The first recorded eruptions of Morning Geyser were in 1899 , at which time it was called " New Fountain Geyser . " Eruptions were rare until 1959 , when the 1959 Hebgen Lake earthquake ( just outside the park ) caused significant changes in the activity in the Fountain Paint Pots group of springs . Morning was comparatively active from 1991 through 1993 but then erupted only rarely until 2012 . Reactivation occurred in that year , and eruptions were more frequent in late 2012 and 2013 , with intervals as short as 6 hours , although more typical intervals ranged from 11 hours to several days . No eruptions were recorded between October 2013 and August 2018 ; however , the geyser has again been active in the second half of 2018
1959 Hebgen Lake earthquake
1959 Hebgen Lake earthquake
Morning Geyser