Last Known Eruption
2d 4h 42m ago

Latest Eruptions

Eruption DurationInterval
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
08 Feb 2019 @ 2045 E maj7d 5h 23m
01 Feb 2019 @ 1522 ns maj7d 2h 50m
25 Jan 2019 @ 1232 E maj9d 5h 20m
16 Jan 2019 @ 0712 E maj11d 15h 10m
04 Jan 2019 @ 1602 E maj9d 16h 41m
25 Dec 2018 @ 2321 E maj8d 11h 21m
17 Dec 2018 @ 1159:49 E maj9d 10h 52m
08 Dec 2018 @ 0107 E maj9d 4h 30m
28 Nov 2018 @ 2037 E maj7d 1h 27m
21 Nov 2018 @ 1910 E maj6d 8h 6m
15 Nov 2018 @ 1104 E maj7d 18h 48m
07 Nov 2018 @ 1616 E maj7d 8h 55m
31 Oct 2018 @ 0821 maj7d 12h 52m
23 Oct 2018 @ 1929 maj~8d 5h 17m
15 Oct 2018 @ 1412 maj26m 7d 3h 47m
08 Oct 2018 @ 1025 maj7d 15h 31m
30 Sep 2018 @ 1854 maj6d 13h 36m
24 Sep 2018 @ 0518 maj~1h 0m 6d 19h 42m
17 Sep 2018 @ 0936 maj1h 15m 5d 5h 13m
12 Sep 2018 @ 0423 maj~55m 4d 18h 3m
07 Sep 2018 @ 1020 maj43m 8s 5d 10h 59m
01 Sep 2018 @ 2321 maj5d 2h 9m
27 Aug 2018 @ 2112 E maj5d 9h 29m
22 Aug 2018 @ 1143 maj14m 17d 21h 33m
04 Aug 2018 @ 1410 maj14d 15h 34m
20 Jul 2018 @ 2236 maj22m 14d 8h 59m
06 Jul 2018 @ 1337 maj32m 20d 20h 42m
15 Jun 2018 @ 1655 maj37m 4d 15h 49m
11 Jun 2018 @ 0106 maj6d 16h 2m
04 Jun 2018 @ 0904 maj30m 7d 13h 49m
27 May 2018 @ 1915 maj19m 7d 21h 27m
19 May 2018 @ 2148 maj6d 17h 57m
13 May 2018 @ 0351 E maj8d 4h 36m
04 May 2018 @ 2315 E maj7d 16h 45m
27 Apr 2018 @ 0630 E maj7d 14h 4m
19 Apr 2018 @ 1626 E maj35d 11h 5m
15 Mar 2018 @ 0521 E maj3y 193d 6h 38m
03 Sep 2014 @ 2243 E maj23m 1y 34d 3h 13m
31 Jul 2013 @ 1930 E maj6y 162d 2h 30m

Interval Statistics

Interval Count100
Min3d 3h 48m
Max6y 162d 2h 30m
Mean48d 12h 13m
Median7d 13h 20m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
14553 05 Jun 2020 @ 1954 05 Jun 2020 @ 2010 bbev 2D, 4hrs post eruption: Little if any change, 2 wispy jets from NV and 1 from SV. SV runoff is bone dry.
14549 05 Jun 2020 @ 0750 05 Jun 2020 @ 0855 bbev 1D, 16hrs post eruption: NV jetting wispy 10' every 5-12 min. SV only steam and no water from vent or in runoff.
14533 04 Jun 2020 @ 1130 --- cb Steamboat is quiet, gently steaming. No sounds or water from either vent. There is some pooling of water in small depressions in the South channel otherwise that run off is dry. A. trickle of water down the north channel. There are 2 more dead trees in the north channel just below the boardwalk. FYI the Norris area lost power yesterday afternoon and is still out as of the posting.
14518 03 Jun 2020 @ 0750 03 Jun 2020 @ 0757 ypcaribou Steamboat had a good, sustained push about 0854 that sent a rush down to Steerage. Bigger than a brook but not yet a river. Just prior and during, the steam columns for Cistern Spring, Tantalus Geyser, Echinus Geyser, and several features in the southwest Back Basin all quadrupled in height (estimate-they all got noticeably VERY tall). After the push, Steamboat quieted way down and the aforementioned steam columns all returned to "normal for a cool morning." Hmm.
14507 02 Jun 2020 @ 1720 02 Jun 2020 @ 1831 bbev Splash from SV at 1725, again at 1730 SV 5' splash. 1736 NV jet to 10'. Both vents continued, individually and occasionally concerted. Several splashes reached 10' At 1820, noticed that SV runoff begining to become damp and slowly creeping down the channel. Upper 10' of channel is wet.
14490 02 Jun 2020 @ 0810 02 Jun 2020 @ 0922 ypcaribou Huffing deep in vents on arrival. First audible water inside vents at 0814. First visible water jet at 0922. (I walked to Monarch & back in between so 0922 is just first burst I personally saw when I got back.) Vent area damp, including ET & Jabba. One bbev sighting around 0800 on the walk down.
