Volcano program coordinator Brian Terbush explains how we can tell when a volcano like Mount St. Helens will "wake up." Although the recent event at 12:36 a.m. was the second-largest earthquake since 1981, it is considered "pretty typical" behavio Washington Emergency Management Division Courtesy
Volcano program coordinator Brian Terbush explains how we can tell when a volcano like Mount St. Helens will "wake up." Although the recent event at 12:36 a.m. was the second-largest earthquake since 1981, it is considered "pretty typical" behavio Washington Emergency Management Division Courtesy

Mount St. Helens rattled by 2nd largest earthquake in area since 1981, then 15 aftershocks

January 03, 2018 08:02 AM