What was the magnitude of the earthquake?

Question

The San Francisco Earthquake of 1906 resulted in a seismographic reading of 63,096 millimeters, 100 kilometers from its epicenter

Answer 1

estimates range from 7.7 to 8.3 magnitude

often estimate 7.9

for the April 18, 1906 earthquake

about 3,000+ dead, 80% of San Francisco destroyed

worst more deadly US earthquake, city fires for 3 days

supposedly predicted in 1903 by 7th Day Adventist Prophetess

Ellen G. White. She compared San Francisco and Oakland

to Sodom & Gomorrah soon to experience the Deity's wrath,

fire & brimstone

judgment

d= (Td/8)(100km)

d in cm

8 in seconds

63,096 ml seigmographic reading

100 km from epicenter

63096/8= 7887

78.86 magnitude= about 79