Last Known Eruption
91y 17d 18h 45m ago

Latest Eruptions

Eruption DurationInterval
03 Feb 1932 @ 142645m 1h 1m
03 Feb 1932 @ 13256m 30s 1h 0m
03 Feb 1932 @ 12254m 1h 0m
03 Feb 1932 @ 11254m

Interval Statistics

Interval Count3
Min1h 0m
Max1h 1m
Mean1h 0m
Median1h 0m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
24584 30 Oct 2022 @ 1816 --- ypcaribou Clear blue blue blue
24569 30 Oct 2022 @ 1428 --- ypcaribou Trickle of OF in 3 channels as seen from Norris Sinks
24593 30 Oct 2022 @ 0848 --- MAB Clear and steamy w overflow - 2018 spouter Three Trees ie to 2 or 3 inches
24472 21 Oct 2022 @ 0820 --- MAB Clear, blue, only convection seen zero boils - a few Teeny Tiny bubbles coming out from under east ledge - 2018 spouter Three Trees IE to 3in
24283 06 Oct 2022 @ 1319 --- cb Emerald spring is still calm, clear and more turquoise blue than green.
24270 05 Oct 2022 @ 1130 --- cb still more blue than green, calm, clear & in copious overflow. 3 trees feature is blipping to 2" and putting out small convection waves
24031 23 Sep 2022 @ 1642 --- MAB Beautiful! 2018 spouter Three Trees steamy with visible waves below it
23949 20 Sep 2022 @ 1524 --- ypcaribou Pretty, turqoise blue. Yellow lining pool.In overflow. Feature in trees to left quietly steaming.
23506 31 Aug 2022 @ 1322 --- cb clear, calm, Emerald green & overflowing. 3 Trees feature has developed a ~3-4" in diameter little pool and has a 1" roiling boil and overflowing down ES runoff channel. Has been mostly like this all summer
23283 19 Aug 2022 @ 1402 --- Craigmon99 Clear with slight convection
23103 08 Aug 2022 @ 1837 --- cb no change
23050 05 Aug 2022 @ 1106 --- cb no change with it or the 3 Trees area.
23011 03 Aug 2022 @ 1435 --- cb no change.
22963 01 Aug 2022 @ 1215 --- cb Emerald Spring is in copious overflow, clear, green and has some doming/convection over the vent with a (2) bubbles the size of golf balls that broke the surface. 3 Trees feature is erupting to 3" with runoff.
22945 30 Jul 2022 @ 1711 --- cb clear calm and in overflow
22860 26 Jul 2022 @ 1225 --- cb clear, calm and in overflow
22726 20 Jul 2022 @ 1211 --- cb clear, calm, green & overflowing. 3 Trees feature is active and blipping to 3".
22700 19 Jul 2022 @ 1128 --- cb clear, calm, green & overflowing
22625 16 Jul 2022 @ 1329 --- cb clear, calm, green & slightly in overflow.
22490 11 Jul 2022 @ 1555 --- cb clear, calm, Emerald green in color and in overflow.
22439 09 Jul 2022 @ 1855 --- cb Pool has dropped another few inches below overflow. ridges and stick in front of the runoff channel are exposed. pool is calm, green and clearing
22421 09 Jul 2022 @ 1008 --- cb Emerald Spring is clearing. Not so cloudy, more green than opalescent blue and i can see the edges of the pool. infrequent bubbles & slightly in overflow. Change!
22406 08 Jul 2022 @ 1334 --- cb bubbles have diminished some, not as strong or in as many areas in the pool. Still a fairly consistent string coming fr the main thumb area pool has dropped and is NOT in overflow. Still cloudy turquoise blue color with a distinctive sulfur dust accumulation around the edge. 3 Trees feature is bubbling to 2".
22387 07 Jul 2022 @ 1534 --- cb not in overflow, still cloudy, bubbling and a blue green color.
22386 07 Jul 2022 @ 1221 --- steve The water is cloudy/opalescent with new sulfur deposits.
