| Interval Count | 100 |
| Min | 5m |
| Max | 161d 4h 37m |
| Mean | 10d 11h 38m |
| Median | 2d 16h 37m |
| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
|---|---|---|---|---|
| 36202 | 01 Aug 2024 @ 0851 | --- | mhreed | Several features in this area have a high enough water level to be in overflow or create a runoff channel as they erupt. |
| 21423 | 22 May 2022 @ 0930 | --- | Micah Kipple | The largest "perceptual spouter" on my previous note is actually a geyser. It is off at this time. |
| 21418 | 22 May 2022 @ 0840 | --- | Micah Kipple | I counted 3 perpetual spouters, 1 definite geyser (or an extremely variable cyclic spouter), and 3 empty but damp cents with carved runoff channels leading away from them. I suspect there may be 3-4 small geysers in this area this year. The most significant perpetual spouter is erupting 1-2 feet in a water-dominated column from a vent VERY close to the perpetual spouter that was active from 2010-2015ish.and it looks extremely similar. Just smaller. |
| 20315 | 05 Nov 2021 @ 1555 | --- | JarnoO | (wc) Since my last note it appears North-West-B (NW-B) has become less powerful, with height around 2-3 feet, about a third to half of what it used to be. Intervals seem to still be same, 3-4 minutes. Little to no activity seen from any of the previously-active ones, including West D, NW and NW-C. |
| 20066 | 20 Oct 2021 @ 1630 | --- | JarnoO | (wc) Since the previous note it appears North-West-B (NW-B) has taken over almost completely, with little activity from the others. Eruptive activity as in previous note. There was one day on which three Dwarfs (NW, NW-B and another one northeast of NW-B, which I'll refer to as NW-C; NW-C is *not* North Dwarf) were active, all likely on one line and all either erupting (for NW and NW-C heavily steaming with possibly water and for NW-B definitely with water) or not. This was also the one day where I thought NW-B looked weaker than usual. West D has declined further, seems to currently be only a steamy vent at times if you're lucky. |
| 19962 | 11 Oct 2021 @ 1550 | --- | JarnoO | (wc) NW-B appears to have taken further control and grown, too, since last note. Eruptions appear to be up to 2 meters in height, though durations are still brief (up to a minute). Frequency has increased, seems to be every 2-3 minutes. Noted West D only during NW-B eruptions, not immediately before as a few hours ago. There appears to be another Dwarf that's become active, located west of West D. So far I've only seen it steaming. Otherwise North-West marginally active and North seems to be a bit more active. Greatest activity from all mentioned Dwarfs appears to occur after NW-B starts and continues for a bit after it ends. |
| 19959 | 11 Oct 2021 @ 1130 | 11 Oct 2021 @ 1159 | JarnoO | (wc) Main activity has shifted towards a vent (north) east of North-West Dwarf (I'll be referring to it as NW-B), probably somewhere today or yesterday, as I recall seeing still further activity from NW on the 8th and 9th. Have seen only minimal activity from West D and NW late in observation period. NW-B steams constantly, with every 3-5 minutes a jetting episode lasting up to a minute or so. West D does appear to function like a glow switch starter in this brief observation period, increasing steam emission only right before NW-B starts (the "fluorescent lamp" in this comparison) and continuing for a while into the latter's eruption. Also noted at least one splash from North Dwarf. |
| 19938 | 08 Oct 2021 @ 1538 | 08 Oct 2021 @ 1619 | JarnoO | (wc) Frequent eruptions from the Dwarf I think is at 44°27'47.7"N 110°49'51.1"W (for simplicity's sake I'll be referring to it as North-West Dwarf or NW for short) and also from the (real, see 1326 entry) Dwarf behind Red/Orange (I think West D on JSJ's map as it has a well-defined runoff channel). North Dwarf (the one at Arrowhead's cone's base) looked like it had standing water below ground level from which occasional bubbles/splashes rose. Overall vent area of NW Dwarf got gradually bleached as the eruptions progressed. Runoff channel (and vent) from West D Dwarf filled with water when