Last Known Eruption
1d 15h 39m ago

Latest Eruptions

Eruption DurationInterval
16 Apr 2021 @ 1434 maj11d 15h 6m
04 Apr 2021 @ 2328 E maj8d 10h 27m
27 Mar 2021 @ 1301 E maj9d 9h 17m
18 Mar 2021 @ 0344 E maj14d 7h 44m
03 Mar 2021 @ 1900 A maj9d 23h 40m
21 Feb 2021 @ 1920 E maj18d 17h 19m
03 Feb 2021 @ 0201 E maj21d 17h 3m
12 Jan 2021 @ 0858 E maj9d 15h 58m
02 Jan 2021 @ 1700 ns maj13d 4h 46m
20 Dec 2020 @ 1214 E maj8d 15h 32m
11 Dec 2020 @ 2042 E maj12d 6h 5m
29 Nov 2020 @ 1437 E maj9d 4h 25m
20 Nov 2020 @ 1012 E maj9d 4h 7m
11 Nov 2020 @ 0605 E maj7d 16h 32m
03 Nov 2020 @ 1333 E maj7d 11h 51m
27 Oct 2020 @ 0242 E maj7d 4h 1m
19 Oct 2020 @ 2241 E maj5d 21h 30m
14 Oct 2020 @ 0111 maj8d 4h 6m
05 Oct 2020 @ 2105 maj23m 9d 10h 30m
26 Sep 2020 @ 1035 maj17m 9d 22h 51m
16 Sep 2020 @ 1144 maj1h 17m 6d 20h 44m
09 Sep 2020 @ 1500 maj13m 7d 18h 26m
01 Sep 2020 @ 2034 maj40m 6d 2h 58m
26 Aug 2020 @ 1736 maj24m 6d 14h 36m
20 Aug 2020 @ 0300 maj5d 11h 31m
14 Aug 2020 @ 1529 maj31m 4d 16h 23m
09 Aug 2020 @ 2306 maj6d 13h 9m
03 Aug 2020 @ 0957 maj36m 4d 8h 49m
30 Jul 2020 @ 0108 maj5d 12h 7m
24 Jul 2020 @ 1301 maj3m 5d 1h 20m
19 Jul 2020 @ 1141 maj33m 5d 15h 37m
13 Jul 2020 @ 2004 maj22m 4d 9h 17m
09 Jul 2020 @ 1047 maj43m 5d 20h 32m
03 Jul 2020 @ 1415 maj26m 4d 12h 46m
29 Jun 2020 @ 0129 maj5d 13h 47m
23 Jun 2020 @ 1142 maj14m 4d 18h 14m
18 Jun 2020 @ 1728 maj3m 5d 18h 48m
12 Jun 2020 @ 2240 E maj4d 5h 3m
08 Jun 2020 @ 1737 maj28m 5d 1h 45m
03 Jun 2020 @ 1552 maj26m 3d 9h 29m
31 May 2020 @ 0623 maj1h 0m 7d 15h 16m
23 May 2020 @ 1507 E maj3d 18h 56m
19 May 2020 @ 2011 E maj5d 15h 55m
14 May 2020 @ 0416 E maj6d 3h 11m
08 May 2020 @ 0105 E maj10d 8h 44m
27 Apr 2020 @ 1621 E maj16d 23h 34m
10 Apr 2020 @ 1647 E maj8d 13h 6m
02 Apr 2020 @ 0341 E maj8d 6h 24m
24 Mar 2020 @ 2117 E maj9d 1h 9m
15 Mar 2020 @ 2008 E maj9d 32m
06 Mar 2020 @ 1836 E maj6d 19h 4m
28 Feb 2020 @ 2332 E maj7d 21h 55m
21 Feb 2020 @ 0137 E maj8d 8h 14m
12 Feb 2020 @ 1723 E maj10d 20h 16m
01 Feb 2020 @ 2107 E maj9d 2h 42m
23 Jan 2020 @ 1825 E maj13d 22h 40m
09 Jan 2020 @ 1945 E maj13d 22h 11m
26 Dec 2019 @ 2134 E maj8d 5h 52m
18 Dec 2019 @ 1542 E maj9d 22h 49m
08 Dec 2019 @ 1653 E maj11d 16h 6m
27 Nov 2019 @ 0047 E maj9d 12h 18m
17 Nov 2019 @ 1229 maj17m 9d 8h 30m
08 Nov 2019 @ 0359 E maj8d 13h 6m
30 Oct 2019 @ 1553 maj8d 2h 37m
22 Oct 2019 @ 1316 E maj6d 9h 25m
16 Oct 2019 @ 0351 E maj8d 7h 6m
07 Oct 2019 @ 2045 maj6d 7h 52m
01 Oct 2019 @ 1253 maj49m 6d 6h 31m
25 Sep 2019 @ 0622 maj7d 6h 40m
17 Sep 2019 @ 2342 ns maj~21m 6d 2h 2m
11 Sep 2019 @ 2140 maj25m 8d 19h 6m
03 Sep 2019 @ 0234 maj23m 6d 15h 47m
27 Aug 2019 @ 1047 maj18m 6d 21h 56m
20 Aug 2019 @ 1251 maj15m 7d 14h 28m
12 Aug 2019 @ 2223 maj15m 13d 15h 3m
30 Jul 2019 @ 0720 maj6d 5h 28m
24 Jul 2019 @ 0152 maj5d 19h 40m
18 Jul 2019 @ 0612 maj17m 7d 11h 4m
10 Jul 2019 @ 1908 maj1h 29m 6d 17h 52m
04 Jul 2019 @ 0116 maj1h 16m 5d 1h 32m
28 Jun 2019 @ 2344 ns maj5d 10h 58m
23 Jun 2019 @ 1246 maj4d 10h 26m
19 Jun 2019 @ 0220 E maj3d 9h 40m
15 Jun 2019 @ 1640 ns maj3d 3h 48m
12 Jun 2019 @ 1252 maj5d 11h 39m
07 Jun 2019 @ 0113 ns maj5d 4h 26m
01 Jun 2019 @ 2047 majsee comments5d 3h 18m
27 May 2019 @ 1729 maj107d 2h 6m
20 May 2019 @ 1523 maj6d 19h 29m
13 May 2019 @ 1954 maj5d 11h 54m
08 May 2019 @ 0800 maj5d 5h 40m
03 May 2019 @ 0220 E maj7d 3h 55m
25 Apr 2019 @ 2225 E maj17d 1h 41m
08 Apr 2019 @ 2044 E maj14d 3h 7m
25 Mar 2019 @ 1737 E maj8d 2h 43m
17 Mar 2019 @ 1454 E maj6d 13h 0m
11 Mar 2019 @ 0154 E maj6d 1h 15m
04 Mar 2019 @ 2339 E maj7d 11h 57m
25 Feb 2019 @ 1142 E maj9d 10h 36m
16 Feb 2019 @ 0106 E maj7d 4h 21m

Interval Statistics

Interval Count100
Min3d 3h 48m
Max21d 17h 3m
Mean7d 23h 26m
Median7d 5h 30m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
16872 16 Apr 2021 @ 0750 16 Apr 2021 @ 1400 User34 lots of angled jetting from North, no vertical seen. South too steamy to see but frequent babbling brooks. Never seemed all too interested in erupting. Cistern at scalloped edge with a two-point boil.
