| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 41067 |
14 Aug 2025 @ 1017 |
--- |
underarockphoto |
High and boiling. Boil in the middle of the pool was 4ft in diameter and up to 5 inches tall. |
| 40995 |
11 Aug 2025 @ 1820 |
11 Aug 2025 @ 1844 |
MAB |
steady boils from both vents look a little more intense than last week with busier boils all along sides - terraces red and clear of sediments |
| 40996 |
11 Aug 2025 @ 1820 |
11 Aug 2025 @ 1844 |
MAB |
steady boils from both vents look a little more intense than last week with busier boils all along sides - terraces red and clear of sediments |
| 40839 |
05 Aug 2025 @ 1831 |
05 Aug 2025 @ 1846 |
MAB |
strong boils both vents - some reaching 6-8in - terraces collected some sediments since 27th |
| 40653 |
27 Jul 2025 @ 1827 |
27 Jul 2025 @ 1837 |
MAB |
Steady boils a little wider and stronger than 19th - water is clear - terraces red |
| 40495 |
19 Jul 2025 @ 1835 |
19 Jul 2025 @ 1855 |
MAB |
a few more sediments than 13th but still red - neat lighting can see white bubbles coming up from the deep below thru the sligjtly murky but still clear green - like Whirligig |
| 40390 |
13 Jul 2025 @ 1827 |
13 Jul 2025 @ 1853 |
MAB |
clear w strong meter wide boil some bulging up to a ft - 2nd vent also bubbling to 6-8in - edges clear w some sediments nearer the center - terraces red |
| 40243 |
06 Jul 2025 @ 1444 |
--- |
Delta4Heavy85 |
Fully red again with 3 point boil |
| 40165 |
30 Jun 2025 @ 1400 |
--- |
mhreed |
No grey sediment left. Red, reddish green in center. Light boiling from two spots. |
| 40132 |
28 Jun 2025 @ 1830 |
28 Jun 2025 @ 1855 |
MAB |
clays seem cleared up but lighting is low from passing storm - typical boils from both vents |
| 39953 |
20 Jun 2025 @ 1748 |
20 Jun 2025 @ 1835 |
MAB |
colors really coming back since 13th - strong rolling boils - clear |
| 39864 |
13 Jun 2025 @ 1744 |
13 Jun 2025 @ 1820 |
MAB |
a little cloudy but strong clear boils - red deposits seem to be appearing again after the burp - particularly along the edges |
| 39758 |
08 Jun 2025 @ 1805 |
08 Jun 2025 @ 1820 |
MAB |
big rolling boils |
| 39676 |
05 Jun 2025 @ 1755 |
05 Jun 2025 @ 1811 |
MAB |
wide boil left- Lesser on right - terraces still full of French gray color clays |
| 39555 |
31 May 2025 @ 0733 |
--- |
ypcaribou |
Waves on Echinus! Reddish area mostly a light tan now. |
| 39501 |
29 May 2025 @ 1750 |
29 May 2025 @ 1820 |
MAB |
strong boil good waves- appears to have burped and coughed up sediments evenly covering the red terraces |
| 39333 |
24 May 2025 @ 1855 |
--- |
MAB |
strong and wide boils w nice waves - some splash to a foot |
| 39240 |
21 May 2025 @ 1510 |
21 May 2025 @ 1610 |
MAB |
still strong busy boils with wide upwelling and doming - boils not too tall - possibly less waves than last seen 12th but it's really windy - when winds subside can see increased activity from the bubblers in the shallow part towards bleachers |
| 39073 |
15 May 2025 @ 1633 |
--- |
bbev |
There are no visible signs of a recent eruption. Pool clear, with steady boll. |
| 39022 |
12 May 2025 @ 1845 |
--- |
MAB |
heavy roil creating waves |
| 38960 |
10 May 2025 @ 1703 |
10 May 2025 @ 1732 |
MAB |
strong rolling boils - thunderstorm moving in I'm moving out! EDIT: left Echinus did a video at Black Pit then continued on and was surprised to hear something noisier than Black Pit to my right! NEW breakout- will add details in OTHER GEYSER when I get better time from my photos |
| 38790 |
03 May 2025 @ 1716 |
03 May 2025 @ 1803 |
MAB |
wide incessant boil center SW vent - 2pt boil N vent - many many boils n bubbles around pool edge |
| 38660 |
27 Apr 2025 @ 1816 |
27 Apr 2025 @ 1848 |
MAB |
center boil more agitated than 19th w high and wide bulges and more waves pulsing out - some bloops reach almost a foot - Black Pit vent that was high pressure steam last fall still flooded and perpetually IE |
