Is Old Faithful Geyser Yellowstone Park slowing down and becoming less “faithful”?
A. Old Faithful went from 21 eruptions a day to 20 a day after the 1959 earthquake, which is not much of a slowdown, depending on how you look at it. Scientists feel it’s a considerable slowdown, but visitors rarely see a difference. Eruptions can be predicted within about a ten-minute variation.