16866 20 Mar 2021 @ 1345 --- JSJ The new Steamboat Geyser article is still behind a paywall. The United States Geological Survey has posted public domain images from the article that show the Steamboat & Cistern plumbing system geometries. See attachments.
16865 17 Mar 2021 @ 0900 --- RLJones The report of the University of Utah's 2018 study of Steamboat Geyser has been released. Goggle: "U scientists plumb the depths of the world's tallest geyser". They were able to track the fissures and channels down to about 450 feet. They appear to be planning to do a new and larger study in 2021. or later, to look deeper into the earth. It appears that the 2018 study did not go deep enough to find the reservoir(s).
16858 03 Mar 2021 @ 2100 --- Polly Spike on Tantalus that doesn’t appear to be weather related. YNM went down at 1800. YNR has possible faint increase in boldness but could have just been increased in sensitivity. Hopefully someone else can take a closer look at data. Tantalus update at 2135 - spike has a strong drop-off.
16852 13 Feb 2021 @ 1445 13 Feb 2021 @ 1509 Micah Kipple Very steamy. Observations limited. Semi-frequent voluminous angled minors to 30 feet from North Vent. Steam obscured visual observations of South but it was participating in some minors as evidenced from sound and exactly two instances of discharge down the runoff. One concerted minor lasted about 10 seconds and discharge was strong enough to push gravel down the channel.
16845 06 Feb 2021 @ 1415 06 Feb 2021 @ 1425 Micah Kipple Lightly steaming with no huffing. No evidence of flow down channel.
16843 04 Feb 2021 @ 1540 04 Feb 2021 @ 1550 Micah Kipple No water yet(?). Light huffing steam. Center of runoff channel about 2 feet wide is snow free.
16836 31 Jan 2021 @ 1645 --- markwolf no change to status quo in quick 15 minute visit
16834 28 Jan 2021 @ 1620 28 Jan 2021 @ 1640 Micah Kipple Frequent minors 10-40 feet from both vents. A significant amount of minors are concerted. I saw one vertical sustained ~5 second 30 foot minor from South Vent. There may have been more vertical activity but swirling steam and ongoing tour-guiding hindered my observations. There is OK runoff but not a huge amount. Overall: looks OK for in the middle of a disturbance.
16826 24 Jan 2021 @ 1529 --- markwolf consistent decent minors from NV. a few pretty voluminous. SV much more sporadic. steady but mild flow under the bridge
16811 17 Jan 2021 @ 1500 18 Jan 2021 @ 1200 JarnoO Water was first detectable by the logger around 1500 on January 17. Temperature rose as expected, but started to average out at 8°C by 1800. Still around 8°C by 1200 today.
16804 11 Jan 2021 @ 1310 11 Jan 2021 @ 1335 Micah Kipple Runoff completely clear. Frequent concerted minors to tree height with at least 3 considerable vertical minors sustained for 10-15 seconds each putting down a nice (but not massive) wave of runoff. A coworker of mine who came around ~0800 and has been at the upper platform since told me there has been a large increase in the size and volume of minor eruptions since then.
16800 05 Jan 2021 @ 1405 05 Jan 2021 @ 1415 Micah Kipple Light steaming with some weak huffs. The channel is mostly clear of snow but some higher projections have patches which indicate that it's not having significant minors yet. If anything.
16799 02 Jan 2021 @ 1530 --- ypcaribou Does not appear to have erupted as of 1530. Cistern roiling and full.
16798 01 Jan 2021 @ 1400 --- ypcaribou Not very active, a few minors...Cistern was full with slight overflow. (time approximate)
16794 27 Dec 2020 @ 1600 27 Dec 2020 @ 1605 Micah Kipple Large, period, voluminous puffs of steam seen from the overlook. I suspect that significant minors are occurring. Unfortunately I can't wait longer.
