| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 29056 |
22 Oct 2023 @ 1454 |
--- |
SantaFe108 |
Lava Pool's water level is out of sight viewing from Hurricane Vent. Spouter on the N edge forcing steam at variable volume. |
| 29163 |
22 Oct 2023 @ 1310 |
--- |
SantaFe108 |
A member of the Porcelain Springs NE of Pinwheel and NW of Blue, named "Island Geyser" (sometimes referred to as "Tree Island") powerfully bursting to 25' tall. Around 1430ish water color became light brown and then was clear again by 1500. |
| 28876 |
19 Oct 2023 @ 1148 |
--- |
DanS |
Black Hermit Caldron- large dark boils on East side of pool. |
| 28828 |
14 Oct 2023 @ 1427 |
--- |
MAB |
Gibbon Meadows geyser: from a neighbors FB post steam visible but I couldn't see a clear column of water - photo time stamp was 1427 |
| 28725 |
09 Oct 2023 @ 1330 |
--- |
cb |
Norris back basin>Root pool is also VERY high/full! Highest water level I've seen since 2019. Both pools are connected in the narrow section of the feature, color is a milky green & it had a very weak boil over the vents in each pool. |
| 28645 |
05 Oct 2023 @ 1421 |
--- |
cb |
Nuphar Lake is still incredibly high, lime green and has thermal water flowing into it from features below where the old lunch station used to rest. The seeps from it and into Porcelain basin are not active . |
| 28607 |
02 Oct 2023 @ 0917 |
--- |
JarnoO |
(wc) Steam began rising from Spatter's (UGB; opposite of Sprinkler, 44°27'52.9"N 110°50'07.9"W based on Google Maps and Geysers of Yellowstone) spot. Might have included water. In any case it's the earliest recorded activity I have from Spatter, though I do want to note that I only skimmed the overnight captures. Cam panned to the Hill a minute later, so I don't know if other activity followed. |
| 28389 |
21 Sep 2023 @ 1238 |
21 Sep 2023 @ 1241 |
Micah Kipple |
A couple above-ground splashes from the feature to the north of Rusty and borehole Y8. |
| 28372 |
20 Sep 2023 @ 0919 |
--- |
Micah Kipple |
The feature mentioned in my previous note has now briefly paused before returning to water phase. With energetic bursting 1-4 feet high. There is an interesting lack of chugging like I observed when I first arrived on the constant bench. |
| 28371 |
20 Sep 2023 @ 0916 |
--- |
Micah Kipple |
A feature that has been erupting with a similar style to Whirligig's rooster tail vent about 50 feet to the right of Pinto from the bench right at the base of the hillside suddenly switched to a loud roaring steam phase at this time. |
| 28301 |
17 Sep 2023 @ 1223 |
--- |
SantaFe108 |
Gibbon Meadows geyser
Not ie, steaming quietly. |
| 28282 |
16 Sep 2023 @ 1540 |
--- |
SantaFe108 |
Semi-Centenniel Geyser
Still a lighter green color as last reported. |
| 28217 |
11 Sep 2023 @ 1245 |
11 Sep 2023 @ 1330 |
CP |
New Imperial: eruptions from 1 to 6 minutes in duration, with pauses of 20 to 30 seconds between. |
| 28125 |
08 Sep 2023 @ 1110 |
--- |
Graham |
Halfway Spring on Seven Mile Hole trail is overflowing. |
| 27670 |
18 Aug 2023 @ 1650 |
--- |
bbev |
Semi-centenial: pool is a splitpea soup green, where normally l have seen it more blackish brown. |
| 27571 |
13 Aug 2023 @ 1855 |
--- |
minissa |
I think this is the feature Scott calls Old Surprise Spring. It has been erupting every 10-12 minutes during our Fountain sit, but you have to judge more from the steam cloud because from the overlook it's over a small shoulder of land and it looks like the formation is a deep bowl. |
| 27550 |
12 Aug 2023 @ 1411 |
--- |
JSJ |