14488 02 Jun 2020 @ 0727 02 Jun 2020 @ 0750 bbev 2D, 1 hr post eruption: some deep, soft grumbling and billowing steam. CS: pool is full and overflowing as expected with gentle boil. Heavy runoff to the NW, well into the trees. Also good runoff into muddy pool and channel to the south. 0747 some huffing from both vents. No water seen in brief observation.
14477 01 Jun 2020 @ 1815 --- cb Steamboat is quiet and gently steaming. All channels are dry. The trough or what i will now call the channel is full of small rocks and debris. The big boulder that WAS in the channel is no longer there and now is off to the west side of the bridge in the grass.
14499 01 Jun 2020 @ 1737 --- ypcaribou Quietly steaming. Dead & dying trees in an approximate 400 ft radius around SB. Including the one shade tree at the middle platform.
14457 30 May 2020 @ 0545 30 May 2020 @ 1930 Suzanne More improvement from yesterday. Strong minors observed at 0629, 0810 with followup at 0817, 0919, 1247, 1544, 1545, 1547, and 1842. The series starting at 1544 was very strong with North Vent granding. But in all cases the minors ended with South Vent taking off and killing North. Several raging rivers observed throughout the day, even during the times outside of the pushes.
14252 29 May 2020 @ 0545 29 May 2020 @ 1930 hkoenig Improved from yesterday by a bit. Small pushes at 08:40 and 09:34. Then we thought we were seeing a start at 13:28. Followed up by a smaller push at 14:28. Didn't really look very good until a couple of small pushes at 17:47 and 18:14. Did notice around 15:00 that the runoff from South Vent was turning white.
14250 29 May 2020 @ 0750 --- ypcaribou "No Steamboat yet but basin smelled very sulfery when drove by." (He means more than usual.) Time approximate; texted from Cygnet Lakes trailhead at 0800.
14249 28 May 2020 @ 0545 28 May 2020 @ 1920 Suzanne Slight improvement from yesterday. South Vent had occasional heavy minors producing babbling brook, but North Vent did not show much interest until 1903 when it had a decent vertical surge (30 ft) with a follow up about 1 minute later. But afterwards activity subsided.
14248 27 May 2020 @ 1759 --- Mkeller Between 0620-1700 no vertical play from North. A few sustained surges with both vents with good overflow but never any sense it wanted to erupt.
14245 26 May 2020 @ 1000 26 May 2020 @ 1300 Janet Jones Jens Day said Steamboat was very active from 1000 to 1300. At about 1300 it made a very strong attempt to erupt and then quieted down after that.
14214 19 May 2020 @ 1251 --- Janet Jones 1058 Almost woohoo - 1104 woohoo!! - 1107 Attempted woohoo - 1118 Cistern overflowing - 1120 at steerage water covering what was Elvis & a trickle down what now looks like waterfall canyon at the other bridge at steerage. Then it calmed so at Old Faithful area.
14192 16 May 2020 @ 1507 --- Janet Jones Gently steaming. Cistern spring appears to be full and overflowing as seen from a flight over the park. Photos will be posted to the FB group and to the Google group.
14129 21 Feb 2020 @ 0910 21 Feb 2020 @ 0920 Art Snow coach driver refused to allow us to go in basin despite pulling into Norris parking lot. From Norris parking lot, large steam column visible above fog but no audible sound. Entire valley heavily fogged in due to eruption so no view from overlook either.
14118 10 Feb 2020 @ 1300 10 Feb 2020 @ 1320 Micah Kipple Little to no overflow. Runoff channel filled with snow from the "dead forest" all the way to the bridge. North vent having some considerable angled minors. South vent having small angled minors and MAYBE one brief vertical splash. Overall. It looks worse than when I saw it a couple weeks ago.
14108 31 Jan 2020 @ 0955 31 Jan 2020 @ 1015 Micah Kipple Weak concerted activity from both vents with 2 vertical splashes seem from south vent and some bigger angled concerted play near the very end. No north vertical seen. Steady 1 runoff on the steerage scale. Trough is mostly filled with gravel and there are gravel bars near the vent and in the channel as viewed from lower deck which suggests no big minors yet. Trees continue to he killed further into the forest.
14103 24 Jan 2020 @ 1050 --- Graham 16h25m after the start. Steamboat Geyser in mixed steam and water phase. Cistern Spring water level dropping into inner tube.
