MILESTONES: 24 YEARS AGO IN TIME

After several days of small earthquakes, MOUNT ST. HELENS erupted late last week. When the mountain in Washington State exploded back in 1980, TIME recounted the devastation in a cover story.

"Vancouver, Vancouver, this is it!" The frantic warning was radioed at precisely 8:31 a.m. on that fateful Sunday by Volcano Expert David Johnson, 30, who had climbed to a monitoring site five miles from Washington State's Mount St. Helens in the snow-capped Cascade Range, 40 miles northeast of Portland, Ore. He wanted to peer through binoculars at an ominous bulge building up below the crater, which had been rumbling and...

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