CD-ROM Aktief 1995 #3

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Notable California Earthquakes Location Richter Mercalli Date Long/Lat Magnitude Rating Deaths Comments 1769 Orange County ? X 0 Portola expedition. 28 Jul 117.8 33.9 Camped near Olive 1790 Owens Valley ? X 0 Major shock with the ? 118.1 36.6 appearance of scarps 1800 San Juan Bautista ? VII ? Up to six shocks a 11-31 Oct 121.6 36.9 day felt for 20 days 1800 San Diego 6.5 VII ? Damage at San Diego & 22 Nov 117.3 33.0 San Juan Capistrano 1803 San Diego ? VI-VII ? Damaged church in San 25 May 117.1 32.8 Diego 1806 Santa Barbara ? VI ? Damaged church in S. B. 25 Mar 119.7 34.4 1808 San Francisco ? VIII ? 18 shocks were felt from 21 Jun 122.5 37.8 21 Jun-17 Jul. Damage to Presidio of S.F. 1812 San Juan 6.9 VIII 40 Mission collapsed in S.J. 8 Dec Capistrano C. Damage in S. Gabriel & 117.9 33.7 S. Fernando 1812 Near Lompoc 7.1 VIII ? Damage in S.Barbara,La 21 Dec 119.9 34.2 Purisima,S.Inez & Ventura 1827 Ventura 5.5+ VI ? Damage to Mission in San 24 Sep 119.0 34.0 Buenaventura 1830 San Luis Obispo ? VI-VII ? Damage to the Mission & 120.6 35.5 other buildings in area 1836 San Francisco 6.8 VIII ? Ground rupture along 10 Jun Bay area Hayward fault from 122.2 37.8 S.Jose to S.Pablo 1838 San Francisco 7.0 IX ? Surface faulting from Jun Santa Clara S.Clara to S.Franciso 122.4 37.6 S.Andres fault zone 1841 Monterery ? VI ? Felt on board ships & 3 Jul 122.0 36.6 inland. Minor damage 1843 ? ? ? ? Large shock felt in 23 Jun ? Sou.Ca & Mexico 1851 San Francisco ? VI ? Also felt in Benicia & 15 May 122.4 37.8 Vallejo. Minor damage. 1852 * Lockwood Valley 7 ? ? Fissures 30 miles Oct-Nov Ventura County long in Lockwood Val- ley area 1852 Fort Yuma 6.5 IX ? Fissures were opened up 29 Nov 115.0 32.5 from which sand & water was issued. 1853 San Luis Obispo ? VI ? Minor damage.Shock also 1 Feb 121.1 35.6 on 17 Jan. 1853 Eureka ? VI+ ? Minor damage 23 Oct 124.2 40.8 1855 Gibsonville, 5.5 VI+ - Minor damage 25 Jan Nashville 120.3 39.5 1855 San Gabriel ? VIII ? Mission bells were 11 Jul 118.1 34.1 thrown down. 1855 Sonoma County 5.0 VI - Minor damage 27 Aug 122.5 38.1 1856 Monterey,SF 5.3 VI-VII - Minor damage 2 JAN 122.5 37.5 1856 San Francisco 5.5 VII - Felt as far as Mary- 15 Feb 122.3 37.5 sville 1856 Santa Ysabel ? VI - Also felt in San 21 Sep 117.0 33.0 Diego 1857 Fort Tejon 8 X- XI 1 Great shock on S.An- 9 Jan 119.8 35.3 dres fault. Felt over 400,000 sq. miles. Buildings & trees thrown down. 1857 San Juan 6.0 V-VI ? Felt in S.F. Minor 3 Sep 120.0 39.3 damage. 