California earthquake history 1988. First it was followed by an unusually small number of aftershocks for a quake of its magnitude the largest of which was hardly noticable only a magnitude 24 unless the montebello earthquake is considered an aftershock of this event. 1857 01 09 fort tejon california m 79 2010 01 10 offshore northern california m 65. They estimated that their historical catalog is probably complete for the san francisco bay region and central sierra nevada from 1850 on for earthquakes of m 6.
List of notable and major california earthquakes californias earthquake history. The services doc provides are designed to balance todays needs with tomorrows obligations by fostering the wise use and conservation of energy land and mineral resources. The pasadena earthquake ml 49 occurred on 3 december 1988 at a depth of 16 km.
The hypocenters of the earthquake and its aftershocks define a east northeast striking steeply northwest dipping surface that projects up to the active surficial trace of the raymond fault. California department of conservation administers a variety of programs vital to californias public safety environment and economy. On october 1 a 61 magnitude earthquake jolted whittier and the surrounding area for a full 30 seconds violently shaking people out of their beds and causing unsecured items to.
Other sources for the occurrence of earthquakes usually came from. All times are listed in coordinated universal utc time january. Apart from its effects on local residents this quake was notable for a few seismological details.
Californias earthquake history below is a list of the historical earthquakes in california they are listed by month. Although the written history of california is not long records of earthquakes exist that affected the spanish missions that were constructed beginning in the late 18th century. In early 1988 the working group for california earthquake probabilities wgcep made several statements regarding their forecasts for the 225 mi 360 km northern san andreas fault segment the 56 mi 90 km san francisco peninsula segment and a 18822 mi 3035 km portion of that segment which was referred to as the southern santa cruz mountains segment.
Printed accounts of earthquakes have been extensively used notably by toppozada and others 1988 to quantify the seismicity of california from 1850 onward. Although earlier earthquakes have been documentedsuch as significant movement on the southern san andreas fault all the way back to the 1600sthe earliest reported earthquake in california was on july 28 1769 noted by members of a spanish expedition to chart a land route from san diego to monterey. M l 47 depth.
79 km fault involved.