Video: Volcano spews millions of tons of ash into atmosphere

Print
Email
|

by KING 5 News

KING5.com

Posted on May 18, 2010 at 7:13 AM

Updated Tuesday, May 18 at 3:44 PM

The eruption of Mount St. Helens produced a column of ash and gas that rose 15 miles into the atmosphere in 15 minutes. Over the course of the day, 520 million tons of ash covered 22,000 square miles. It spread across the U.S. in three days and circled the Earth in 15 days.

Print
Email
|