Last Known Eruption
3d 5h 33m ago

Latest Eruptions

Eruption DurationInterval
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
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

Interval Statistics

Interval Count100
Min3d 3h 48m
Max20d 20h 42m
Mean7d 22h 30m
Median7d 6h 1m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
14843 01 Jul 2020 @ 1915 01 Jul 2020 @ 1951 cb 2D 18.5H PE. Water is back in the platform. Sporadic minors and the few i saw were not concerted. Most all were angled. SV ~5' and the channel is wet to the foot bridge. NV ~30' angled jetting. Cistern Spring is much like last night. In overflow with a average 2 point boil
14816 30 Jun 2020 @ 1930 --- cb 1D 18.5H PE. SB is gently huffing steam. No water. ET, Jabba and both channels are very dry. Cistern Spring is in overflow, scalloped edges are just barely covered and it has a weak boil. Pool is an opalescent blue color.
14795 29 Jun 2020 @ 1900 --- User34 17.5H P.E. Billowing steam with some more forceful huffs from N.V. Cistern about 1 1/2 feet below inner rim. Calm and beautiful opaque blue.
14785 29 Jun 2020 @ 1701 --- bbev 15.5 hrs PE; quiet, dry. CS drained to 1' below rim of inner tube, ~4' below overflow, no steam, occasional bubble in opalescent pool.
14778 29 Jun 2020 @ 1230 --- Graham Continuous heavy steam with loud huffing. Cistern Spring down a foot.
14771 29 Jun 2020 @ 1014 29 Jun 2020 @ 1043 cb 8H 45M PE. Steamboat is still throwing water from both vents. NV thick angled and vertical jets 30'+. SV Fountaining to 25'+. Cistern Spring has dropped ~2.5' below overflow. pool is calm and clear.
14773 29 Jun 2020 @ 0700 --- Graham 5.5h post eruptive. In steam phase audible from parking lot but not very loud. Both vents in wet steam phase. both main channels running water. Upper deck getting rained on. Middle deck mostly dry except when the wind shifts. Cistern Spring a few inches below overflow.
14763 28 Jun 2020 @ 2145 --- William No Steamboat when I left at 21:45. Some high volume minors at 20:43 but could not get organized.
14761 28 Jun 2020 @ 1930 --- Graham Strong minor at 0908 that could have made it start. Good volume all day. Another push at ~1900 but no SB as of 1930.
14756 28 Jun 2020 @ 0815 28 Jun 2020 @ 1000 Ben VL Report of a radio call for minors at around 0600. Frequent NV vertical during my sit, and a lot better volume and rumbly noises than yesterday. At 0908 we had a huge minor with sustained, thick, and tall NV vertical with SC fountaining and a 4.75 on the flea scale. Could have started if it wanted. No significant follow up.
14748 27 Jun 2020 @ 1930 27 Jun 2020 @ 2230 William Notable concerted vertical minors at 20:25 and 22:01. That said, no follow up or sustain in action. Runoff observed at steerage today was not particularly voluminous or consistent.
14743 27 Jun 2020 @ 0726 27 Jun 2020 @ 0751 bbev 3D, 20 hrs PE; Both vents active. SV with light to mod runoff. Water trickling down back shoulder and far south runoff. Did not see any vert. in short observation.
14737 26 Jun 2020 @ 1710 --- cb 3D 6H PE. mostly weak minors, some concerted. Wispy NV ~15', SV ~5' - 8', some sustained enough to move some debris a few feet more down the channel. SV runoff channel wet with lots of debris from the last eruption still scattered all over the channel. CS is overflowing on all sides with a vigorous boil.
14736 26 Jun 2020 @ 1000 26 Jun 2020 @ 1500 Micah Kipple A noticeable, but not jaw-dropping improvement from Bill's observations. Mostly wispy angled activity from North and South with some weak concerted minors, perhaps one or two splashes of vertical from North. Near the end of our observation period there was a heavier concerted minor that moved gravel down the channel towards the bridge and sent water all the way to the bridge finally.
14734 26 Jun 2020 @ 0918 26 Jun 2020 @ 0954 bbev 2D, 21.5hrs PE; Steamy, soft, deep grumble, SV channel and shoulder dry.0923 first spritz from both vents. 0927 very light spritz from NV. CS high and overflowing. Steam coming from normal NV channel area at steerage. Overall, very quiet during brief observation.
