1933 Long Beach earthquake

1933 Long Beach earthquake

Damage to the John Muir School, Pacific Avenue, Long Beach
Los Angeles
UTC time	1933-03-11 01:54:00
ISC event	905457
USGS-ANSS	ComCat
Local date	March 10, 1933 (1933-03-10)
Local time	5:54 P.M. PST[1]
Magnitude	6.4 Mw [2]
Depth	10 km (6.2 mi) [2]
Epicenter	33°37′52″N 118°00′00″W / 33.631°N 118.000°W / 33.631; -118.000 [3]
Fault	Newport-Inglewood Fault[4]
Type	Strike-slip[5]
Areas affected	South Coast (California) United States
Total damage	$40 million [1]
Max. intensity	MMI VIII (Severe) [1]
Peak acceleration	0.22 g [6]
Peak velocity	20 cm/s (est) [7]
Tsunami	No
Aftershocks	M5.4 on Oct 2 1933 [8]
Casualties	115–120 killed [1][9]

The 1933 Long Beach earthquake took place on March 10 at 5:54 P.M. PST south of downtown Los Angeles. The epicenter was offshore, southeast of Long Beach, California, on the Newport–Inglewood Fault.^[10] The earthquake had a magnitude estimated at 6.4 M_w, and a maximum Mercalli intensity of VIII (Severe). Damage to buildings was widespread throughout Southern California. It resulted in 115 to 120 fatalities and an estimated $40 million worth of property damage, equivalent to $941 million in 2023. The majority of the fatalities resulted from people running out of buildings exposing themselves to the falling debris.