16790 24 Dec 2020 @ 1415 24 Dec 2020 @ 1434 Micah Kipple Lightly steaming with some weak huffs. I saw maybe one little spritz from North. Channel is still snow covered.
16788 23 Dec 2020 @ 1415 23 Dec 2020 @ 1425 Micah Kipple Light steam with occasional very weak huffs. No runoff. No water. Basically no sound. Very quiet. Cistern is up and overflowing with a 2 point light roil/boil.
16490 30 Oct 2020 @ 1235 --- steve Steamboat was just steaming for the short time I watched it. The runoff channel is dry.
16458 26 Oct 2020 @ 1218 --- markwolf better SV activity today, more runoff but little side trough by bridge still frozen
16453 25 Oct 2020 @ 1843 --- markwolf nothing too impressive during a short sunset visit to the frozen deck of steamboat. runoff channel still quite snowy and frozen on the edges, so i dont think they has much significant flow. notably, cistern is low, a few centimeters below the scalloped edges. I'm no cb or bbev but there's my best in-basin update. my fingers are still thawing out.
16421 14 Oct 2020 @ 1142 --- bbev Forceful steaming from both vent as we wave goodbye. Water running down far back channel, possibly from condensation from W wind. So long you FB, hope to see you next spring :( Evidence of lots of runoff on Echinus side of steerage and would guess a shorter duration. Cistern down 3', just to rim of inner tube.
16419 13 Oct 2020 @ 0700 13 Oct 2020 @ 1400 cb SB seems to have dramatically dis improved overnight. Play this morning was mostly angled jetting that occationally put a babbling brook down the SV runoff channel. There was some concerted play but water level was marginal at best.
16417 12 Oct 2020 @ 0815 12 Oct 2020 @ 1930 cb Some nice minors for day 6.5 in this interval. Good concerted, thick, tall, vertical NV's with nice SV raging rivers @ 1032, 1348 - 1415 & a really nice one at 1830.
16414 12 Oct 2020 @ 0759 12 Oct 2020 @ 0820 bbev 6D, 11 hrs PE: Another welcoming minor as l walked up at 0759. 0806 very nice CNVSVSHr. Russell reported nice concerted minors in the hour before l arrived. Cistern lower than 24 hours ago. Trough has accumulated a little more gravel. light, sporadic runoff at bridge. Yak-Tac conditions on boardwalk with another inch of snow last night. 0819 SB favorite trick, big concerted minor as l say l am leaving for last day of work.
16410 11 Oct 2020 @ 1905 --- cb 5D22H PE. Steamboat had some nice concerted minors this afternoon with good runoff and verticality. :) A really nice, thick, tall, concerted NV with SV fountaining that produced a raging river down the channel. Interesting! Cistern Spring Pool has dropped a little. Water is lapping at just below the scalloped edges of the pool. Overflowing out the established runoff channel to the south and a bit out the backside. Runoff channel toward Veteran is trickling into the catch basin but not any further.
16407 11 Oct 2020 @ 0802 11 Oct 2020 @ 0822 bbev 5D,11hrs PE: Walked up to nice concerted minor with verticality from NV. and very good runoff from SV. NV jetting to 25+' and SV 15-20'. 0808 another nice CNVSVSHr. Good rumbling from the FB! 2" of fresh snow to make first tracks down the boardwalk. Trough has accumulated some additional gravel and last night's rain has put water towards grassy knoll. Steady trickle at steerage.
16402 10 Oct 2020 @ 1248 --- cb water from SV minors has just reached the foot bridge at steerage. Water extends ~10' past the bridge. no trickle of water down the channel, it is just wet.
16384 10 Oct 2020 @ 0752 10 Oct 2020 @ 0808 bbev 4D, 11hrs PE; jetting from NV 10-20'. SV runoff is moist with occasional splashing out of the vent. No water at steerage or to dead forest. Trough clear of debris. Cistern is high with overflow creeping toward muddy pool and just filling catch basin to the West. One car in parking lot this morning!
16367 08 Oct 2020 @ 1025 --- bbev Quietly steaming.
16337 06 Oct 2020 @ 1018 06 Oct 2020 @ 1610 cb 13H 15M into the eruption. Both vents are still throwing water! NV 25' continuously. SV 10' with a steady stream of water flowing down the runoff channel. Cistern Spring is down ~1.5' below the inner tube rim. It is calm, steamy and blue! @ 1149 both vents are still throwing water! NV 35', SV 10+ and both continually. Cistern Spring is down 2' from rim of inner tube. @1251 SB had transitioned to billowy steam as viewed from Yellow Funnel and Orby. @1551 SB (19H into eruption)is rhythmically huffing billowy steam. Interestingly, SB's platform is dry and it looks like it's been coated in a layer of dried pottery clay. Especially Jabba. SV runoff channel looks like it's been painted with plaster of paris or a Porcelain paint! SO white! 19H - Cistern Spring is empty of all visable water.
16334 05 Oct 2020 @ 0815 05 Oct 2020 @ 1915 cb 9D9H PE. Not a lot of good activity today. 840 - 930 had some good SV with nice water flowing down the channel. (4) Other than that the only real stand up and shout event was at 1752 with a CNVVSVVH++. Would have pleased many on the platform if it had started but nope.... Not much followup after that. Cistern Spring is overflowing to the south and backside with a vigorous blooping boil.