14102 23 Jan 2020 @ 0443 --- underarockphoto Large spike to 53C and then a pronounced trough. https://imgur.com/5B5C7Ro
14101 22 Jan 2020 @ 1600 --- underarockphoto Large spike to 53C and then another trough https://imgur.com/5B5C7Ro
14100 21 Jan 2020 @ 2200 --- underarockphoto Large spike to 49C followed by a pronounced trough. https://imgur.com/5B5C7Ro
14088 21 Jan 2020 @ 1600 --- underarockphoto https://imgur.com/K3XiVJ5 Another large spike similar to a major eruption event, and similar to the events of 12 and 24hrs prior. This is put here in the context of reports (I do not have specific references at this moment) that SB had periods of exceptionally large minor eruptions in the 1980s and 1960s without erupting that dragged out its intervals as it regressed into dormancy. I leave these notes here in that (possible) context.
14087 21 Jan 2020 @ 0400 --- underarockphoto Another very large spike on the YVO chart, similar to the one 12 hours earlier, also as large as a major eruption spike. This is put here in the context of reports (I do not have specific references at this moment) that SB had periods of exceptionally large minor eruptions in the 1980s and 1960s without erupting that dragged out its intervals as it regressed into dormancy. I leave these notes here in that (possible) context. https://imgur.com/K3XiVJ5
14077 20 Jan 2020 @ 1415 --- underarockphoto YVO Logger registered a temp spike of over 60C. The spike is roughly the size of a full major eruption. This is put here in the context of reports (I do not have specific references at this moment) that SB had periods of exceptionally large minor eruptions in the 1980s and 1960s without erupting that dragged out its intervals as it regressed into dormancy. I leave these notes here in that (possible) context. 7d logger: https://imgur.com/Eqgoh6C 1d logger: https://imgur.com/yRmkZkT 1mo logger: https://imgur.com/45eyWu7
14067 19 Jan 2020 @ 1000 19 Jan 2020 @ 1030 ypcaribou Roy told Bob who told me: 50 ft minors from N vent around this time of day.
14062 06 Jan 2020 @ 1200 --- ypcaribou Observed while on tour (exact time not known). When asked if there were "Tall minors? Concerted from both vents?" His response was "Yup." Hey, I'll take that over no observation at all.
14059 31 Dec 2019 @ 1100 31 Dec 2019 @ 1230 ypcaribou One good minor burst to 15 ft (vent not identified) otherwise mediocre. Cistern in "slight overflow" (was not flowing into muddy pool). Reported to Bob Cash who told me. Time is approximate - was mid day.
14055 24 Dec 2019 @ 0300 25 Dec 2019 @ 0030 underarockphoto Water probably returned somewhere in this range. Steamboat has been enjoying making ice dams on the logger probe. Water was definiftely back by 00:30 on 12/25 but could have been as early as 0300 12/24 with the initial trickles forming an ice dam on the probe. YVO logger data: https://imgur.com/a/wpaj5C4
14035 16 Dec 2019 @ 1430 --- ypcaribou Minors of 10 to 15 feet
14036 16 Dec 2019 @ 1100 16 Dec 2019 @ 1120 Micah Kipple In my brief time there with the Frolic Tour, I saw plenty of average sized angled minors, most non-concerted although there was one concerted minor that resulted in a few vertical shots from north that never got very high. And then south sustained vertical, again, with little height, a little later. I wasn't very impressed for day 7, based on my limited experience.
14056 13 Dec 2019 @ 1200 14 Dec 2019 @ 1200 underarockphoto Water possibly returned back to steaboat during this time. Its been making ice dams on the logger probes. This one formed around 12:00 on 12/13 and melted from overflow on 12/14 around 12:00. YVO logger data: https://imgur.com/Re5cbWU
14016 16 Nov 2019 @ 1615 --- Mkeller A couple of series of good minors at 0945 and 1330 but not much vertical play from North Vent otherwise between 0900 and 1615.
14000 03 Nov 2019 @ 0849 --- MAB 26 degrees warmer than my last visit but still steamy - light north vent spritz heard
13989 30 Oct 2019 @ 1100 30 Oct 2019 @ 1300 steve SB was not very active. Byron said there was one good event at about 1000. Still not much run off but it is getting better. I had cell service for a while yesterday in the Norris parking lot. More dual vent activity today.
13986 29 Oct 2019 @ 1111 29 Oct 2019 @ 1705 udo Pathetically poor pushes, hardly any runoff, none in SV's back channel. Due to wind direction we could not tell if the few concerted minors had anything resembling vertical. SV splash zone above the steam vent (the one that sloshes water during eruptions) was still snow covered until ~1530.
13988 29 Oct 2019 @ 1500 29 Oct 2019 @ 1700 steve Not much from Steamboat. Most of the splashing was North vent and was angled. Weak run off all day. No Woo-hoo moments. Judging from the run off by the bridge and the snow/ice on the sides the Micah score was usually 1, some but not much 2, and maybe one weak 3. Maybe tomorrow.
13987 29 Oct 2019 @ 1100 29 Oct 2019 @ 1300 steve At Steamboat it have been mostly north vent and only rarely vertical. No Woo Hoos. The run off has been light. Nearly all Micah scale 1. Wind chill in the negative.
