The Mercalli scale was designed to do just that The original scale was invented by Giuseppe Mercalli in 1902 and was modified by Harry Wood and Frank Neumann in 1931 to become what is now known as the ...

I Felt by very few people; barely noticeable. II Felt by a few people, especially on upper floors. III Noticeable indoors, especially on upper floors, but may not be recognized as an earthquake. IV ...

A magnitude 3.9 earthquake centered in Burbank sent weak shaking across the Los Angeles region Sunday night. The earthquake, which occurred at 10:13 p.m., brought “light shaking” — as defined by the ...