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
People watching Old Faithful Geyser


  • Yellowstone closed on November 2, 2015 and will open again (weather permitting) for the winter season on Dec 15, 2015.
  • Fan and Mortar Geyser It’s been confirmed, Fan and Mortar erupted at 2128 on 26 Oct 2015 – steam cloud seen on the streaming webcam. Previous eruption happened in the evening (at 1859) on 7 Oct 2015.
  • Ledge Geyser in Norris Geyser Basin was in a powerful steam phase on the morning of 22 Oct 2015, so had erupted sometime overnight. Go, Ledge!
  • Pot o’ Gold on Geyser Hill had a small eruption on 11 Oct 2015 about a foot high for a few seconds. This one hasn’t been reported in eruption in years.
  • Giant Geyser has erupted early in the morning on 28 Sept 2015. Learn how to watch for a Giant Geyser Eruption.
  • “Improbable” Geyser on Geyser Hill had a major eruption again on 18 August 2015 (if you witness an eruption, take photos and notify rangers) .

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


  • "Improbable Geyser" had a rare eruption today. Empty crater now. #GeyserWatch

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NOAA Weather

Yellowstone Lake, WY

Last Updated on Nov 27 2015, 7:56 pm MST

Current Conditions:


Temp: 2°F

Wind: West at 3mph

Humidity: 80%

Dewpoint: -2.9°F

Your 5-Day Forecast at a Glance

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