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Tuesday, 02-Nov-2004 12:04:41 EST
Welcome to the U.S. Geological Survey
Federal source for science about the Earth,
its natural and
living resources, natural hazards, and the environment.
Mount St. Helens, the most active volcano in the continental United States, is on alert for a strong eruption--currently at level 2, or aviation color code orange. Over the past two weeks, the volcano has awakened from a long slumber, spewing several spectacular bursts of steam and ash. Read more . . .
USGS scientists and colleagues at the Southern California Earthquake Center are using Global Positioning System technology to track minute changes in the Earth's surface around Los Angeles and assess the risk of future earthquakes. The PKRD station watches over the city day and night. Read more . . .