Last Known Eruption
56d 5h 38m ago

Interval Statistics

Interval Count15
Min4m
Max14y 228d 10h 11m
Mean1y 313d 19h 38m
Median292d 20h 52m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
14589 11 Jun 2020 @ 0749 --- K.Cooper 6 inches below overflow, strong boiling
14238 26 May 2020 @ 1052 --- Janet Jones Water level is still in sight with nice boils up to a foot high that don’t clear the rim top. Little Squirt ie and “Pygmy” is noisily sputtering and steaming.
14218 19 May 2020 @ 1312 --- Janet Jones Silver Spring's water level rose since yesterday to about an inch below the back catch basin. No boiling seen.
14201 18 May 2020 @ 1437 --- Janet Jones Water was visible with boiling, but water level was about 8" below the "back catch basin." Little Squirt was dry.
14168 10 Apr 2020 @ 0936 --- CraigC Steam seemed to be significantly heavier than observed previously. It was intermittent between heavy and what I would consider regular. No vertical water was observed, but visibility was not ideal. This activity was observed for about 30 minutes on the webcam.
13955 17 Oct 2019 @ 1440 --- JarnoO Ever since around the time Little Squirt was first observed, I've been seeing intermittent bursts of steam lasting about <=1m occurring from Silver Spring at a frequency of about once every 2-5 minutes or so. Never saw any water, but I think it might be actual eruptive activity which never makes it out of the crater.
10679 29 Oct 2018 @ 1232 --- udo superheated edge boil and doming to 4 inches on far side of pool
10284 18 Sep 2018 @ 1125 --- Micah Kipple Periodic heavy boils above ground level.
10003 03 Sep 2018 @ 0900 --- Micah Kipple Within a foot of the rim.
9258 21 Jul 2018 @ 0752 --- Micah Kipple Within 15 cm of rim.
8844 20 Jun 2018 @ 1328 --- mhreed At overflow.
8807 20 Jun 2018 @ 0741 --- mhreed ~2 inches below overflow. Gently pulsing.
8109 04 May 2018 @ 1126 --- Janet Jones Water 3-4" from top of the rim. Water in the back "catch basin" (for lack of a better term).
8071 03 May 2018 @ 1649 --- Micah Kipple Within 10 cm of the rim.
4059 05 May 2017 @ 1620 --- Janet Jones While Little Squirt was still erupting, Silver Spring didn't drain and erupt. Instead, the water level had dropped to about 4-6" below the rim top and was occasionally splashing from the center of the pool.
4058 05 May 2017 @ 1140 --- Janet Jones Water overflowing the crater including overflowing from back catch basin.
3993 22 Apr 2017 @ 1302 --- Micah Kipple Outer basins filled
3991 22 Apr 2017 @ 1027 --- Micah Kipple Water level near rimtop
3864 06 Nov 2016 @ 1010 --- Janet Jones Empty and steaming
3849 05 Nov 2016 @ 1328 --- mhreed Inch below overflow.
2822 06 May 2016 @ 1319 --- Janet Jones Empty and steaming. Little Squirt was off and Bronze was overflowing and sending up good bubbles (and had microbes growing in the vent).
2799 29 Apr 2016 @ 1426 --- Siegmund Water level down out of sight, no sound of boiling
2633 22 Dec 2015 @ 1652 --- Tara Boiling to 1 foot
2568 21 Oct 2015 @ 1617 --- Janet Jones Empty and steaming with occasional boiling heard at depth.
15822 04 May 1997 @ 0000 04 May 1997 @ 2359 JarnoO active
12156 24 Feb 1993 @ 1028 --- JarnoO low and boiling
12134 01 Feb 1993 @ 0000 01 Feb 1993 @ 2359 JarnoO active
5576 20 Aug 1992 @ 0000 20 Aug 1992 @ 2359 JarnoO very low, Little Squirt apparently erupted within last few days
No attachments for this geyser.
Baseline does not exist.