Rubuta ci gaba don wannan sakin layi - Los Angeles tana fuskantar girgizar ƙasa saboda matsayinta a kan Pacific Ring of Fire. Rashin kwanciyar hankali na ƙasa ya haifar da kurakurai da yawa, waɗanda ke haifar da kusan girgizar ƙasa 10,000 a kowace shekara a Kudancin California, kodayake yawancinsu ba su da yawa don a ji su. Tsarin San Andreas Fault, wanda yake zaune a kan iyakar tsakanin Pacific Plate da Arewacin Amurka, ya wuce ta yankin Los Angeles. Sashin ɓangaren da ke wucewa ta Kudancin California yana fuskantar babban girgizar ƙasa kusan kowace shekara 110 zuwa 140, kuma masana kimiyyar girgizar ƙasa sun yi gargaɗi game da "babban" na gaba, kamar yadda girgizar ƙasa ta ƙarshe ita ce girgizar ƙasa ta 1857 Fort Tejon. Yankin Los Angeles da yankin birni ma suna cikin haɗarin girgizar ƙasa. Manyan girgizar asa da suka afkawa yankin Los Angeles sun hada da 1933 Long Beach, 1971 San Fernando, 1987 Whittier Narrows, da kuma abubuwan da suka faru na 1994 Northridge. Amma wasu daga cikinsu ba sa da ƙarfi sosai kuma ba a jin zafin. USGS ta fitar da hasashen girgizar kasa na UCERF na California, wanda ke nuna alamun girgizar kasa a California. Sassan birnin kuma suna da saukin kamuwa da tsunami; yankunan tashar jiragen ruwa sun lalace ta raƙuman ruwa daga girgizar kasa na tsibirin Aleutian a 1946, girgizar kasa ta Valdivia a 1960, girgizar kasa ta Alaska a 1964, girgizar kasa ta Chile a 2010 da girgizar kasa ta Japan
a shekara ta 2011.