14729 25 Jun 2020 @ 1842 25 Jun 2020 @ 1920 cb 2D7H PE. Steamboat is still gently steaming and grumbling. 1 NV 10' angled splash at 1849 and another at 1902. No water from SV, just steaming. Channels dry except some rain puddling in low depressions in the channels. Cistern Spring is in overflow with a vigorous boil. It is still very steamy and hard to see into the pool.
14728 25 Jun 2020 @ 1036 --- underarockphoto That is NOT Steamboat, please read this before entering anything...
14726 25 Jun 2020 @ 0825 --- cb 1D 20.5 H PE. SB is gently huffing/lightly grumbling mostly steam with an 1 observed wispy 5' - 8' angled jet from NV. SV just steam. Runoff channels are dry. No pooling of water in either channel as observed from middle deck. Cistern Spring is in overflow. It is to steamy to see what the boil looks like.
14725 24 Jun 2020 @ 1830 --- cb 🎣Sorry, Gone fishin!🎣
14717 23 Jun 2020 @ 2020 23 Jun 2020 @ 2055 Ben VL 8H 38M in. In secondary water phase. NV rather thick angled and vertical jetting 20'-35', SV 15'-25'. Beautiful in the evening light. Cistern is about 2' below overflow.
14755 22 Jun 2020 @ 0616 22 Jun 2020 @ 2200 Ben VL NV more active than yesterday upon arrival, but not as much progression as I would have thought. Spent most of the day at decker. Fairly decent activity with a lot of nice minors throughout the day. I noted WooHoo or better minors at 1105, 19, 1315, & 1816 (I probably missed some as well). However, there was a decent minor multiple times per hour. Often without much follow up. At 2110 we had a very sustained push event.
14708 21 Jun 2020 @ 1630 21 Jun 2020 @ 1940 Ben VL Nice improvement from this morning. Bounce at 1638, 42, & 43. Woo's noted at 1731, 1844, 1910, & 1940. Play is mostly SV dominant with frequent sustained angled minors putting out runoff pushes. Nothing greater than a babbling brook. NV less active and usually wispy, but it had some decent angled volume accompanying almost all vertical it put out. Long pauses between most events. SV channel is already starting to turn white.
14704 21 Jun 2020 @ 0850 21 Jun 2020 @ 0920 JeffL ~2D16H Water is back in the system. Deep grumbling. Mostly SV play with a couple decentish splashes out of both vents. Water barely trickling down sv runoff. Cistern in overflow, too steamy to see boil.
14701 21 Jun 2020 @ 0743 21 Jun 2020 @ 0800 bbev 2D,14hrs PE: SV runoff damp, no running water as l arrived. NV runoff no longer trickling water as it had been yesterday morning. Deep grumbling and steamy from SB. 0751 first water seen from either vents, NV 10-15', SV 5'. 0756 spritzy NV, splash from SV. CS high and overflowing, light boil in opalescent pool.
14700 20 Jun 2020 @ 2100 --- Ben VL No change since this AM
14687 20 Jun 2020 @ 0757 --- bbev 1D, 14.5 hrs post erution: quiet and steamy. CS is just 1-2" below overflow. Clear pool, very steamy and difficult to see any boil, no waves or sound. Trough is mostly clear of debris up to bridge. Very light trickle at bottom of SV, with no water seen in SV runoff from mid deck.
14681 19 Jun 2020 @ 1728 --- cb 1D PE. SB platform is quiet. Vents are gently steaming and channels are mostly dry. Still a trickle of water in the NV and SV run off channels at steerage. Cistern Spring has completely drained. No water or steam visible.
14676 19 Jun 2020 @ 1034 --- cb 17H PE. platform quiet. SV channel mostly dry at middle deck but has a trickle of water in the runoff channel at the footbridge. NV channel has a trickle of water running down the channel from some small bubblers within the channel. vents gently steaming. Cistern Spring is ~ 2' below the rim of the inner tube and has a 3" wet bathtub ring above the water level. It has a few random ping pong ball/tennis ball sized bubbles that are breaking the surface of the pool in the center and on the side closest to the bw.
