Welcome to Geyser Watch

An Online Field Journal - part of YellowstoneNaturalist.com

Watching water go the other way…

as well as many more not-quite-so-exciting thermal features of Yellowstone.

Take a virtual walk

on the boardwalks around Old Faithful Geyser and Geyser Hill.

Start the Tour


  • Fan and Mortar Geyser had its last known eruption sometime overnight 9-10 May 2016.
  • A small unnamed geyser next to Green Spring at Black Sand Basin (Also Known as BSB-2) is active this spring.
  • Economic Geyser has heated up over the past month.

If you do witness a rare eruption, I’d also like to hear from you.

News from Yellowstone Naturalist:

An excellent video by Yellowstone National Park Service


  • ...and across the bridge, hopped off and headed over to meet the other two coyotes. #Yellowstone

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NOAA Weather

Yellowstone Lake, WY

Last Updated on May 24 2016, 1:56 am MDT

Current Conditions:


Temp: 28°F

Wind: NW at 3mph

Humidity: 88%

Dewpoint: 25.0°F

Your 5-Day Forecast at a Glance

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