A magnitude 7.9 earthquake struck the coast of Northern California at 05:12 am Pacific Standard Time on Wednesday, April 18, 1906. With a maximum Mercalli intensity of XI, it created high-intensity sh
Ruins in the vicinity of Post and Grant Avenue
Damaged houses on Howard Street
Seismographs on the U.S. east coast recorded the earthquake some 19 minutes later. Some early death estimates exceeded 500.
Arnold Genthe's photograph, looking toward the fire on Sacramento Street
The Modified Mercalli intensity scale measures the effects of an earthquake at a given location. This is in contrast with the seismic magnitude usually reported for an earthquake.
1906 San Francisco earthquake
…A magnitude 7.9 earthquake struck the coast of Northern California at 05:12 am Pacific Standard Time on Wednesday, April 18, 1906. With a maximum Mercalli intensity of XI (Extreme), it created high-intensity shaking from Eureka on the North Coast to the Salinas Valley, an agricultural region to the south of the San…
Lisbon, Portugal, during the Great Lisbon earthquake in 1755