| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 22250 |
30 Jun 2022 @ 1810 |
--- |
Tara |
Clepsydra on strong, side vent down. Spasm just starting, Jelly down ~4'. Jet active, SFP dry, Twig dry. Peanot down ~4" and bubbling over vent. Water level low in Ftn & Morning. |
| 22218 |
29 Jun 2022 @ 1940 |
--- |
Tara |
Clepsydra on strong, side vent down. Spasm ie & overflowing into Jelly, Jelly down ~2'. Jet active, SFP dry, Twig dry. Water midlevel in Ftn, too steamy to see in Morning. |
| 22195 |
29 Jun 2022 @ 0835 |
--- |
deanl |
last eruption was 0438 (1st since last evening) , and Fountain went into a stall. Clep is still pausing and Spasm has erupted for over 1 hr. |
| 22187 |
28 Jun 2022 @ 1905 |
--- |
Tara |
Clepsydra on strong, side vent down. Spasm down & dry, a few puddles in runoff channel, Jelly down ~15", saw some light bubbling on south side of pool. Jet dry & steaming, SFP dry, Twig dry. Water mid-low in Ftn & Morning. |
| 22129 |
25 Jun 2022 @ 2145 |
--- |
Tara |
Clepsydra on strong, side vent down. Spasm empty, runoff channel wet, Jelly down ~8". Jet active, Twig dry. Too steamy to see water in Ftn & Morning. |
| 22069 |
22 Jun 2022 @ 2143 |
--- |
Tara |
Clepsydra on strong, side vent down. Spasm near start, Jelly down. Jet dry, boardwalk damp near SFP. Twig and Peanot dry. Too steamy to see level in Ftn & Morning. |
| 22058 |
21 Jun 2022 @ 1725 |
--- |
Tara |
Clepsydra on strong, side vent down but visible. Spasm start 1728, Jelly down ~3'. Jet active, Twig dry, Peanot near full. Water low in Ftn & Morning. |
| 22052 |
21 Jun 2022 @ 1323 |
--- |
Tara |
Clepsydra on strong, side vent down but visible. Spasm empty, runoff channel damp, Jelly down ~1'. Jet active, Twig dry, Peanot dry. Water level low in Ftn & Morning. |
| 22049 |
20 Jun 2022 @ 2200 |
--- |
Tara |
No eruption yet, abandoned due to darkness. Looked similar to ~8hr interval on 6/17. |
| 22048 |
20 Jun 2022 @ 2025 |
--- |
Tara |
Clepsydra on strong, side vent down but visible. Spasm ie, Jelly overflowing. Jet dry & steaming, SFP dry. Peanot dry, Twig a bit damp. Fountain & Morning midlevel. |
| 22043 |
20 Jun 2022 @ 0928 |
--- |
Tara |
Clepsydra on strong, side vent down but visible. Jelly down ~3', Spasm ie and still filling. SFP ie, Jet dry, Twig dry, Peanot dry. Morning water level barely visible from overlook, Frn low but higher than it was before eruptions on 6/19. |
| 22023 |
18 Jun 2022 @ 1900 |
--- |
Tara |
Clepsydra on strong, side vent down but visible. Spasm ie, Jelly down ~4". Jet active, Super Frying Pan finished a strong eruption recently based on runoff channel. Twig dry, Peanot down ~1.5' and calm. Water level down in Ftn and Morning. |
| 22020 |
18 Jun 2022 @ 1345 |
--- |
Tara |
Clepsydra on strong, side vent down but visible. Spasm dry, Jelly down ~3.5'. Jet, Twig, & Peanot dry. Water level visible in Morning from overlook, low-midlevel in Fountain. |
| 22018 |
18 Jun 2022 @ 0917 |
--- |
Tara |
Clepsydra on strong, side vent down but easily visible. Spasm ie and rising, about 6" below overflow. Jelly down ~2.5'. Jet active, Twig dry. Medium water level in Fountain and Morning. |
| 22011 |
17 Jun 2022 @ 2145 |
--- |
Tara |
No Fountain as of this time. Clepsydra continued to pause and Fountain's water level rose, stall behavior. |
| 22009 |
17 Jun 2022 @ 1945 |
--- |
Tara |
