Old Faithful

Old Faithful

Upper Geyser Basin

Upper Geyser BasinUpper Geyser Basin

Biscuit Basin

Biscuit Basin

Mammoth Terraces

Mammoth Hot Spring Terraces WebcamMammoth Terraces

Boiling water in Giantess 13 Aug 2009 – one month prior to an eruption

Giantess Geyser Eruption - National Park Service Photo

Giantess Geyser Eruption – National Park Service Photo

Past Eruption Dates – Times

(additions or corrections, as always, are very welcome)

2002:

  • April 25
  • Dec 6

2003:

  • Feb 15 – Unknown activity?
  • April 22
  • June 27 – Short Steam Phase eruption
  • Sept 9
  • Oct 27-28 overnight

2004:

2005:

  • Jan 30
  • May 28
  • Oct 11

2006:

  • July 25

2007: No eruptions

2008:

  • May 8

2009:

2010:

  • Jan 30 – 1349 ie (ie = seen already in eruption)
  • July 26 – 2239

2011:

2012:

  • No eruptions

2013

  • No eruptions

2014

Jan 29 – 1444 E (electronic time taken from the Univ of Utah seismograph webicorder – Video of the start of the eruption

Infant Geyser <<<TOUR >>> Peanut Pool

Alphabetized List of Thermal Features: Old Faithful and Geyser Hill

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