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<br /> Hazard Mitigation Plan | 2022 <br />Earthquake Hazards <br />- 50 - <br />Table: Modified Mercalli Intensity Scale <br />(Source: USGS) <br /> <br /> <br />Q&A | ELEMENT B: HAZARD IDENTIFICATION AND RISK ASSESSMENT | B2a. <br />Q: Does the plan include information on previous occurrences of hazard events for each jurisdiction? <br />(Requirement §201.6(c)(2)(i)) <br />A: See Previous Occurrences of Earthquakes in the City below. <br /> <br />Previous Occurrences of Earthquakes in the City <br />The most significant earthquake to impact the City was the 1933 <br />Long Beach earthquake. On March 10, 1933, the Newport- <br />Inglewood Fault ruptured with a magnitude 6.4 earthquake. <br />Santa Ana suffered substantial structural damage from the event, <br />especially on 4th street (as seen in adjoining photo). Santa Ana <br />suffered 3 of the 4 deaths occurring in Orange County during this <br />earthquake. All 3 of the deaths all occurred in downtown Santa <br />Ana. The original Santa Ana City Hall and the original Santa Ana <br />High School, the first high school opened in Orange County, were <br />both destroyed by this earthquake. <br /> <br />The City has experienced multiple earthquakes since then, but <br />none have had the same devastation. <br /> <br /> <br />