LKNN001 (= RCN database designation) in the Kaleidoscope Group, Lower Geyser Basin; = 1B/vent 1B of Wolf & Paperiello, 1989 (Report on the Kaleidoscope & Sprinkler Groups, pp. 2, 7-8); vent is located 7 meters north-northeast of Kaleidoscope Geyser & 9 meters south-southeast of the center of Drain Geyser; UNNG's vent is at 44° 33' 16.05" North latitude, 110° 48' 47.58" West longitude. I suspect this vent is the same as "Kaleidoscope’s Indicator Geyser". Blipping / low spouting. |
| 27548 |
12 Aug 2023 @ 1345 |
--- |
JSJ |
LKNN002 - unnamed geyser in the Kaleidoscope Group, Lower Geyser Basin. Located southeast of Three Vent Geyser & southwest of Kaleidoscope Geyser. Entire basin is water-filled; orange-floored with a dark green vent area. Receiving runoff from Kaleidoscope Geyser eruptions. |
| 27536 |
11 Aug 2023 @ 1336 |
--- |
JSJ |
Broken Egg Spring - in light overflow & gently bubbling. |
| 27498 |
10 Aug 2023 @ 1510 |
--- |
minissa |
Purple Pools: North boiling intermittently 1-2 feet high from what looks like a low pool {binoculars from between Oblong and Giant}; likewise East. South is periodically sending up a wide steam cloud but unable to see any splashing. Just sayin'... |
| 27304 |
28 Jul 2023 @ 2100 |
--- |
SantaFe108 |
Two vents in the NBK-3 area spouting ~1ft high. |
| 27266 |
27 Jul 2023 @ 1615 |
27 Jul 2023 @ 1650 |
SantaFe108 |
Snowglobes:
No eruptions observed during this time. Snowglobe #1 and #2 have merged to become a single larger pool. |
| 26952 |
08 Jul 2023 @ 2000 |
08 Jul 2023 @ 2037 |
nails |
Feature erupting to about 1 foot, durations about 1 minute, intervals about 2 minutes. Located on left side ( looking upstream from bridge) of Tantalus Creek just across the little trees from Corporal. |
| 26914 |
08 Jul 2023 @ 1125 |
08 Jul 2023 @ 1225 |
Janet Jones |
I thought "Waterfall Geyser" at West Thumb was in here - did someone give it a number? 3/4 full of blue, opaque water. Some bubbles rising in it. Also, "Dancing Geyser" continues to be full and blue and overflowing with microbes growing in the overflow channel. Thumb Geyser was half full, blue opaque water with orange microbes around the edges. The UTF behind Thumb Geyser that has been active for quite some time was splashing. And, I'll add in Percolating Spring here as well since it's not yet listed: No water at all - vent is still full of gravel (amazingly so - really wonder what happened there) Oil Slick is also probably not in here - no water, also no water in Ephedra or Perforated. Lakeside Spring had heavier than normal overflow. Bluebell Pool and Seismograph Pool are also still well below overflow. |
| 26880 |
07 Jul 2023 @ 0833 |
--- |
Tara |
Gibbon Meadows geyser erupting to 5-10' |
| 26807 |
03 Jul 2023 @ 1114 |
--- |
bbev |
Gibbon meadow feature is off. 1300 off. |
| 26791 |
02 Jul 2023 @ 0852 |
--- |
bbev |
Gibbon Meadow feature off, no water, little steam 1057, barely erupting, maybe 1-2' from both vents, can only see water with binoculars. |
| 26776 |
01 Jul 2023 @ 1146 |
--- |
bbev |
Gibbon Meadow spouter. No steam on a warm day and no water to be seen.
Have noticed that the activity has been decreasing over the past week. This is first time l have driven by and not seen any water since l first noticed it erupting on June 12. |
| 26629 |
23 Jun 2023 @ 1130 |
--- |
bbev |
Spouter in Gibbon meadow continues. Play is 3-5 feet at this time. I have observed some slightly stronger play on occasion during my daily trek to Madison from Norris. |
| 26488 |
20 Jun 2023 @ 0810 |
20 Jun 2023 @ 0813 |
aferrara |
Small crack ~10' SE of Jagged sputtering 1-3" tall. |
| 26473 |
19 Jun 2023 @ 1712 |
--- |
ypcaribou |
Spouter at far N west end of Gibbon Meadows as seen while driving NB...
