Last Known Eruption
3d 17h 35m ago

Latest Eruptions

Eruption DurationInterval
16 Sep 2021 @ 13552h 27m
16 Sep 2021 @ 11282h 1m
16 Sep 2021 @ 0927 ie2d 22h 14m
13 Sep 2021 @ 1113 ie1d 17h 31m
11 Sep 2021 @ 17423m
11 Sep 2021 @ 17395m
11 Sep 2021 @ 17345m
11 Sep 2021 @ 17294m
11 Sep 2021 @ 17252h 12m
11 Sep 2021 @ 1513 ie3d 20h 23m
07 Sep 2021 @ 1849:1821s 3m
07 Sep 2021 @ 184630s 7m
07 Sep 2021 @ 183927s 2m
07 Sep 2021 @ 183723s 6m
07 Sep 2021 @ 183118s 3m
07 Sep 2021 @ 182832s 6m
07 Sep 2021 @ 182210s 2m
07 Sep 2021 @ 182018s 8m
07 Sep 2021 @ 181221s 6m
07 Sep 2021 @ 1805:5733s 6m 8s
07 Sep 2021 @ 1759:4928s 3m
07 Sep 2021 @ 175615s 2d 1h 26m
05 Sep 2021 @ 1630~15s 3m
05 Sep 2021 @ 1627~10s 14m
05 Sep 2021 @ 1613~25s 8m
05 Sep 2021 @ 1605~20s 7m
05 Sep 2021 @ 1558~12s 6m
05 Sep 2021 @ 1552~12-15s3m
05 Sep 2021 @ 1549~25s 12m
05 Sep 2021 @ 1537~8s 8m
05 Sep 2021 @ 1529~15s 14m
05 Sep 2021 @ 1515~25s 6m
05 Sep 2021 @ 1508:4415s 2m
05 Sep 2021 @ 150610s 4m
05 Sep 2021 @ 1501:5125s 6m 11s
05 Sep 2021 @ 1455:4016s 3m 34s
05 Sep 2021 @ 1452:0610s 5m 46s
05 Sep 2021 @ 1446:2022s 9m 5s
05 Sep 2021 @ 1437:15~10-15s6m 3s
05 Sep 2021 @ 1431:1225s 10m
05 Sep 2021 @ 1421~15-20s5m
05 Sep 2021 @ 1416~5s 17m
05 Sep 2021 @ 1359~12s 2m
05 Sep 2021 @ 1356:56~15s 15m 2s
05 Sep 2021 @ 1341:5435s 5m 15s
05 Sep 2021 @ 1336:39~5s 2m 54s
05 Sep 2021 @ 1333:4520s 6m
05 Sep 2021 @ 1327~12s 17h 37m
04 Sep 2021 @ 1950 ie19m
04 Sep 2021 @ 193128s 6m
04 Sep 2021 @ 192516s 11m
04 Sep 2021 @ 191422s 7m
04 Sep 2021 @ 1907~6s 7m
04 Sep 2021 @ 1900~10s 16m
04 Sep 2021 @ 1844~10s 1m
04 Sep 2021 @ 1843~18s 15m
04 Sep 2021 @ 1828~20s 7m
04 Sep 2021 @ 1821~10s 7m
04 Sep 2021 @ 1813:54~15s 5m
04 Sep 2021 @ 1808~10s 2m
04 Sep 2021 @ 1806~25s 9d 11h 39m
26 Aug 2021 @ 0627 ns wc16h 37m
25 Aug 2021 @ 13501d 21m
24 Aug 2021 @ 1329 ie2h 1m
24 Aug 2021 @ 1128 ie1d 23h 36m
22 Aug 2021 @ 115227m
22 Aug 2021 @ 112523m
22 Aug 2021 @ 11021d 31m
21 Aug 2021 @ 1031 ie18d 16h 15m
02 Aug 2021 @ 1816 ie23h 37m
01 Aug 2021 @ 1839 ie4d 5h 55m
28 Jul 2021 @ 124432m
28 Jul 2021 @ 12121d 23h 12m
26 Jul 2021 @ 1300 A7d 17h 43m
18 Jul 2021 @ 191716m 6d 7h 33m
12 Jul 2021 @ 11447d 1h 44m
05 Jul 2021 @ 1000 ie1d 15h 8m
03 Jul 2021 @ 1852 ie2d 4h 56m
01 Jul 2021 @ 135614m 23h 8m
30 Jun 2021 @ 1448 ie4h 20m
30 Jun 2021 @ 1028 ie23h 50m
29 Jun 2021 @ 10386d 2h 47m
23 Jun 2021 @ 0751 ie>15m 1d 23h 45m
21 Jun 2021 @ 0806 ie18m
21 Jun 2021 @ 0748 ie2h 1m
21 Jun 2021 @ 0547 ie2d 17h 39m
18 Jun 2021 @ 1208 ie4d 18h 14m
13 Jun 2021 @ 17541d 11h 3m
12 Jun 2021 @ 06512d 11h 19m
09 Jun 2021 @ 19321h 50m
09 Jun 2021 @ 1742 ie1m
09 Jun 2021 @ 174124m
09 Jun 2021 @ 1717 ie3m
09 Jun 2021 @ 1714 ie1m
09 Jun 2021 @ 17134m
09 Jun 2021 @ 1709 ie2m
09 Jun 2021 @ 170738m
09 Jun 2021 @ 1629 ie2m
09 Jun 2021 @ 1627 ie4m
09 Jun 2021 @ 16231h 38m

Interval Statistics

Interval Count100
Min1m
Max18d 16h 15m
Mean23h 45m
Median10m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
19621 16 Sep 2021 @ 0933 --- MAB NGB: NBK8 - little circular spouter to NE was IE w tan yellow water - NBK-8 water murky green
