Last Known Eruption
87y 283d 5h 47m 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
13959 18 Oct 2019 @ 1745 --- MAB calm- slight overflow in left channel
13921 11 Oct 2019 @ 1248 --- underarockphoto Not in overflow. Just at the cusp. Crystal clear blue.
13912 10 Oct 2019 @ 1528 --- underarockphoto Clear and in overflow
13744 18 Sep 2019 @ 1756 --- cb clear calm and in overflow
13725 17 Sep 2019 @ 0800 --- bbev In overflow, clear and calm
13716 16 Sep 2019 @ 1215 --- Polly Emerald is very clear and full. No bubblers nor steam seen in any If the vents around the perimeter.
13702 15 Sep 2019 @ 1738 --- cb in overflow
13683 13 Sep 2019 @ 1600 --- cb pool is just below overflow. Feature to the east in the trees is putting out alot of water into ES runoff channel. ES pool is calm, blue green, and steamy
13617 07 Sep 2019 @ 1309 --- Polly Emerald looks clear & calm. It is overflowing.
13601 02 Sep 2019 @ 1600 --- Polly Emerald’s pool has pulled back. I could not see any runoff. There may have been a tiny boil. Feature to the left is overflowing. Emerald is very clear.
13499 01 Sep 2019 @ 2000 --- Janet Jones Below overflow. Looking at photos, it was in overflow at 1315.
13405 25 Aug 2019 @ 1740 --- WillBoekel clear, calm, and overflowing.
13372 24 Aug 2019 @ 0727 --- cb pool is low and not in overflow. Feature in the 3 fallen trees to the NE is pumping a lot of water into ES runoff channel. Booping to 3".
13825 16 Aug 2019 @ 2100 --- Ben VL Clear and calm. Blue/green color deeper down. Info sign had fallen off. Propped it up against the railing.
13289 16 Aug 2019 @ 1803 --- cb pool is BARELY in overflow. it's clear, blue green in color. Last years feature in the east trees (3 trees spring?) is really pushing out a lot of water into Emeralds runoff channel.
13218 13 Aug 2019 @ 1646 --- cb clear, calm, no bubbles, blue green in color & just BARELY in overflow. Little feature in the base of the 3 dead trees from last year is erupting to 3" with heavy outflow into Emeralds runoff channel.
13157 11 Aug 2019 @ 0745 --- RMichaels Lightly overflowing, calm, and fairly clear.
13135 09 Aug 2019 @ 1514 --- cb pool is coming up. close to overflow. no more bubbles, clear and green again.
13119 09 Aug 2019 @ 0749 --- bbev Almost to overflow, clear, occasional bubbles.
13117 08 Aug 2019 @ 1732 --- bbev ~1" below overflow.
13104 08 Aug 2019 @ 0741 --- bbev Still below overflow but has come up some. few bubbles.
13095 07 Aug 2019 @ 1723 --- cb more clarity in the whole pool. still down 3 - 4" from overflow. A few areas with random bubbles breaking the surface. Last years thing on the SE shoulder in the trees is erupting/pulsing to ~3".
13084 07 Aug 2019 @ 0727 --- bbev Still 3-4" below overflow, cloudy, few if any bubbles, but very steamy and hard to see pool.
13074 06 Aug 2019 @ 1705 --- cb fewer bubbles and the pool is still very low. ( ~4" below overflow) it is greenish along the edges but mostly a milky turquoise blue.
13062 06 Aug 2019 @ 0740 --- bbev Still 3-4" below overflow. A few less bubbles.
13032 04 Aug 2019 @ 1908 --- bbev 3-4" below overflow, still having large bubbles on SW side of pool.
13000 03 Aug 2019 @ 0730 --- cb not much change from yesterday. pool is 4 - 5" below overflow. milky blue green in color. Occasional tennis ball sized bubbles breaking the surface on the east edge.
12964 02 Aug 2019 @ 1735 --- bbev Pool is down 3-3.5 " below overflow. Bubbling in same areas.
12975 02 Aug 2019 @ 0920 --- MAB low - no bubbles or overflow. very steamy
12947 02 Aug 2019 @ 0749 --- bbev Remains cloudy and 1.5" below overflow. Still bubbling but difficult to see due to heavy geyser fog.
12927 01 Aug 2019 @ 1731 --- bbev 1.5-2" below overflow, bubbling near side of pool. Cloudy, torquoise pool.
12918 01 Aug 2019 @ 0955 --- cb still a milky turquoise blue color with random tennis ball sized bubbles that break the surface along the NE edge of the pool. pool is low and not in overflow. Last years break out by the dead trees is quieter today but the 1/2 dollar sized hole to the N of it is more active.
12897 31 Jul 2019 @ 1547 --- cb ES is now a milky/cloudy aqua blue color. Is not in overflow. still has bubbles breaking the surface anywhere from 1/2" - 3" in diameter along the edge closest to the bw and by the runoff channel. Feature from last year south of the thumb is erupting/pulsing constantly to 3".