13984 28 Oct 2019 @ 1730 28 Oct 2019 @ 1745 MAB in 15m saw angled NVs then concerted play w NV heavy and slightly vertical. Another as I was leaving. These produced audible runoff - briefly.
13974 25 Oct 2019 @ 1640 --- MAB visitors told me they saw small splashes at 1640. Very quiet at 1810 when I stopped just long enough to note the visitor comment
13956 18 Oct 2019 @ 1338 --- CraigC two small jets from north vent
13950 16 Oct 2019 @ 0434 16 Oct 2019 @ 0930 Ben VL Did not see a steam plume from elk park driving in - geyser fog must have been thicker than it looked. Plume looked a little larger than normal from PL, didn't figure out it was IE until I rolled down my window. Left the car at 0434. In front of platform at 0437, to Steamboat in strong steam phase. Decent flow down both NV and SV channel still. LOTS of debris on the steerage bridge, stretching longer than the railing and including several fist sized rocks! Everything SB was raining on was freezing over. BW's extremely slick. Winter wonderland of frozen trees around the upper deck and dead tree zone after sunrise. 0520 NV started sounding more sputtery and started gaining a lot more water content. SV steam started to die down. It got really wispy and started looking like it might eventually just drop out. 0530 wind shifted and SB resumed steamphase. Bummer - we were getting curious to see where that was going to go. C&B left and a little but after that the wind shifted and we started getting restarts. The restarts were not very tall (the highest ones probably topped out at around 50'-60') and the pauses were short. NV would pause, SV would go to roaring steam and die down almost all the way, then NV and SV would pick up at close to the same time. No SV double-clutching observed this time, and the water never turned dirty. Pauses noted at 0640, 42, 45, 48, & 50. Partial/near restarts noted at 0655, 56, 0703, 05, 10, & 13, where NV would start to die down, SV would go to roaring steam, and NV would start to pause, but not quite stop before taking off again. More full restarts at 0715, & 18. More partial restarts at 0723, & 24. 0805 full restart. 0806, 07, 11, 12 partial restarts. At 0812, & 14, there were a kind of cross between the partial and full restarts where NV would stop but only for a split second before restarting, not giving SV a chance to die down. Wind changed again after that and the restart action was over. Steamphase roar still quietly audible from the parking lot. Eventually it started to sound sputtery again. Possible restart events noted from the parking lot at 0859, 0903 and probably a few other times as well.
13947 16 Oct 2019 @ 0430 --- bbev Thanks for not waking us up, and thanks for another great year. Have a great winter and hope to see you in the spring! Bye for now buddy. 0520 NV getting some water back and sv to light steam. 0530 wind change and one last shower for the road. Thanks to all who voiced their appreciation for all the time we (mostly Carol) shared from the basin.
13945 15 Oct 2019 @ 0730 15 Oct 2019 @ 1853 bbev 7D, 11hrs; First NV vertical seen at 1341. Activity improved with several good vertical minors with 3-4 runoff later in afternoon.
13943 14 Oct 2019 @ 0730 14 Oct 2019 @ 1515 bbev 6D, 11hrs: Activity very much dis improved from yesterday. Some minor play but no good runoff from SV. Have to assume that this mornings spike on graph was false start, causing delay.
13949 13 Oct 2019 @ 1900 14 Oct 2019 @ 0130 Ben VL Kind of lousy play. Based on reports of activity around 1800, thought we would get something around 2100ish. Never came. Decided to cut it at midnight. Sure enough, a minor convinced me to stay an extra 10 minutes. An active period started at 0004 which contained bounce at 0010, and a Woo at 0029. That's it. Left at 0130.
13938 13 Oct 2019 @ 0930 13 Oct 2019 @ 1830 bbev 5D, 13 hrs: Very steamy. 1006 CNVSH runoff @3, 1056 CSNVSH from mid deck, good runoff with follow up at 1058. 1111 NV V 1152 CSNVSH, 3 runoff. 1310 CSNVSH 3 runoff. 1325 CSNVSH from mid deck. 1326 good follow up with runoff. 1620 CSNVSH 3r 1710 CSNVSH 3r, 1755 CSNVSH solid 4r, 1757 follow up with 3+r
13924 12 Oct 2019 @ 1200 12 Oct 2019 @ 1551 bbev 4D, 15hrs: Nice activity on day four. NV tall and voluminous with some concerted play, steady, light runoff from SV. 1242 NV vertical, 1305: Concerted, Sustained, North Vertical, South Heavy runoff 3- runoff (per T scale). Some follow up at 1307, little runoff. 1323 nvv. 1339 CSNVSH solid3 runoff. 1353 CSNVSH 3 runoff. 1431 SV solo 2+ runoff. 1530 Sust.SV solo 3- runoff. 1533 CSNVSH 3- runoff. 1540 CSNVSH 3- runoff
13922 11 Oct 2019 @ 1300 --- underarockphoto Steady trickle down South Vent Runoff Channel. One minor at 13:05 that was sustained for about 15 seconds, north and south both angled to 20-30ft with very very small amounts of vertical (ET briefly gone by both vents) with a babbling brook down the SVRC. All other minors weren’t worth noting. North routinely was angled to 20-30ft. South sometimes showed itself. NOTE: Ice in the trough at base of SVRC. Logger is probably still iced over despite runoff.
