Large plume billows from Mount St. Helens
MOUNT ST. HELENS, Wash. Seismologists aren't worked up about Mount St. Helens latest activity. It released a towering plume of ash Tuesday, its most significant emission in months.
But experts say the release isn't likely a signal for any major eruption.
The volcano has vented ash and steam since last fall, when thousands of small earthquakes marked a seismic reawakening of the 83-hundred foot mountain.
Late afternoon television footage showed the plume billowing thousands of feet into the air, then drifting slowly to the northeast.
The Pacific Northwest Seismograph Network at the University of Washington reports the afternoon ash explosion happened about an hour after a two-point-oh magnitude quake. It rumbled on the east side of the mountain.
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