Last Known Eruption
7d 4h 50m ago

Latest Eruptions

Eruption DurationInterval
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
21 Feb 2007 @ 16001y 274d 2h 19m
23 May 2005 @ 1441 maj1y 213d 18h 15m
22 Oct 2003 @ 2026 maj178d 16h 32m
27 Apr 2003 @ 0354 E maj32d 2h 22m
26 Mar 2003 @ 0032 E maj193d 3h 12m
13 Sep 2002 @ 2220 maj140d 20m
26 Apr 2002 @ 2200 ie maj1y 359d 16h 0m
02 May 2000 @ 0600 ie maj8y 214d 14h 11m
02 Oct 1991 @ 1549 maj1y 120d 7h 41m
04 Jun 1990 @ 0808237d 12h 31m
09 Oct 1989 @ 1937 A157d 8h 33m
05 May 1989 @ 1104 maj12m 109d 20h 19m
15 Jan 1989 @ 1345 A maj4y 112d 10m
26 Sep 1984 @ 1435 maj20m 82d 5h 34m
06 Jul 1984 @ 0901 maj8m 23d 9h 11m
12 Jun 1984 @ 2350 maj~19m 19d 19h 5m
24 May 1984 @ 0445 A69d 5h 45m
15 Mar 1984 @ 2200 A93d 13h 0m
13 Dec 1983 @ 0900 A106d 20h 2m
28 Aug 1983 @ 135865d 18h 33m
23 Jun 1983 @ 192516m 47d 19h 25m
07 May 1983 @ 0000 A20d 6h 3m
16 Apr 1983 @ 165714d 16h 57m

Interval Statistics

Interval Count100
Min3d 3h 48m
Max8y 214d 14h 11m
Mean133d 16h 35m
Median7d 17h 46m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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!
13638 09 Sep 2019 @ 0900 09 Sep 2019 @ 2015 mdschwarz Strong concerted vertical minors roughly every 2 hours, starting with the false start at 1159, through 1800-ish.
13637 09 Sep 2019 @ 1159 --- Tara Large false start minor, NV spike to 75 ft. NV Granding, sustained SV vertical, 5+ overflow. No substantial follow up as of 1405.
13633 08 Sep 2019 @ 2318 08 Sep 2019 @ 2330 JarnoO Spike reaching 59.5°C/139.1°F at its highest @ 2322:38 E occurred between these times, with @ 2318:38 E 41.9°C/~107.2°F (spike ~start) and @ 2330:38 E 41.2°C/~106.2°F (spike ~end). Probably a 'silver bullet' at that time or a set of closely-spaced minors. Rough average between 2200:38 E and 0100:38 E was 35°C/95°F, excluding the spike.
13630 08 Sep 2019 @ 0930 08 Sep 2019 @ 1320 Tara Evidence of good overflows overnight. During observation period overflows stayed mostly at a 2 except for the following: 1031-3, 1040-4, 1056-3, 1109-4+ (NV tall vertical SV sustain), 1115-3+, 1124-4, 1209-3, 1236-3 (NV low vertical), 1240-3, 1301-3, 1307-3, 1314-3. 1109 minor was the strongest seen, "Woo" on the platform scale but did not get called on the radio and no immediate follow up. No radio calls as of 1400.
13621 07 Sep 2019 @ 1852 07 Sep 2019 @ 1935 bbev 4D, 16hrs: Steady runoff from SV, with evidence of heavier runoff during the day. NV mostly wispy jetting, nothing with much volume or close to vertical. Neither vent sustained or vertical during brief observation.
13619 07 Sep 2019 @ 1309 07 Sep 2019 @ 1409 Polly Almost all minors had concerted starts. The best minors were at 1309 (~a 20 second duration), 1337 (C with some North Vertical but not too tall & BB that I could hear all the way down the channel), & 1351 (C with quick N bounce then N Vert & BB). Some jetting from South Vent, (over ET), and a couple of small bounces in the North Vent center spot.
13611 07 Sep 2019 @ 0800 --- cb 4D 5H post eruptive. Steamboat is spashy and rumbling. very steamy and cold this morning, hard to see the vents activity other than steam. Some streamers from NV ~25+'. SV ~15+' based on streamers. SV runoff channel has a fairly constant runoff as does the back shoulder. The trough has additional gravel added from good minors and stick is 13" exposed. Cistern Spring is clear, high, overflowing nicely with a nice 2 point boil.
13605 06 Sep 2019 @ 1724 06 Sep 2019 @ 1801 bbev 3D, 15hrs: Both vents splashing, NV jetting at times to 20+', SV also having 20' minors with very little runoff. SV runoff has steady trickle at bridge.