13914 10 Oct 2019 @ 1530 --- underarockphoto Steaming. Saw one angled spritz from N vent to 10’. South Vent Runoff Channel is frozen over. If there’s any water in it it’s not visible. Saw no water from South Vent.
13895 06 Oct 2019 @ 1545 06 Oct 2019 @ 1915 underarockphoto Saw two decent minors. One at 17:10 was concerted and vertical from both vents. Runoff at Steerage was a 3. One at 18:54 got all of us standing with a solid pi (3.14159...) on the runoff scale (Udo and I debated 3 or 4). The minor itself was large, with North at 40-50ft, South at 30-40ft and thick columns. Neither minors had any real follow ups. The rest of the period was basically garbage. Nice steady runoff at Steerage but nothing to really write home about. Norris closed at 19:15 for construction. Theoretically it’s only for two days. Fingers crossed that SB false starts itself through construction.
13886 05 Oct 2019 @ 1123 --- cb 3D 22H PE. Water has returned to the system. SV runoff channel has a trickle of flowing water at steerage. NV angled jetting 10 - 15'. SV angled 8 - 10'. Some concerted. Bubblers in the NV runoff channel in front of the lower platform are active. Cistern Spring is high and overflowing in 3 directions with a vigorous 2 point boil.
13874 04 Oct 2019 @ 1647 --- cb 3D 3H PE. Steamboat is gently steaming. No water from either vent observed but the NV splash zone is damp. I can hear a very slight grumble. All channels dry dry DRY! Jabba and back shoulder are dry.
13870 04 Oct 2019 @ 1300 --- underarockphoto 3D 0H. Water finally returning. Saw one spritz from North Vent. Nothing from South. No water in SV channel. Logger shows no water. Cistern is blue, clear, and overflowing with a light boil. Emerald is overflowing and clear.
13863 04 Oct 2019 @ 0755 --- bbev 2D, 19hrs: Steamy and dry. Cistern is an opalescent pool, overflowing with light boil heard, very steamy.
13868 03 Oct 2019 @ 1400 --- cb 2D 1H PE Steamboat is gently huffing steam. channels are mostly dry except a few shallow depressions that have rain water pooling. Boardwalks are SLICK with slushy snow. Tomorrow it will be a ice rink!
13852 03 Oct 2019 @ 0757 --- bbev 1D, 19hrs: Quietly steaming. NV runoff bubblers directly in front of lower deck, active in standing pool. Splashes deep in crater just visible from in front of Cistern. Plenty of steam on 13°F morning. Water in trough frozen.
13846 02 Oct 2019 @ 0757 --- bbev 19hrs: 3-4" of new snow on boardwalk. Beautiful walk making first tracks to the geyser! Best time of day with no one here. Steamboat quietly steaming, no water. NV huffing softly. Cistern completely drained, no sight or sound of any form of H2O.
13843 30 Sep 2019 @ 1140 30 Sep 2019 @ 1858 Ben VL Arrived to poor looking activity, which turned suddenly to a small active period from 1150-1250 with a few brief NV verticals inside angled minors. Woo-Hoo at 1407, with a few slightly smaller vertical minors to follow it up. Down at steerage, had minors at 1740, 46, & 50 that produced at least a level 4 runoff, with the one at 1746 probably reaching a level 5. That one looked to be at least a Woo-Hoo from steerage. Runoff between active periods dropped pretty low, but energy seemed to recover pretty quickly after the end of each active period. Active periods also seemed to be pretty well defined throughout the day.
13836 30 Sep 2019 @ 1600 30 Sep 2019 @ 1650 Kitt B During our brief 50 minute observation, SteveO and I saw some nice minors, but no vertical in North. Ben said there were a couple of woohoos CSNJSJ minors at approximately 1400. The boardwalk had about 1 -2 inches of snow on it with some ice.
13842 29 Sep 2019 @ 0930 --- Ben VL 4D 3H in. Minors occurring with long pauses in between. A couple concerted ones, a couple mildly sustained ones. Decent volume by this point in the interval. No V seen. NV max. 25', SV max. 15'. Slight trickle at steerage. Runoff channel no longer super white.
13828 28 Sep 2019 @ 1748 --- JarnoO The first Steamboat minor recorded by the logger since its previous eruption showed up @ 1748:52 MDT, spiking to 5.5°C, from 3.4°C. Next obvious spike did not occur until 1850:52 MDT, this time it spiked from 3.1°C to 14.6°C.