1858 San Jose 6.1 VII ? Felt in Downieville, 26 Nov 121.9 37.5 Mariposa, & Monterey 1858 San Bernardino ? IX ? Moderate damage. Felt 16 Dec 117.5 34.0 in L.A. 1859 San Francisco ? VI ? Minor damage 5 Oct 122.4 37.8 1860 Los Angeles ? V ? Minor damage 27 Jan 118.2 34.1 1860 Carson City, NV 6.3 VII ? Felt in S.F. and 15 Mar 119.5 39.5 Utah 1860 Eureka ? VII - Minor damage 13 Nov 124.2 40.8 1861 Dublin 5.6 VIII ? A fissure 8 miles 4 Jul 122.0 37.8 long. Moderate dam. 1862 San Diego 5.9 VII ? Minor damage. 100 27 May offshore aftershocks during 117.2 32.7 following week. 1863 San Francico 4.8 V-VI - Felt in S.Jose, Napa 19 Dec 122.2 37.5 Stockton & S.Cruz 1864 Monterey 5.9 VI - Felt in Napa, and 26 Feb 121.7 37.1 San Luis Obispo 1864 San Francisco 5.7 VI-VII - Felt in Visalia 5 Mar 122.0 37.7 1864 San Francisco 5.3 VI - Felt in Monterey & 21 May 122.1 37.6 Sacramento 1864 San Francisco 4.7 V - Minor damage. Felt 22 Jul 122.0 37.6 in San Jose 1864 Grass Valley 4.5 VI+ - Minor damage. Felt 18 Aug 121.0 39.3 in Yuba City. 1865 Bennett Valley 4.7 VII - Felt in Santa Rosa, 8 Mar 122.6 38.4 Petaluma, and S.F. 1865 San Juan Bautista 5.5 VI - Felt in southern S.F. 24 May 121.8 37.1 counties 1865 Eureka 5.4 VII - Felt in Humboldt & 1 Oct 124.1 40.8 Trinity counties 1865 San Francisco 6.3 IX ? Damage to buildings 8 Oct San Jose in SF, S.Jose & Santa 121.9 37.3 Clara 1866 Mendocino County 4.0 IV - Minor damage 16 Dec 123.1 38.8 1866 Gilroy 5.4 VII - Moderate damage 26 Mar 121.6 37.1 1866 West Stanislaus 5.8 V - Felt at Visalia, 15 Jul County Stockton, Sacramento 121.3 37.5 Marysville, Nev.City 1867 La Porte 4.0 V - Felt at Downieville 2 Dec 120.9 39.6 & Forest City 1868 Virginia City 5.9 VII - Moderate damage in 30 May 119.7 39.3 Virginia City 1868 Downieville 4.0 IV - Minor damage. Felt 2 Jun 120.8 39.5 in Forest City 1868 Visalia ? ? - 2 shocks felt in 25 Jul 119.3 36.3 Visalia 1868 Lone Pine ? VI+ - Swarm of quakes near 4-17 Sep 118.4 36.6 L.P. & the Kern River 1868 Monitor 5.2 VI+ - Felt in Alpine county 17 Sep 119.7 38.6 Sacramento & Nev.City 1868 Ukiah ? IV - Felt only in Ukiah 26 Sep 123.2 39.2 1868 Hayward 6.8 X 30 Damage in Hayward, S. 21 Oct 122.1 37.7 Leandro & East Bay. 1869 Ukiah 5.0 VII - Moderate damage. Felt 8 Oct 123.1 39.1 in Healdsburg 1869 Eureka 4.8 V-VI - Minor damage 21 Dec Sierra County 120.6 39.5 1869 Virginia City 6.1 VII-VIII ? Damage in V.C. & 27 Dec 119.7 39.4 Washoe City 1869 Virginia City 5.8 VII ? Minor damage 27 Dec 119.8 39.1 1870 Los Gatos 5.8 VII ? Moderate damage Felt 17 Feb 122.1 37.2 in Mont. & Sacramento 1870 S.F. & Oakland 5.3 VI - Minor damage. Felt in 2 Apr 122.3 37.9 S.Cruz,S.Rosa & Stock. 