| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 16887 |
19 Apr 2021 @ 1523 |
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JarnoO |
1523:44 through 1524:00 - three tall jets. First jet 1523:44, second 1523:56, third 1523:58. Height of each higher than Anemone-Big's larger play, between 6-10 feet or so with the first and second being the tallest. Third about 6 feet at most. First jet was accompanied by a steam plume which remained attached to the vent for 8 seconds, so some further action must have happened which was obscured by it. Initially assumed to be Anemone-Big because of this play, but this one erupted 4 minutes later. Remained restless in the minutes after. |
| 14661 |
18 Jun 2020 @ 1532 |
18 Jun 2020 @ 1552 |
JarnoO |
(wc) 1-3 events/minute, mostly 3 events. Events were separated by about 10-20s of quiet (pause) and lasted themselves about equally long. Throughout this note, "same" refers to 1532a and 1533a for behavior.
1532a small boiling ie (¼ to ½ size of regular Anemone-Little play).
1533a boil (about Anemone-Little-sized), then small; 1533b same as 1533a.
1534a same, weak; 1534b same w/ sustained boil.
1535a same; 1535b big boil (Anemone-Big-sized) sustained; 1535c same, small (Anemone-Little-sized is probably generous).
1536a same, small; 1536b same, very small; 1536c same, v. small.
1537a same, small (long, ±15-20-odd seconds); 1537b same, small; 1537c same, small.
1538a same, big; 1538b (cam sync, no event); 1538c same, long.
1539a same, small (long pause ±15s preceded).
1540a same, small; 1540b same, small.
1541a same, small; 1541b same, small; 1541c same, decent start (Anemone-Little-sized), small otherwise.
1542a same, small; 1542b same, small.
1543a same, v. small (long pause ≥±20s preceded); 1543b same, v. small.
1544a same, v. small but picked up in size - lasted >30s; 1544b big start, small otherwise.
1545a same, Anemone-Big-sized start; 1545b same, small.
1546a same, small w/ big boil; 1546b same, sustained.
1547a same, short duration with long pause preceding; 1547b same, short pause. 1548a same, bigger than other events; 1548b same, decent boil on start.
1549a same, small.
1550a same, small (long pause preceded); 1550b same, small.
1551a same, v. small; 1551b same, v.small.
1552 cam panned away, end of observations. |
| 14186 |
14 May 2020 @ 0919 |
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K.Cooper |
(webcam) Improbable had a very large burst at this time, estimated to be at least 5, likely taller feet, and was sustained for about one second. |
| 11443 |
31 May 2019 @ 1131 |
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TSBryan |
single burst 4 or 5 feet high |
| 10224 |
15 Sep 2018 @ 2147 |
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Micah Kipple |
Low surging and roiling as normal. No evidence of major eruption. |
| 10578 |
10 Sep 2018 @ 1214 |
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Polly |
2' burst |
| 8658 |
13 Jun 2018 @ 1400 |
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CrisG |
Nice, wide 2.5-3 ft burst. |
| 8064 |
03 May 2018 @ 1215 |
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Micah Kipple |
Violent superheated boiling 30-60 cm with some surges to 1.3m |
| 8012 |
27 Apr 2018 @ 0632 |
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Micah Kipple |
Having nice bursts this morning |
| 7999 |
25 Apr 2018 @ 1603 |
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Micah Kipple |
Large sudden burst to 3 feet filling most of the pool |
| 7988 |
22 Apr 2018 @ 1010 |
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udo |
3 to 4 foot bursts happen randomly. Smaller stuff is nearly constant. |
| 7864 |
27 Dec 2017 @ 1242 |
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novakg |
Nice 2 foot burst. |
| 5671 |
03 Sep 2017 @ 1133 |
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Pat Snyder |
5 foot single burst, wide and surprising! Very cool. |
| 3976 |
21 Apr 2017 @ 0806 |
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Micah Kipple |
No evidence for recent major eruptions. |
| 3845 |
04 Nov 2016 @ 1724 |
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Betty |
nice tall burst for 1 second or 2, think about 3-4 ft. |
| 3165 |
22 Jun 2016 @ 0824 |
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David |
spouting 1-2'. see: https://www.flickr.com/photos/ujelang/27940051561/in/dateposted-public/ |
| 3331 |
22 Jun 2016 @ 0821 |
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David |
observed from 8:21-8:30. In a state of near constant boiling, with max of 1+ ft. See photos: https://www.flickr.com/search/?user_id=93705139%40N00&sort=date-taken-desc&text=improbable%20geyser&view_all=1 |
| 3358 |
11 Jun 2016 @ 1000 |
11 Jun 2016 @ 1200 |
JSJ |
Thermal photography of Improbable Geyser in low perpetual spouting recorded 162° F. |
| 2585 |
25 Oct 2015 @ 1034 |
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Biddle |
possible eruption seen on webcam |
| 2334 |
03 Sep 2015 @ 1858 |
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bhoppe |
Huge splash/surge to 5ish feet |
| 2167 |
19 Aug 2015 @ 0800 |
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Micah Kipple |
Still slightly murky this morning. Teal blue water with a little more vigorous boiling than normal. No evidence of a followup eruption overnight. |
| 2129 |
16 Aug 2015 @ 0800 |
16 Aug 2015 @ 0853 |
Micah Kipple |
Lots of strong boiling this morning. A couple "almost minors" to 4 feet, and at 0853 there was a botryoidal-like bubble to 2 feet that was spectacularly beautiful, if not startling. |
| 1888 |
11 Jul 2015 @ 1530 |
11 Jul 2015 @ 1710 |
Micah Kipple |
Improbable had several large episodes of violent boiling over the west (new vent) that I observed during this time period. Some of the surges were 3 feet tall and just as wide and sent a small flood or runoff down it's channels. |
| 1510 |
18 Jan 2015 @ 0730 |
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mhreed |
Snow marker placed in the late afternoon on the 17th was missing. Possible that the snow simply melted due to warm ground/warm air temperature, but ice chunks completely gone leading me to speculate that it may have had an event overnight. Pool color is completely back to normal. |
| 1507 |
17 Jan 2015 @ 0740 |
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WillBoekel |
snow marker still in place from last night. and the pool color is starting to clear |
| 1185 |
08 Jul 2014 @ 0800 |
08 Jul 2014 @ 1800 |
JSJ |
Improbable Geyser in eruption during late morning & early afternoon on 8 July 2014 - doing its usual moderately low perpetual spouting. |
| 1198 |
03 Jun 2014 @ 1200 |
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JSJ |
Improbable Geyser was doing its usual, moderately-low perpetual spouting - observed around noon time on 3 June 2014. |
| 2713 |
10 Aug 2013 @ 1444 |
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JSJ |
Improbable Geyser was engaged in its usual, moderately low perpetual spouting behavior - observed in the middle & late afternoon of 10 August 2013. |