13815 27 Sep 2019 @ 1152 --- SteveO 2D, 5.5hrs post Steamboat: Steamboat lightly huffing steam, channels are dry. Cistern Spring 12-16" below overflow. Clear and moderately boiling pool.
13811 27 Sep 2019 @ 0752 --- bbev 2D, 1.5hrs: Quiet and dry. Cistern 26-30" below overflow. Clear, moderately boiling pool.
13804 26 Sep 2019 @ 1420 --- cb 1D8H PE. 54° and windy. SB is quiet and all channels dry. Cistern Spring has no visible water that i can see but it does have steam coming up from down deep. No gurgling sounds. The stick in the trough was dislodged during yesterdays eruption and the tip of it is now above water.
13799 25 Sep 2019 @ 0745 --- ypcaribou Bob Cash saw steam column from Elk Park about 0745. Work truck windshield got lightly Steamboated from road on his way by.
13797 24 Sep 2019 @ 1700 24 Sep 2019 @ 2115 William More of the same lulling activity. Slight uptick in energy and runoff around 20:45 with no hint at follow up.
13787 24 Sep 2019 @ 0700 24 Sep 2019 @ 1700 cb Not much interesting happened today. No minors that were worthy of noting in my book. Just very random splashy activity. Some consistent runoff at steerage but it never made it above a 3 on the runoff scale. Cistern Spring on the other hand was interesting! VIGOROUSLY boiling and blooping to - 6" in 2 places. The boil is sending out large waves which by late afternoon dropped the pool level so that overflow was only only in the 3 established runoff channels and being push out the stong waves
13840 23 Sep 2019 @ 2000 --- Ben VL SB unattended around this time. No real push by the time we left. Seemed to be dis-improving throughout the day after the 1240-1400 activity.
13784 23 Sep 2019 @ 0715 23 Sep 2019 @ 1420 Tara Kitt reported large sustained minors with tall SV at 0719 & 0722. After that mostly quiet with very little vertical until 1240. 1256 nice NV vertical, then 1257 tall sustained NV & SV vertical with heavy flow. After a short quiet period there was occasional NV vertical until about 1345, with 2 more stronger minors called on the radio. No further calls as of 1420.
13779 22 Sep 2019 @ 1020 --- cb brief visit to check things out. Ben VL was there. said he saw a nice minor that he thought had some V in it at 9ish. (a woo hoo?) I saw a reverse bounce from NV AT 1030. Constant trickle at steerage.
13773 21 Sep 2019 @ 0840 21 Sep 2019 @ 0905 Ben VL Water has returned to the system. There is a steady trickle of water at steerage. Almost all minors are followed by a pause. NV max 25', SV 10-15'. Most minors were brief, no vertical seen. Some of them had some nice volume to them. Cistern overflowing in multiple directions.
13771 20 Sep 2019 @ 1555 20 Sep 2019 @ 1620 cb During this 20m observation period I did not see any splashes from either vent. Just large billows of steam. Where'd fall go? Feels like winter! Rain and grapple drove me back to shelter.
13764 20 Sep 2019 @ 0742 --- bbev 2D, 8hrs: Quietly steaming, no water, runoff channels dry. Cistern overflowing in all directions.
13762 19 Sep 2019 @ 1653 --- cb 1D 17H PE. Gently steaming. everything dry as a bone. Cistern Spring water is ~4' below the inner tube rim. vigorous boil and beautiful blue color
13746 19 Sep 2019 @ 0755 --- bbev 1D, 8hrs: Quiet, steamy, runoffs dry. Cistern steaming, can just see water 6+' below rim of inner tube and can hear light boil.
13743 18 Sep 2019 @ 1755 --- cb Gently huffing billows of steam. All channels and platform dry. NV channel looks like someone poured Plaster of Paris or white paint down it. VERY WHITE! Its Cistern Spring has drained. no water, no steam, no sounds. bone dry
13736 18 Sep 2019 @ 0842 18 Sep 2019 @ 0920 Ben VL 9h in. In secondary water phase. Steady jetting from both vents. NV 80' at times, SV as high as 40'. Less steady, NV fluctuating in the 30-80' range, and SV closer to 20-30' by end of observation. Cistern ~2' down. The muddy pool is now a light milky color from the eruption. Steady stream of water at steerage and a trickle down the NV channel. Area between Cistern and Steerage has piles of pine needles. BW is SLICK! Literally sliding down from the upper deck to the main BW using the rail to steer.
13732 18 Sep 2019 @ 0745 --- bbev 8hrs: Ice skated to SB and Cistern. Both vents in strong, continuous jetting, NV 60-80', SV 15-25'. Impossible to walk up hill without using handrails.
13728 17 Sep 2019 @ 1630 17 Sep 2019 @ 1730 cb start of a active period @ 1640 with concerted play from both vents. 1714 concerted minor with vertical from both vents. NV 60' SV 30'! 1716 concerted play, some vertical but weaker and 1720 another smaller concerted NVSV. not much adter that. i left the area at 1730.