Clepsydra pausing, side vent down ~5". Spasm ie and surging, Jelly overflowing. Ftn & Morning high, at stall level. Jet grumbling but dry, Twig and Peanot dry. |
| 22003 |
17 Jun 2022 @ 1240 |
--- |
Tara |
Clepsydra on strong, side vent well down with water level barely visible. Spasm down & dry, Jelly down ~3", Jelly & Spasm runoff channels damp. Jet dry, occasional gentle steam and grumbling. Twig & Peanot dry. Fountain and Morning both midlevel & visible from boardwalk. |
| 21988 |
15 Jun 2022 @ 2038 |
--- |
Tara |
Clepsydra on strong, side vent down 4-5". Spasm ie with bursts to 4', Jelly ~1' down. Jet active, Twig dry. Too steamy to see water level in Ftn and Morning. |
| 21986 |
15 Jun 2022 @ 1345 |
15 Jun 2022 @ 1645 |
annelies8 |
no eruption from 13:45 to 16:45 |
| 21934 |
11 Jun 2022 @ 1550 |
--- |
Tara |
Clepsydra on strong, water level down but visible in side vent. Spasm empty, Jelly ~8-10" down. Jet active, Twig and Peanot dry. Medium water levels in Fountain and Morning. |
| 21897 |
10 Jun 2022 @ 0830 |
--- |
Graham |
First observed rise in water level from its usual low point. Rising in a stall. 0915 rocks all covered. 1039 water at the bottom of the oval indentation on back wall. 1041 eruption of Clepsydra on strong. 1335 rocks reappearing. |
| 21876 |
09 Jun 2022 @ 1755 |
--- |
Tara |
Clepsydra on strong, side vent water low but visible. Jet dry, Spasm ie and overflowing into Jelly, Jelly ~1' down. Fountain water level low, water not visible in Morning. Twig near start, water level still coming up. Peanot water level not visible. |
| 21767 |
05 Jun 2022 @ 0730 |
--- |
mjacka |
Discussions with those watching Great Fountain indicated that Fountain was seen ie appx 0730. Since nothing has been entered, I'm entering this note. If someone has something more accurate, feel free to delete the. |
| 21732 |
04 Jun 2022 @ 1757 |
--- |
Tara |
no eruption as of this time, abandoned due to rain |
| 21731 |
04 Jun 2022 @ 1721 |
--- |
Tara |
Clepsydra on strong, side vent visible water and bubbling. Jelly low, Spasm nearing overflow, Jet active, Peanot down ~1.5' and bubbling. Fountain very low, water not visible in Morning. |
| 21646 |
01 Jun 2022 @ 1930 |
--- |
Tara |
Clepsydra on strong, water level barely visible in side vent, Spasm empty, Jelly ~1.5' down, Jet active, Twig and Peanot dry. Water level well down in Fountain, not visible in Morning. |
| 21561 |
28 May 2022 @ 1757 |
28 May 2022 @ 1930 |
Stephen_Gemar |
In a stall. Water in Fountain and Morning high. Water remained high throughout observation - no eruption as of 19:30. |
| 21406 |
21 May 2022 @ 1645 |
--- |
Graham |
Pool dropping, lots of rocks visible. |
| 21404 |
21 May 2022 @ 1324 |
--- |
Graham |
Water covering the rocks. |
| 21356 |
18 May 2022 @ 0919 |
--- |
Graham |
First observed small rise in the water level during the stall. Did not cover all the rocks before 10th Clepsydra eruption stayed on. Dropped a little after 0942. |
| 21267 |
13 May 2022 @ 1830 |
--- |
Tara |
Clepsydra on strong, side vent nearly out of sight with light bubbling. Jelly down ~3', Spasm empty. Twig dry, Jet dry but pushing steam. Water level at the usual hold spot in Fountain, too steamy to see Morning's pool level. |
| 21262 |
13 May 2022 @ 1345 |
--- |
Tara |
Clepsydra on strong, side vent down ~4-5" and bubbling. Spasm about 2' down and dropping. Fountain water level well down, Morning water level difficult to judge due to steam. Jet active. |
| 21251 |
