"Despite the terrifying image of a 500-foot wave about to wash over the Golden Gate Bridge, tsunamis do not actually pose a considerable threat to the Bay Area.
...
Even San Francisco’s infamous 1906 earthquake generated only a 4-inch wave at the Presidio gauge station.
...
Although it’s unlikely, Steven Ward, a professor of Earth & Planetary Sciences at UC Santa Cruz, has created a series of animations to show how a big tsunami might spread through San Francisco Bay.
In Ward’s simulations, the incoming wave stands just over 16 feet tall. This is much larger than historical tsunamis, but Geist agrees that a wave this size is theoretically possible.
...
The original wave and splashbacks from shore would then start to pile up as they squeeze through the 1-mile-wide Golden Gate Strait. In Ward’s simulations, the wave reaches a maximum height of about 30 feet.
...
Finally, the wave would fan out into San Francisco Bay. Parts of Mission Bay and the Marina could see significant flooding, but by the time it reached Treasure Island or the East Bay, the wave would be less than 3 feet tall. It would probably not even make it to the South Bay."
https://ww2.kqed.org/news/2015/08/05/what-would-really-happen-if-a-tsunami-hit-san-francisco/
...
Even San Francisco’s infamous 1906 earthquake generated only a 4-inch wave at the Presidio gauge station.
...
Although it’s unlikely, Steven Ward, a professor of Earth & Planetary Sciences at UC Santa Cruz, has created a series of animations to show how a big tsunami might spread through San Francisco Bay.
In Ward’s simulations, the incoming wave stands just over 16 feet tall. This is much larger than historical tsunamis, but Geist agrees that a wave this size is theoretically possible.
...
The original wave and splashbacks from shore would then start to pile up as they squeeze through the 1-mile-wide Golden Gate Strait. In Ward’s simulations, the wave reaches a maximum height of about 30 feet.
...
Finally, the wave would fan out into San Francisco Bay. Parts of Mission Bay and the Marina could see significant flooding, but by the time it reached Treasure Island or the East Bay, the wave would be less than 3 feet tall. It would probably not even make it to the South Bay."
https://ww2.kqed.org/news/2015/08/05/what-would-really-happen-if-a-tsunami-hit-san-francisco/