This book covers the 1964 Alaska Earthquake (also known as the Good Friday Earthquake). On March 27, 1964, a 9.2 magnitude earthquake that lasted over four minutes struck near Anchorage. Something like 600 miles of fault line was involved in the rupture. This book went into great detail about how earthquakes and tsunamis occur, which was interesting but kind of got dull after pages and pages of explanation. I did learn about soil liquefaction, which I didn't know was a thing. The disturbances to the ground caused a lot of structural damage- building collapse, destroyed roads and bridges, the sewer and water lines were damaged, etc. Many areas were directly affected by the earthquake and resulting tsunami. Tsunami waves were reported in other countries, including Peru, Japan, and Mexico. Port Valdez suffered quite a bit of damage due to a landslide underwater that destroyed the docks and harbor. 32 people died here due to the event. Another nearby town, Chenega, was completely destroyed. At the time, there were 68 people living there. 23 of them died. The tsunami wave generated by the earthquake that hit Chenega was 27 feet high.
This book had a pretty concentrated focus on Crescent City, California. The tsunami finally reached the city on March 28, 1964, four hours after the initial earthquake. The first wave produced some localized flooding that residents were concerned about. The second and third waves were smaller, but the fourth wave to hit was massive. It is estimated that the wave was 21 feet high, though the measuring devices were damaged. (When I googled imaged of the damage, there were a couple of articles that came up that claim the wave was 75 feet. I think that was an exaggeration, because more than 60 blocks would have been affected.) The water in the harbor was sucked dry prior to the wave coming in. 1,000 cars were damaged, 30 city blocks were destroyed and 30 more were flooded, 289 buildings were destroyed, and many fishing boats and personal boats were destroyed. 12 people died, 100 were injured, and some people were missing and never found. The underwater geography of Crescent City had a lot to do with how much damage the tsunami caused, the location from the epicenter of the earthquake and the rivers in the city also factored into the damage. It was estimated that the damage was about $15 million dollars.
Overall, the book was engaging. I was really invested in the personal stories of the people mentioned in the books. I learned a lot about ocean geography and how earthquakes and tsunamis work, but that being at the beginning of the book was a little bit dull. I was ready to get to the meat and potatoes of the story. For that reason, I gave it a 3 star rating instead of a 4. I suppose it hadn't really crossed my mind that tsunamis happened in the United States, though I am not sure why since that whole West Coast is near fault lines and the Pacific Ocean. I guess most of the news articles I have seen or tsunamis that I have been alive for have occurred in Asian countries like Japan and Indonesia. I wasn't using my critical thinking skills.