16331 04 Oct 2020 @ 0800 05 Oct 2020 @ 0120 Ben VL Had a couple active periods with several strong minors throughout the day. 1030-1130 had a lot of nice activity as well as the 1700 hour. Occasional isolated strong minors between. I stayed after dark for a while and saw a couple more isolated strong minors. Nothing got me on my feet shouting today.
16324 03 Oct 2020 @ 0930 03 Oct 2020 @ 1930 cb 7D9H PE. some nice minors that were mostly angled. a few SV that ok river down the channel then we had 1 good CNVVSVH+ @ 1905 that put a good raging river down SV. Cistern spring is low again like last interval. Only overflowing out the established channel toward the south. It has a very vigorous blooping boil 3 - 5".
16321 03 Oct 2020 @ 0804 03 Oct 2020 @ 0819 bbev Both vents active. Light runoff at steerage. Past runoff has been enough for a trickle at the grassy knoll. Plenty of runoff in far southern channel below the bridge. Cistern somewhat low with scalloped edges exposed and muddy pool 3-4 " below overflow. Only overflow from Cistern is out the back channel towards tantalus.
16317 02 Oct 2020 @ 0930 --- cb 5D23H PE. Water is back in the system. Debris still scattered all in the SV runoff channel. Some light water on the back shoulder. No water anywhere near the grassy knoll. Cistern Spring is overflowing out the established runoff to the south, minimally out the back side and to the west.
16308 29 Sep 2020 @ 1835 29 Sep 2020 @ 1851 cb 3D 8H PE. Steamboat is huffing with an occational small spritz of water out of NV. Cistern Spring is barely overflowing on the south, west and backside. There is a trickle of water approaching the muddy pool. It's mainly overflowing out the established channel to the south. It has a mediocre boil.
16295 28 Sep 2020 @ 0834 28 Sep 2020 @ 0848 bbev 1D, 22hrs PE; Quietly steaming on cool 20° morning. Cistern also steamy. Can hear water and only able to see vigorous boiling by standing on middle rail in front of the spring.
16291 27 Sep 2020 @ 1605 --- cb 1D 5.5H PE. Steamboat is gently steaming and Cistern has completed drained. No sounds or steam on this chilly fall day!
16277 26 Sep 2020 @ 1655 --- cb 6H 20M in the eruption. SB is still roaring steam, no water and not as powerful as I've seen in the past at this time.
16253 25 Sep 2020 @ 0830 25 Sep 2020 @ 1745 cb 2 nice minors that could have lead to an eruption but NV just doesn't have the juice/umph/upsie to push through a good vertical minor to take it all the way to eruption. One at 1133 that put a solid 4.5 (5 is eruption)down the runoff at the footbridge and had many up on their feet shouting! Another at 1418 that could have been a start but just didn't have what it needed! Both had tall vertical SV that put a raging river down its runoff channel. Cistern Spring is still VERY low and overflowing only out of the established channel to the south. The scalloped edges and biscuits are WAY exposed. (1.5") Very chilly and windy day.
16247 24 Sep 2020 @ 0730 24 Sep 2020 @ 1900 cb A good concerted minor at 0808 this morning that put a raging river down SV. Some events during the day that were mediocre. Activity picked up at 1630 with tall vertical NV and good SV runoff. 1745 nice CNVVSVH++ and another around 1830 as I was getting ready to leave. Cistern Spring water level is very low. It is only overflowing from the established channels to the south and on the backside. Most of the platform is dry where is is normally wet with overflow. Scalloped edges and biscuits around the edge of the pool are exposed. hum....
16245 24 Sep 2020 @ 0700 24 Sep 2020 @ 1710 bbev Some improvement from yesterday. Concerted vertical with heavy runoff every 1-3 hours, but nothing following other than angled minors with weak runoff.
16234 22 Sep 2020 @ 0900 22 Sep 2020 @ 2000 cb SB had a few nice minors at 1144,1542 and a nice thick minor at 1829. Alot of concerted play again today with decent water levels as the day progressed.
16223 21 Sep 2020 @ 1715 --- cb 5D 5.5H. PE. SB SV runoff channel has water to Tantalus creek. Water has not reached the grassy knoll. Debris are still scattered all down SV channel. Frequent SV angled minors to 10'. NV angled and a few vertical bounces to 20'. A trickle of water down the back shoulder and the back runoff channel is damp. ~75% 0f the play is concerted.
16216 21 Sep 2020 @ 0843 21 Sep 2020 @ 0903 bbev 4D, 21hrs PE: very foggy this morning, SB grumbling, NV angled jetting to 20'. SV runoff damp. Can hear SV splashing with trickle coming down runoff. Trickle of runoff at bridge, with water making its way down middle channel below the bridge. Trough mostly clear of gravel, with some build up just under the bridge. Difficult to see, but l do not think there is any water on shoulder or back channel. Cistern just lapping at scalloped edges of pool.
16204 20 Sep 2020 @ 0944 20 Sep 2020 @ 1030 cb 3D 22H PE. Steamboat is lightly grumbling and steamy. SV runoff channel has a very thin area of dampness that extends about 10' from the vent. (most likely from rain last night) 1 NV splash during my observation. Nothing from SV.
16190 19 Sep 2020 @ 0915 --- cb 2D21.5H PE. Steamboat is gently steaming and the platform is bone dry. (observed before the rain has started) Cistern Spring is overflowing to the south, backside and into the muddy pool but not to the NW toward Veteran. (looks to be in early overflow.)