| 38592 |
23 Apr 2025 @ 1133 |
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DanS |
Steady blooping boils, seems largely unchanged from last year. |
| 38540 |
19 Apr 2025 @ 1652 |
19 Apr 2025 @ 1747 |
MAB |
Busy boils from both vents plus from all the wannabes along the shore - last Oct high pressure steam vent in Black Pit is now a perpetual spouter |
| 38405 |
10 Apr 2025 @ 1153 |
--- |
SantaFe108 |
Clear and overflowing, center splashy-boil. |
| 38271 |
23 Feb 2025 @ 1430 |
--- |
K.Cooper |
lightly overflowing, audible bubbling but too steamy to see |
| 37900 |
31 Oct 2024 @ 1650 |
--- |
SantaFe108 |
Splashy center boil, overflowing with a blue center. Black Pit's steam vent still going strong, the small spouter in the sand across from Black Pit is still not ie, just bubbling and overflowing. |
| 37844 |
29 Oct 2024 @ 1714 |
29 Oct 2024 @ 1726 |
MAB |
disimproving - much stronger action from main vent with waves going across the pool - some bloops to a foot in height -
Edit: BLACK PIT had a loud forceful steam vent on the N edge - subterranean water level drop I'd guess. At first I thought it was a collapse or blowout but the rim of that noisy vent is visible in earlier pics with hard-to-see-possible-water. |
| 37809 |
27 Oct 2024 @ 1411 |
27 Oct 2024 @ 1516 |
MAB |
wide strong center boil plus low boil from 2nd vent - darn - however these are fairly consistent without much real splashing or actual bloops so will see- the 2y-old sandy feature towards Vermilion area not splashing |
| 37747 |
24 Oct 2024 @ 1551 |
--- |
DanS |
Multi point boils. Easternmost seems more vigorous than in April. |
| 37722 |
24 Oct 2024 @ 1542 |
--- |
SantaFe108 |
Clear and blue, multi-point center boil with overflow. Feature across from Black Pit full and overflowing, bubbling from all over the pool. |
| 37644 |
19 Oct 2024 @ 1519 |
--- |
MAB |
strong center boils + over NE vent and all the usual suspects scattered round the edges |
| 37473 |
10 Oct 2024 @ 1010 |
--- |
SantaFe108 |
Overflowing, multiple center boils, very obscured with steam. Feature across from Black Pit no longer has wood piece inside, but still not ie. 4" below overflow. |
| 37382 |
03 Oct 2024 @ 1535 |
--- |
SantaFe108 |
Murky green in center, multi point boil. In overflow. Little spouter across the BW from Black Pit not ie. |
| 37244 |
29 Sep 2024 @ 0906 |
--- |
TSBryan |
too steamy to see but pool essentially calm |
| 37216 |
28 Sep 2024 @ 1632 |
--- |
cb |
pool is clear with a good ~6" blooping boil over the main vent and side vent to 3". |
| 35429 |
21 Jun 2024 @ 1557 |
21 Jun 2024 @ 1601 |
nails |
Clear and overflowing with splashy boiling in the center and a smaller area bubbling on the west side. |
| 35331 |
19 Jun 2024 @ 1022 |
--- |
Craigmon99 |
Multipoint center boil continues. Some bubbles up to 3 inches. Convection around boil smoothing out ripples |
| 35332 |
19 Jun 2024 @ 1022 |
--- |
Craigmon99 |
Multipoint center boil continues. Some bubbles up to 3 inches. Convection around boil smoothing out ripples |
| 35084 |
10 Jun 2024 @ 1241 |
--- |
SantaFe108 |
Multi-point boil in center, clear water and overflowing. |
| 34996 |
08 Jun 2024 @ 1103 |
--- |
cb |
clear, slight boils in several spots in the pool & along the north edge of the pool. in overflow |
| 34695 |
26 May 2024 @ 0730 |
--- |
ypcaribou |
Calm and clear with 3 point bubbling |
| 34541 |
13 May 2024 @ 1737 |
--- |
cb |
typical roiling boil over both vents. pool clear& overflowing. nothing unusual |
| 34326 |
24 Apr 2024 @ 0959 |
--- |
DanS |
Quiet blooping pool. |
| 34266 |
19 Apr 2024 @ 1549 |
19 Apr 2024 @ 1600 |
MAB |
clear green with orange-ish red edges - steady 3-6 inch boils from primary and secondary vent plus bubbles from those lil vents around the edges |
| 34080 |
01 Mar 2024 @ 0942 |
--- |
JR |
Calm, clear, bubbly. |
| 33906 |
24 Jan 2024 @ 1330 |
--- |
JR |