"Speaking of Gibbon Meadows, that thing is steaming but definitely not throwing water like it was last week." |
| 26481 |
19 Jun 2023 @ 1400 |
--- |
JSJ |
Small, unnamed feature 22 meters southwest of Jagged Spring (Black Sand Basin, Upper Geyser Basin). Vent is at 44° 27' 43.08" North latitude, 110° 51' 13.93" West longitude. Perpetual spouting - low to very low splashing. |
| 26468 |
19 Jun 2023 @ 1330 |
--- |
bbev |
Gibbon Mdw. Geyser N of Sylvan Sprg. Very little steam and no water seen in brief, 5 min observation. |
| 26448 |
18 Jun 2023 @ 1531 |
--- |
Graham |
Mud Volcano Dragons Mouth Spring has cleared the rocks that fell and blocked the entrance. It is now sending nice waves out of its mouth. Not sure when it cleared out? |
| 26393 |
17 Jun 2023 @ 0806 |
--- |
Graham |
Snow Globe close to the boardwalk appears less active in 5 eruptions observed, splashed weakly in 2 of them. Second snowglobe erupting about 2 feet. |
| 26378 |
16 Jun 2023 @ 1907 |
--- |
Craigmon99 |
Pool across from CGG-6 looks hotter than when I first arrived. |
| 26385 |
16 Jun 2023 @ 1613 |
--- |
JSJ |
Small feature in Flood Group, just above the Firehole River's western bank, about 69 meters west-northwest of Flood Geyser, located at 44° 31' 15.65" North latitude, 110° 49' 46.75" West longitude. Slightly intermittent spraying and spritzing from a sublinear vent. |
| 26384 |
16 Jun 2023 @ 1422 |
16 Jun 2023 @ 1427 |
JSJ |
LKNN001 (RCN database designation) - a geyser in the Kaleidoscope Group (possibly the same feature as "Kaleidoscope's Indicator Geyser"), Lower Geyser Basin; = UNNG 1B/vent 1B of Wolf & Paperiello, 1989 (Report on the Kaleidoscope & Sprinkler Groups, pp. 2, 7-8); vent is located 7 meters north-northeast of Kaleidoscope Geyser & 9 meters south-southeast of the center of Drain Geyser; vent is at 44° 33' 16.05" North latitude, 110° 48' 47.58" West longitude. Occasional low splashing at 1422; frequent low splashing from 1425 to 1427. No actual eruptions seen as in some previous years. |
| 26270 |
12 Jun 2023 @ 1340 |
12 Jun 2023 @ 1415 |
aferrara |
Watched several eruptions of Snowglobe and friend. Average height on the second vent 2-3 ft, average for Snowglobe less than a foot. Average interval 83 seconds. 2 eruptions got a few drops of water onto the boardwalk |
| 26182 |
09 Jun 2023 @ 0625 |
--- |
Graham |
Snow Globe and next hole still active like yesterday. Eruption height seems slightly reduced from last night but second vent still getting slightly over 2 feet. Watched 10 eruptions. |
| 26129 |
07 Jun 2023 @ 1537 |
07 Jun 2023 @ 1557 |
aferrara |
Second vent, west of feature under the doublet pool sign is growing its vent. Added about 1 square inch to the size of its vent in the last 15 minutes. Seems to have water levels connected to the doublet pool sign geyser, but at a cursory glance doesn't seem to relate in terms of eruption start/stop time. Two other vents have standing water that rises and falls with the erupting vents. |
| 26081 |
06 Jun 2023 @ 1204 |
--- |
SantaFe108 |
Spring across the boardwalk west of UNNG-GHG-15 overflowing and occasionally bubbling. |
| 25959 |
02 Jun 2023 @ 1445 |
--- |
TSBryan |
also at 1530, BBG-8 with strong overflows but no eruption whatsoever. |
| 25917 |
