SEATTLE — The first earthquake rattled Mount St. Helens on March 20, 1980 — nearly two months before the mountain erupted. But it took awhile for anyone to notice. The sole seismometer on the ...

Saturday marks the 44-year anniversary of Mount St. Helens' eruption in Washington. The blast on May 18, 1980, is the worst volcanic eruption in U.S. history, killing 57 people and spewing 520 ...

May 18, 2025, marks the 45th anniversary of Mount St. Helens' eruption — a catastrophic event that transformed the landscape and killed 57 people. From this devastation emerged an incredible ...

On May 18, 1980- The most powerful volcanic eruption in U.S. history occurred. On May 18, 1980- The most powerful volcanic eruption in U.S. history occurred. Located in Washington State, Mount St.

MOUNT ST. HELENS NATIONAL VOLCANIC MONUMENT — The fact that unpredictably moving rock has blocked the road to its prime visitor center says a lot about Mount St. Helens. Much of the ...

Earth faced one of the deadliest natural disasters in history — the Toba supereruption in Indonesia. This colossal blast was ...