22359 06 Jul 2022 @ 1113 --- cb no change
22311 04 Jul 2022 @ 1356 --- cb really no change. pool is still a opalescent green/blue color & cloudy. Not in overflow and still bubbling. 3 Trees area is active with small bubblers in its runoff
22286 02 Jul 2022 @ 1301 --- cb no change
22249 30 Jun 2022 @ 1418 --- cb same....
22204 29 Jun 2022 @ 1313 --- cb Cloudy, opalescent lime green color. Still same bubbles. pool has dropped & is no longer in overflow
22179 28 Jun 2022 @ 1437 --- cb Bubble bubble, toil and trouble! Still has the same boils in the same spots. Still lime green, cloudy & overflowing
22148 27 Jun 2022 @ 1140 --- cb Still opalescent lime green, cloudy, bubbling in same areas & overflowing.
22141 26 Jun 2022 @ 1832 --- cb ES has 3 areas in the Thumb of the pool that have a smallish roiling boil. (about 1.5' in D & blooping to a few inches.) 2 more smaller vents on the other side of the run off channel. It is in overflow, lime green and very cloudy. The 3 trees feature is the same as yesterday.
22128 25 Jun 2022 @ 1937 --- cb Emerald Spring has increased areas with small bubblers breaking the surface
22111 25 Jun 2022 @ 1029 --- cb 4D19H. ES Is a cloudy opalescent lime green color with roiling bubbles breaking the surface in the thumb on the boardwalk side of the pool. The pool is lower & in weak overflow. The 3 Trees breakout has a ~2" consistent boil with a breakout bubbler between it & ES in the green bacterial mat.
22102 24 Jun 2022 @ 0754 --- bbev Continued steady boil from two separate areas on near side of pool. Occasional boils from several other areas along that boardwalk side of pool. Pool is cloudy, murky green. No boil or bubbles seen yesterday. Harry the hare on guard
22063 22 Jun 2022 @ 1309 --- cb Pea soup yellowy, brown, green color, cloudy, calm & overflowing
21915 11 Jun 2022 @ 0815 --- cb clear, calm, green & overflowing
21787 06 Jun 2022 @ 1110 --- cb calm, overflowing, a bit cloudy (could be due to rain) and a dark green color. not its usual emeraldy color. could also be from rain events.
21692 03 Jun 2022 @ 1423 --- cb calm clear GREEN & in overflow
21636 01 Jun 2022 @ 1350 --- cb ES is clear, calm, overflowing and green
21542 27 May 2022 @ 1835 --- cb calm green and in overflow
21517 26 May 2022 @ 1400 --- cb clear, green in color, calm & overflowing
21466 24 May 2022 @ 1854 --- cb clear calm greenish and in overflow
21396 20 May 2022 @ 2105 --- ypcaribou Per SB note: ES calm, clear, and I think in overflow.
21349 17 May 2022 @ 0800 17 May 2022 @ 2000 ypcaribou Per SB entry: Emerald Spring calm and clear throughout the day.
21325 16 May 2022 @ 1355 --- Tara Clear, calm, and overflowing, blue-green color.
21276 14 May 2022 @ 1008 --- cb clear, calm, green & in nice overflow.
21211 07 May 2022 @ 1400 --- cb clear, calm, overflowing and greenish blue in color. 3 Trees feature is seeping water down the runoff channel, not bubbling or erupting.
21164 04 May 2022 @ 1445 --- cb ES is calm, emerald green in color, no bubbles & in slight overflow
21003 18 Apr 2022 @ 1845 --- MAB Very pretty - clear n calm - in decent ovfl out left channel - the 2018 spouter Three Trees was steamy w only the tinest of tiny waves visible in its waters
20947 06 Apr 2022 @ 1049 --- SteveO Overflowing and clear.
20609 07 Dec 2021 @ 0944 --- mwolf calm, no bubbles, more blue than green, not cloudy, overflowing
20271 03 Nov 2021 @ 1720 --- cb clear, blue, calm and overflowing
20150 27 Oct 2021 @ 1322 --- cb clear, calm, blue and in overflow
20123 25 Oct 2021 @ 1230 --- cb EMERALD SPRING is a little cloudy, VERY turquoise blue, no bubbles & overflowing.