14659 17 Jun 2020 @ 2230 --- hurleyintjl No eruption as of 22:30
14658 17 Jun 2020 @ 0845 17 Jun 2020 @ 2100 cb Increased activity from yesterday. Lots of concerted minors where SV takes over with large fountaining and heavy runoff but not much tall NV vertical seen in the minor play. A few "bounces" where hopeful viewers seem to think/hope NV will move over but, nope! Cistern is still high with a good boil.
14653 16 Jun 2020 @ 2130 --- hurleyintjl No eruption as of 2130
14651 16 Jun 2020 @ 1850 16 Jun 2020 @ 1930 cb 3D 20H post eruptive. Water levels in both vents have improved. Both vents are putting out more water by volume. SV Babbling brook at 1902 + fair SV fountain at 1904 with nice BB. NV angled jetting ~25' and SV ~10'+. Good mix of concerted minors. No vertical. Loud percussive grumbling and pops. 1914 CNVSVH NV almost had some vertical action. Cistern Spring has an increase in its boil. It has VIGOROUS boil with big blooping/roiling boils.
14649 16 Jun 2020 @ 1145 16 Jun 2020 @ 1245 cb 3D 13H post eruptive. I spent a hour at SB in between rain storms. Minors are mostly angled. A few are concerted. All lack height, energy and water. One "meh" concerted minor @ 1217 had a weak babbling brook but, it failed to move any of the debris that had gathered in low depressions, further down the channel. The trough has no accumulation of debris from the previous eruption yet. Typically strong SV minors will move small rocks and sinter bits from the previous eruption down the channel and they lodge at the base of the runoff channel in the trough. Stronger minors will move these bit closer to the channel directly infront of the foot bridge at Steerage. (where the big rock used to be) At this point I dont see any evidence of significant SV minors based on all the debris still on the channel and nothing in the trough has changed since Sunday evening. Cistern Spring is the same as yesterday.
14646 15 Jun 2020 @ 1832 --- cb 2D 20H post eruptive. more water in the system, SV run off channel is wet to the bridge but not a steady trickle of water yet. SV minors are pushing some debris from the last eruption about 10 yards down the channel where it is accumulating. Some concerted minors but they are followed by ~5m of no activity. Activity tonight seemed to be more SV dominated WHEN it was active. Cistern Spring is the same as this morning; high and in overflow.
14644 15 Jun 2020 @ 0915 --- cb 2D 10.5H post eruptive. Water has just barely come back to the platform. 8' angled jet from NV as viewed from the upper platform. (not visable from the middle platform) SV 5' angled jet. Both runoff channels are dry. Just the splash zones next to the vents are damp. Cistern Spring is overflowing with a nice boil (better than last night) and the pool is high.
14641 14 Jun 2020 @ 1900 --- cb 1D 20.5H post eruptive. SB platform is dry as a bone! ET, Jabba, the Dip are all dry. Both vents are just steaming; no huffing sounds at all. Cistern Spring is in overflow, the pool is high (water level is just covering the scalloped edges.) It is a milky, opalescent blue and has a very weak boil. At the trough, debris from the last eruption has been pushed into the channel directly in front of the foot bridge and the standing water is clear.
14635 14 Jun 2020 @ 0900 14 Jun 2020 @ 0930 cb 1D 10H post eruptive. SB platform is dry as are both run off channels. The storm is coming in and i wanted to see the platform before the rain came in. Both vents are gently steaming with an occasional huff of steam. Cistern Spring water level is ~2.5' below overflow. Water is a opalescent blue, it is steaming with a weak 1 point.
14633 13 Jun 2020 @ 1816 --- cb 19.5H post eruptive. SB is gently billowing steam. All channels are dry. The water level in Cistern Spring is ~3' down from the rim of the inner tube. It has a wet water, "bath tub ring", 3 - 4" wide above the water level. It is cloudy blue in color and is very lightly steaming on the North west edge of the pool. There is an occational bubble that breaks the surface and pops.
14625 13 Jun 2020 @ 0600 13 Jun 2020 @ 0715 cb 7.5H from the start yesterday evening. NV jetting water 60'+ and SV jetting water 25'. The run off is milky white and wind direction must have pushed most of the runoff toward the boardwalk and Cistern as the boardwalk between NV runoff channel and Cistern is covered in mud, silt and debris. The boardwalk is soaked from the dip beyond Emerald to the middle platform. Cistern Spring is down 2' below overflow. It is calm and clear. 0700 SB is cycling from jetting water in both vents to steam and back to jetting water. Still is impressive 8 hours later!
