New tsunami hazard maps highlight threat facing seven California counties — even Napa

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For the first time since 2009, the California Geological Survey has released new tsunami hazard area maps for Ventura, San Diego, Marin, Napa, Santa Cruz, Solano and Sonoma counties to help residents better understand the risks from a tsunami and how to best plan for a potential evacuation.

In a news release, the state geological agency said the updated maps for the seven counties included new data and improved computer modeling since an earlier series of maps was published 13 years ago, as well as threats from tsunamis originating far away and locally. Thirteen other counties, including Los Angeles and Orange, received new updates over the last year, according to the agency.

“The good news is we haven’t seen full-scale large changes on the maps,” said Rick Wilson, senior engineering geologist and head of the California Geological Survey’s tsunami unit. “It’s just a good opportunity for people to go our website and check out if their area has changed, and plan appropriately.”

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