30 May 2023 @ 1908 |
--- |
Tara |
spring on west side of Solitary boardwalk spur is cycling every few minutes with bubbling and overflow, then drops below overflow for about a minute |
| 25889 |
29 May 2023 @ 1413 |
--- |
aferrara |
New sput across boardwalk from Doublet steadily bubbling |
| 25723 |
23 May 2023 @ 1321 |
--- |
cb |
Nuphar Lake is EXTREMELY HIGH. Edge of the lake is ~10-15' from the dead end boardwalk. several seaping areas at the base of the berm into Porcelain basin have Porcelain basin, on the south west end, kinda flooded! |
| 25874 |
21 May 2023 @ 1128 |
--- |
SantaFe108 |
UNNG's between Pinwheel and the hill splashing ~1-4ft tall. |
| 25604 |
20 May 2023 @ 1848 |
--- |
SantaFe108 |
Spring across from UNNG-GHG-15 is lightly overflowing. |
| 25554 |
12 May 2023 @ 1436 |
12 May 2023 @ 1454 |
Janet Jones |
"Singlet Geyser" in the overflow channel of Doublet Pool was loudly hissing as a fumarole. I could hear it from near the path to Solitary Geyser around 1436 to Sponge. At 1454, it abruptly stopped and started to gurgle. |
| 25373 |
09 May 2023 @ 1853 |
--- |
Tara |
Old Bellefontaine, Fountain Group, LGB. Pool empty, now that I can see better it appears that the pool has not been full in quite some time. There is no bacteria evident in the runoff channel and the edges appear to be eroding. |
| 25348 |
06 May 2023 @ 1848 |
--- |
SantaFe108 |
Frying Pan near Double Pool began making noise and stopped a minute later. |
| 25333 |
06 May 2023 @ 1350 |
--- |
Tara |
Old Bellefontaine, Fountain Group, LGB. No water visible in crater |
| 25308 |
30 Apr 2023 @ 2014 |
--- |
SantaFe108 |
Old Bellefontaine Geyser
Crater empty. |
| 25286 |
30 Apr 2023 @ 1320 |
--- |
SantaFe108 |
"Old Tardy C Geyser"
Gurgling at depth. |
| 25237 |
24 Apr 2023 @ 1512 |
24 Apr 2023 @ 1549 |
DanS |
UNNG-ORG-6 Goldfinger Geyser was over a foot down with still pool at 1510.
Pool steadily rose to an inch below overflow with waves an bubbling in pool by 1531.
Overflow started about 1543 with bubbles and pulsating pool. |
| 25231 |
23 Apr 2023 @ 1830 |
--- |
SantaFe108 |
Fountain Paint Pots //
Very wet, paint-like consistency and very active. Red Spouter has water in its vent. |
| 25236 |
23 Apr 2023 @ 1820 |
--- |
SantaFe108 |
Old Bellefontaine Geyser is empty. |
| 25221 |
23 Apr 2023 @ 1357 |
--- |
DanS |
UNNG-ORG-6 Goldfinger Geyser was full with overflow and bubbling at 1050. By 1357, the pool has dropped almost a foot and bubbling stopped. |
| 25184 |
19 Apr 2023 @ 1435 |
--- |
aferrara |
Runoff channel from Indigo Spring is completely dry. |
| 25019 |
18 Feb 2023 @ 1456 |
--- |
SantaFe108 |
Mammoth Hot Springs //
Canary Spring: flowing,
Grassy Spring: flowing,
Mound Spring: flowing,
Dryad Spring: dry. |
| 24912 |
15 Jan 2023 @ 1731 |
--- |
Graham |
Pygmy Geyser spot is bubbling again. Has been quiet on other recent walk bys |
| 24840 |
08 Jan 2023 @ 1245 |
--- |
Graham |
Noisy bubblers right by the boardwalk in line between Silver Spring and Little Squirt. 5 small sputtering spots on Little Squirt side. Possibly Pygmy Geyser location. 1/12/23 area is dry and inactive. |
| 24773 |
15 Dec 2022 @ 1310 |
15 Dec 2022 @ 1340 |
aferrara |