14621 12 Jun 2020 @ 2200 --- hurleyintjl No eruption as of 22:00
14622 12 Jun 2020 @ 0600 12 Jun 2020 @ 2120 cb We had a few nice, stand on your feet minors, but they were brief and none of them were sustained or had good follow up.
14608 12 Jun 2020 @ 0614 12 Jun 2020 @ 0912 ypcaribou Sent a few good surges down the SV channel as seen from Steerage at 0614. Looked promising. Walked to far Back Basin after to social distance myself for a sit. From 0645 onward (as seen from far Back Basin), continued angled splashing, mostly N some S, until I left my stakeout location at 0845. Could not see details of minors from that far so will leave that for others to report. My stakeout location revealed the following observation: Blue Mud Steam Vent would audibly surge, followed by the same from Yellow Funnel Spring & Puff N Stuff (simultaneous). About 2 minutes later, SB would splash from N Vent to tree tops (as seen from far away). This possibly coincidental activity continued regularly from about 0645 to 0800 at which point traffic picked up on the main road and my pin-drop quiet location was no longer quiet. 0912 from Steerage, runoff had returned to a babbling brook.
14604 11 Jun 2020 @ 1740 11 Jun 2020 @ 2130 bbev 3D post eruption; Sv dominated most of the activity with quite a number of SVertical solo play with moderate runoff. Concerted play with tall, thickk, angled Nv, just shy of vertical. Several concerted NVertical minors during the 1900 hour, finishing at 2005 with a crowd cheering minor that failed to climb past 50', and did put the only Heavy+ runoff in my book. 2025 was last CNVSVH, followed by several SVSolo before dark.
14595 11 Jun 2020 @ 0905 11 Jun 2020 @ 1005 bbev 2D, 16 hrs post eruption; Sv active with light runoff, water trickling down shoulder and back runoff. 0912 One concerted minor with some NV "bounce" and short sustained vertical Sv. Sv dominated play for rest of the hour, no further vertical seen from either vent. CS is high and overflowing in all directions.
14590 11 Jun 2020 @ 0754 --- cb As of last nights 2D 2H post eruptive mark, water came back into SB last night (6/10) @ 1915 with a wispy 7' NV jet. Cistern Spring's pool is very high and overflowing in all directions
14572 09 Jun 2020 @ 0948 09 Jun 2020 @ 1003 bbev 16hrs post eruption; quiet and steamy, no water. CS is low, 3' below rim of "tube", no steam, no boil. water level 3" below wet line on sides of tube, and just above the cave on south side.
14568 08 Jun 2020 @ 1155 --- underarockphoto Should in basin observers get the chance; any guesses on what is causing the Steamboat-like traces on YNR? The event yesterday was pretty obviously a rainstorm/hailstorm.
14565 08 Jun 2020 @ 1048 --- WillBoekel satellite call to me saying no steamboat yet.
14566 08 Jun 2020 @ 0942 --- underarockphoto https://imgur.com/EVesWhy YNR trace showing what looks like a Steamboat eruption but is not. There is one at 0942 and another at 1034.
14562 07 Jun 2020 @ 0820 07 Jun 2020 @ 1850 bbev Radio call of good activity with vertical minors early so we packed up and went over. Frequent concerted angled minors with occasional vertical from both vents. NV more active in the morning with tall jets and wispy vertical play. SV mostly angled with maybe hourly vertical play. runoff moderate with only a few increases. Activity increased slowly over the afternoon after heavy snowfall and off and on sleet and rain. Several concerted vertical minors with increased runoff occurring hourly. 1635 was an "out of your chair" sustained minor with follow up at 1638, both given the only Heavy + ratings for runoff in my book. Concerted play continued with slight increase in frequency and decrease in vertical activity in NV. Noted that at steerage, in the trough and below the bridge, were clusters of very tiny, black, live bugs, being washed down the channel. We are referring to them as Steerage Fleas.
14555 06 Jun 2020 @ 1040 06 Jun 2020 @ 1320 RLJones Both NV & SV started showing water at 1110. By 1125 NV was having max bursts to 20ft and SV to about 8ft. At 1155 SV was having a few bursts to 10-15ft. By 1228 SV was still 10-15ft with NV still at 20ft max. Between 1155 & 1320 SV had created three light stream flows with small gravel..Color was still clear. At no time were there any vertical or near vertical plays from either vents.