13727 17 Sep 2019 @ 1430 17 Sep 2019 @ 1520 bbev At 1530 there is evidence of a solid 4 runoff at steerage. I didn't see much concerted play during this observation. 2 SV solo's ~15' during this time period. NV ~25 '.
13724 17 Sep 2019 @ 0800 17 Sep 2019 @ 0930 bbev 0800 - 0900 Not much notable activity. At steerage just a consistent trickle of water till about 0904 when we had a concerted minor that put a weak 3 down the channel with several more after that until I left the area. Cistern pool is high with a good boil and in overflow.
13720 16 Sep 2019 @ 1320 16 Sep 2019 @ 1720 Polly Improvement as the day went on. Sustained concerted minors at 1343, 1347 (with Sj to 20’), 1357 (both S & N to 20’), 1419 (N & S both near treetop level from lower platform - no NV), 1425, 1535, 1540, & 1718. After I joined Bob at about 1640, concerted minors with NV were seen at 1659 & 1700, plus a quick NV bounce at 1719. Some of the minors seen today produced Babbling Brooks.
13718 16 Sep 2019 @ 1220 16 Sep 2019 @ 1258 Polly The best minors that I saw were at about 1245 - 1255. One included North Vertical ~10-15’ and sustained for a few seconds. At 1250 a concerted minor had a rumbly shake to it. Some of the minors had quick pauses inserted in them which I think will probably turn into longer sustained minors as we get go further into the interval.
13703 15 Sep 2019 @ 1804 --- cb 3D 20H PE. water has returned to the system. SV ~15', NV wispy angled jets ~20'. Not much grumbling. Back shoulder is dry. SV had one meh solo, angled jet that put a fair amount of water down the channel. SV channel is wet with a consistent flow of water into the trough and out beyond the bridge to the creek. 1756 Concerted minor that put a 2 on the Tara scale down SV channel. Cistern Spring is high. Overflowing in 4 directions including the muddy pool. sorry for no morning report, we went on a hike.
13692 14 Sep 2019 @ 1822 --- bbev 2D, ~21hrs: Quiet and steamy. SV runoff bone dry and snow white. No water seen from either vent.
13688 14 Sep 2019 @ 1010 --- cb 2D 12.5H post eruptive. SB is quiet and gently steaming. Water has not yet returned to the platform. All runoff channels are dry as is ET and Jabba. Cistern Spring is in overflow in all 3 directions. (not into the muddy pool)and all its overflow catch basins are full, steamy and overflowing. The pool is milky and a brilliant blue color. Nice boil.
13682 13 Sep 2019 @ 1605 --- cb 1D 18H post eruptive. SB is quiet. gently steaming. All channels dry
13676 13 Sep 2019 @ 0850 --- cb 1D 11.5H post eruptive. Gently steaming. all channels dry. Cistern Spring water level is down at the bottom of the inner tube. The pool is not visable yet but i can see the top of an occational splash. Audible boil. Very steamy.
13665 12 Sep 2019 @ 1700 --- cb SB is gently billowing steaming. SV runoff channel is snow white! Cistern drained. no steam, no sounds, no water.
13656 12 Sep 2019 @ 0742 --- bbev 10hrs: Both vents jetting continuously, NV 50-60' with smaller bursts in the vertical area. SV 15-25' and steady, very milky runoff.
13658 12 Sep 2019 @ 0645 12 Sep 2019 @ 0715 William 9hrs post eruptive - both vents throwing 15'-20' continuous wide water and some jetting to 50'-60'.
13653 11 Sep 2019 @ 1900 --- Lotus nice show about 17:30 but no eruption today yet
13667 11 Sep 2019 @ 0949 11 Sep 2019 @ 1800 Polly I noted that the South Vent channel appeared to be very white by 0957. Some things looked better today (better organization of some minor series - build-up & follow-through). I noted Raging Rivers at 0953, 1059, & 1143. The big change, though, came at around 1730 with a very strong series that was more typical of those before previous eruptions. (On days before this, series often consisted of one strong minor followed either by weaker ones or with no follow up. Those usually had no buildup to the strong one. Also, the stronger minors usually ended with a South Jet solo.)
13650 10 Sep 2019 @ 2354 --- hurleyintjl No eruption as of 2330
13649 10 Sep 2019 @ 2234 --- Tara Sustained minor, seemed to be more of what was reported earlier with NV & SV vertical but SV took over the minor, holding at 30' with heavy discharge, then all quiet. No follow up vertical, left platform at 2240.
13648 10 Sep 2019 @ 0630 10 Sep 2019 @ 1930 bhoppe Some strong, mildly bouncy minors throughout the day. Almost all minors accompanied by strong output from SV which seemed to take over most of the energy. NV wasn't able to sustain any of its minors to make that final push.
