Historic Tsunami

2009 United States of America Tsunami

25 August 2009 · Columbia River Valley, Wa · United States of America

On 25 August 2009, a tsunami formed near Columbia River Valley, Wa, United States of America. It was caused by a landslide. Waves reached up to 3.6 m high. It was observed at 1 location.

Date

25 August 2009

Cause

Landslide

Highest Wave

3.6 m

Observation Sites

1

Furthest Reach

1 km

Injuries

2

Estimated Damage

0 million US dollars

Source Country

United States of America

Highest Waves

• 3.6 mPorcupine Bay Campground, Wa · United States of America · 1 km

Other Major Tsunamis in the Region

• 2007Chehalis Lake, Chilliwack, Canada · 38.0 m
• 1980Washington, United States of America · 250.0 m61 deaths
• 1952Columbia River Valley, Wa, United States of America · 19.8 m
• 1949Columbia River Valley, Wa, United States of America · 19.8 m
• 1949Puget Sound, Wa, United States of America8 deaths
• 1905Thompson River, Canada · 6.0 m15 deaths

Sources: NOAA National Centers for Environmental Information, Global Historical Tsunami Database (doi:10.7289/V5PN93H7) · Natural Earth