20070 21 Oct 2021 @ 1307 --- mwolf calm, clear, blue, just barely overflowing
20062 19 Oct 2021 @ 1545 --- cb clear, calm, blue & in overflow
19997 16 Oct 2021 @ 1131 --- cb EMERALD SPRING is clear calm & in overflow
19982 15 Oct 2021 @ 1240 --- cb EMERALD SPRING is turquoise blue, clear, calm & overflowing.
19937 08 Oct 2021 @ 1056 --- cb 9D 21.5H PE.. Emerald spring is clear, calm, turquoise blue and in overflow. THAT WAS brief!
19934 07 Oct 2021 @ 1716 --- cb EMERALD SPRING is a bit clearer today with fewer bubbles & more blue than pea green again. Definitely not clear tho! It is still in overflow.
19913 06 Oct 2021 @ 1024 --- cb pool is a cloudy pea soup green color with skattered bubbles breaking the surface on the east side, in the thumb.
19893 05 Oct 2021 @ 1815 --- cb EMERALD SPRING is a cloudy greenish color and there are tennis ball& ping ping ball sized bubbles breaking the surface on the east side of the pool and by the outlet channel. (bw side) It is in overflow. The 3 trees feature is active again with 3 more small vents (quarter sized) in its runoff channel. HUM, DOES this explain the SV major minor, the 40° spike on the temperature graph, that happened on 10/3 @ ~1900?
19856 02 Oct 2021 @ 1300 --- cb clear, calm, in overflow & more blue than green
19806 30 Sep 2021 @ 1153 --- cb Emerald spring is clear, calm, turquoise & in overflow.
19750 26 Sep 2021 @ 1200 --- cb clear, calm more blue than green and in overflow
19577 15 Sep 2021 @ 0844 --- cb EMERALD SPRING is calm and in overflow.
19543 13 Sep 2021 @ 1754 --- cb Pool is high, in overflow, clear, calm & blue green in color.
18740 30 Jul 2021 @ 0540 --- ypcaribou Well below overflow. Scalloped edges sticking out above water level. Clear & "chlorinated swimming pool blue."
18576 22 Jul 2021 @ 0918 --- Tara Calm, clear, greenish blue, down about 2 inches below rim with no overflow. side vents overflowing lightly.
18389 12 Jul 2021 @ 1813 --- cb Pool is VERY low! 2" of exposed sinter rim in front of the runoff channel. needless to say it is NOT in overflow. Pool is a milky (cloudy) opalescent turquoise blue color, has more and slightly bigger bubbles (golf ball-tennis ball sized) breaking the surface in the thumb and side closest to the boardwalk, also one area on the far side of the pool.
17990 21 Jun 2021 @ 1000 21 Jun 2021 @ 1100 Polly Time approximate. Emerald seemed to be getting clearer during this time.
17942 20 Jun 2021 @ 1232 --- cb pool is cloudy and more blue than green this afternoon.
17600 09 Jun 2021 @ 1000 --- Tara Greenish blue, clear, and calm.
17627 09 Jun 2021 @ 0902 --- novakg Quiet with slight SW overflow.
17580 08 Jun 2021 @ 1001 --- cb clear, calm, green in color and on slight overflow
17522 07 Jun 2021 @ 0802 --- cb steamy, clear, calm & slightly overflowing
17472 05 Jun 2021 @ 1010 --- cb clear, calm, green and SLIGHTLY overflowing. just enough to dampen the channel
17440 04 Jun 2021 @ 1605 --- cb clear, calm and runoff channel is damp but no obvious sign of overflow. I think the occational wind gust is forcing water over the ridges and into the channel.
17443 04 Jun 2021 @ 0935 --- cb clear, calm and blue/green in color. Not in overflow. 3 Trees features are not as active.
17387 02 Jun 2021 @ 1437 --- Tara Clear and calm.
17383 02 Jun 2021 @ 0945 --- Tara Slightly murky, calm, blue-green color.