12 May 2022 @ 1840 |
--- |
Tara |
Clepsydra on strong, side vent has visible water ~4-5" down with bubbling. Water level low in Fountain, no visible water in Morning. Jet and Spasm dry, Jelly down ~3 ft, no water in Twig or Peanot. |
| 21189 |
06 May 2022 @ 1741 |
--- |
Tara |
Twig having low splashes on arrival, stopped shortly after. Clepsydra on strong, water down but visible in side vent with bubbly splashes. Spasm empty, Jelly 3' down, Jet not active, Morning water level looked to be just out of sight based on steam. |
| 21187 |
06 May 2022 @ 1408 |
--- |
Tara |
Clepsydra erupting normally, no water visible in side vent, Spasm overflowing with light boil, Jet active, Morning water level visible from overlook. Windy! |
| 21182 |
05 May 2022 @ 1830 |
--- |
Tara |
Clepsydra on, no water visible in side vent. Spasm just ending, Twig dry, water around SFP, too steamy to see water in Morning, could be just below visible level. |
| 21171 |
05 May 2022 @ 1353 |
--- |
Tara |
Clepsydra on steady, everything else dry. Water just visible in Morning from the overlook. |
| 21119 |
27 Apr 2022 @ 1439 |
27 Apr 2022 @ 1445 |
momadair2 |
Fountain Water level 2Feet below the rim. |
| 21107 |
27 Apr 2022 @ 0915 |
--- |
aferrara |
Water level high in fountain and morning |
| 20847 |
25 Feb 2022 @ 1350 |
--- |
aferrara |
Visible standing water in pool. |
| 20033 |
18 Oct 2021 @ 0925 |
--- |
Tara |
Water level high but not at stall level. Clepsydra steady, no visible water level in side vent. Spasm just starting. No eruption as of 0945. |
| 20031 |
17 Oct 2021 @ 1755 |
--- |
bbev |
No visible water, guessing mid cycle. Pool in front of clepsydra is empty and no splashing. |
| 19963 |
11 Oct 2021 @ 0954 |
--- |
bbev |
pool is high, about 16" below rim. Morning also high in pool. |
| 19842 |
01 Oct 2021 @ 1428 |
--- |
Graham |
First small rise in pool observed. Still very low, but rising during the stall. |
| 19540 |
13 Sep 2021 @ 1611 |
--- |
Graham |
At least 5 Clepsydra pauses after Fountain. Likely in a stall, did not stay. This morning's "stall" had an interval of 4h24m, so this doesn't automatically mean it will be a long interval. |
| 19537 |
13 Sep 2021 @ 1350 |
--- |
Graham |
Slight rise in the pool from empty but still not covering much at all. Similar to the interval after the long stall on 9/9. |
| 19535 |
13 Sep 2021 @ 0941 |
--- |
Graham |
First view in the pool and water rising, most rocks covered. |
| 19408 |
09 Sep 2021 @ 1700 |
--- |
Graham |
Water level has come up slightly from the low/empty level. Still very low. Stopped rising about 1800. Still doing some slight rise and drop cycles. Some rocks still visible including the tip of the triangular rock on the right side. |
| 19403 |
09 Sep 2021 @ 1125 |
--- |
Graham |
Slight drop in water level now Clepsydra is on strong. Slow drop continued until Fountain erupted. |
| 19402 |
09 Sep 2021 @ 0858 |
--- |
Graham |
Water rising in Fountain. Hard to see prior to this but tops of rocks are still visible. |
| 19208 |
31 Aug 2021 @ 1849 |
--- |
Graham |
Pool dropped slightly when Clepsydra turned on. Continued to drop until observations ceased with lack of light. |
| 19194 |
31 Aug 2021 @ 1612 |
--- |
Graham |
Very small rise in the pool around time if 10th Clepsydra pause. 1612 2 to 2.5 feet down from the rim and slowly rising. |
| 19054 |
24 Aug 2021 @ 1742 |
24 Aug 2021 @ 1901 |
minissa |