1871 Mattole 5.9 VIII - Major damage in Mattole 2 Mar 124.2 40.4 Moderate damage in Humboldt County 1871 Owens Valley 5.2 VI+ - Felt as far north as 5 Jul 118.0 36.4 Mariposa County 1872 Owens Valley 8 X-XI 27 Great shock 7 meter 26 Mar 118.1 36.7 scarp formed. Felt over 640,000 sq miles 1872 Owens Valley 6.5 V ? Aftershock felt in LA 26 Mar 118.2 36.9 and Oroville 1872 Sierraville 4.9 VI - Minor damage. Felt in 28 Mar 120.4 39.5 Reno, Nev. 1872 Owens Valley 6.1 V ? Aftershock, felt in 3 Apr 118.2 37.0 Visalia & Grass Valley 1872 Round Valley 6.6 IX ? Stone houses thrown 11 Apr 118.5 37.5 down.Felt in Susanville 1872 Owens Valley ? ? ? Aftershock, felt in 18 Apr 117.8 36.5 Cerro Gordo 1872 Yuma 5.5 VI-VII ? Moderate damage. 3 May 115.0 33.0 Felt in S.Bernardino 1872 Owens Valley ? VI - Aftershock from 26 Mar 17 May 118.1 36.6 1873 Smith River 6.7 VIII ? Damage at Crescent City 23 Nov Valley Grants Pass, Or. & Jack- 124.0 42.0 sonville, Oregon. 1875 Honey Lake Valley 5.8 VII ? Moderate damage in Jane- 24 Jan 120.5 40.2 sville & Susanville. 1875 Eureka 5.5 VII ? Moderate damage in 30 Sep 124.0 40.7 Humboldt County. 1876 Freestone 4.2 VI ? Minor damage in 29 May 122.9 38.4 Sonoma County. 1878 Petrolia 5.8 VIII ? Moderate damage in 9 May 124.0 40.1 Humboldt County 1881 Red Bluff 5.0 V-VI ? Felt in Tehama & 7 Jan 122.0 40.0 Butte Counties 1881 Imusdale 5.6 VIII ? Large cracks in road. 2 Feb 120.5 36.0 San Luis Obispo County 1881 West Stanislaus 5.9 VI - Minor damage from Stock 10 Apr County 121.4 37.4 ton to Hollister 1882 Hollister 5.7 VI ? Minor damage in Salinas 6 Mar 121.2 36.9 and Santa Cruz. 1883 Old Gilroy 5.6 VII - Moderate damage in Sar- 30 Mar 121.6 36.9 gents & Old Gilroy 1883 Santa Barbara 6.0 VI ? Minor damage to S.B. 5 Sep 119.9 34.2 & Los Alamos 1884 Eureka 5.7 V - Minor damage. Felt 28 Jan 123.6 41.1 in Fort Jones 1884 Santa Cruz 5.9 VI ? Minor damage in S.C. 26 Mar 122.2 37.1 & San Francisco 1884 Red Bluff 4.2 V - Felt in Tehama & 6 Jun 122.3 40.3 Shasta Counties 1885 Honey Lake Val. 5.7 VII-VIII ? Felt in Susanville & 31 Jan 120.6 40.4 Janesville 1885 Salinas(east of) 5.5 VII ? Felt in San Benito 31 Mar 121.3 36.7 County 1885 Salinas(east of) 5.4 V-VI ? Minor damage 2 Apr 121.4 36.8 1885 San Benito 6.2 VII ? Felt in Sacramento & 12 Apr 121.0 36.4 San Joaquin Valleys. 1885 Cloverdale 4.0 V-VI - Minor damage in Clo- 1 Aug 123.0 38.8 verdale, Sonoma Coun. 1887 Genoa, Nev. 6.3 VIII ? Moderate damage in 3 Jun 119.8 39.2 Carson City & Genoa. 1887 Halfway House 4.9 VII ? Moderate damage in 3 Dec 123.6 39.3 Mendocino County 1887 Mendocino 4.4 ? - Possibly aftershock 16 Dec 123.7 39.2 of 3 Dec earthquake 1888 Mendocino 4.9 V ? Felt in Ukiah & 18 Feb 123.6 39.2 Mendocino 1888 Petaluma 4.2 VI - Minor damage in 29 Feb 122.7 38.3 Petaluma 1888 Alturas 4.6 VI - Minor damage.Felt in 14 Apr 120.5 41.5 Cedarville 1888 Cromberg 5.9 VII ? Moderate damage in 29 