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 on 4 May 2016 at about 1241.
  • Ledge Geyser in Norris Geyser Basin has not been seen in eruption since Yellowstone opened for the summer season.
  • A small unnamed geyser next to Green Spring at Black Sand Basin (Also Known as BSB-2) is active this spring.

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 5 2016, 10:56 pm MDT

Current Conditions:


Temp: 37°F

Wind: West at 3mph

Humidity: 70%

Dewpoint: 28.0°F

Your 5-Day Forecast at a Glance

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