eruption started and drained following eruption. Eruption itself consisted out of splashing, perhaps no more than a foot high with the best ones. Break between 1558:32 and 1610:29 for Old Faithful. Initially there seemed to be some sort of exchange of function between NW and West D, but the final three cycles make me question that. NW would start the cycle, with West D starting only after NW was done, even for the longest NW eruption of 1m44s of which the latter (and longest) part consisted out of occasional, spaced out splashing. Then the cycle would start again. First two of the final three cycles had NW and West D together at some point in either's eruption and the last cycle had West D before NW. Activity continued from at least NW following these observations, but did not pay close attention. Times are as follows: * North-West Dwarf: 1538:±37 d=±48s, 1542:52 d=1m04s (start now well-defined - goes straight to splashing rather than pre-eruptive steam), 1547:36 d=57s, 1551:58 d=1m13s, 1556:09 d=1m44s (long splashing to finish eruption), 1610:29ie d=>40s (I=double or triple), 1614:30 d=57s, 1619:04 d=51s (end obs.) * West D Dwarf: 1537:00 d=48s, 1540:58 d=44s, 1544:59 d=42s, 1549:01 d=47s, 1553:37ie d=>38s, 1558:10 d=>22s (cam to Old Faithful), 1610:44 d=51s (first time seen together), 1614:17 d=41s, 1618:07 d=unknown |
| 13770 | 15 Sep 2019 @ 1227 | --- | Polly | One Dwarf ie (back left from the boardwalk). Others are gurgling. |
| 13361 | 02 Aug 2019 @ 1434 | --- | Polly | 2 Dwarfs ie |
| 18777 | 26 Jul 2019 @ 1155 | --- | Polly | One Dwarf ie |
| 10681 | 29 Oct 2018 @ 1238 | --- | udo | Only North is active. The rest are quiet. |
| 8061 | 03 May 2018 @ 1141 | --- | Micah Kipple | One dwarf in eruption out of the 4 periodic vents I've seen this year. |
| 7987 | 22 Apr 2018 @ 1008 | --- | udo | No avtivity except constant small (max 6 inches) eruptions from North Dwarf. |
| 7790 | 28 Oct 2017 @ 1131 | --- | udo | No erupting activity in any Dwarf |
| 6371 | 14 Sep 2017 @ 1650 | --- | Graham | All off |
| 4827 | 07 Aug 2017 @ 1457 | --- | JSJ | "Red Dwarf Geyser" - the dominant perpetual spouter in the cluster in recent years - is back on (it was off when last noticed on 27 July 2017). Two other small spouters are also active: 1) North Dwarf Geyser; 2) small pool with 2 vents at 44° 27' 47.16" North latitude, 110° 49' 50.73" West longitude (using summer 2016 satellite photo via Google Earth). The small pool with 2 vents is my informal "West Dwarf I" and "West Dwarf J" (see photo at: http://tinyurl.com/ycrl3kko). The West Dwarf I-J pool is better characterized as very frequently spitting. |
| 4560 | 27 Jul 2017 @ 1812 | --- | JSJ | "Red Dwarf Geyser" - the dominant perpetual spouter in the cluster in recent years - is already off - looks like it has been for a while. Two small spouters are active: 1) North Dwarf Geyser; 2) small pool with 2 vents at 44° 27' 47.16" North latitude, 110° 49' 50.73" West longitude (using summer 2016 satellite photo via Google Earth). The small pool with 2 vents is my informal "West Dwarf I" and "West Dwarf J" (see photo at: http://tinyurl.com/ycrl3kko). The Dwarf vent that disappeared between 2013 and 2015 is back (it also shows up on a summer 2016 satellite photo - I didn't see it personally last year) - vent is at approximately 44° 27' 47.34" North latitude, 110° 49' 50.52" West longitude. |
| 4139 | 27 May 2017 @ 1159 | --- | WillBoekel | north dwarf is off |
| 3946 | 11 Feb 2017 @ 1321 | --- | Graham | Red Dwarf is off. Can't remember the last time I saw that, it has been ie every time I have checked it. |
| 1498 | 06 Jan 2015 @ 1010 | --- | Micah Kipple | Looks like watchamcallit dwarf is silent on wc. |
| 2714 | 10 Aug 2013 @ 1200 | 10 Aug 2013 @ 1800 | JSJ | The prominent perpetual spouter in "The Dwarfs" was engaged in its usual small perpetual spouting behavior & North Dwarf Geyser was engaged in intermittent small splashing. |
| 1464 | 14 Aug 2010 @ 1200 | 14 Aug 2010 @ 1800 | JSJ | Red Dwarf Geyser (The Dwarfs, Geyser Hill Group) was engaged in perpetual spouting behavior - observed during the afternoon of 14 August 2010. |