N'ime ọnwa atọ n'afọ 1985, a chọpụtara obere ala ọma jijiji 3,000 n'akụkụ ugwu ọdịda anyanwụ nke ogige ahụ, n'oge ihe a na-akpọ igwe ala ọma jijiji, ma bụrụ nke e jikọtara ya na obere ọdịda nke Yellowstone caldera. Malite na Eprel 30, 2007, 16 obere ala ọma jijiji ruru ogo 2.7 mere na Yellowstone Caldera ruo ọtụtụ ụbọchị. Igwe ala ọma jijiji ndị a bụ ihe a na-ahụkarị, ma e nweela ụdị igwe 70 dị otú ahụ n'etiti 1983 na 2008. Na Disemba 2008, a tụrụ ihe karịrị ala ọma jijiji 250 n'ime ụbọchị anọ n'okpuru ọdọ mmiri Yellowstone, nke kachasị ukwuu na-atụle ogo 3.9. Na Jenụwarị 2010, a chọpụtara ihe karịrị ala ọma jijiji 250 n'ime ụbọchị abụọ. Ọrụ ala ọma jijiji na Yellowstone National Park ma na-aga n'ihu na-akọ akụkọ site na Program Earthquake Hazards nke U.S. Geological Survey.
ihe karịrị 250