19483 11 Sep 2021 @ 1100 --- Graham Small round hole splashing in line between left side of Constant bench and large rocks on right side and behind Arsenic. Evidence of washed areas. When viewed from the boardwalk at the end of the Sunday Geyser straight, it's closest to the boardwalk and he way to Fireball. Round rim, maybe 1 foot across and slightly elevated with a rough pebble looking rim. Splashing is from a full pool from right side angled to the left. Splashes did not clear the pool. The runoff channel goes under the boardwalk at the bend close to Constant. Declined to just blooping from the right side during Fireball eruption. Resumed splashing when Fireball quit.
19586 05 Sep 2021 @ 1607 --- Dave W UNNG-BBG-6 "Green Bubbler" - steaming ~10s with 1 light splash
19585 05 Sep 2021 @ 1544 --- Dave W UNNG-BBG-6 "Green Bubbler" - steaming for ~10s with a single brief splash
19584 05 Sep 2021 @ 1444 --- Dave W UNNG-BBG-6 "Green Bubbler" - steaming for 5s with a brief splash
19582 05 Sep 2021 @ 1414 --- Dave W UNNG-BBG-6 "Green Bubbler" - heavy steam for 10s with 1 light splash
19581 05 Sep 2021 @ 1408 --- Dave W UNNG-BBG-6 "Green Bubbler" - steaming but no visible water
19497 04 Sep 2021 @ 1759 --- Dave W UNNG-BBG-6 "Green Bubbler" - steaming with two weak splashes
19221 01 Sep 2021 @ 1925 01 Sep 2021 @ 1935 Micah Kipple UNNG-GHG-15: the northernmost vent is bursting 6"-1'. I have not observed it splashing this vigorously for the whole summer. I also suspect this activity is new based on the fact that larger splashes are striking gravel on the edges of the crater and washing it into the pool. Where suspended debris was already present when I walked up.
19230 01 Sep 2021 @ 1624 --- MAB Norris: Sinks Trio - right lobe of the trio seen dry Aug 22 full - center lobe full - left lobe that was in high pressure steam now full and IE - Crescent shaped pool behind had small boil not the vigorous IE seen when left lobe was in high pressure steam
18993 22 Aug 2021 @ 1918 --- MAB Norris: Sinks Trio between Monarch and Minute in high pressure steam audible from Palpitator! Left lobe was the noisy steam vent - Right lobe completely dry- Center lobe IE - and the crescent pool behind the Trio was IE. Will try to find out when this change occurred
18945 15 Aug 2021 @ 1130 --- Tara North Round Spring. Water level down, several inches below bacteria ring from "normal" level. East Round Spring water level rose by about a foot. This change occurred sometime after 2015 on 8/14.
18938 14 Aug 2021 @ 1830 --- Tara North Round Spring. Water level way up, creating a pool 15-20' across, with tufts of green grass submerged. Light convection visible over vent. Water level was down in East Round Spring at this same time.
18843 05 Aug 2021 @ 1409 05 Aug 2021 @ 1503 Micah Kipple (see East Sentinel note for context) Between overflow cycles of East Sentinel, (about a 5 minute period) there is heavy gurgling and some steaming from Sentinel's side vents. But there is no evidence of eruptions recently, and no water was ever seen.
