HISTORY

The Great Chilean Earthquake of 22 May 1960, also known as the Valdivia Quake, was the most powerful earthquake ever recorded. It struck southern Chile with extreme force, shaking the ground for more than ten minutes and triggering massive tsunamis that devastated coastal areas in Chile and across the Pacific Ocean, including Hawaii, Japan, and the Philippines. The earthquake permanently changed the coastline, left millions homeless, and had far-reaching effects beyond Chile’s borders.

• Name: Great Chilean Earthquake (Valdivia Earthquake) 

• Date:  May 22 1960

• Location: Off the coast of southern Chile near Valdivia

• Magnitude: 9.5

• Intensity: XII (Catastrophic)

• type: Megathrust Earthquake

• Deaths: approximately 1,655, and at least 3,000 were injured

The Great Alaska Earthquake of 27 March 1964, also known as the Good Friday Earthquake, was one of the most powerful earthquakes ever recorded. With a magnitude of 9.2, it struck the Prince William Sound region of Alaska, shaking the ground for about 4–5 minutes and triggering massive tsunamis and ground failures. The earthquake caused widespread destruction in Alaska and affected coastal areas along the Pacific, including parts of the U.S. West Coast.

• Name: Great Alaska Earthquake (Good Friday Earthquake)

• Date: March 27, 1964

• Location: Prince William Sound, Alaska, United States

• Magnitude: 9.2

• Intensity: X (Completely Devastating)

• Type: Megathrust Earthquake

• Deaths: 131 people were killed in the earthquake and tsunami

The Indian Ocean Earthquake and Tsunami of 26 December 2004, also called the Boxing Day Tsunami — was one of the deadliest natural disasters in recorded history. A massive undersea megathrust earthquake off the west coast of northern Sumatra, Indonesia generated enormous tsunami waves that radiated across the entire Indian Ocean. These waves slammed into coastal regions stretching from Indonesia, Sri Lanka, India, and Thailand to East Africa, causing catastrophic destruction and loss of life. The disaster highlighted the need for improved tsunami warning systems in oceans outside the Pacific.

• Name: Indian Ocean Earthquake and Tsunami (Boxing Day Tsunami)

• Date: December 26, 2004

• Location: Indian Ocean, off the coast of Sumatra, Indonesia

• Magnitude: 9.1–9.3 Mw

• Type: Megathrust Earthquake

• Maximum Intensity : IX (Devastating)

• Deaths: approxiemately 227,000–230,000 people across many countries