12884 31 Jul 2019 @ 0715 --- cb Same areas have the same bubbles as yesterday afternoons observation. A little hole to the right of last years small breakout south of Emeralds thumb is gurgling and sputtering up to an inch and putting out convection waves.
12873 30 Jul 2019 @ 1635 --- cb 5 areas, in the thumb and around the edge of the pool closest to the boardwalk there are softball sized bubbles breaking the surface and sending out moderate sized convection waves into the pool! Pool is still Emerald green in color.
12853 28 Jul 2019 @ 1031 --- ypcaribou Deep blue middle, greenish toward edges, yellow on "shelf" around edge. Full.
12525 19 Jul 2019 @ 1058 --- cb pool is low and just barely in overflow.
12438 11 Jul 2019 @ 1545 --- cb calm and NOT in overflow. runoff channel dry from the pool down 10'. The breakout to the south has a good flow of water and is putting water down emeralds runoff channel.
12021 29 Jun 2019 @ 0750 --- cb ES is very low and barely in overflow. The exposed edges of the pool are caked white
12031 28 Jun 2019 @ 2010 --- Polly Emerald is clear & calm and has very little overflow.
12420 26 Jun 2019 @ 1054 --- Polly Emerald Spring is clear and calm.
11852 17 Jun 2019 @ 0803 --- udo Clear and overflowing.
11825 16 Jun 2019 @ 0955 --- cb early this morning ES was WAY to steamy to view. @0956 it is still very steamy and hard to see into the middle of the pool. As far as i can tell it is calm and green in color. The feature that broke out last summer is appears hotter. The runoff channel is white again. (green earlier in the spring)
11712 10 Jun 2019 @ 1809 --- Polly Pool looks clear.
11386 27 May 2019 @ 0615 27 May 2019 @ 1500 Kyle clear and calm
11343 24 May 2019 @ 2039 --- Kyle clear, mostly calm with very light bubbling near SE edge
11307 22 May 2019 @ 0720 --- Kyle clear and calm
11321 21 May 2019 @ 0825 --- Kyle clear and calm
11323 20 May 2019 @ 0625 --- Kyle clear and calm.
11230 30 Apr 2019 @ 1110 --- Polly Emerald Spring is clear and calm with some overflow.
11087 26 Apr 2019 @ 1210 --- cb Emerald Spring is a BEAUTIFUL turquoise greenish color and calm.
11042 21 Apr 2019 @ 0730 21 Apr 2019 @ 1730 RMichaels Clear and calm every time I passed by during this time range.
10726 04 Nov 2018 @ 1034 --- MAB Beautiful and calm. Snow in the westerly channel. Spouter to the south still putting out water, but in the blizzard and so steamy no pulses or airborne water could be seen.
10686 29 Oct 2018 @ 1439 --- udo overflowing continuously. thing in trees next to it is quietly overflowing.
10625 19 Oct 2018 @ 1234 --- MAB Calm with tiniest of overflow on easterly channel, no water in W channel. Water is still being produced by New South Spouter but no splashes, pulses or otherwise moving water could be seen.
10603 13 Oct 2018 @ 0800 --- Suzanne clear, no boiling
10369 17 Sep 2018 @ 1240 --- Siegmund Slight overflow, very blue. Spot in woods along runoff channel steaming and overflowing but not erupting.
10212 15 Sep 2018 @ 1110 --- cb clear, calm and a beautiful turquoise blue color with patches of green on the rocks within the pool.
10187 13 Sep 2018 @ 1820 --- cb ES seems to be cycling between barely in overflow and barely below overflow.
10177 13 Sep 2018 @ 1150 --- cb Emerald Spring is just below overflow and the new breakout by the south thumb is overflowing down Emeralds overflow channel but barely erupting.
10172 12 Sep 2018 @ 1845 --- bbev Clear, calm and 1-2" below overflow. Bubbler overflowing down runoff.
10169 12 Sep 2018 @ 1227 --- bbev Clear, calm and overflowing.
10158 11 Sep 2018 @ 1357 --- udo Overflowing. South spritzer is i.e. and overflowing.
10140 10 Sep 2018 @ 1815 --- bbev At overflow, bubbler is putting water into runoff, but Emerald is not. Otherwise, clear and calm.
10129 10 Sep 2018 @ 0803 --- bbev Clear and overflowing, bubbler in trees still putting out water.
10116 08 Sep 2018 @ 0807 --- WillBoekel In overflow, clear, calm and blue/green in color
10107 07 Sep 2018 @ 1952 --- bbev Still clear, calm and overflowing. Slight bubbling and continued overflow from feature to SE.
10071 06 Sep 2018 @ 1830 --- cb Emerald has reached overflow and has changed color to a beautiful blue.
10066 06 Sep 2018 @ 1610 --- udo Emerald Spring is in overflow now. finally.
