MT. ST. HELENS - Surging seismic activity at Mount St. Helens has changed the whale-back shape of the volcano's emerging new dome, leaving it more like the back of a stegosaurus - a dinosaur with bony ...

Volcanoes are nature's most dramatic rocks, and while their eruptions can be awe-inspiring, they also pose serious threats to ...

MT. ST. HELENS - Volcanic rock has flowed to thesurface of Mount St. Helens' crater, creating a new lava dome afterweeks of seismic activity, a geologist said Tuesday. Scientists had known for days ...

Mount St. Helens looked like it might be erupting again. Commercial pilots flying in the area Tuesday reported clouds of fine volcanic ash rising into the air above the collapsed dome of the Cascades’ ...

Some Pacific Northwesterners woke Tuesday to an unusual sight: A smoky haze shrouded Mount St. Helens, the large, active stratovolcano in Washington state that erupted catastrophically in 1980. But a ...

A panoramic view of the south rim of Mount St. Helens, looking past the lava dome north toward Spirit Lake and Mount Rainier. Dean J. Koepfler The public is still able to visit multiple recreation ...

This browser does not support the Video element. Saturday marks the 44-year anniversary of Mount St. Helens' eruption in Washington. The blast on May 18, 1980, is the worst volcanic eruption in U.S.

Forty-three years ago, a Plinian eruptive column rose into the sky and volcanic debris rapidly spewed from the volcano. This cataclysmic eruption, which occurred on May 18, 1980, is the most ...

MOUNT ST. HELENS -- For the climbing public, the curtain up goes next week on the third act of America's most fascinatingly dysfunctional mountain. It's anyone's guess how many more acts are to follow ...

MOUNT ST. HELENS, Wash. (AP) -- The lava dome in Mount St. Helens' crater apparently is growing, possibly a new sign of an impending eruption, but a major explosion doesn't seem likely, a top volcano ...

YAKIMA, Wash. — A dome by any other name would erupt so strong. But, alas, what's in a name might have tormented Shakespeare as it has even the most savvy of scientists. It's been called the ‘‘blister ...

YAKIMA, Wash. (AP) -- That whaddyacallit that's growing on Mount St. Helens -- what DO you call it? Even Shakespeare himself might have trouble figuring out what's in a name. It's been called the ...