17330 01 Jun 2021 @ 0939 --- cb slightly cloudy, more blue than emerald green, calm and just slightly overflowing.
17272 30 May 2021 @ 1513 --- cb Pool us clear, greenish and mostly calm. it is slightly in overflow. It has a few occasional quarter sized bubbles that break the surface. they are mostly on the east edge of the pool by the thumb. The "3 trees" feature that is outside the pool toward the boardwalk is erupting 3" and putting a fair amount of water down Emeralds run off channel.
19303 30 May 2021 @ 0925 --- research-mab 30 May 2021 @ 0925 BEN VL EMERALD See Note under Steamboat Emerald cloudy this morning (low wind) but cleared up quite a bit by the time I left. It seems like it has been alternating btwn clear and cloudy each day for a while. Echinus has also been alternating clear and murky each day. It seems that whenever ES is clear, Echinus has been that cloudy filthy brown color from last year, and visa versa. The one note where I saw something sort of interesting from a few days ago, ES was clear and Echinus was murky. https://geysertimes.org/note.php?id=17268
17249 29 May 2021 @ 1800 --- bbev Emerald is clear, overflowing, and bubbling at both near and far sides of pool. Small marble sized bubbles every 15-20 seconds in several different areas.
17227 28 May 2021 @ 1010 --- Suzanne The periodic bubbler was seen at the back side of the pool, the same one that was seen on May 26. No bubbles seen on the front side. Pool was slightly cloudy.
17231 28 May 2021 @ 0926 --- bbev Little cloudy. Golf ball sized bubbles on far side of pool. Not overflowing.
17226 28 May 2021 @ 0700 --- Suzanne There were periodic small bubbles seen at the front of the pool, the side near the boardwalk. it was too steamy to see the back.
17191 26 May 2021 @ 1000 --- Suzanne Pool was green but slightly cloudy and barely overflowing. There was a small bubbler near the edge of the pool on the side farther from the boardwalk. I saw it at 1000 and 1030 but it had stopped when we walked by at 1125. It resumed at about 1130 and the bubbles were very frequent (about 1 every 2 seconds).
17149 20 May 2021 @ 0830 --- cb Nicely overflowing. clear, calm with no bubbles
17137 19 May 2021 @ 1827 --- cb Emerald spring's pool is SLIGHTLY in overflow. It was not at around 1000. color is more aguamarine blue than green and it has some small bubbles that break the surface. The 2 bubblers in the 3 Trees area have increased in activity and are putting more water down ES runoff channel.
17117 17 May 2021 @ 1600 --- cb Pool is higher than I've observed. Clear, green, calm and good overflow
17086 14 May 2021 @ 0850 --- cb Steamy blue greenish in color. no audible bubbling sounds. in very slight overflow. 3Trees features overflowing slightly.
17052 11 May 2021 @ 1520 --- Tara calm, light greenish blue color, overflowing lightly
17048 11 May 2021 @ 1048 --- cb MUCH clearer, color is blue green. a VERY slight trickle of overflow. 3 Trees feature is steaming and producing water down the runoff channel but no visable "eruptive" activity.
17041 10 May 2021 @ 1308 --- User34 Clear, calm, barely overflowing
17021 09 May 2021 @ 1130 --- cb color is still a cloudy milky turquoise blue. The pool has come up a bit but still not overflowing down the runoff channel. The bubbles have decreased is size and quantity. Just a few that break the surface in the "thumb" area and are the size of a Meyer 🍋 lemon!
17013 08 May 2021 @ 1500 --- cb Emerald spring is still very cloudy, milky turquoise blue in color. Much like I've seen Cistern look like! It still has tennis ball-grape sized bubbles breaking the surface and sending out convection waves, mostly along the side closest to the boardwalk. pool is low and NOT in overflow. The 3 Trees feature on the side of Emerald, closest to the boardwalk, has 2 small vents erupting 2 - 3". I call it 3 Trees because there are 3 fallen dead trees and these vents are close to the base of those 3 dead trees.
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