VANCOUVER, Washington (CNN) -- An observatory three miles from the base of Mount St. Helens was evacuated Saturday as scientists warned that the volcano could erupt again, and with more force than previously expected.

"There is a 50 percent chance or greater that there is going to be an eruption and a good chance that it will involve magma," said Tom Pierson with the U.S. Geological Survey. "We're watching it very closely."

Read entire article here.

Make sure you watch this on TV too! Journalists as Volcano bait to follow!