Apr 120.7 39.7 Cromberg,N.Mohawk Val. 1888 Santa CLara Coun. 4.5 V - Felt in S.Francisco 17 Sep 121.8 37.1 & south of Salinas 1888 Oakland 4.3 VII ? Felt from Napa to 18 Nov 122.3 37.9 San Lorenzo 1889 Desert Hot 5.3 VI+ ? Minor damage in San 7 Feb Springs Jacinto. Felt in 116.7 34.1 Needles 1889 Santa Cruz 4.8 V-VI - Felt from Monterey to 15 Apr 121.9 37.1 Contra Costa Counties 1889 Collinsville 6.0 VIII ? Moderate damage in 19 May 121.9 38.0 Antioch & Collins. 1889 Susanville 5.9 VII ? Moderate damage in 20 Jun 120.7 40.5 Willow Creek & Sus. 1889 Oakland 5.2 VII ? Moderate damage in 31 Jul 122.2 37.8 San Leandro & Oak. 1889 Pomona 5.2 VI - Minor damage. Felt 28 Aug 117.9 34.1 in L.A. & Ontario. 1889 Round Valley 5.6 VI+ - Felt in Sacramento & 30 Sep 118.7 37.2 Bakersfield. 1890 N.E. San Diego 6.3 VI+ - Felt in L.A.,San Di- 9 Feb County ego, and Yuma. No 116.3 33.4 damage. 1890 Corralitos 6.0 IX 0 Railroad track & 24 Apr 121.6 36.9 bridge displaced. An- zar lake drained 1890 Alton 6.0 VII ? Moderate damage at 26 Jul 124.2 40.5 Grizzly Bluff & west- ern Humboldt County. 1891 Santa Cruz 5.5 VI ? Minor damage in San 2 Jan 121.8 37.3 Jose & Santa Cruz 1891 Napa 5.5 VIII ? Moderate damage in 12 Oct 122.4 38.3 Sonoma & Napa 1892 Cal\Mex border 6.7 VIII-IX ? Felt from Visalia to 24 Feb 116.3 32.7 San Quintin, B.C. 1892 Vacaville 6.4 IX 1 Ground ruptures at 19 Apr 122.0 38.4 Vacaville. Damage in Sacramento. 1892 Vacaville 6.2 IX ? Aftershock of 19 Apr. 21 Apr 121.9 38.5 Moderate damage. 1892 Vacaville 5.5 VI ? Aftershock of 19 Apr. 30 Apr 121.8 38.4 Minor damage. 1892 Ocotillo Wells 6.3 V-VI ? Felt in L.A., Yuma 28 May 116.2 33.2 San Bernardino 1892 San Bernardino 4.9 VI ? Felt in L.A., San 14 Jun 117.5 34.2 Diego & Cucamonga 1892 Hollister 5.6 VII ? Moderate damage in 13 Nov 121.5 36.8 Hollister 1893 Newhall 5.4 VIII ? Moderate damage. 4 Apr 118.6 34.3 Felt in Simi Valley 1893 Channel Islands 5.5 V-VI - Minor damage in Ventura 19 May 119.4 34.1 Felt in Santa Maria & San Bernardino 1893 S.F. Bay Area 4.6 V-VI ? Minor damage in Vallejo 30 Jun 122.4 38.0 San Rafael. 1893 Santa Rosa 5.1 VII - Moderate damage in 9 Aug 122.6 38.4 Santa Rosa 1894 NW San Bernardino 5.9 VI+ - Minor damage in L.A. 30 Jul 117.6 34.3 & Mojave, Kern Coun. 1894 S.Humboldt Coun. 5.8 VII - Felt in Crescent City 30 Sep 123.7 40.3 & Mendocino. 1894 San Diego Coun. 5.7 VII - Felt in San Diego & 23 Oct 116.8 32.8 San Juan Capistrano 1896 Independence 5.9 VIII ? Moderate damage in 17 Aug 118.3 36.7 Independence 1897 Gilroy 6.2 VIII ? Moderate damage in 20 Jun 121.5 37.0 San Felipe & Gilroy 1898 Mare Island 6.2 XI ? $350,000 damage to 31 Mar 122.4 38.2 Naval Yard. $1.4 mil- lion damage to S.F. 1898 Mendocino County 6.4 IX ? Large shock.Landslides, 15 Apr 123.8 39.2 houses collapsed. 