Steamboat Geyser

Steamboat Geyser is the world’s largest active geyser, and Yellowstone National Park officials said it erupted last Thursday for the first time since September 2014. This photo shows a steam plume from the 2014 eruption.

The world's tallest active geyser has erupted for the third time in the last six weeks, Yellowstone National Park announced Friday afternoon. 

The park said in a news release that a visitor reported seeing Steamboat Geyser erupt early Friday morning. Park geologists believe the eruption began at about 6:30 a.m. 

It's Steamboat's third water eruption since March 15. The park's release said seismic data show Friday's eruption was roughly the same size as the one that occurred April 19. Both were larger than the eruption on March 15.

The geyser's last major eruption came in 2014.

Steamboat Geyser is in Yellowstone's Norris Geyser basin. The trail leading to the feature is closed because of deep snow on the boardwalks.

Michael Wright can be reached at or at 582-2638. Follow him on Twitter @mj_wright1. 

Michael Wright covers the environment and wildlife issues for the Chronicle.

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