How Fast Is Geyser Eruption?

Geysers erupt at 50 m/s — superheated water flashing to steam and exploding upward. Old Faithful in Yellowstone erupts every 90 minutes on average, sending its column 50 metres into the air with each blast.

Old Faithful erupts every 90 minutes on average — its column reaching 50 m, regular enough to schedule a lunch break around.

• Faster than a cheetah sprinting
• Old Faithful: every 90 minutes