San Francisco Public Press
New Tsunami Maps Show More Widespread Potential Flooding Than Previous Ones
Rick Wilson stands in front of a 1930s-era “tsunami stone” in Aneyoshi Bay, Japan, that warns residents not to live below its elevation at 150 feet in August 2011. The tsunami that hit Japan that year flooded areas of up to 130 feet in elevation. Because they heeded the warning of the stone, the people in this community were safe, Wilson said.
The California Geological Survey creates maps showing which areas scientists expect a major tsunami would flood. The latest update of this map shows that broader swaths of the Bay Area are likely to be affected than previous maps indicated — for example, the San Francisco Zoo is now in an evacuation zone. Rick Wilson, a senior engineering geologist with the California Geological Survey and manager of its tsunami program, joined “Civic” to outline some tsunami basics and explained how and why these maps are made and updated.
A segment from our radio show and podcast, “Civic.” Listen daily at 8 a.m. and 6 p.m. on 102.5 FM in San Francisco, and subscribe on Apple, Google, Spotify or Stitcher.
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