10026 04 Sep 2018 @ 1148 --- novakg Maybe 3 to 6 inches below overflow. Much better than Sunday. Newbr is breakout was producing a slight overflow.
10020 04 Sep 2018 @ 0849 --- cb Water levels in Emerald are slowly rising but still below overflow. New South break out is still putting out water AND there is a new steamy area in the trees closer to the boardwalk!
9997 03 Sep 2018 @ 0914 --- cb Emerald is up a bit, maybe 3". New thing to the south is only erupting to 2-3" and steamy.
9987 02 Sep 2018 @ 1157 --- novakg Down 6 to 8 inches. South bubbler 6 inches or so. It may be my imagination but I thought Emerald was up several inches by 1730.
9968 31 Aug 2018 @ 1914 --- udo About 3" below overflow. Bubbler is active to 6-10 inches creating runoff in near channel.
9954 30 Aug 2018 @ 1901 --- bbev Down 12" below overflow, feature to South still erupting continually to 1' and sending water down runoff.
9943 30 Aug 2018 @ 0747 --- cb calm and clear. pool is at the same level as last night > down 8+" from overflow. New breakout is still active and putting water down the runoff channel.
9932 29 Aug 2018 @ 1827 --- cb Still down 10 - 12" and is clear, calm and green
9922 29 Aug 2018 @ 0847 --- cb clear, calm, quiet and still way below overflow but up a bit from last night. New feature still erupting and overflowing into Emerald Spring runoff channel
9914 28 Aug 2018 @ 1845 --- cb Emerald Spring is down 8+" below overflow with a very slight convection around the South side (the thumb). The new break out is putting water down Emerald's run off channel BELOW Emeralds pool.
9918 28 Aug 2018 @ 1159 --- bbev Emerald Springs is still 3-4" below overflow and clear. Feature to the south is sill erupting 6-8" and putting water into Emerald's overflow. Runoff near Monarch remains same.
9889 26 Aug 2018 @ 0800 --- bbev Emerald Springs has dropped to 4-6" below overflow. Bubbler to the south continues to erupt 6-8" and put water in Emeralds runoff.
9877 25 Aug 2018 @ 0720 --- bbev Emerald Springs still below overflow, clear, bubbler continues 6-8" and to put water down runoff . Runoff between Monarch and Minute unchanged.
9861 24 Aug 2018 @ 1700 --- MAB Emerald down about 2", no overflow, and quiet. New Spouter to the south producing overflow down the Emerald east channel, the channel is about 50% wet from side to side.
9858 24 Aug 2018 @ 1309 --- bbev Emerald Springs is 3-4" below overflow (I did not notice if it was overflowing this morning as I was focused on the new bubbler). Bubbler is putting out a substantial amount of runoff, maybe equal to what Emerald had been, and is continuous, 6-12" high.
9853 24 Aug 2018 @ 0711 --- bbev Small bubbler to the south, just outside runoff, almost in the trees, erupting 6". Have not noticed this before.
9837 22 Aug 2018 @ 1901 --- cb Pool is barely in overflow. just a trickle down the overflow channel. it's clear, green and calm.
9716 13 Aug 2018 @ 1137 --- Kent Spring perfectly named, beautiful emerald green. Calm, no boiling at all. Outlet dry, no overflow.
9507 07 Aug 2018 @ 1105 --- Stephen_Gemar Calm, clear, and overflowing.
9458 03 Aug 2018 @ 2042 --- Stephen_Gemar Clear, very calm, and overflowing.
9438 03 Aug 2018 @ 0830 --- cb calm and clear
9396 02 Aug 2018 @ 0752 02 Aug 2018 @ 1736 udo Quietly overflowing. Same upon leaving at 1735.
9387 01 Aug 2018 @ 0931 --- MAB Beautiful, clear, calm - light convection visible near east ledge. Light overflow visible in easterly channel, none seen in westerly channel.
9250 20 Jul 2018 @ 0734 --- udo Quietly overflowing. Slight doming. No bubbling!
9135 11 Jul 2018 @ 1055 --- Tara Clear and calm with light convection in SE corner. Overflow from center channel only. Dark emerald green color.
9100 10 Jul 2018 @ 0850 --- udo Clear. Quietly overflowing. No bubbling!
8946 29 Jun 2018 @ 1745 --- cb Emerald Spring still turpid, fairly clear green and in overflow! Putting out more water than I've seen since the 18th. (*Note the weather!)
8836 21 Jun 2018 @ 1221 --- Polly A little bit murky, which is a sign of a disturbance in the basin.
8796 19 Jun 2018 @ 1725 --- cb a few more areas that are bubbling. pool color is still green and clear
8778 19 Jun 2018 @ 0700 --- cb Emerald Spring is still clear and green in color but continues to have a 4 vent boil in the Southeastern thumb of the pool + a small boil to the right.
8773 18 Jun 2018 @ 2050 --- Tara Several areas of boiling and blipping along southeast edge of pool, no increase in runoff.
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