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 Photo by Bill Wagner Clouds sweep over the Mount St. Helens crater rim Wednesday during the first day of spring. Residents may have seen tall plumes above the crater's rim early Wednesday, but those were due to weather conditions near the dome and not a change in the ongoing eruption, according to the U.S. Geological Survey. Such plumes, like the remnants of today's seen in the center of the photo, are created when water vapor rises above the hot dome, cools in the atmosphere and condenses to form visible water droplets. |
Mount St. Helens: Still steamy after all these years
Thursday, March 22, 2007 6:51 AM PDT
By Staff
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E-mail this articleClouds sweep over the Mount St. Helens crater rim Wednesday during the first day of spring. Residents may have seen tall plumes above the crater's rim early Wednesday, but those were due to weather conditions near the dome and not a change in the ongoing eruption, according to the U.S. Geological Survey. Such plumes, like the remnants of today's seen in the center of the photo, are created when water vapor rises above the hot dome, cools in the atmosphere and condenses to form visible water droplets.
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