Waxaa la ogaaday in dhulgariirro yaryar oo gaadhaya ilaa 2.7 ay ka dhaceen Yellowstone Caldera dhowr maalmood. Laga bilaabo Abriil 30, 2007, 16 dhulgariir oo yaryar oo cabirkoodu gaadhayo 2.7 ayaa ka dhacay Yellowstone Caldera dhowr maalmood. Dhulgariirrada dhulgariirku waa caadi, waxaana jiray 70 nooc oo noocan oo kale ah intii u dhaxeysay 1983 iyo 2008. Bishii Diseembar 2008, in ka badan 250 dhulgariir ayaa la cabiray muddo afar maalmood ah oo hoos yimaada harada Yellowstone, kan ugu weyn ee cabirkiisu yahay 3.9. Bishii Janaayo 2010, in ka badan 250 dhulgariir ayaa la ogaaday muddo laba maalmood ah. Dhaqdhaqaaqa dhulgariirka ee Yellowstone National Park oo ay sii wadaan warbixinnada saacadaha ee Barnaamijka Khatarta Dhulgariirka ee US Geological Survey.
wax ka badan 250