13590 06 Sep 2019 @ 0755 --- bbev 3D, 5+hrs: Both vents lightly splashing, SV runoff wet. No water making it to bridge. 18" of stick exposed, trough mostly empty of gravel, and half full of standing water. Cistern overflowing in all directions, with light boil.
13570 05 Sep 2019 @ 0855 --- cb 2D 6H post eruptive. Gently billowing steam. No water, light grumbling, runoff channels are dry as is ET and gabba. NV runoff channel just below the bridge is still steamy along the E berm. Cistern Spring is in overflow on 3 sides with what seems like a gentle boil. To steamy to really see but i cant hear it. Just see small convection waves.
13549 04 Sep 2019 @ 2010 --- CrisG Gentle steaming from the vents. No water seen or heard.
13537 04 Sep 2019 @ 0750 --- bbev 1D, 5hrs: Quietly steaming, Cistern empty, light steam, no sight or sound of water. NV runoff area steamy again.
13526 03 Sep 2019 @ 1553 --- cb SB vents are still rhythmically huffing. NV is a mix of water and steam to 15'. SV all steam. SV runoff channel is damp as is the back shoulder. Cistern Spring is down 2.5' from the inner tube rim, calm and deep blue in color.
13525 03 Sep 2019 @ 1030 --- mdschwarz Both vents had water. South Vent was its characteristic V shape, North sending up angled spiked jets to variable heights nearly continuously.
13507 03 Sep 2019 @ 0754 --- bbev 5hrs, 20min: Steamboat roar heard from parking lot. NV continuous jetting 60-80'. SV heavy steam with some water trickling down runoff.
13504 02 Sep 2019 @ 0630 02 Sep 2019 @ 1815 EmilyW Arrived at the steerage early in the morning. Whole day was categorized by larger events compared to last Monday. The day seemed like it was having mostly angled south and a lot of aggressive and kinda bouncy stuff out of north. Spaced about 15?minutes apart from one another or less. I was not keeping track of time. There were 3 events that created 5 level runoff. At about 1100 was the last one that was a “soil your underpants moment” as I termed it. Huge, vertical, sustained out of both vents that didn’t seem to have any follow up or lead up. But not quite tall enough or sustained enough to initiate. I even thought it might start but it did not. It then went into a lull that lasted for about 5 hrs until about 1630 when some angled and vertical minors were occurring that wouldn’t follow up but peeked my interest. A lot less runoff than in the morning with 2-3s and when I left at 1815 from the steerage, it seemed to be coming back a little bit but not making me excited. So I decided pack it in and come back the next day.
13503 02 Sep 2019 @ 0830 02 Sep 2019 @ 1345 Tara Large minor with a 4 overflow reported by others at 0720. Then pretty quiet until 3 large minors: 1027 sustained NV vertical and long SV duration, 5+ overflow; 1045 strong vertical from both vents and 5 overflow; and 1106 tall, wide NV vertical with heavy SV runoff, 5+ overflow. After that max flow reported from steerage was 2-2.5, occasional bounce but not sustained before I left the platform at 1345. Thanks Emily W for reports from steerage.
13522 01 Sep 2019 @ 2053 01 Sep 2019 @ 2156 Wesley-Wohlman 2053 Good Minor with lots of vertical. ~2126 Good minor with lots of south runoff, high south. 2156 sustained minor, little vertical.
13498 01 Sep 2019 @ 2045 01 Sep 2019 @ 2115 S.Glasser Some very decent play. very sorry, I did not note times. But two decent events. I am not great on what events are called but head a very good push vertical north sustained south, a lot of water and runoff. We were surprised it didn't erupt during the first push. Second "event" shorter with decent vertical. runoff less as south was not sustained as long. Dimitri, Will and a couple others remained and will monitor over night.
13495 01 Sep 2019 @ 1917 --- Graham One decent minor with sustained vertical at this time. No follow up. Most people left for the night.
13493 01 Sep 2019 @ 1200 01 Sep 2019 @ 1635 Janet Jones Some nice minors, but no eruption as of 1635
13486 01 Sep 2019 @ 0750 01 Sep 2019 @ 1030 cb 4D 21H post eruptive. According to early morning gazers SB has had a few babbling brooks and 1 minor that had some vertical. Steamy this morning so its hard to view the vents play. Good runoff and nice percussive grumbling. @ steerage the stick is 12" exposed and it looks like there has been minors that put water over to the left side of the bridge that went under the bridge and extended out 3' past the bridge. Trough is still collecting debris down the runoff channel. Run off on the Micah scale was 2.5 during this observation period. Cistern Spring pool is high with good overflow and a 2 point boil.
13471 31 Aug 2019 @ 0752 --- cb 3D 21 H post eruptive. water has returned to the system. SV runoff channel is wet to the bridge. NV has a few angled splashes 15 -20'. SV has some strong angled jetting, enough to roll debris down the channel. back shoulder is wet. @ steerage the channel has a thin but constant trickle of water. The runoff channels in the delta beyond the bridge have standing water to the first little grouping of trees. Cistern Spring is still high, overflowing in all directions, with a mediocre boil.
