted much interest from reporters.
Kim Latschaw, of Gig Harbor, Washington, reads a newspapers as she awaits an eruption from Mount St Helens, 3 October 2004
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And residents in the states of Washington and Oregon are also hoping to witness an eruption, though from a safe distance.
Mount St Helens is seen against a star-filled sky
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It may look calm, but the volcano is on highest eruption risk level, indicating there is a risk to life and property in the area.

US volcano eruption 'imminent'
03 Oct 04 |  Americas
Warning over US volcano eruption
03 Oct 04 |  Americas
Concern over rumbling US volcano
30 Sep 04 |  Americas


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