16140 15 Sep 2020 @ 1812 --- Graham At least 4 vertical surges between 0715 and 1945 with the strongest activity ~1400. Runoff has been fine. It just hasn't erupted yet.
16137 14 Sep 2020 @ 1941 --- Graham Several good pushes and vertical. North vent dominated. It has potential to erupt whenever it wants or not.
16124 14 Sep 2020 @ 0833 --- bbev 4D, 17.5hrs SV runoff a steady, light flow. Back shoulder and back runoff have water. Strong, tall, angled 25' NV when l arrived. SV active to 15-20'. Runoff at steerage is light and trough is unchanged from yesterday morning. Real smokey again today
16114 13 Sep 2020 @ 1730 --- cb 4D2.5H.PE. SV runoff channel is damp and still has lots of debris scattered in the channel. Back shoulder/channel, Jabba, ET are bone dry. SV runoff channel at the foot bridge is dry as far up the channel as I can see. Some angled, wispy 15' - 25' NV jets. Occational SV angled, 10' jets. Some concerted but not much water in either. Cistern Spring is the same as this morning.
16098 13 Sep 2020 @ 0831 13 Sep 2020 @ 0857 bbev 3D, 17.5hrs PE: Some splashing from NV. Trickle coming down SV channel, with very little splashing out of the vent. No water on back shoulder or back channel. Channel is dry at steerage and trough is mostly empty of gravel. Cistern overflowing into muddy pool and just covering scalloped edges. Smokey today!
16089 12 Sep 2020 @ 1700 --- cb 3D2H PE. No change since this mornings report.
16087 12 Sep 2020 @ 1130 --- cb 2D20.5H PE. SB is gently huffing. Entire platform bone dry. Did see 1 very small SV splash. Cistern Spring is in overflow on all sides with a moderate boil.
16051 11 Sep 2020 @ 0850 --- cb 1D17H PE. SB platform is dry. Cistern Spring is rising. Just starting to refill. water level still WAY down in the tube. Not visable because of steam and water depth so far down in the tube but I can hear the boil.
16024 08 Sep 2020 @ 0630 08 Sep 2020 @ 1950 Graham Nothing exciting again today or rwported last night. South Vent did improve and join in with North after around 1600. Nothing vertical though.
16025 08 Sep 2020 @ 0800 08 Sep 2020 @ 1930 cb NV seemed to dominate the day with nothing but angled jetting. No vertical play except for a very slight spray around 1700ish. SV was hard to view from any angle for most of the day due to the cold, snowy, steamy conditions that blew SB steam toward the platforms and down toward the foot bridge. SV play & runoff picked up around 1530 with some better runoff and loud percussive grumbling. NV continued its nearly constant play till I left at 1930.
16026 08 Sep 2020 @ 1200 08 Sep 2020 @ 1900 underarockphoto You know the Fan and Mortar notes “angle never quit”? North essentially didn’t stop for several hours. Nearly perpetual angled jetting that alternated between wispy and heavy. Pauses occasionally. One seasoned observer likened it to “wild phase” activity just bleeding energy off the system all day. Absolutely NO signs of a disturbance.
16023 08 Sep 2020 @ 1220 08 Sep 2020 @ 1515 bbev Very little water out of SV. NV was all angled and l saw no vertical from either vent. Someone said, "lt looks like it is stuck"!
16020 08 Sep 2020 @ 0945 08 Sep 2020 @ 1215 jkgood Didn’t observe anything truly attention grabbing all morning. Best wishes y’all!
16016 07 Sep 2020 @ 0600 07 Sep 2020 @ 1800 Graham No minors strong enough to get anyone excited. Left before dark due to the snow.
16011 07 Sep 2020 @ 1600 --- Kitt B No Steamboat as off 1600. Weather started deteriorating around 1500 switching from rain to sleet to snow with steam from the geyser heading either toward the main platform or toward the bridge. Viability was poor most of the afternoon. Saw continuous line of vehicles from Madison intersection to Fountain Flats due to a small herd near the road plus one lone bison in the canyon.
16014 07 Sep 2020 @ 0000 07 Sep 2020 @ 0630 underarockphoto Steamboat continued its activity over night. At 0047 and 0048 a large minor event got Ben and I’d attention. NV was vertical and sustained around 40’ with SV dumping enough water to move most gravel out of the runoff. This event repeated at 0114. Somewhere around 0420 while Hope Brooks and I were surveying baselines at Decker Island and Decker 2 another minor put enough water to cover the grassy knoll. At 0400 the wind shifted and I moved from the Upper platform to Steerage to avoid being clobbered by a surprise eruption. Runoff was a steady babbling brook from 0430 to around 0615 at which time it began slowly dropping to a trickle. The behavior pattern where SV would build in size and volume over the span of an hour, ending in a large concerted minor eruption (usually angled but sometimes vertical) happened four times with the ending minors happening at 0048, 0213, 0330, and 0430. By 0700 this pattern seemed largely gone. It was very easily noticeable from the upper platform by watching the steam in SVs runoff gradually increase in volume and length towards steerage. On a tangential note: the night sit was wonderful, warm and dry. The moon lit everything up, and some passing meteor shower produced large and slow fireballs once every ten to twenty minutes.
