How Much Will The Ground Shake?
A Comparison with the
Loma Prieta Earthquake
For the cities indicated, each colored bar shows how many times stronger a magnitude 7 earthquake on the same-colored fault segment is likely to feel in relation to the Loma Prieta earthquake.
Example: A magnitude 7 earthquake on the northern Hayward fault segment is likely to cause shaking in Oakland that is about twelve times greater than shaking felt during the Loma Prieta earthquake.
October 17, 1989
Loma Prieta Earthquake
Magnitude 6.9
414 Homes Destroyed
14,000 people left homeless
Unretrofitted soft story homes, where garages occupy most of the ground floor increase the odds of building failure during an earthquake.
Source: USGS
"The Next Big Quake in the Bay Area"
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