14554 06 Jun 2020 @ 1045 --- RMichaels Only stayed long enough to talk with Carol and Bill Beverly and to make a brief inspection. South Vent's runoff channel is barely wet to bridge. According to Bill and Carol, water first reached the bridge about 15 min prior to my arrival. There is water in the system, but the minors I saw did not have much volume.
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 Had a good, sustained push (as seen from Steerage) about 0754 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 got noticeably VERY tall very fast. After the push, Steamboat quieted way down and the aforementioned steam columns all returned to "normal for a cool morning."
14507 02 Jun 2020 @ 1720 02 Jun 2020 @ 1831 bbev 2D, 11hrs post eruption. 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 200 ft radius around SB's vents. Including the one shade tree at the middle platform which is still upright but has red needles. Can now see middle platform in full from upper, trees on switchback trail to cistern thinning. Can almost see middle deck from steerage. Not yet but view up south vent channel has widened considerably.
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 @ 1050 19 May 2020 @ 1150 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.
14733 15 Oct 2019 @ 2300 16 Oct 2019 @ 0130 Ben VL Had a couple small events but nothing crazy during this time. Activity had seemed to plateau a little bit from the progression starting this afternoon. Left at about 0130.
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.
EntrySourceLinkComment
29 Jun 2020 @ 0129 JSJ https://www.flickr.com/photos/jsjgeology/50056823953 Norris Junction seismogram showing Steamboat Geyser's 1:29 AM major eruption on 29 June 2020.
23 Jun 2020 @ 1142 JSJ https://www.flickr.com/photos/jsjgeology/50038718826 Tantalus Creek discharge graph showing Steamboat Geyser's 11:42 AM major eruption on 23 June 2020.
23 Jun 2020 @ 1142 JSJ https://www.flickr.com/photos/jsjgeology/50038308446 Norris Junction seismogram showing Steamboat Geyser's 11:42 AM major eruption on 23 June 2020.
23 Jun 2020 @ 1142 JarnoO https://drive.google.com/drive/folders/17c3OhY_1jYwFeR18TEqaIl_fW8aBmHp7?usp=sharing Link to a folder containing various visualizations of this eruption from YNR's HHZ band, with particle motion also including its HHE and HHN bands. All times are in UTC.
18 Jun 2020 @ 1728 JarnoO https://drive.google.com/drive/folders/1HFNlpQH_uoe1adE4mZvCly5VCqmz6NGz?usp=sharing Link to a folder containing various visualizations of this eruption from YNR's HHZ band, with particle motion also including its HHE and HHN bands. All times are in UTC.
18 Jun 2020 @ 1728 JSJ https://www.flickr.com/photos/jsjgeology/50021795572 Tantalus Creek discharge graph showing Steamboat Geyser's 5:28 PM major eruption on 18 June 2020.
18 Jun 2020 @ 1728 JSJ https://www.flickr.com/photos/jsjgeology/50021121686 Norris Junction seismogram showing Steamboat Geyser's 5:28 PM major eruption on 18 June 2020.
12 Jun 2020 @ 2240 JarnoO https://drive.google.com/drive/folders/1P8nqy9Td834VhGAfYd4OaXKbDP6xt3vl?usp=sharing Link to a folder containing various visualizations of this eruption from seismic data. All times are in UTC. Data is mainly from YNR's HHZ band, with particle motion also including the HHE and HHN bands.
12 Jun 2020 @ 2240 JSJ https://www.flickr.com/photos/jsjgeology/50000607488 Tantalus Creek discharge graph showing Steamboat Geyser's 10:40 PM major eruption on 12 June 2020.
12 Jun 2020 @ 2240 JSJ https://www.flickr.com/photos/jsjgeology/49999972593 Norris Junction seismogram showing Steamboat Geyser's 10:40 PM major eruption on 12 June 2020.
08 Jun 2020 @ 1737 JSJ https://www.flickr.com/photos/jsjgeology/49987406207 Tantalus Creek discharge graph showing Steamboat Geyser's 5:37 PM major eruption on 8 June 2020.
08 Jun 2020 @ 1737 JSJ https://www.flickr.com/photos/jsjgeology/49986467591 Norris Junction seismogram showing Steamboat Geyser's 5:37 PM major eruption on 8 June 2020.
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.
Baseline does not exist.


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