16015 06 Sep 2020 @ 0800 06 Sep 2020 @ 2359 underarockphoto At 0800 runoff at Steerage was barely a trickle and the runoff only went a few yards past the bridge. By 0900 the runoff had widened considerably and around 1100 there was finally a minor which fully wet the runoff channels and moved debris. NV rapidly began producing large minors with semi-frequent thick and vertical minors - but SV was no where to be found. SV slowly began increasing in volume throughout the day. A cycle developed where NV appeared to be in control, dragging SV along with it. This cycle ended abruptly around 1900 when SV apparently decided it was ready to play and there were three consecutive minors where SV was fountaining up to 35’ and North had repeated vertical surges. Ben and I moved to Decker after this to be in position to measure the starting surge just in case. For the next five hours minors were well defined and promising enough that we stayed well after dark. The cycle of NV pulling along SV ended after the minors of 1900 and it appeared SV was in control and dragging along NV with it in a cycle that progressed in definition over the next several hours. Minors that appeared capable of initiating an erupting occurred around 1900, 20:35, and 23:00. None had any follow ups. The observations in these comments are entirely my own and do not reflect the observations of all present obsevers. They are posted solely for historical documentation. Any use by the reader is solely at their own discretion and choice.
15996 06 Sep 2020 @ 0700 06 Sep 2020 @ 0715 SteveO Weak jetting from NV & SV. Runoff channel wet to 20' past the bridge, just a little trickle coming down.
15986 05 Sep 2020 @ 1914 --- cb 3D22h40M. PE. SV runoff is damp 30' down the channel from the vent. DAMP is the key word here. SV channel at the foot bridge is DRY! Back shoulder is dry as is the back channel, ET & Jabba. Some occasional minor splashing out of both vents. SV 5' wispy splash. NV Angled 10' - 15' wispy jet. Sounds very "airy" much like this time last interval. Cistern Spring is overflowing on all sides with a weak (flooded) boil.
16010 05 Sep 2020 @ 0904 05 Sep 2020 @ 1007 underarockphoto SUMMARY: Steamboat is slowly waking up with wispy angled North Vent jets to 20-40' and South to 6'. Minors are distinct with periods of quiet between them. Minors tend to begin with grumbling huffs. Water is slowly starting down the runoff channel. No signs of a disturbance. Original Notes 0904, Emerald, clear and calm 0907, NV, angled and wispy, 10ft 0913, NV, wispy and angled, 10ft 0914, Cistern, light boil overflow on all three sides 0916, NV wispy jets. Again at 0917, 0920 0918, Crater Spring, clear and calm 0919, Tantalus, clear and calm 0926, SV 2ft wisp 0929, NV angled to 20ft and SV to 3ft 0935, SV wisp 0940, water slowly going down runoff channel 0941, angled NV to 10ft 0947, NV vertical to 40ft no SV 0954, angled NV to 30ft SV to 4 1007, NV angled to 40ft SV to 8ft runoff 'front' pushed a foot.
15968 05 Sep 2020 @ 0850 --- bbev 3D 12hrs pe: SB quiet, only spritz jetting from NV seen once during brief observation. SV channel bone dry.
15961 04 Sep 2020 @ 1934 --- cb 2D23H PE. Steamboat is gently steaming. Entire platform is dry. Cistern Spring is overflowing on all sides.
15942 03 Sep 2020 @ 1805 --- cb 1D21.5H PE. Steamboat is gently steaming. Platform completely dry. Cistern Spring is filling and the water level ~1.5' below the inner tube rim. It has a 1 point blue-ping :) (blooping) boil!
16850 01 Sep 2020 @ 1000 01 Sep 2020 @ 2030 Tara Observations started at ~5d16h PE. After decent runoff between 1000-1100, activity weakened. There was a moderate push midday with good overflows (4 on steerage scale with debris wash) at 1330 and 1343 following NVV minors. After this, isolated NVV minors at 1428, 1623, and 1729 produced decent overflow (3-3.5 on steerage scale) but did not sustain. I left for the parking lot at 1910 and did not return until 2000, but nothing of note was reported by others during that time. Minors were weak from 2000 right up until 2033 when the eruption sequence started.
15926 31 Aug 2020 @ 1950 --- cb 5D2H15m PE. Steamboat has improved a bit from this morning. SV runoff channel has water flowing to the footbridge. The debris has moved ~10' down from the vent and is in small groupings directly across from the middle platform. Not enough strong minors to push them down to the trough yet. SV had a few 5' splashes and NV had some angled 25' jets, some that were "airy" and others that had more water in them but all in all the platform was not very impressive tonight. See what tomorrow brings!
15907 31 Aug 2020 @ 0916 --- cb 4D15H40m PE. SV runoff channel is wet but no water running down the channel and it still has lots of debris in it from the last eruption. The rain/snow had just started when I arrived. Looks like some overnight minors have dampened SV channel yet I didn't see much out of either vent in the 15 minutes I was there. SV had 1 small splash and one NV 10' angled, airy, mostly steamy jet.
15900 30 Aug 2020 @ 1721 30 Aug 2020 @ 1741 cb 4D PE. So...Platform and all vents, runoff channels, ET, Jabba are all bone dry! Some mild grumbling with an occational SV puffball, airy, 3' splash. Nothing out of NV but occational airy, wispy pushes of steam.
15896 30 Aug 2020 @ 1006 30 Aug 2020 @ 1040 cb 3D16.5H PE. SB is starting to grumble with occational huffs of steam. no water in either vent yet. Entire platform is dry. @ 1032 there was a small angled jet from NV & @ 1035 a concerted 15' angled jet from NV with 5' SV. Again @ 1038. Water is back into the system! Cistern Spring is overflowing on all sides with a vigorous boil. It is an opalescent turquoise blue color.