1899 Humboldt County 5.7 VI ? Felt from Crescent City 16 Apr Offshore to Mendocino 124.4 41.0 1899 Watsonville 5.6 VII ? Moderate damage in 30 Apr 121.7 36.9 Green Valley & Watson. 1899 San Francisco 5.4 VII ? Moderate damage in S.F 2 Jun 122.5 37.7 & Oakland 1899 Santa Clara Coun. 5.8 VIII ? Moderate damage in Wat- 6 Jul 121.5 37.2 sonville & Pleasanton 1899 Cajon Pass 5.5 VII O Damage to S.Bernardin 22 Jul 117.4 34.2 Highland & Patton 1899 Cajon Pass 6.5 VIII ? Felt from Anaheim to 22 Jul 117.5 34.3 Barstow. 1899 Santa Rosa 4.0 VII ? Moderate damage in 13 Oct 122.7 38.4 Santa Rosa 1899 San Jacinto 6.6 XI 6 Damage to S.Jacinto, 25 Dec 117.0 33.8 Hemet,S.Bernardino, & Riverside 1901 Parkfield 5.8 VI 0 Surface cracks 100's 3 Mar 120.5 36.0 of feet long near S. Andres fault zone 1902 Vacaville 5.4 VI ? ? 19 May 121.9 38.3 1902 Los Alamos 5.4 VII 0 Heavy shocks lasted 27 Jul 120.4 34.8 until 31 Jul.Damage in Lompoc 1902 Los Alamos 5.4 VII 0 Aftershock of 27 Jul 31 Jul 120.3 34.7 1903 Santa Clara 5.8 VII ? ? 11 Jun 121.9 37.4 1903 Santa Clara 5.8 VII ? ? 3 Aug 121.8 37.3 1906 San Francisco 8.3 XI 600+ Felt over 375,000 sq 18 Apr 122.5 37.7 miles. $1 Billion dam age. Trees damaged near Loma Prieta 1906 Brawley 6.0 VII ? ? 19 Apr 115.5 32.9 1907 San Bernardino 6.0 VII ? Felt from San Diego 19 Sep 117.1 34.2 to Santa Barbara 1908 Ballarat 6.5 VI ? Inyo County 4 Nov 117.0 36.0 1909 Bloomfield 5.7 VI ? Nevada County 23 Jun 120.8 39.4 1909 Alton 6.4 VII+ ? Humboldt County 29 Oct 124.2 40.5 1910 Watsonville 5.5 VI 0 Felt over 50,000 sq. 11 Mar 122.8 36.9 miles 1910 Humboldt County 6.0 ? 0 Offshore 19 Mar 125.0 40.0 1910 Bishop 5.6 V+ ? Inyo County 6 May 118.42 37.33 1910 Temescal VI+ ? Riverside County 15 May 117.4 33.7 1911 Coyote 6.6 VII 0 Felt over 60,000 sq. 1 Jul 121.75 37.25 miles 1912 Bishop 5.5 ? ? Inyo County 5 Jan 118.42 37.33 1914 Reno, Nev. 6.4 ? ? ? 24 Apr 119.8 39.5 1914 Los Gatos 5.5 VI ? Santa Clara County 9 Nov 122.0 37.17 1915 Los Alamos 5.5 VI+ ? Santa Barbara County 12 Jan 120.2 34.6 1915 Imperial Valley 6.3 VIII 6 $1 million damage. 22 Jun 115.5 32.8 Felt over 50,000 sq. miles 1915 Baja Calif. 7.1 ? ? ? 21 Nov 115.0 32.0 1916 Paicines 5.5 VI ? San Benito County 6 Aug 121.25 36.67 1916 Tejon Pass 6.0 VI+ 0 Felt from San Diego 22 Oct 118.9 34.9 to Fresno 1917 El Centro 5.5 ? ? Imperial County 28 May 115.3 32.8 1918 San Jacinto 6.8 VII+ 1 Felt over 150,000 sq. 21 Apr Hemet miles. Largest earth- 117.0 33.8 since 1906 1918 Humboldt County 6.5 ? ? Offshore 15 Jul 125.0 41.0 1922 Cholame Valley 6.3 VII ? San Luis Obispo 10 Mar 120.25 35.75 Monterey Counties 1923 Cape Mendocino, 6.5 VII 0 Felt over 400,000 sq. 22 Jan offshore miles. Centered 90 mi 124.5 40.5 west of Eureka 1923 Riverside 6.0 VI 0 Felt over 70,000 sq. 23 Jul 117.3 34.0 miles. 