When active it is the largest geyser in the Fountain Paint Pots area, but in most years it is inactive.

Morning's maximum height may reach 200 feet (61 m) and just as wide, although most eruptions are smaller.

Eruptions take the form of successive jets of water rather than a constant stream, many starting from a "blue bubble" resembling those observed at Fountain.

"[2] 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.

[4] No eruptions were recorded between October 2013 and August 2018; however, the geyser has again been active in the second half of 2018.