18808 02 Aug 2021 @ 1124 --- SantaFe108 Morning Mist Geyser: steaming quietly with dry runoff channel. Seen from Mary Mountain trail.
18654 25 Jul 2021 @ 0710 --- LynnS Arrive at Fountain Cimplex. PEANOt empty and quiet. Jet rumbling. Spasm empty and quiet. Jelly no water visible. Clepsydra active. Clepsydra’s side vent full. Thank
18244 02 Jul 2021 @ 0745 02 Jul 2021 @ 1115 Graham Primrose Spring full with periods of bubbling for 3.5h. One drop at 0856 when the rock ledge in the pool was exposed. Fissure Spring full all the time.
17451 04 Jun 2021 @ 1819 --- MAB NGB: Glacial Melt is nearly invisible with crumbled edges and no obvious pool - remaining yellow green water puddle is about 18in wide - Cats Eye active
17367 30 May 2021 @ 1400 --- cb NGB. Nuphar Lake WAY over-full and opalescent seafoam green color. A lot if water is flowing into the lake from Porcelain Terraces. Good thing the boardwalk is there as the Water is on both sides of the boardwalk
17239 28 May 2021 @ 1742 --- JSJ Unnamed geyser (UNNG) in the hook of the J-shaped pool between Young Hopeful Geyser & Gray Bulger Geyser. Located at 44º 32’ 38.36” North latitude, 110º 47’ 04.23” West longitude. Constant, low to moderately low doming-splashing.
17238 28 May 2021 @ 1639 --- JSJ UNNG-WCG-7 in the White Creek Group, Lower Geyser Basin. Basin has no visible water, as seen from pullout. Steaming.
17237 28 May 2021 @ 1633 --- JSJ Twin Butte Vista Spring - intermittent, low to moderately low splashing and occasional low spouting visible from road. Same behavior as in previous years.
17063 12 May 2021 @ 1722 --- Tara Round Spring-LGB. Full to rim.
17060 12 May 2021 @ 1600 --- Tara Round Spring-LGB. Water level down a few inches below rim.
17073 12 May 2021 @ 0935 --- MAB NGB Porcelain- Lava Pool Complex- the little round spouter that was perpetual Apr 28 now forced steam w only occasional spits of water
17039 09 May 2021 @ 1200 --- TheHikingDude The time is approximate. Dragons Mouth Spring at Mud Volcano suffered a small collapse today with the rocks blocking the flow of water. Photos in the Facebook page Yellowstone Up Close and Personal confirm it.
16946 28 Apr 2021 @ 0930 28 Apr 2021 @ 1830 MAB NGB - the little circular orangeish spouter in Lava Pool Complex nearest the berm that has a nifty vortex drain appears to be perpetual
16922 25 Apr 2021 @ 1927 --- DanS Round spring pool LGB - full overflowing and bubbling.
16921 25 Apr 2021 @ 1705 --- DanS Round Spring pool LGB -refilling, now only a couple inches below rim.
16920 25 Apr 2021 @ 1545 --- DanS Round Spring pool LGB - water level almost a foot below rim
16916 25 Apr 2021 @ 1120 --- DanS Round Spring (Pool) LGB - bubbling and overflowing.
16913 24 Apr 2021 @ 1730 --- DanS Round spring LGB - bubbling and overflowing.
16912 24 Apr 2021 @ 0950 --- DanS Round Spring LGB - bubbling and overflowing. Was down below rim almost a foot last evening.
16905 21 Apr 2021 @ 1500 21 Apr 2021 @ 1600 Micah Kipple OBSERVATIONS: Round Spring in the Thud Group is very hot, cyan blue in color, with energetic steam bubbles flaming at the bottom accompanied by lots of pops and rumbling. Overflow exits from either side of the spring (North and South) and heavy bacteria doesn't appear for several feet beyond the spring. I saw no wash or debris from a major eruption, and the activity and overflow appeared to be steady throughout my hour of observation. While there was no wash or debris, the high heat and vigorous flaming in the vent make me hesitate to rule out an eruption. The observations are thus inconclusive. INTERPRETATIONS/THOUGHTS: I trust my coworker on what he saw, he was very specific, and I could imagine that a small 2-3 foot bursting eruption from Round Spring could get away without leaving any evidence. So I think it erupted but it was either a singular event, or it is erupting on long intervals. Further study and observations are needed.