1923 Baja Calif. 5.5 ? ? ? 7 Nov 115.5 32.5 1925 Humboldt Coun. 6.0 ? ? Offshore 4 Jun 125.0 41.5 1925 Santa Barbara 6.3 VIII 13 Felt over 100,000 sq. 29 Jun offshore miles. $8 million 119.8 34.3 damage. 1926 Santa Barbara 5.5 ? ? ? 29 Jun 119.5 34.5 1926 Monterey 6.1 VI+ ? offshore 22 Oct 122.35 36.61 1927 Baja Calif. 5.8 ? ? ? 1 Jan 115.5 32.5 1927 Inyo\Mono border 6.0 ? ? ? 18 Sep 118.75 37.5 1927 Lompoc 6.4 VII ? Damage to Lompoc & 4 Nov offshore from Surf to Alright 120.8 34.7 1929 Independence 5.5 ? ? ? 28 Nov 118.19 36.9 1932 Humboldt County 6.4 ? 1 Effect strongest at 6 Jun offshore Aracta 124.5 40.75 1932 Nevada State 7.2 ? ? ? 21 Dec 118.0 38.75 1933 Long Beach 6.3 VII+ 115 Major damage in Comp- 10 Mar offshore ton & N.Long Beach 117.97 33.62 $6 million damage 1933 Nevada State 6.1 ? ? ? 25 Jun 119.33 39.08 1934 Nevada State 6.3 ? ? ? 30 Jan 118.36 38.28 1934 Parkfield 6.0 VI+ 0 2 shocks. Surface 6 Jun 120.83 35.8 cracking N. of Park. 1934 Baja Calif. 6.5 ? ? ? 30 Dec 115.5 32.25 1934 Baja Calif. 7.1 ? ? ? 31 Dec 114.75 32.0 1935 Baja Calif. 6.0 ? ? ? 24 Feb 115.2 31.41 1937 N\E San Diego 6.0 ? ? ? 25 Mar County 116.26 33.41 1939 Hollister 5.5 VI+ ? ? 24 Jun 121.45 36.8 1940 Chico 5.7 ? 0 Felt over 28,000 sq. 8 Feb 121.6 40.0 miles. 1940 Imperial Valley 6.7 VII+ 9 $6 million damage 18 May 115.5 32.73 32 mi. displacement 1941 30 Jun Santa Barbara 5.9 VI+ 0 $100,000 damage offshore 119.58 34.37 1941 Mammoth Lakes 5.8 & 6.0 VI ? Felt over 36,000 sq. 14 Sep 118.73 37.57 miles. 2 shocks.1643 & 1839 GMT 1941 Torrance 5.5 VI 0 $1 million damage 14 Nov Gardena 1941 Eureka 6.4 ? 0 Felt over 12,000 sq. 3 Oct offshore miles 124.8 40.4 1942 Borrego Valley 6.5 V+ 0 Minor damage 21 Oct 116.0 32.97 1946 Walker Pass 6.1 VI+ 0 Minor damage 15 Mar 118.06 35.73 1947 Manix 6.3 VI+ 0 Minor damage 10 Apr 116.55 34.98 1948 Desert Hot 6.2 VI+ 0 Minor damage 4 Dec Springs 116.38 33.93 1948 Sierraville 6.0 VI+ 0 Felt over 40,000 sq. 29 Dec 120.08 39.55 miles. Felt strongly in California 1949- Terminal Island Low - 0 Small earthquakes due 1961 Wilmington to withdrawal of oil & gas. 1950 Herlong(Ft.Sage) 5.6 ? 0 Minor damage 1952 Arvin 7.7 X 14 Felt over 160,000 sq. 20 Jul Tehachapi miles. $55 million damage. 3 aftershocks above magnitude 6 1952 Bakersfield 5.8 VIII 2 35 people injured. 22 Aug $10 million damage 1954 Eureka-Arcata 6.5 ? 1 Felt over 50,000 sq. miles.$2 million dam. 1957 San Francisco 5.3 VIII 0 $1 million damage to 22 Mar homes in Daly City 1960 Chile 8.6 ? none Tsunami caused 500,000 21-22 May in Ca damage to west coast of California 1961 Hollister 5.6 VII 0 $250,000 damage 8 Apr 1964 Alaska 8.5 ? 