13468 30 Aug 2019 @ 1630 --- cb SB had one 5' weak NV splash. SV spritzed a bit. Both runoff channels are dry as a bone as is Gabba and ET. Cistern Spring is in copious overflow out all sides + the pool in between the boardwalk and CS. It has a mediocre boil.
13462 30 Aug 2019 @ 0757 30 Aug 2019 @ 0817 bbev 2D, 21hrs: NV spritzing 5-10'. SV channel completely dry. Lots of steam, very little water. No water seen from SV. 0810 no additional splashing from NV. Cistern overflowing in all directions from opalescent pool, very light boil.
13444 29 Aug 2019 @ 0750 --- bbev 1D, 21hrs: Quiet, steamy, runoff dry. Cistern 12" below rim of inner tube, which makes it 40-48" below overflow. Quiet boil in clear, steamy pool
13434 28 Aug 2019 @ 0800 --- cb 21H 20m post eruptive. SB is quiet. gently billowing a large column of steam but vents are quiet and channels dry. The bw from the bench to the platforms is VERY wet! Cistern spring is empty, no steam, no water, no sounds. The trough is 90% dredged. still a bit of debris in the out flow basin. stick is 16" exposed.
13414 27 Aug 2019 @ 1258 --- bbev Still in strong, loud steam.
13421 27 Aug 2019 @ 0530 27 Aug 2019 @ 1047 EmilyW Arrived at about 530 in the morning to the platform. Didn’t pay attention for the first two hours or so of the sit as I was running around from the steerage to around the basin trying to warm my cold wet feet. But then I grabbed my book and was sitting at the base of the steerage for the rest of the time until the start of the major. Runoff from that vantage point did not seem any different than the previous day. Seemed like there was some good runoff overnight based on wet channels but nothing seen in the morning that seemed to match this runoff. It wasn’t until about 1037 or so when the minors and runoff started significantly increasing. The runoff stayed at at least a 2.5+ to 4 the whole time until the start of the major. Even when the vents were quiet the runoff dId not cease. This of course built with the size and verticality of the minors that eventually initiated the start of the major at 1047. Start was an amazingly tall and rumbling start from the steerage. Absolutely awesome. Looking forward for a shot for the Labor Day crowd this weekend or perhaps Monday or Tuesday. GO STEAMBOAT!
13412 26 Aug 2019 @ 0700 26 Aug 2019 @ 1900 bbev Not much improvement from brief observation last night. One nice minor at~1230 with 4 runoff. Nothing sustained for any time, not any real good SV runoff during the day.
13410 26 Aug 2019 @ 0830 26 Aug 2019 @ 1825 EmilyW Spent most of My day at the steerage. Mostly angled south and north. There was also only one occasion where what I would call a 4 on the runoff scale occurred and that was at around 1230 when there was one of the only true NSSV large minors that made me stand up. Most runoff was at most a 3 and and most of the time a 1-2. It seemed like south would have sustained angled minors to about 20’ without north. And sometimes north would have a large vertical spike but would not sustain. This seemed like the activity in the morning. Most of these sustained angled south produced 2-3 runoff. There was one event at 1230 ish that produced the above observation. It then wasn’t interesting for the afternoon until later on around 1630-1730 north finally got some bounce, verticality, and size and south vent was not sustaining or putting out much water at all. This activity culminated in 2 large but still kinda eh minors with no follow up and imo was the most interesting thing all day. Seemed like it went into a lull after that. Left at 1830. Never seemed enthusiastic about initiating a major eruption when I was there. Hopefully tomorrow.
13404 25 Aug 2019 @ 1830 25 Aug 2019 @ 2027 bbev Several concerted sustained minors with vertical from both vents. SV runoff 3-4 on at least 2 occasions.
13392 25 Aug 2019 @ 0747 25 Aug 2019 @ 0807 ypcaribou Almost constant water down SV channel at bridge. Pool there looked empty of much gravel but I will defer to those more knowledgeable about that. Water pooling to right of the main spot at steerage. NV & SV low and angled every 1 to 2 min but not starting together. NV mostly initiating. Not tall but lots of water rushing down hill. NV channel dry. Base of tree and edge other side of NV bridge still steaming. Cold morning so SB water somewhat shrouded at times. Area behind and to right of SV damp. Maybe 3' x 3' square of white string secured to ground just below mid-deck Steamboat sign.
13378 24 Aug 2019 @ 1733 --- bbev ~4D, 5hrs: Occasioal jetting from both vents. SV runoff wet. Cistern overflowing in all directions. Trickle just reaching bridge, not enough to overflow the trough. NV channel and tree still steaming below bridge.
