An underwater volcanic eruption in Tonga sent a small but damaging series of tsunami surges toward the California coast in January.
Mapping Tsunami Hazards in California: When Experience Meets Expertise
Nick Graehl, engineering geologist in California Geological Survey’s Tsunami Program, often reflects on his first post-tsunami reconnaissance trip as a reminder of the importance of preparing Californians for a tsunami. “It’s something not everyone gets to experience but then once you have, you never forget.” From Studying to Experiencing Tsunami Effects A post-tsunami reconnaissance trip,…
2011 Tohoku-Oki Earthquake and Tsunami: Remembering the Victims, Learning from the Past
March 11, 2021: The California Geological Survey issues new Tsunami Hazard Area Maps for Del Norte and Mendocino counties By Rick Wilson, California Geological Survey (CGS) Many of my tsunami and non-tsunami colleagues can remember what they were doing on March 11, 2011, the day the magnitude 9 Tohoku-Oki earthquake struck offshore of Japan, unleashing…
Explore CGS’ New Tsunami Inundation and Evacuation Maps for Humboldt County
This week, California Geological Survey (CGS) — which provides geologic and seismic expertise to the public and other government offices — released two tsunami hazard maps for Humboldt County: one tsunami inundation map and one tsunami evacuation map.