16904 21 Apr 2021 @ 1423 --- Micah Kipple My coworker Matt reported that he saw the spring (Round?) right next to the road in the Thud Group erupting 2-3 feet "Like a mini Sawmill" I am going to investigate and will report back with more details later.
16841 04 Feb 2021 @ 1503 --- Micah Kipple Crackling lake spring/geyser (whatever the feature is on the backside. Is completely off. No splashing seen
16840 04 Feb 2021 @ 1449 --- Micah Kipple The amount of water coming down from above Pinwheel has doubled since last week. Runoff is slightly cloudy now.
16430 15 Oct 2020 @ 1418 --- jonp Percolating Spring - WTGB. Continuous 1’ boil. Is it possible to add this feature to the GeyserTimes database? Thank you.
16050 06 Sep 2020 @ 0729 08 Sep 2020 @ 2129 underarockphoto Blue Mud Steam Vent was a steam vent until the snow storm, after which it was a perpetual spouter shooting mud 2-3ft.
16048 06 Sep 2020 @ 0727 08 Sep 2020 @ 2127 underarockphoto Root stayed at a static water level. Cloudy, light boil, and smelly. Tuesday included the occasional "bloop"
16046 06 Sep 2020 @ 0724 08 Sep 2020 @ 2124 underarockphoto Black Pit Spring, Norris Geyser Basin, next to Echinus. Frying pan all through Sunday into Monday afternoon. Wet boiling mudpot on Tuesday following the heavy rains.
15740 26 Aug 2020 @ 1703 --- Janet Jones Faint thumps heard in the East Chinaman Spring area.
15737 26 Aug 2020 @ 1331 --- Janet Jones GHG-15 (UTF on the path to Solitary on the right side as you head to Solitary) is much hotter and seems to be enlarging under the boardwalk. It seems rangers are monitoring the temperature. Looks REALLY hot. The UTF on the left side of the boardwalk has no microbes and occasionally sends up bubbles.When I went back for more documentation photos, at 1620, the side of GHG-15 (right) closest to Geyser Hill was softly roaring like a fumarole, but the left side of the large opening still had water in it and the vent closest to Solitary was splashing away.
15688 22 Aug 2020 @ 1129 --- User34 "Silver Globe Pool" Water came up above the white line and back side of pool surged to a few inches. Water level drops during Slit and slowly recovers during quiet period
15620 17 Aug 2020 @ 0828 --- CraigC water spit above the surface on feature about 30 feet to the north of three sisters spring
15585 15 Aug 2020 @ 1823 --- bbev opal spring in moderate overflow
15563 13 Aug 2020 @ 1301 --- JSJ North Angle Geyser & unnamed geyser 5.5 meters northwest of Vertical Geyser in the Sprinkler Group (Lower Geyser Basin) were still active today - same episodic eruptive activity as reported earlier in August 2020.
15470 09 Aug 2020 @ 1125 --- aferrara Around this time a large plume of steam rose ~northwest of me as viewed from the boardwalk near Clepsydra, a mile or more out, along or beyond Tangled Creek. A feature I could not identify had surges of water visible with he naked eye from the FPP boardwalk, apparently voluminous, but not extremely tall. It subsided <5m after I began observing, with visible steam continuing until I left the area. Unsure what this could have been.
15399 05 Aug 2020 @ 1200 --- JSJ Small, intermittent spitter west of Cauliflower Geyser (= just right of a sightline between Cauliflower & Island Geyser, as seen from the Artemisia Trail / Old Road). Possibly the feature seen on satellite imagery: 44° 29' 01.01" North latitude; 110° 51' 03.92" West longitude. Does this have a name? If so, I'm unaware of it.
15573 04 Aug 2020 @ 1147 04 Aug 2020 @ 1252 Tara Small mud geyser along south side of spur boardwalk at Thumb Paint Pots, West Thumb Geyser Basin. Janet Jones and I referred to it as "WT-Mud." Though larger eruptions had been reported by rangers, the eruptions we saw varied from bubbling to less than 1 foot to vigorous bursting up to 3 feet high. Intervals ranged from 2 to 5 minutes and durations were 10 to 15 seconds. We noted that if a large bubble failed to trigger an eruption, the actual eruption that followed would be more powerful. Here are the times I recorded: 1147, 1149:38, 1152:04, 1155:38, 1159:08, 1202:46 (break) 1232:50, 1236:03, 1239:56, 1241:06, 1243:08, 1247:38, 1252:42.
