Archive · 20 May 2025
US Coastal Areas Face Megatsunami Risk Within 50 Years, Study Warns
Scientists are worried that giant walls of water, called megatsunamis, could hit the US in the next 50 years, especially in Alaska, Hawaii, and Washington.
These huge waves, possibly as tall as a skyscraper, could be caused by big earthquakes or landslides underwater.
One dangerous spot is the Cascadia Subduction Zone, where an earthquake could happen.
Alaska has extra risks from melting ice and earthquakes.
Experts say we need to be ready by making better warning systems, stronger buildings, and teaching people how to stay safe.
Study warns Alaska, Hawaii, and Washington face a high risk of megatsunamis within 50 years.
Megatsunamis can reach heights of up to 1,000 feet and are triggered by massive underwater events.
The Cascadia Subduction Zone poses a significant threat, with a 15% chance of a major earthquake in the next 50 years.
Alaska faces a dual threat from seismic activity and climate change-induced landslides.
Experts advocate for enhanced early warning systems, infrastructure improvements, and public education.
- Who
- Virginia Tech scientists and other experts
- What
- Potential for megatsunamis
- When
- Within the next 50 years
- Where
- Alaska, Hawaii, Washington, and the Pacific Northwest
- Why
- Due to seismic activity, geological events, and climate change impacts
- High-Risk States
- Alaska, Hawaii, Washington
- Megatsunami Trigger
- Large earthquakes, landslides, volcanic eruptions
- Cascadia Earthquake Chance (50 yrs)
- 15%
- Last Cascadia Rupture
- 1700
- Maximum Wave Height (Lituya Bay)
- 490 feet