Arrived to find the entire Fountain area really quiet except for New Bellefontaine. Jets every 3-4 minutes but short and weak. Spasm came on fairly strong 1800. For the time we were there, Morning was quite full and continuing to rise. 1823 water rose in Fountain so visible from observation deck but then held at about 18 in below overflow. Clepsydra alternated periods of quiet with periods of activity during which mainly vents 2 and 3 erupted with many blue bubbles and excellent height. We reported to Tara, who said this was a stall and, while we had a 50/50 chance of getting Fountain as long as Clep alternated starting and stoppi g, the more likely scenario was an eruption 7.5 to 10.5 hours after previous Fountain eruption. |
| 19011 |
23 Aug 2021 @ 0900 |
--- |
steve |
Fountain area, PEANOT is full and overflowing but not erupting. Jet and Super Frying Pan are off. No water in Spasm. Bearclaw is growling but nothing is making it to the surface. Clep is ie. Jelly is too low to see the water level. |
| 18640 |
23 Jul 2021 @ 2220 |
24 Jul 2021 @ 0030 |
Tara |
No eruption during this time. Stall behavior: Fountain and Morning water levels high, Spasm high and surging 2-4', Clepsydra pausing and restarting periodically, Jet rumbling constantly with erratic eruptions. Clepsydra last pause 0013 and last restart 0016, steady from then until 0030 when I left the area. I am confident the 10h interval is closed. |
| 18423 |
14 Jul 2021 @ 1110 |
14 Jul 2021 @ 1305 |
Tara |
No eruption during this time |
| 17966 |
21 Jun 2021 @ 1544 |
--- |
Scott H |
tour guide report seeing Fountsin between 1530 and 1600 |
| 17783 |
14 Jun 2021 @ 0001 |
14 Jun 2021 @ 1200 |
aferrara |
Electronic logger seems to be missing some (not all) mid-day eruptions. Eruptions observed directly are not always represented in the logger data in that time period. Long intervals, as always, may or may not represent closed intervals, even with the assistance of the electronic logger. |
| 17785 |
14 Jun 2021 @ 0835 |
--- |
Graham |
Empty and damp. Clepsydra side pool water high. Clepsydra on steady, not trying to pause. Ftn must have erupted recently, maybe 0700 to 0730? (0737 per Lynn) Spasm empty. No water visible in Jelly. 0850 water slightly higher in Ftn but still full of rocks. No water visible in Morning. 0905 Jelly water rising, deep in the vent. 0920, 0935 unchanged, Jelly slowly rising. 0950 Fountain water level down a little to "normal" level. 1005 Clepsydra side vent boiling on left side. 1020 unchanged. 1035 water barely visible in Morning. 1050 unchanged. |
| 17758 |
13 Jun 2021 @ 1630 |
13 Jun 2021 @ 1920 |
Tara |
high water level in Fountain and Morning, Spasm full & intermittently bursting 2-4', Clepsydra pausing, Jet dry and grumbling. Water levels rose in F, M, & MT which showed visible boiling at 1806. Jet grumbling got louder until it erupted at 1800. Clepsydra last pause 1822, on at 1826, full strength & steady at 1835. F, M, & MT dropped a few inches after Clep became steady, no eruptions from any of the 3 as of 1920. Will fill in more details later. |
| 17738 |
12 Jun 2021 @ 2100 |
13 Jun 2021 @ 0035 |
William |
did not erupt during this time |
| 17734 |
12 Jun 2021 @ 2057 |
--- |
William |
12"-16" below rim |
| 17709 |
12 Jun 2021 @ 0949 |
--- |
bbev |
water is high, 16-18" below rim |
| 17364 |
01 Jun 2021 @ 2140 |
--- |
Tara |
Had not erupted as of this time. |
| 17222 |