15377 04 Aug 2020 @ 1048 --- JSJ “South Sprinkler Geyser” - unnamed geyser (UNNG) located 11-12 meters due south of the Sprinkler Geyser complex (Sprinkler Group, Lower Geyser Basin); UNNG is apparently = vent 48 of Wolf & Paperiello, 1989 (Report on the Kaleidoscope & Sprinkler Groups); vent is at 44° 33’ 14.87” North latitude, 110° 48’ 39.63” West longitude. Active today, as usual (e.g., at 1048). Didn't try to get intervals. Same geyser as seen in: https://www.youtube.com/watch?v=SAFJ6HhPyZM
15354 03 Aug 2020 @ 1645 --- JSJ UNNG-WCG-7 in the White Creek Group (Lower Geyser Basin) - basin full and very lightly overflowing to the north; moderately light to moderate bubbling & roiling over vent area.
15353 03 Aug 2020 @ 1643 --- JSJ Twin Butte Vista Spring - visible low spouting from at least two closely-spaced sites/vents (seen from road). Activity continued for the ~1.75 hours under observation.
15656 03 Aug 2020 @ 1030 --- Tara Root Pool, Norris GB. With Steamboat i.e., Root Pool had murky brown water and was about 1.5" down from the high water level mark.
15146 01 Aug 2020 @ 1901 --- JSJ Perpetuals Pool of Butch Bach (Tangled Geysers Group, Lower Geyser Basin) - inactive.
15143 01 Aug 2020 @ 1827 --- JSJ "Chunk Geyser" / "Piston Geyser" (next to Spasmodic in the Sawmill Group) - standing water in center of basin; pinkish-purplish staining in much of basin.
14984 13 Jul 2020 @ 1429 13 Jul 2020 @ 1514 nails Viewed from bench at Constant. From the vantage point on bench the geyser is just beyond and to the right (upslope) of small trees growing on slope. Eruption is quick, thin bursting - hard to photograph due to short duration and distance away. Bursts/jets are at least twice the height of the nearby young trees on the slope. For multiple burst sets all the bursts occurred within a few seconds. 1429 2 bursts. 1438 5 bursts. 1453 1 burst. 1456 1 burst. 1500 1 burst. 1507 2 bursts. 1509 6 bursts. 1514 3 bursts. Hard for this observer to tell if these are distinct eruptions or just larger activity in a long duration event. Steam from feature waxed and waned, but would need binoculars to see if activity was continuous. Based on note from Mkeller on Saturday July 18, 2020 this feature is about 30 feet NW of Collapsed Cave geyser.
14503 01 Jun 2020 @ 1458 --- ypcaribou Puff N Stuff Geyser - Saw water spit about a foot above the cone multiple times.
14222 19 May 2020 @ 1340 --- Janet Jones There were much higher water levels in the Frog Pools area including Liberty Pool. All of them were overflowing beyond their respective vents.
14199 18 May 2020 @ 1439 --- Janet Jones "Nemo" (next to Anemone) has a new steaming hole near it - apparently created by bison as there are two smaller holes closer to the boardwalk that are about that size. And there's another hole in that area (also steaming) that was different before (half filled in or smaller? Need to check photos).
13449 29 Aug 2019 @ 0928 --- steve Grey Bulger is perpetual but is only erupting from one vent
13226 14 Aug 2019 @ 0807 --- dank South scalloped spring bubbles reaching over sinter from west edge of spring
13700 13 Aug 2019 @ 1337 --- JSJ Pair Geyser (= RCN database name) in the southwestern Kaleidoscope Group (Lower Geyser Basin); vent is located at 44° 33' 15.35" North latitude, 110° 48' 48.74" West longitude. Basin moderately to nearly water-filled today (!). Bluish water.
13398 13 Aug 2019 @ 1334 --- JSJ LKNN002 in the Kaleidoscope Group (= 12 meters southeast of Three Vent Geyser). Empty/dry/water out-of-sight, very unlike yesterday.
13211 12 Aug 2019 @ 1725 --- JSJ Pink Cone's side vent - two small separate spits at 1725. Plus grumbling in subsurface conduit.
13203 12 Aug 2019 @ 1040 12 Aug 2019 @ 1455 JSJ In the Sprinkler Group - LKNN019 and North Angle Geyser were active today, as usual.