Stronger bubbling, audible splashes, perky....up to 1' from main vent... rusty edges, clear blue center. No water level change. |
| 29035 |
22 Oct 2023 @ 0843 |
--- |
SantaFe108 |
Steam obscured. Overflowing with splashy multi-point boil in the center. |
| 28966 |
21 Oct 2023 @ 1512 |
--- |
JR |
Nice bubbles, a bit stronger than usual. Blue, clear. |
| 28932 |
20 Oct 2023 @ 1621 |
--- |
MAB |
2 point boil - main vent strongest - clear |
| 28873 |
19 Oct 2023 @ 1123 |
--- |
DanS |
Blooping 3 point boils with occasional small splashes. |
| 28760 |
14 Oct 2023 @ 1305 |
--- |
SantaFe108 |
Clear and blue, sporting three point boil in center, boiling on the shelf towards the upper platforms. |
| 28630 |
05 Oct 2023 @ 1140 |
--- |
cb |
clear with a roiling boil over both vents |
| 27593 |
14 Aug 2023 @ 1515 |
--- |
cb |
pool is clear. blooping boil over center vent ~8"-1' in height |
| 27300 |
28 Jul 2023 @ 2049 |
--- |
SantaFe108 |
Splashy center boil, weaker boiling towards the elevated platforms. |
| 27170 |
23 Jul 2023 @ 1418 |
--- |
mhreed |
Light boil. |
| 26942 |
08 Jul 2023 @ 1910 |
--- |
nails |
Bubbling in two places, center bubbling is more vigorous than NW |
| 26822 |
04 Jul 2023 @ 0845 |
--- |
MAB |
steam fest but strong boil of NW vent briefly visible - waves from center vent all that was visible |
| 25856 |
28 May 2023 @ 1935 |
--- |
SantaFe108 |
Bubbling from several points. Center of pool is a clear blue with tan and red edges. |
| 25666 |
21 May 2023 @ 1447 |
--- |
SantaFe108 |
Bubbling from several points. Edges are bright red but cannot see center of pool due to lighting. |
| 25461 |
15 May 2023 @ 1848 |
--- |
ypcaribou |
Clear blue in middle, red at edges, 3 point boil with occasional small splash from furthest point boil. |
| 24529 |
29 Oct 2022 @ 1416 |
--- |
MAB |
5 min obs - strong roiling from both vents but the little fill vents closest to the bleachers were the entertaining ones w good sputtering noises |
| 24246 |
05 Oct 2022 @ 1155 |
--- |
cb |
steamy with a 1' boil over the center vent and ~8" boil over the vent closest to the bleachers |
| 24071 |
24 Sep 2022 @ 1313 |
--- |
CrisG |
water clear. nice clear blue center with 2 point boil. edges of pool a pretty rusty red |
| 24072 |
24 Sep 2022 @ 1313 |
--- |
CrisG |
water clear. nice clear blue center with 2 point boil. edges of pool a pretty rusty red |
| 23953 |
20 Sep 2022 @ 1555 |
--- |
ypcaribou |
Clear water, rusty red around outer edges of pool, dark seafoam green in middle. Constant roiling in 2 spots plus bubbling in a third. Nice overflow over terracing. Channel greenish starting about 25 ft from pools edge. |
| 23493 |
31 Aug 2022 @ 1033 |
--- |
cb |
The repairs on the bleachers are AWESOME! Some of the old rotted wood has been replaced on the steps, benches & platform. nice job! Its pool is clear with a ~4" blooping boil over the main vent and a ~2" blooping boil over the vent closest to the bleachers. |
| 23330 |
21 Aug 2022 @ 1131 |
--- |
ypcaribou |
Very rusty red around edges, water quite clear, swimming pool blue, and boiling in 2 spots. Looks like the activity seen in the early 90's right before an eruption started. Not suggesting it will erupt! Just comparing activity to paint a picture. |
| 23076 |
06 Aug 2022 @ 1118 |
--- |
cb |
clear, blueish & a roiling boil |
| 23047 |
05 Aug 2022 @ 1028 |
--- |
cb |
pool is clear and blueish. The yellowy sulfer dust that had clouded the pool 2 days ago (8/3) and coagulated into swirling/shape changing groups yesterday (8/4) is gone. pool clear |
| 23008 |
03 Aug 2022 @ 1456 |
--- |
cb |
color of the pool has changed to a yellowy light brown color from clear & blueish yesterday. Boil has decreased also to a roiling boil in both vents. |
| 22978 |
02 Aug 2022 @ 1000 |
--- |
cb |
From the upper platform, water is clear with a 6" roiling blooping boil over the main (center) vent. Side vent bubbling to a few inches. |