28 May 2021 @ 0830 |
--- |
Tara |
Looked post eruptive. Twig just ending, Fountain runoff wet, Clepsydra side vent down several inches, Spasm draining. |
| 17211 |
27 May 2021 @ 1911 |
--- |
JSJ |
Inclinometer reading: height of Fountain Geyser's 1911 to 1938 eruption was 67 feet at least. Two decent bursts later in the eruption weren't measured. |
| 17202 |
27 May 2021 @ 1530 |
--- |
bbev |
water in pool visible from boardwalk, 16" below rim and up into the channel. |
| 17110 |
17 May 2021 @ 0810 |
17 May 2021 @ 0930 |
Tara |
In area for this time, no eruption of Fountain. It had been at least 2 hrs since the previous eruption based on runoff channels. |
| 16444 |
19 Oct 2020 @ 0935 |
--- |
William |
no water visible in Fountain, Clep side vent also empty. |
| 16099 |
13 Sep 2020 @ 0831 |
--- |
WillBoekel |
post eruptive |
| 15681 |
22 Aug 2020 @ 1320 |
--- |
deanl |
platform was wet from recent eruption, so assume it was12:30-12:40-ish? |
| 15644 |
18 Aug 2020 @ 1850 |
18 Aug 2020 @ 2115 |
BrandonC |
Observed from great fountain and checked fountain from 2030-2115
Good pool when I was leaving |
| 15564 |
13 Aug 2020 @ 1319 |
13 Aug 2020 @ 1343 |
JSJ |
Highest water during Fountain Geyser's 1:19 to 1:43 PM eruption was about 66 feet. |
| 15529 |
11 Aug 2020 @ 1450 |
11 Aug 2020 @ 1516 |
JSJ |
Inclinometer reading: highest water during Fountain Geyser's 2:50 to 3:16 PM eruption was about 58 feet. |
| 15152 |
02 Aug 2020 @ 1731 |
--- |
JSJ |
Inclinometer reading: highest water during Fountain Geyser's 5:31 to 6:02 PM eruption was about 75 feet. |
| 15056 |
20 Jul 2020 @ 1745 |
--- |
William |
no water visible |
| 15038 |
19 Jul 2020 @ 1420 |
19 Jul 2020 @ 1445 |
Yates |
Was driving and didn’t catch the precise time but was ie on my way from Norris to UGB |
| 14855 |
02 Jul 2020 @ 0815 |
--- |
Graham |
Clep side pool splashy. Spasm down. Jelly dropping. PEANOT down but filling. |
| 14680 |
19 Jun 2020 @ 0900 |
--- |
Ben VL |
Visitors reported to me a fountain duration exceeding 40 minutes for an eruption sometime this morning. Their description matched an eruption of fountain so I thought I should make a note. |
| 14640 |
14 Jun 2020 @ 1748 |
--- |
CraigC |
From Great Fountain observed steam rise just above the trees in the area of Fountain when no steam had been visible for the previous 20 minutes |
| 14629 |
13 Jun 2020 @ 1406 |
--- |
William |
post eruptive, clep paused |
| 14048 |
22 Dec 2019 @ 2033 |
--- |
Micah Kipple |
No fountain yet. |
| 14045 |
20 Dec 2019 @ 0909 |
--- |
Micah Kipple |
Water very high in both Fountain and Morning. Clepsydra Weak and pausing infrequently. |
| 13892 |
06 Oct 2019 @ 0726 |
--- |
jkgood |
I believe I just missed an eruption. Water in shoulder pools still steaming. Clep was off on arrival at 7:26- restarted 7:29/ stopped again ~7:34- back on 7:41
Jet grumbling and boardwalk spattered by SPF |
| 13881 |
04 Oct 2019 @ 1844 |
--- |
Tara |
no eruption as of this time. |
| 13877 |
04 Oct 2019 @ 1800 |
--- |
Tara |
Water level extremely high in both Fountain and Morning. Water well out the "neck" of Ftn, maybe 1 foot below rim. Looks to be a stall, though I did not see any unusual behavior from Clepsydra during my time observing the group. |
| 13783 |
23 Sep 2019 @ 0903 |
--- |
mroseum |
logger battery dead |
| 13772 |
20 Sep 2019 @ 1840 |
--- |
Ben VL |
Clep side vent empty splashing. Water in Morning well below island.