13209 12 Aug 2019 @ 1250 --- JSJ LKNN002 - basin & pool due southeast of Three Vent Geyser (Kaleidoscope Group, Lower Geyser Basin). Yesterday, its pool was a deep blue color. Today, the entire surrounding basin/depression was usually water-filled and often formed a continuous pool with a water-covered Kaleidoscope Geyser platform (to the right of 002). A narrow neck of water usually occurred between the two.
13208 12 Aug 2019 @ 1052 --- JSJ Pair Geyser (= RCN database name) in the southwestern Kaleidoscope Group (Lower Geyser Basin); vent is located at 44° 33' 15.35" North latitude, 110° 48' 48.74" West longitude. Basin empty and lightly steaming in the late morning.
13184 11 Aug 2019 @ 1314 --- JSJ Pair Geyser (= RCN database name) in the southwestern Kaleidoscope Group (Lower Geyser Basin); vent is located at 44° 33' 15.35" North latitude, 110° 48' 48.74" West longitude. Basin empty & dry & not steaming all afternoon.
13179 11 Aug 2019 @ 1305 --- JSJ LKNN002 - basin & pool due southeast of Three Vent Geyser (Kaleidoscope Group, Lower Geyser Basin). Deep blue water ~filling basin - don't think I've ever seen this before.
13114 08 Aug 2019 @ 1405 --- JSJ Limekiln Springs - frequent visible low to very low splashing from the summit.
13057 05 Aug 2019 @ 1500 --- JSJ Unnamed geyser behind Gray Bulger Geyser. Cycling from off to 1-2 feet high eruptions, angled toward Firehole Lake. No discrete eruption starts: off to spitting to larger spitting, etc., to full eruption. See attachment.
13008 03 Aug 2019 @ 1311 --- JSJ Perpetuals Pool of Butch Bach (Tangled Geysers Group, Lower Geyser Basin) - off / inactive. No activity at all in the Tangled Group this afternoon, except for East Tangled (TGG-1). No blippers even.
12942 01 Aug 2019 @ 1321 --- JSJ Pair Geyser (= RCN database name) in the southwestern Kaleidoscope Group (Lower Geyser Basin); vent is located at 44° 33' 15.35" North latitude, 110° 48' 48.74" West longitude. No visible water; no steaming; basin appears dry.
12507 16 Jul 2019 @ 1050 --- Janet Jones Bluebell and Seismograph Pools at West Thumb Geyser Basin were below overflow, but with a wet area above the water line. Wondering if they're now cycling. Never saw them below overflow until this year.
11804 14 Jun 2019 @ 1343 --- JSJ A subaqueous vent is bubbling in the hook of the J-shaped pool (= far-western part of pool) in the Young Hopeful-Gray Bulger area.
11803 14 Jun 2019 @ 1337 --- JSJ Four vents just to the north-northwest of the J-shaped pool in the Young Hopeful-Gray Bulger area are variably active. The farthest vent (northernmost) has the most sizable & most energetic episodic eruptions of the four.
11800 14 Jun 2019 @ 1015 --- JSJ Spitter Spring active. Steam plume visible from Daisy Trail.
11713 10 Jun 2019 @ 1110 --- JSJ Salt-n-Pepper Geyser (Biscuit Basin, Upper Geyser Basin). In copious overflow. Only the northern vent is active, with intermittent, low to moderately low splashing.
11699 10 Jun 2019 @ 1040 10 Jun 2019 @ 1048 Micah Kipple Oakleaf Spring, Thud Group - near constant boiling and possibly small splashing from south side of crater. Visible barely from naked eye. Fairly easily observable with binoculars from pullout.
11694 09 Jun 2019 @ 0800 09 Jun 2019 @ 1600 JarnoO Several spikes show up on both loggers which line up almost perfectly from about 0800 till 1600. See attachments. Theorising it could be a feature somewhere between the Lakes and Porkchop which, while erupting, causes both the Lakes and Porkchop to rise in temperature (and, at the end of such an eruption, drop in temperature simultaniously). Wouldn't be surprised if it were to be the Lakes themselves.
11662 08 Jun 2019 @ 1216 --- JSJ UNNG-WCG-7 (White Creek Group, Lower Geyser Basin). Light intermittent bubbling from 4 sites in pool. Pool water-filled, but not full. No overflow.
11661 08 Jun 2019 @ 1213 --- JSJ Twin Butte Vista Spring (White Creek Group, Lower Geyser Basin). Intermittent low splashing visible from road.
