Last Known Eruption
19y 130d 15h 59m ago

Latest Eruptions

Eruption DurationInterval
14 Jul 1999 @ 0030 A1y 340d 9h 46m
07 Aug 1997 @ 144460-90s22y 15d 19h 4m
28 Jul 1975 @ 19405m
28 Jul 1975 @ 1935

Interval Statistics

Interval Count3
Min5m
Max22y 15d 19h 4m
Mean7y 362d 1h 38m
Median1y 340d 9h 46m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10191 14 Sep 2018 @ 0840 --- Micah Kipple In heavy ovf with convection over the vent.
9826 22 Aug 2018 @ 1451 --- Janet White Overflowing and convectionover the vent.
9451 03 Aug 2018 @ 2002 --- Tara Overflowing nicely but no convection over the vent.
9410 02 Aug 2018 @ 0811 --- JSJ In gentle overflow.
8842 22 Jun 2018 @ 1350 --- Janet White In overflow with good convection over the vent.
8379 31 May 2018 @ 2020 --- Stephen_Gemar Overflowing heavily, more so than my previous observations.
8351 30 May 2018 @ 1042 30 May 2018 @ 1052 Stephen_Gemar Economic continues to intermittently overflow, with heat rising from the vent.
8317 28 May 2018 @ 0945 28 May 2018 @ 1005 Stephen_Gemar Economic had 2-3 cycles of intermittent overflow during observation period, and had heat rising from the vent, enough to create a little convection.
8272 22 May 2018 @ 1919 22 May 2018 @ 1949 Tara At 1919 water level was so low that it was not covering the bacteria on the north side of the crater. At 1947, it was overflowing heavily. At 1949, it returned to the lower water level.
8039 28 Apr 2018 @ 1734 --- Micah Kipple Economic is intermittent on periods of likely more than an hour, but high points include convection and some ebullition above the vent.
8022 28 Apr 2018 @ 0621 --- Micah Kipple Vent white hot with noticeable convection. Outer North pool edge orange for a width of 20-40 cm, discharge has cut two new channels to the south but these have been here since when I first saw it on Friday.
4036 03 May 2017 @ 1702 --- Archer Killed and lifted some of its bacteria mat; center of vent is blue/green.
No attachments for this geyser.
Baseline does not exist.


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