World's Tallest Geyser Erupts Unexpectedly in Yellowstone

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Steamboat Geyser May-23, 2005

Previous major eruption on May 23, 2005

Wednesday, Sept 3, 2014: Steamboat Geyser in Yellowstone's Norris Back Basin erupted unexpectedly Wednesday evening. Rosa Prasser, a Yellowstone Ranger, witnessed the eruption at 11:00 pm.

The last time Steamboat had a major eruption was in July, 2013. In the past, Steamboat has gone 50 years without a major eruption, and in 1964, it erupted a record 29 times.

Steamboat Geyser is the world's tallest geyser and can shoot hot water up to 380 feet in the air. This phase of the eruption can last from a few minutes, up to 40 minutes. Wednesday, it lasted for several minutes. After the eruption, the geyser will shoot steam for 1-2 days.

What's it like to witness an eruption of the world's largest active geyser? Watch the video below to hear three employees share their story from the night of September 3, 2014.

The Weather Channel reported on the previous 2013 eruption with this YouTube Video.

Related: Extreme Geysers in Norris' Back Basin | Geothermal Features Constantly Changing in Yellowstone