Between Little Squirt and the boardwalk, several small bubblers active, moving gravel, boiling and sizzling constantly. One vent occasionally throwing drops of water 3". |
| 24659 |
08 Nov 2022 @ 1406 |
--- |
Delta4Heavy85 |
Beehive's West Vent is steaming and there may have been a around 6 inch splash at 140602 but it is hard to tell. |
| 24421 |
16 Oct 2022 @ 1308 |
--- |
Tara |
Old Bellefontaine, Fountain Group, LGB. No water visible in crater. |
| 24386 |
14 Oct 2022 @ 0925 |
--- |
MAB |
NGB: worth noting is flowing water in one channel below Ramjet Springs near and under boardwalk w doubtful precipitation overnight - no steam seen up there though - 2nd channel closest to Pinwheel dry |
| 24318 |
08 Oct 2022 @ 1314 |
08 Oct 2022 @ 1319 |
DanS |
From Artemisia trail there is a round feature (surging spring?) at top of hill beyond West Sentinel with obvious variable steam emitting (making smoke signals). Unable to observe any splashing water though. |
| 24320 |
08 Oct 2022 @ 1300 |
--- |
Tara |
Old Bellefontaine, Fountain Group, LGB. Water level down 2-3" from rim. |
| 24299 |
07 Oct 2022 @ 1240 |
--- |
Tara |
Old Bellefontaine, Fountain Group, LGB. Crater empty, first time I have seen this in over 2 months. As of 1315, steam seemed to indicate a rising pool level but it was not.visible yet. |
| 24261 |
05 Oct 2022 @ 1413 |
--- |
cb |
Norris sinks- Norris back basin. Active still. Main vent eruptions to 1' & its side vent blooping 1-3". platform is white. Pool to the SW has 3 active vents erupting 1-3"; color is green and clear |
| 23985 |
21 Sep 2022 @ 1230 |
--- |
CrisG |
Mammoth update: Grassy Springs flow stops around the near edge of the three way boardwalk intersection. Dryad is dry. Not even a puff of steam. Canary is extending more in the direction of Jupiter Terrace. Water is not filling the old vent. Decent flow down Marble Terrace. New Blue is pretty and flowing into the terraces. A small trickle is reaching the bottom of the hill. Narrow Gauge has great color to the far end. Orange Spring Mound is still flowing well from the end near the road. Prospect Spring still active, though flow much less than on my June visit and not threatening the road. Mound Spring is still flowing well. Palette is flowing well from the pool west of Devil's Thumb. Thankfully the flow is more away from the Thumb. The pool to the east of the Thumb is not overflowing the terrace as much as usual but appears hotter. The overflow is going south and west of that pool rather than over the side and is pooling hotter water. Cleopatra is unchanged. |
| 23956 |
20 Sep 2022 @ 1607 |
--- |
ypcaribou |
Root Pool. Water joined in middle. Murky, sour yellow green. |
| 23921 |
19 Sep 2022 @ 1223 |
--- |
CP |
Occasionally, two or three eruptions merged together, giving the appearance of a longer duration. |
| 23639 |
07 Sep 2022 @ 0840 |
--- |
MAB |
NGB Lava Pool Complex circular spouter seen off last visit now seen IE - too steamy to see if perpetual or periodic |
| 23619 |
07 Sep 2022 @ 0825 |
--- |
aferrara |
Vents west of Jewel noisily bubbling at depth. |
| 23371 |
23 Aug 2022 @ 1600 |
--- |
MAB |
NGB Lava Pool Complex- the little orange circular spouter seen perpetually IE all season now quiet at least thru 1800 |
| 23301 |
20 Aug 2022 @ 0921 |
--- |
steve |
Son of Scummy is full and not erupting |