11634 07 Jun 2019 @ 1007 --- JSJ Pair Geyser (= RCN database name) in the southwestern Kaleidoscope Group (Lower Geyser Basin); vent is located at 44° 33' 15.35" North latitude, 110° 48' 48.74" West longitude. No visible water in basin. Lightly steaming. No activity today.
11584 04 Jun 2019 @ 1300 04 Jun 2019 @ 1450 JSJ "Chunk Geyser" (a.k.a. "Piston Geyser") - small feature between Thumping Hole Geyser & Spasmodic Geyser (Sawmill Group). 1300 - basin water-filled. 1427 - water level low - just in the vent, fluctuating a bit, like a piston. 1450 - water level higher - basin about half-way filled, with very slight, barely noticeable fluctuations in the water surface.
11583 04 Jun 2019 @ 1258 04 Jun 2019 @ 1428 JSJ Old Tardy C Geyser in the Sawmill Group (vent is at 44° 27’ 57.57" North latitude, 110° 50' 11.59" West longitude), 20 feet east of Crystal Spring. 1258 - water level is over the central funnel, with constant bubbling/roiling, and a low-pitched buzzing. 1344 - water level is lower - in the central funnel, with moderately vigorous low splashing; same behavior at 1428. See attachment.
11558 03 Jun 2019 @ 0956 --- JSJ Pair Geyser (= RCN database name) in the southwestern Kaleidoscope Group (Lower Geyser Basin); vent is located at 44° 33' 15.35" North latitude, 110° 48' 48.74" West longitude. No visible water. No steam. No observed activity today.
11529 02 Jun 2019 @ 1144 --- JSJ "Son of Beach Geyser" (UNNG-GHG-7) & nearby "Orange Halo Spring" were both active today. Both were seen off & in eruption. Son of Beach Geyser's eruptions are more energetic than in previous years - frequent low to moderately low splashing today. Orange Halo Spring's eruptions are still small, ~slender spouts.
11381 27 May 2019 @ 1356 --- Micah Kipple Clepsydra's new vent is full of water, boiling, and pulsing.
11181 03 May 2019 @ 1545 --- Janet Jones Chain Lakes are empty - or nearly so.
10793 25 Dec 2018 @ 1648 --- Janet Jones Pygmy Geyser - Empty and acting as a fumarole. Stray thought - is this tied to Silver Spring’s activity? Silver was dead at this time.
10785 25 Dec 2018 @ 1057 --- Janet Jones The area sort of breaking out behind Spasmodic had one small vent splashing up no higher than an inch. Spasmodic was in overflow but the front vents weren’t active.
10783 25 Dec 2018 @ 1026 --- Janet Jones The Unnamed Thermal Feature next to Pot o’ Gold is showing a bit. The area is wet and has green microbes growing.
10780 25 Dec 2018 @ 0955 --- Janet Jones Pygmy Geyser full of water - spitting up an inch at most. Steaming vent has opened up to the right of it and a dry spot to the left of it. Photos and short video to come on my Instagram account. (yellowstonenaturalist)
10778 25 Dec 2018 @ 0941 --- Janet Jones Thumps at East Chinaman Spring
10731 09 Nov 2018 @ 0500 --- JarnoO It seems as if something near YVO's Gray Lakes Tributary Logger is erupting. Small spikes seem to be occurring about every 3 hours and cause a raise in the trace of less than a °C. Spike does look rather thin, so this would suggest an eruption of <= 2 minutes. Have looked through Norris' Back Basin map and table in The Geysers of Yellowstone, 5th edition, but couldn't really find a match in the southwestern portion of Back Basin.
10511 30 Sep 2018 @ 1540 --- MAB NGB = Blue Mud Steam Vent - Water level much higher than my last viewing - now easily visible, near the top of the crater opening at the embedded snag. Very Dark water with violent splashing. I forgot to look at Arrow on my way by.
10374 18 Sep 2018 @ 1530 --- Siegmund Exclamation Point: ~5cm below overflow, murky, no longer boiling.
10365 17 Sep 2018 @ 0845 --- Siegmund Carnegie Drill Site: Quiet, no boiling
10363 16 Sep 2018 @ 1340 --- Siegmund Exclamation point: heavy overflow, boiling. 3rd crater across Sawmill trail splashing muddy water onto the edge of the boardwalk, orange cone on trail.)