11 Tsunami caused $11 27 Mar million damage along Ca coast. 11 killed in Crescent City 1966 Parkfield 5.5 ? 0 Surface faulting at 27 Jun Cholame-Parkfield for over 20 miles. 1966 Boca N. of 6.0 ? 0 Minor damage Truckee 1968 Borrego Mountain 6.5 ? 0 Minor damage 1969 Santa Rosa 5.6 & 5.7 VII-VIII 0 $10 million damage 1 Oct in Santa Rosa 1971 San Fernando 6.4 VIII-XI 58 $500 million damage 9 Feb Felt over 230,000 sq. miles. 1975 Oroville 5.7 IX 0 Felt over 120,000 sq. 1 Aug miles.$3 million dam. 1979 Coyote Lake 5.9 VII 0 $500,000 damage 6 Aug 1979 Imperial Valley 6.6 IX 0 $30 million damage 15 Oct 91 injured 1980 Livermore 5.5 VII 0 $11 million damage 24&26 Jan 50 injured 1980 Mammoth Lakes 6.0-6.2 VII 0 $2 million damage 25 May 13 injured. 4 shocks 27 May 6.1, 6.0, 6.1, 6.2 1980 Northern Ca 7.1 VII 0 Felt over 97,000 sq. 8 Nov off shore miles.$2 million dam. 1983 Coalinga 6.3 VIII 0 $31 million damage. 2 May 45 injured 1987 Whittier 5.9 VII ? ? Narrows 1989 Santa Cruz 7.1 X 63 $5.6 billion damage 17 Oct Mountains severe damage in S.F. marina district & the downtown mall in Santa Cruz. 1992 Desert Hot 6.3 ? Damage at Josua Tree 22 Apr Springs 1992 Petrolila 6.5 IX 0 Moderate damage 25 Apr Cape Mendocino 1992 Landers 7.5 VIII 1 Largest magnitude in 28 Jun Big Bear U.S. in 40 years 1993 Eureka Valley 6.2 ? 0 Minor damage 17 May 1994 Northridge 6.7 55 $15-$30 Billion 17 Jan damage Minor damage - Means cracks in walls, plaster, and objects falling from shelves. Moderate damage - Means chimneys knocked down and large cracks in walls. * Difficult to say if this earthquake happened in Ventura County. No damage reports from L.A., Santa Barbara, or Ventura. A earthquake this size and ruptures this long should of been felt in the above towns. One report (Holden 1898) states that there was 11 shocks at San Simeon, L.A., San Gabriel, San Luis Obispo, San Diego, and the Colorado River on 26 Oct 1852. Another report (Trask 1856) states that the 11 shocks were felt at San Simeon, L.A., and San Gabriel on 26 Nov 1852. Holden (1898) reports that on 27-30 Nov 1852 earthquakes produced fissures 30 miles long in Lockwood Valley. There is a Lockwood Valley in Ventura and Monterey counties. Harry O. Wood preferred the Lockwood Valley in Ventura County for these fissures.(Townley & Allen 1993) Earthquakes felt at San Simeon, San Luis Obispo and in the San Joaquin Valley were reported in early 1853. An earthquake in Monterey County could have been felt by these areas. The Big Pine fault (Lockwood Valley) in Ventura County (an extention of the Garlock fault) could surely produce a magitude 7 shock.