Preparedness Notes for Wednesday — May 18, 2022
On May 18th, 1980, Mount St. Helens in Washington erupted, causing a massive avalanche and killing 57 people. Ash from the volcanic eruption fell as far away as Minnesota. Seismic activity at Mount St. Helens, which is 96 miles south of Seattle, began on March 16. A 4.2-magnitude tremor was recorded four days later and then, on March 23-24, there were 174 different recorded tremors. The first eruption occurred on March 27, when a 250-foot wide vent opened up on top of the mountain. Ash was blasted 10,000 feet in the air, some of which came down nearly 300 miles …