Read the text and fill in the gaps with the right phrases.

A day to remember
On a clear Sunday morning, on the 18th of May, 1980, Mount St. Helens erupted ... . The eruption was the deadliest volcanic event in the history of the United States. At exactly 8:32 am, ... it was heard hundreds of miles away, occurred. ... from the volcano's crater and raced down the mountainside. Every building ... . Over 1.5 million tons of ... were released into the atmosphere. Ash clouds ... and blocked out the sun. Geologists and volcanologists did not predict the disaster.