A couple jets observed.
My guess is somewhere mid-cycle between two eruptions. |
| 13661 |
12 Sep 2019 @ 1218 |
--- |
Barbara Lasseter |
2 parallel steams from fountain area as seen from FLdr |
| 13640 |
10 Sep 2019 @ 0811 |
--- |
Barbara Lasseter |
Big steam began as seen from Thud pullout. Ended 0848. Clepsydra steam continued for30 min after |
| 13484 |
29 Aug 2019 @ 0000 |
--- |
mroseum |
Fountain Logger only shows later morning starting 8/29. No electronic back-logs before that can be made |
| 13140 |
10 Aug 2019 @ 0620 |
--- |
RMichaels |
Based on water surrounding platform, no water seen in Morning or Fountain, and Clepsydra's side vent being full of water, I would assume an eruption occurred sometime in previous hour. |
| 13060 |
05 Aug 2019 @ 2119 |
--- |
Stephen_Gemar |
No eruption of Fountain as of 19:19. Water had been sitting part way up the crater, almost to the top of the large dark notch on the back of Fountain’s crater, and didn’t seem to move during our observation. |
| 12939 |
01 Aug 2019 @ 1421 |
01 Aug 2019 @ 1458 |
JSJ |
Inclinometer: highest water at least ~58 feet. Saw a taller spout but didn't get a chance to measure. |
| 12870 |
29 Jul 2019 @ 2005 |
--- |
Tara |
Fountain's formation and runoff channel still wet. Clepsydra side vent about a half inch below rim, gently bubbling and pulsating. Back side if Morning dry. Puddles around Morning's Thief. |
| 12790 |
24 Jul 2019 @ 1545 |
--- |
Tara |
No eruption yet since 0615ie Fountain. No water or much steam from Morning's Thief as of 1530. Water level in Morning was rising extremely slowly and as of 1530 had not covered the "island" next to the peninsula on the left side of the crater. It had a lazy boil with very little convection at that time. |
| 12508 |
17 Jul 2019 @ 1355 |
17 Jul 2019 @ 1445 |
Tara |
Formation dry, water levels in Fountain and Morning looked like Fountain was in eruption window, Jet initial at 1412. |
| 12484 |
14 Jul 2019 @ 1301 |
--- |
jazzknick |
Water slowly rising in Fountain and Morning, approx 2 inches per hour est. apart from Clepsydra, no other associated features active. |
| 12483 |
14 Jul 2019 @ 1231 |
14 Jul 2019 @ 1233 |
jazzknick |
Fountain & Morning water level 3 ft below rim and gently steaming. Runoff channels dry in 83 degrees temps. No other features active except Clepsydra is. |
| 12470 |
13 Jul 2019 @ 0505 |
--- |
ypcaribou |
Two tall columns of steam seen from road southbound. One was Clepsydra. Other to left of Clepsydra. |