13647 10 Sep 2019 @ 1905 --- Lotus no eruption yet!
EntrySourceLinkComment
03 Jun 2020 @ 1552 JSJ https://www.flickr.com/photos/jsjgeology/49969235931 Tantalus Creek discharge graph showing Steamboat Geyser's 3:52 PM major eruption on 3 June 2020.
03 Jun 2020 @ 1552 JSJ https://www.flickr.com/photos/jsjgeology/49969223481 Norris Junction seismogram showing Steamboat Geyser's 3:52 PM major eruption on 3 June 2020. Can definitely see pauses & restarts between 5:00 & 5:30 PM on the seismic signal
31 May 2020 @ 0623 JSJ https://www.flickr.com/photos/jsjgeology/49955983917/in/photostream/ Norris Junction seismogram showing Steamboat Geyser's 6:23 AM major eruption on 31 May 2020.
31 May 2020 @ 0623 JSJ https://www.flickr.com/photos/jsjgeology/49955700531 Norris Museum seismogram showing Steamboat Geyser's 6:23 AM major eruption on 31 May 2020.
31 May 2020 @ 0623 JSJ https://www.flickr.com/photos/jsjgeology/49956315128 Tantalus Creek discharge graph showing Steamboat Geyser's 6:23 AM major eruption on 31 May 2020.
23 May 2020 @ 1507 JSJ https://www.flickr.com/photos/jsjgeology/49928747257 Tantalus Creek discharge graph showing Steamboat Geyser's mid-afternoon major eruption on 23 May 2020.
23 May 2020 @ 1507 JSJ https://www.flickr.com/photos/jsjgeology/49928747167 Norris Museum seismogram showing Steamboat Geyser's mid-afternoon major eruption on 23 May 2020.
19 May 2020 @ 2011 JSJ https://www.flickr.com/photos/jsjgeology/49915257686 Tantalus Creek discharge graph showing Steamboat Geyser's ~8:11 PM major eruption on 19 May 2020.
19 May 2020 @ 2011 JSJ https://www.flickr.com/photos/jsjgeology/49915036131 Norris Museum seismogram showing Steamboat Geyser's ~8:11 PM major eruption on 19 May 2020.
14 May 2020 @ 0416 JSJ https://www.flickr.com/photos/jsjgeology/49895055642 Tantalus Creek discharge graph showing Steamboat Geyser's ~4:16 AM major eruption on 14 May 2020.
14 May 2020 @ 0416 JSJ https://www.flickr.com/photos/jsjgeology/49894397582 Norris Junction seismogram showing Steamboat Geyser's ~4:16 AM major eruption on 14 May 2020.
14 May 2020 @ 0416 JSJ https://www.flickr.com/photos/jsjgeology/49894087151 Norris Museum seismogram showing Steamboat Geyser's ~4:16 AM major eruption on 14 May 2020.
08 May 2020 @ 0105 JSJ https://www.flickr.com/photos/jsjgeology/49870951747 Tantalus Creek discharge graph showing Steamboat Geyser's ~1:04 AM major eruption on 8 May 2020.
08 May 2020 @ 0105 JSJ https://www.flickr.com/photos/jsjgeology/49870644371 Norris Junction seismogram showing Steamboat Geyser's ~1:04 AM major eruption on 8 May 2020.
08 May 2020 @ 0105 enurst https://www.isthisthingon.org/Yellowstone/wrapper.php?file=YNR_SHZ_WY_01-20200508.png Link to seismogram. I see below that 0104 is suggested as starting time. However, if you hide everything to the right of a vertical line set at the 5 minute mark, you cannot see the signal, but you can see it if the line is moved to the 6 minute mark. Therefore I think 0105 is the most correct time. I am about as far from an expert as you can get, though, so will change the time if a good argument is put forward.
27 Apr 2020 @ 1621 JSJ https://www.flickr.com/photos/jsjgeology/49828204111 Tantalus Creek discharge graph showing Steamboat Geyser's 4:21 PM major eruption on 27 April 2020.
27 Apr 2020 @ 1621 JSJ https://www.flickr.com/photos/jsjgeology/49828519002 Norris Museum seismogram showing Steamboat Geyser's 4:21 PM major eruption on 27 April 2020.
10 Apr 2020 @ 1647 JSJ https://www.flickr.com/photos/jsjgeology/49759828321 Tantalus Creek discharge graph showing Steamboat Geyser's 4:47 PM major eruption on 10 April 2020.
10 Apr 2020 @ 1647 JSJ https://www.flickr.com/photos/jsjgeology/49759249661 Norris Museum seismogram showing Steamboat Geyser's 4:47 PM major eruption on 10 April 2020.
02 Apr 2020 @ 0341 JSJ https://www.flickr.com/photos/jsjgeology/49728724147 Tantalus Creek discharge graph showing Steamboat Geyser's 3:41 AM major eruption on 2 April 2020.
Baseline does not exist.


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