15799 29 Aug 2020 @ 1320 29 Aug 2020 @ 1436 cb 2D 21H PE. Platform and vents are dry. Cistern Spring is overflowing on the south end (toward Echinis) and over the blackside. Just BARELY a trickle over NW side (toward Veteran). Pool is clear blue in color with a moderate boil.
15764 28 Aug 2020 @ 1136 --- cb 1D18H PE. STEAMBOAT is gently steaming. Platform is dry. Cistern Spring is on the rise. water level is not visable yet, (~9' below the rim of the inner tube.) It is very steamy and has an audible roiling, vigorous boil that is putting up an impressive steam cloud.
15735 26 Aug 2020 @ 2112 --- hurleyintjl Left at 2045, no pauses or restarts observed
15728 25 Aug 2020 @ 2045 --- Tara NO Steamboat yet as of this time. Many isolated strong minors throughout the day, many folks left at 2030 as a storm moved into the Norris area.
15721 23 Aug 2020 @ 1700 23 Aug 2020 @ 1715 cb SB platform is still dry as a bone! Some very weak angled play from both vents. SV - 5', NV - 8'. No water in SV runoff channel at all. Cistern Spring is in overflow with a mediocre boil. 1815 walked by again and SV has 5' thin trail of water/dampness that is just starting to extend down from the vent. Back Shoulder, back channel, Jabba all bone dry.
15694 23 Aug 2020 @ 0623 23 Aug 2020 @ 0634 ypcaribou Two whispy, short, angled, random NV. Mostly just huffing. Vents just barely wet. channel bone dry. Cistern in overflow and a milky blue.
15683 22 Aug 2020 @ 1549 --- cb 2D13H PE. Platform is dry and SB is gently steaming. no water or sounds. Cistern Spring is in overflow with a weak boil
15674 21 Aug 2020 @ 2004 --- cb 1D17H PE. SB is gently huffing. Cistern spring is 6' below overflow
15660 20 Aug 2020 @ 1724 --- cb 14H 24M PE. SB is huffing steam from both vents. no water and platform is completely dry. Cistern Spring's pool is down ~1.5' from the rim of the inner tube. The pool is calm and a opalescent steel blue color.
15654 19 Aug 2020 @ 1000 19 Aug 2020 @ 2000 cb 5D5H PE. Water levels improved exponentially overnight and we had some nice minors with good runoff throughout the day. One minor that started just as a thunderstorm was passing us and it got many of us up on our feet coaching it to start but alas, it did not. Good minors after that but "no Steamboat yet".
15638 18 Aug 2020 @ 1000 18 Aug 2020 @ 1030 cb SB is just starting to get water into the platform. Only 1 CNVSV minor that had a small amount of water discharged @ 1024. SV runoff channel is damp ~30' down the channel as viewed from the middle deck. SV channel is bone dry at the foot bridge looking up the channel toward the vents. Back shoulder and back channels are bone dry. @ 1330 SV water had still not reached the foot bridge. @1712 SV runoff channel has a THIN trickle of water at foot bridge. At middle deck some CNVSV minors that put a wee bit of water down the channel but not enough to move the small rocks and debris at all. Back shoulder has a few thin, damp areas but not much and zero water in the back channel. **FYI the Norris basin, parking lot and road will be closed at 1800 tonight thru ~1000 tomorrow morning to move new exhibits into the museum. Please be considerate of this closure!
15630 17 Aug 2020 @ 1927 --- cb 3D 4H PE. Steamboats platform has not changed much since yesterday evening. Some wispy minor play from NV (one 5' angled jet) and 1 SV 2' spray. The whole platform is completely dry! Cistern Spring is overflowing in all directions with a vigorous boil
15617 17 Aug 2020 @ 0749 --- bbev 2D, 16hrs PE; Quiet and steaming on cool morning. Runoff channel bone dry, no water seen.
15612 16 Aug 2020 @ 1859 --- cb 2D3.5H PE. SB is quietly steaming. A faint gurgling sound from NV. No water in the platform yet. Cistern Spring is in overflow with average boil and it is a cloudy turquoise color. FYI, the no-see-ums and deer flies are out in force!
15594 16 Aug 2020 @ 0840 --- cb 1D17H PE. STEAMBOAT is gently steaming away. no water yet. platform dry. slight grumbling. Cistern Spring is refilling and the pool is ~1' below the inner tube rim. It has a vigorous boil.
15572 14 Aug 2020 @ 1945 --- ypcaribou 4h 15m PE (approx) - Steam cloud barely visible above ttees from Elk Park.
15500 10 Aug 2020 @ 1500 --- William 16h PE: Steadily billowing fluffy steam with occasional weak puffs out of NV. Some water still pooled in the runoff as viewed from middle deck. Cistern is 1.5-2' below the inner tube, with a bright blue color. Wind direction caused the area of boardwalk between Cistern and the bench before Steerage to be coated with .25" of pine needles and dirt. Muddy pool is particularly full with water.
15498 10 Aug 2020 @ 0800 --- KarlH 9 hrs post eruption, constant water erupting to 50-70 feet from NV, 20-30 feet from SV.
15468 09 Aug 2020 @ 0600 09 Aug 2020 @ 1230 jkgood Activity seems largely the same as yesterday so far. A single nice minor at ~11:30, and seemed to perk up a bit afterward, some good grumbles and pops. Had to head out hope it lights up for y’all!