13373 24 Aug 2019 @ 0732 24 Aug 2019 @ 0817 cb 3D 18.5H post eruptive. Water just entering the system. SV runoff channel is damp about 15' from the vent but bone dry from there down to the bridge. Occational small splashes from both vents. Nice bellowing steam and rumbling sounds. Cistern Spring pool is high, clear and in good overflow. (trickle of water into the muddy pool) The steam coming from the NE side of the berm, below the bridge, in the NV runoff channel has increased. It emits a wonder pine essence!
EntrySourceLinkComment
08 Nov 2019 @ 0359 JSJ https://www.flickr.com/photos/jsjgeology/49034946302 Tantalus Creek discharge graph showing Steamboat Geyser's 3:59 AM major eruption on 8 November 2019.
08 Nov 2019 @ 0359 JSJ https://www.flickr.com/photos/jsjgeology/49032746238 Norris Junction seismogram showing Steamboat Geyser's 3:59 AM major eruption on 8 November 2019.
08 Nov 2019 @ 0359 JSJ https://www.flickr.com/photos/jsjgeology/49033249391 Norris Museum seismogram showing Steamboat Geyser's 3:59 AM major eruption on 8 November 2019.
30 Oct 2019 @ 1553 JSJ https://www.flickr.com/photos/jsjgeology/48989684852 Tantalus Creek discharge graph showing Steamboat Geyser's 3:53 PM major eruption on 30 October 2019.
30 Oct 2019 @ 1553 JSJ https://www.flickr.com/photos/jsjgeology/48989180311 Norris Museum seismogram showing Steamboat Geyser's 3:53 PM major eruption on 30 October 2019.
22 Oct 2019 @ 1316 JSJ https://www.flickr.com/photos/jsjgeology/48945594291 Tantalus Creek discharge graph showing Steamboat Geyser's 1:16 PM major eruption on 22 October 2019.
22 Oct 2019 @ 1316 JSJ https://www.flickr.com/photos/jsjgeology/48944667857 Norris Museum seismogram showing Steamboat Geyser's 1:16 PM major eruption on 22 October 2019.
22 Oct 2019 @ 1316 JoeN https://natwebcaww02.wr.usgs.gov/nwisweb/data/img/USGS.06036940.82337.00060..20191020.20191022.log.0.p50.gif Tantalus water gauge
22 Oct 2019 @ 1316 JoeN https://quake.utah.edu/station/heli/YNM.png?1571781784863 seismograph
01 Oct 2019 @ 1253 KW https://www.youtube.com/watch?v=Cue0PUfEoW8 Video by Klaus W showing Steamboat Geyser's 12:53 major eruption on 1 October 2019.
01 Oct 2019 @ 1253 KW https://www.youtube.com/watch?v=mvIv9XiQIY8 Video by Klaus W showing the start of Steamboat Geyser's 12:53 major eruption on 1 October 2019.
30 Jul 2019 @ 0720 JSJ https://www.youtube.com/watch?v=ILGZGQEAf5g#t=6m00s Video of the start of Steamboat Geyser's 7:20 AM major eruption on 30 July 2019.
16 Oct 2019 @ 0351 JSJ https://www.flickr.com/photos/jsjgeology/48910256197 Tantalus Creek discharge graph showing Steamboat Geyser's 3:51 AM major eruption on 16 October 2019.
16 Oct 2019 @ 0351 JSJ https://www.flickr.com/photos/jsjgeology/48908836746 Norris Junction seismogram showing Steamboat Geyser's 3:51 AM major eruption on 16 October 2019.
16 Oct 2019 @ 0351 JSJ https://www.flickr.com/photos/jsjgeology/48908836361 Norris Museum seismogram showing Steamboat Geyser's 3:51 AM major eruption on 16 October 2019.
16 Oct 2019 @ 0351 CraigC https://quake.utah.edu/station/heli/YNM.png?1571220398956 YNM seismo
07 Oct 2019 @ 2045 JSJ https://www.flickr.com/photos/jsjgeology/48865728781 Tantalus Creek discharge graph showing Steamboat Geyser's 8:45 PM major eruption on 7 October 2019.
07 Oct 2019 @ 2045 JSJ https://www.flickr.com/photos/jsjgeology/48862985068 Norris Junction seismogram showing Steamboat Geyser's 8:45 PM major eruption on 7 October 2019.
07 Oct 2019 @ 2045 JSJ https://www.flickr.com/photos/jsjgeology/48863709402 Norris Museum seismogram showing Steamboat Geyser's 8:45 PM major eruption on 7 October 2019.
01 Oct 2019 @ 1253 JSJ https://www.flickr.com/photos/jsjgeology/48829852486 Tantalus Creek discharge graph showing Steamboat Geyser's 12:53 PM major eruption on 1 October 2019.
Baseline does not exist.


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