EntrySourceLinkComment
26 Jul 2021 @ 1300 underarockphoto https://imgur.com/a/tSVmCmX Photos.
26 Jun 2020 @ 1529 JarnoO https://www.youtube.com/watch?v=szkKMpSdmAk As seen from the webcam, by JoeN.
23 Jun 2020 @ 1507 JarnoO https://www.youtube.com/watch?v=_9iYC2VcbY0 As seen from the webcam.
17 Feb 2020 @ 0921 JarnoO https://www.youtube.com/watch?v=pSOSknVuLMo The video showing this feature in action. For this entry, see from 0:24-onward.
17 Feb 2020 @ 0920 JarnoO https://www.youtube.com/watch?v=pSOSknVuLMo The video showing this feature in action. For this entry, see the first 22 seconds.
05 Jun 2019 @ 1259 JSJ https://www.youtube.com/watch?v=X-Ia2PrZK3Y Clips 1-4 of this video compilation (= beginning to time stamp 3:04) show Singlet Geyser's 12:59 to 1:06 PM eruption on 5 June 2019. Clips 7-9 (time stamp 4:09 to 4:53) show the 2:51 to 2:56 PM eruption the same day.
14 Jun 2019 @ 0925 JSJ https://www.youtube.com/watch?v=UHXKBsoILN0 Video compilation of Broken Cone Geyser erupting in the mid-morning and early afternoon of 14 June 2019.
03 Jul 2016 @ 1906 JSJ https://www.youtube.com/watch?v=Ng419HYeFLs#t=0m58s Clips 2-3 of this video compilation (time stamp 0:58 to the end) show the way-southern Sprinkler Group UNNG's 7:06 to 7:07 PM eruption on 3 July 2016.
09 Jun 2016 @ 1647 JSJ https://www.youtube.com/watch?v=Ng419HYeFLs Clip 1 of this video compilation (beginning to time stamp 0:57) shows the way-southern Sprinkler Group UNNG's 4:47 to 4:48 PM eruption on 9 June 2016.
02 Aug 2018 @ 1547 JSJ https://www.youtube.com/watch?v=sLHI6Q7FdZU Video showing White Sand South Geyser's activity in the afternoon of 2 August 2018.
12 Aug 2018 @ 1448 JSJ https://www.youtube.com/watch?v=W2nY_3BwnLs Video compilation depicting Pair Geyser's three eruptions during the afternoon of 12 August 2018 - see caption below video for details.
04 Jun 2013 @ 1848 JSJ https://www.flickr.com/photos/jsjgeology/12282236644 Photo (out of 9) of the 6:48 to 6:51 PM eruption of an Angle Geyser complex feature on 4 June 2013.
07 Aug 2017 @ 1756 JSJ https://www.youtube.com/watch?v=LUucymh4BEE Video compilation of UNNG's eruptions during the late afternoon to early evening of 7 August 2017.
10 Aug 2017 @ 1259 JSJ https://www.youtube.com/watch?v=8vOn23Q1ZrY#t=13m54s Video compilation (time stamp 13:54 to the end) of Spinkler Geyser's afternoon eruptions on 10 August 2017.
06 Aug 2017 @ 1320 JSJ https://www.youtube.com/watch?v=8vOn23Q1ZrY#t=6m48s Video compilation (time stamp 6:48 to 13:54) of Spinkler Geyser's afternoon & early evening eruptions on 6 August 2017.
03 Jun 2017 @ 1237 JSJ https://www.youtube.com/watch?v=gKJsmHCmar8 Video compilation of UNNG's activity on 3 June 2017 and 11 June 2017 (the latter starts at time stamp 4:50).
07 Jun 2017 @ 1336 JSJ http://www.youtube.com/watch?v=EGDFCiquKrc Video compilation of UNNG-WSG-5's major eruptions during the afternoon of 7 June 2017.
05 Jun 2017 @ 1406 JSJ https://www.youtube.com/watch?v=goZXJxd2PbI Video of Dancing Geyser's 2:06 to 2:11 PM eruption on 5 June 2017.
09 Jun 2016 @ 1411 JSJ https://www.youtube.com/watch?v=VmleLGn8Bt0#t=1m26s Clip 2 of this video compilation (time stamp 1:26 to 2:06) shows Bridge Geyser's 3:58 to 3:59 PM eruption on 9 June 2016. Clips 3-5 (time stamp 2:07 to the end) show additional Bridge Geyser eruptions later that afternoon.
05 Jun 2016 @ 1735 JSJ https://www.youtube.com/watch?v=VmleLGn8Bt0 Clip 1 of this video compilation (beginning to time stamp 1:25) shows Bridge Geyser's 6:44 PM eruption on 5 June 2016.
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