15453 07 Aug 2020 @ 1200 07 Aug 2020 @ 2110 cb Steamboat was really lackluster this afternoon. SV had not moved the small piles of pepples down the SV channel that were from the previous eruption. Play from both vents improved around 1600. Taller more sustained jetting from both vents, a few were vertical, that produced some babbling brooks. Cistern Spring has a VIGOROUS boil and overflowing on all sides.
15456 07 Aug 2020 @ 0900 07 Aug 2020 @ 2000 KarlH Overall a quiet day at Steamboat. The quiet overflow previously reported was the rule of the day, with some activity picking up around 1400 and about every two hours after that. Between 1600 and 1700 there were some minors that started to move a little of the gravel at the top of the runoff channel, but even that remained when the Hoppes left around 2000. Best activity of the day to that point was the last hour, but vertical activity was essentially non existent today.
15422 07 Aug 2020 @ 0620 07 Aug 2020 @ 0740 Suzanne South Vent minors producing light runoff in the channel. Occasional angled thin splashing from North. Nothing voluminous yet.
15420 06 Aug 2020 @ 1500 06 Aug 2020 @ 1700 KarlH Runoff channels dry. I would describe minor activity as quite whispy.
15393 05 Aug 2020 @ 2003 --- cb 2D10H PE. SB platform is completely dry. Some gentle grumbling with some huffing. Cistern Spring is in overflow with a vigorous boil.
EntrySourceLinkComment
16 Apr 2021 @ 1434 JSJ https://www.flickr.com/photos/jsjgeology/51120592707 Tantalus Creek discharge graph showing Steamboat Geyser's 2:34 PM major eruption on 16 April 2021.
16 Apr 2021 @ 1434 JSJ https://www.flickr.com/photos/jsjgeology/51121072303/ Norris Museum seismogram showing Steamboat Geyser's 2:34 PM major eruption on 16 April 2021.
17 Sep 2018 @ 0936 Tara https://youtu.be/y_1L_dmc44Q Video of eruption by Tara Cross.
04 Apr 2021 @ 2328 JSJ https://www.flickr.com/photos/jsjgeology/51097635554 Tantalus Creek discharge graph showing Steamboat Geyser's late evening major eruption on 4 April 2021.
27 Mar 2021 @ 1301 JSJ https://www.flickr.com/photos/jsjgeology/51077319252 Tantalus Creek discharge graph showing Steamboat Geyser's 1:01 PM major eruption on 27 March 2021.
27 Mar 2021 @ 1301 JSJ https://www.flickr.com/photos/jsjgeology/51077319217 Norris Museum seismogram showing Steamboat Geyser's 1:01 PM major eruption on 27 March 2021.
18 Mar 2021 @ 0344 JSJ https://www.flickr.com/photos/jsjgeology/51049356231 Tantalus Creek discharge graph showing Steamboat Geyser's 3:44 AM major eruption on 18 March 2021.
18 Mar 2021 @ 0344 JSJ https://www.flickr.com/photos/jsjgeology/51049032096 Norris Museum seismogram showing Steamboat Geyser's 3:44 AM major eruption on 18 March 2021.
03 Mar 2021 @ 1900 JSJ https://www.flickr.com/photos/jsjgeology/51003290438 Tantalus Creek discharge graph showing Steamboat Geyser's evening eruption on 3 March 2021.
21 Feb 2021 @ 1920 JSJ https://www.flickr.com/photos/jsjgeology/50968474001 Norris Museum seismogram showing Steamboat Geyser's 7:20 PM major eruption on 21 February 2021.
26 Aug 2020 @ 1736 Tara https://youtu.be/Jlrgz79Njto Video showing August 26, 2020 major eruption from boardwalk near Yellow Funnel Spring.
03 Feb 2021 @ 0201 JSJ https://www.flickr.com/photos/jsjgeology/50903852023 Norris Museum seismogram showing Steamboat Geyser's 2:01 AM major eruption on 3 February 2021.
12 Jan 2021 @ 0858 JSJ https://www.flickr.com/photos/jsjgeology/50830027091 Tantalus Creek discharge graph showing Steamboat Geyser's 8:58 AM major eruption on 12 January 2021.
12 Jan 2021 @ 0858 JSJ https://www.flickr.com/photos/jsjgeology/50829236342 Norris Museum seismogram showing Steamboat Geyser's 8:58 AM major eruption on 12 January 2021.
02 Jan 2021 @ 1700 udo https://www.timeanddate.com/weather/usa/west-yellowstone/historic Source of nearest weather station data for west side of YELL.
20 Dec 2020 @ 1214 JSJ https://www.flickr.com/photos/jsjgeology/50742635341 Tantalus Creek discharge graph showing Steamboat Geyser's 12:14 PM major eruption on 20 December 2020.
20 Dec 2020 @ 1214 JSJ https://www.flickr.com/photos/jsjgeology/50742635316 Norris Museum seismogram showing Steamboat Geyser's 12:14 PM major eruption with restarts on 20 December 2020.
11 Dec 2020 @ 2042 JSJ https://www.flickr.com/photos/jsjgeology/50709526702 Tantalus Creek discharge graph showing Steamboat Geyser's 8:42 PM major eruption on 11 December 2020.
11 Dec 2020 @ 2042 JSJ https://www.flickr.com/photos/jsjgeology/50709442586 Norris Museum seismogram showing Steamboat Geyser's 8:42 PM major eruption on 11 December 2020.
29 Nov 2020 @ 1437 JSJ https://www.flickr.com/photos/jsjgeology/50663367711 Tantalus Creek discharge graph showing Steamboat Geyser's 2:37 PM major eruption on 29 November 2020.
Baseline does not exist.