Seattle is located very close to the Cascadia subduction zone, where earthquakes of magnitude 9.0 have occurred in the past. The San Andreas fault which bypasses San Francisco, is not capable of such an earthquake due to it being a transform fault, where the maximum magnitude would be about 7.8-8.0.
100 times
The maximum ground motion of a magnitude 5 earthquake is 100 times larger than a magnitude 3 earthquake.
10 times larger
A magnitude 9.2 earthquake is 794 times bigger on a seismograph than a 6.3 nut is 22387 times stronger in terms of energy released.
This is not a record of a Magnitude 8 or Greater Earthquake during the year
This is not a record of a Magnitude 8 or Greater Earthquake during the year
This is not a record of a Magnitude 8 or Greater Earthquake during the year
This is not a record of a Magnitude 8 or Greater Earthquake during the year
This is not a record of a Magnitude 8 or Greater Earthquake during the year
This is not a record of a Magnitude 8 or Greater Earthquake during the year
This is not a record of a Magnitude 8 or Greater Earthquake during the year
This is not a record of a Magnitude 8 or Greater Earthquake during the year