| 23256 |
18 Aug 2022 @ 0936 |
--- |
MAB |
NGB Son of Green Dragon audible splashing |
| 23206 |
15 Aug 2022 @ 1609 |
--- |
steve |
The water level goes in Blue Funnel is up about 6 inches and the water level in Oil Slick Pool is up about a foot or so. |
| 23205 |
15 Aug 2022 @ 1604 |
--- |
steve |
Waterfall Geyser in West Thumb has visible water now. |
| 23179 |
14 Aug 2022 @ 0950 |
--- |
ypcaribou |
Semi Centennial - Time approximate. Pool was a 24 oz coffee with 1 cream dark muddy brown. One area of pool close to road, about 5 - 10 ft in diameter, was a lighter Latte brown. |
| 23133 |
10 Aug 2022 @ 2044 |
--- |
Tara |
Old Bellefontaine, Fountain Group, LGB. Looks to be completely drained, no water or steam visible. |
| 23131 |
10 Aug 2022 @ 1210 |
--- |
Janet Jones |
“Vandalized Spring” at West Thumb Geyser Basin is overflowing. |
| 23055 |
05 Aug 2022 @ 1321 |
--- |
cb |
Primrose spring group. Porcelain basin. 3 of the 4 pools are empty, 1 closest to the bw is active, high, blue/green in color with 8" boil |
| 22943 |
30 Jul 2022 @ 1430 |
30 Jul 2022 @ 1545 |
LynnS |
Clepsydra’s side vent bursting |
| 22936 |
29 Jul 2022 @ 0945 |
29 Jul 2022 @ 1100 |
LynnS |
Clepsydra’s side vent bursting 1/2 feet above ground. |
| 22935 |
29 Jul 2022 @ 0615 |
29 Jul 2022 @ 0623 |
LynnS |
Clepsydra’s side vent is bursting 1-2 feet above ground |
| 22924 |
28 Jul 2022 @ 1500 |
28 Jul 2022 @ 1630 |
LynnS |
Clepsydra’s side vent bursting 1-2 feet above ground |
| 22923 |
28 Jul 2022 @ 0905 |
28 Jul 2022 @ 1109 |
LynnS |
Clepsydra’s side vent bursting 1-2 feet above ground |
| 22880 |
27 Jul 2022 @ 1230 |
27 Jul 2022 @ 1350 |
LynnS |
Clepsydra’s side vent: Bursting 1-2 feet above ground level |
| 22856 |
26 Jul 2022 @ 1157 |
--- |
cb |
Porcelain basin, Primrose Spring group. 2 of the 4 pools are empty and dry, 1 toward Blue has water but no activity. the 1 pool closest to the bw is still active & greenish blue |
| 22833 |
24 Jul 2022 @ 0845 |
24 Jul 2022 @ 0946 |
LynnS |
Clepsydra’s side vent bursting 1-2 feet above ground |
| 22810 |
23 Jul 2022 @ 1300 |
23 Jul 2022 @ 1401 |
LynnS |
Butsting 1-2 feet above ground. |
| 22809 |
23 Jul 2022 @ 0635 |
23 Jul 2022 @ 0930 |
LynnS |
Clepsydra’s side vent is bursting |
| 22786 |
22 Jul 2022 @ 0535 |
22 Jul 2022 @ 0600 |
LynnS |
Clepsydra’s side vent was full at 0535. At 0550 the water level was dropping quickly; no water was visible in the crater by 0600. |
| 22755 |
21 Jul 2022 @ 0840 |
21 Jul 2022 @ 1001 |
nails |
“Son of Scummy” About a 20 minute cycle from low pool with gentle boiling to overflow with vigorous bursting. Full and bursting at 855, 916, 940, 1000. Bursts 1 to 2 feet. |
| 22782 |
21 Jul 2022 @ 0630 |
--- |
LynnS |
Clepsydra’s side vent bursting 1-2?feet above ground level. |
| 22696 |
19 Jul 2022 @ 1024 |
19 Jul 2022 @ 1033 |
nails |
Son of Scummy filling with vigorous boil. Overflowing at 1027, boiling 6 inches to 1 foot. Water level dropping at 1033. |
| 22694 |
19 Jul 2022 @ 1016 |
--- |
nails |
Son of Scummy water level has dropped at least 6 inches below overflow. Gentle bubbling and blooping. |
| 22784 |
18 Jul 2022 @ 0713 |
18 Jul 2022 @ 0945 |
LynnS |
Clepsydra’s side vent bursting 1-3 feet above ground during this time |