May 1980 Swelling North Face

March 1980 Magnitude 4.1 earthquake
March 27, 1980
8:32 a.m. May 18, 1980 Historic Modern Eruption
May 18, 1980

May 1980 Swelling North Face

Swelling on the north face creates an ominous bulge. Hundreds of earthquakes shake the mountain.

MtStAdmin
MtStAdmin

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