| 22967 |
01 Aug 2022 @ 1910 |
--- |
cb |
pool is high and clear. water is covering the red spines with some runoff in the small red side overflow channel by the lower benches. It has an ~6-8" roiling blooping boil over the main vent & a smaller ~3" boil over the side vent toward the higher bleachers. |
| 29093 |
21 Jul 2022 @ 1200 |
--- |
research-mab |
7/21/2022 -no time noted - Echinus is clearer, not totally clear |
| 22564 |
14 Jul 2022 @ 1318 |
--- |
cb |
crystal clear with a 6" roiling boil in the center. 2" on the side |
| 22289 |
02 Jul 2022 @ 1320 |
--- |
cb |
pool is clear with a 3-4" roiling blooping boil over the 2 center vents. |
| 22207 |
29 Jun 2022 @ 1340 |
--- |
cb |
2 vents have ~6"-8" boil still. much the same |
| 22143 |
26 Jun 2022 @ 1857 |
--- |
cb |
Pool is clear, high and has good runoff. 2 main vents in the center have a really vigorous boil & are blooping to ~6". Still lots of small vents along the shore below the Grand Stands |
| 22114 |
25 Jun 2022 @ 1108 |
--- |
cb |
Echinus also has a 4" vigorous roiling & blooping boil in the 2 main vents but has many areas with small bubbles breaking the surface on the Grand Stand Bench side of the pool. In good overflow. Pool is very steamy! |
| 21902 |
10 Jun 2022 @ 1309 |
--- |
novakg |
Echinus was in a rolling boil during Steamboat. The two main vents were boiling to a foot or so. |
| 21346 |
16 May 2022 @ 2030 |
16 May 2022 @ 2050 |
Polly |
2 temperature spikes on the YVO temperature graph: Echinus temp spike approx 20:30 from 30C to 43C. Dropped to 17C. Spiked again at approx 20:50 to 50C followed by drop to 14C. Possible minor eruptions. |
| 21335 |
15 May 2022 @ 1313 |
--- |
Tara |
Ucky brown water, heavy overflow. |
| 21178 |
05 May 2022 @ 1336 |
--- |
cb |
clear with a 6" roiling, blooping boil out of the vent toward the south |
| 21074 |
24 Apr 2022 @ 1639 |
--- |
DanS |
Quiet 2 point boil |
| 21006 |
18 Apr 2022 @ 1735 |
--- |
MAB |
watched ~40min while adding GT notes - moderate boil from 2 vents - main vent seemed to pause a bit then resume- more bbls but smaller bubbles than the other vent which stayed fairly constant- hard to see in swirling winds and flat light |
| 20981 |
11 Apr 2022 @ 1100 |
--- |
Polly |
Spike on the graph looks like a possible minor at about this time. |
| 20145 |
27 Oct 2021 @ 1231 |
--- |
cb |
pool is high & clear with 2 roiling boiling points near center. |
| 20059 |
19 Oct 2021 @ 1458 |
--- |
cb |
pool is clear with a blooping 3" boil in 2 places. |
| 20020 |
17 Oct 2021 @ 1631 |
--- |
MAB |
light boils in two spots |
| 19924 |
06 Oct 2021 @ 1640 |
--- |
cb |
clear w a vigorous blooping boil |
| 19915 |
05 Oct 2021 @ 1210 |
--- |
MAB |
Very strong center boil 3-5 in |
| 19604 |
16 Sep 2021 @ 1007 |
--- |
cb |
Pool is high, overflowing nicely, is clear with both main vents having a 2" roiling boil. |
| 18691 |
27 Jul 2021 @ 1553 |
--- |
cb |
weak blooping boil over the 2 main vents to 1"-2". moderate overflow and the pool is clear and greenish. |
| 18661 |
25 Jul 2021 @ 0934 |
--- |
cb |
54° & Very steamy this morning and impossible to see the pool. It is putting out a lot of water down the runoff channel. |
| 18502 |
18 Jul 2021 @ 1025 |
--- |
cb |
pool is in good overflow with both vents gently roiling. no bloops. |
| 18373 |
11 Jul 2021 @ 1419 |
--- |
cb |
pool is clear, moderate overflow, main vent has a roiling boil to 6". N. vent roiling just at the surface. |
| 18188 |
29 Jun 2021 @ 1256 |
--- |
cb |
very clear and high pool with a vigorous blooping boil in both vents |
| 18115 |
27 Jun 2021 @ 1114 |
--- |
TheHikingDude |
Boiling in 5 different parts of the pool, some boils going to about a foot. |
| 17994 |
21 Jun 2021 @ 1030 |
--- |
Polly |
Echinus is still orange around the edges. There were 2 boils in the center and what appeared to be tiny sizzlers near the left edge of the pool. |