Last Known Eruption
2d 21h 8m ago

Latest Eruptions

Eruption DurationInterval
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
02 Apr 1983 @ 0000 A9d 9h 20m
23 Mar 1983 @ 144010d 14h 40m
13 Mar 1983 @ 0000 A12d 0m
01 Mar 1983 @ 0000 A24d 13h 5m
04 Feb 1983 @ 105515d 16h 55m
19 Jan 1983 @ 1800 ie18d 18h 0m
01 Jan 1983 @ 0000 A24d 4h 0m

Interval Statistics

Interval Count100
Min3d 3h 48m
Max8y 214d 14h 11m
Mean134d 7h 56m
Median8d 4h 56m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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!
13358 23 Aug 2019 @ 0820 --- CraigC quietly steaming, no water, runoff channel dry. 842 small jetting from NV. 851 10 to 15 foot jets from NV.
13349 22 Aug 2019 @ 0750 --- bbev 1D, 19hrs: Steamboat quietly steaming, runoff bone dry. Steam continues to come out of area on left side of NV runoff below bridge. Steam coming from layer 6" and 12" below ground level on either side of dead tree in channel. Trough is completely dredged with 18+" of stick exposed.
13335 21 Aug 2019 @ 0750 --- bbev 19hrs: NV softly huffing, SV runoff damp. No water seen.
13320 19 Aug 2019 @ 2030 --- CraigC slight increase in activity from the previous few hours, with a decent concerted vertical minor, enough to give me pause about leaving, then several follow-up minors, each decreasing in energy for about 30 minutes.
13319 19 Aug 2019 @ 0730 19 Aug 2019 @ 1930 WillBoekel slightly better than yesterday. some concerted play. a few nice concerted minors but no real attempt to start. Stayed very consistent all day. micah had an overall average runoff level for the day of around 2.8 on his scale.
13326 19 Aug 2019 @ 0653 --- bbev 6D, 9hrs: Cold and steamy this morning. SV having strong minors with good overflow. Cistern remains high and overflowing in all directions. Trough has refilled with 3" of stick showing, likely from additional debris rolled off shoulder after yesterday afternoons near start.
13313 18 Aug 2019 @ 1300 18 Aug 2019 @ 2049 bbev Minors picked up with concerted vertical sustained activity at 1356, 1510, 1517, 1534, 1541, and 1628 At 1712 NV surged to 75' with sv vertical to 40' for 20-30 sec., in what was as close to any start we have ever seen, without erupting. NV totally shut down and SV continued for a full 15sec at 40'. Both vents then fell silent, not even any steam, for 3 min. Exposed 8" of stick in trough from single runoff. Concerted sustained vertical minors resumed at 1728, 1755, 1846, 1936, 1957, 2024, 2047.
13306 18 Aug 2019 @ 0705 18 Aug 2019 @ 1236 bbev 5D, 9.5 hrs: Both vents active, few concerted. SV runoff steady light flow, and has rolled enough gravel to cover the stick at steerage. Cistern is very high, overflowing into muddy pool. 0921 first concerted sustained vertical minor with heavy runoff (4). More large minors at 1026, 1058, and 1152. NV and SV sustained voluminous solo's occurring regularly.
13299 17 Aug 2019 @ 1640 17 Aug 2019 @ 1816 cb 4D 18.5H post eruptive. walked up to a concerted NV SV minor with a bit of bounce. NV ~ 25'+ & SV 10+'. SV runoff channel is wet to the bridge & the back shoulder is damp. The stick at steerage is 12" exposed with much of the debris in the trough gone. @ 1656 & 1702 a CNVSV that rolled lots of pebbles and pine needles into the trough. steady SV runoff. Cistern Spring is a cloudy, milky, opalescent blue pool. it is in overflow with a moderate boil.
13287 16 Aug 2019 @ 1621 --- cb 3D 19H post eruptive. SB is very quiet, gently steaming from all vents. Jabba, ET, back shoulder and SV runoff channel are all bone dry! wispy angled jets from NV ~8'. SV very quiet. only 2 small splashes. Cistern Spring pool is high and in good overflow with a moderate boil.
13279 16 Aug 2019 @ 0754 16 Aug 2019 @ 0806 bbev 3D, 9.5hrs: Heavy fog, SB gently steaming, soft, deep rumble, no water seen from either vent. Cistern overflowing from clear, blue pool, gentle boil. SV runoff dry.
13263 15 Aug 2019 @ 0752 --- bbev 2D, 9.5hrs: Quiet, no water, runoff dry. Cistern 24-28" below overflow! Moderate 2 point boil in clear pool.
13259 14 Aug 2019 @ 1655 --- cb 1D 18.5H post eruptive. gently huffing, no water, channels dry
13227 14 Aug 2019 @ 0754 --- bbev 1D, 9.5hrs: Quietly steaming, no sound at all, runoffs both bone dry. Cistern completely drained. Light steam, no sound or sight of water.
13220 13 Aug 2019 @ 1700 --- cb 18.5 H post eruptive. SB is rhythmically huffing steam from both vents. No water in either vent and channels are dry. Cistern Spring's crater is empty, no water, no steam, no sounds.
13216 13 Aug 2019 @ 1100 13 Aug 2019 @ 1200 cb 13.5 H. Still throwing water NV 75'+ & SV 10'+! Water flowing in both channels especially the NV! Cistern Spring is 2' below the rim of the inner tube. it is very clear, calm and a beautiful deep blue color!
13230 13 Aug 2019 @ 0843 13 Aug 2019 @ 0920 Ben VL In secondary water phase. NV jetting 60' - 100' steady, with some bursting mixed in. SV 20' - 70', obscured by steam sometimes. More like 60' NV and 20' - 30' SV by end of observation. Moderate runoff in the main channel, and a trickle down the North Vent channel. Cistern about 2' below overflow, just above the top of the inner neck.
13213 13 Aug 2019 @ 0801 --- bbev ~9.5 hrs: NV continues to erupt 80+', SV 30+' with steady runoff. Cistern down 24-26" below overflow.
13741 12 Aug 2019 @ 2030 --- Ben VL Call "We just had a nice good series of minors" about this time.
13229 12 Aug 2019 @ 1000 12 Aug 2019 @ 1645 Ben VL Distinct improvement over yesterday's reports. NV 20-40', mostly angled, with good volume most of the day. SV 15-25', commonly producing babbling brooks, even from smaller minors. Had a decent period of activity between 1100 and 1230 with good height and volume and frequent vertical. Most often as a component inside an angled minor. Woo-Hoo at 1154. Very thick 25' NV vertical with good SV runoff. Emerald clear blue/green. Occasional bubbles from the center.
13163 11 Aug 2019 @ 0900 11 Aug 2019 @ 1130 RMichaels Consistent 2-3 level runoffs from 0900 until 1030. Improvement from earlier observations that seemed mildly encouraging, but activity decreased again from 1030 until 1130. Mostly lazy activity from both vents when I left.
13159 11 Aug 2019 @ 0750 11 Aug 2019 @ 0818 RMichaels North Vent frequently to 30-40 feet angled with some thicker jets. South Vent active enough to put audible runoff down channel every couple minutes. SV generally 20-25 feet. Some concerted minors. Back shoulder wet. Did hear some good rumbles. Some moderate runoff surges seen from the bridge, but nothing more than a 2 on 1-5 scale.
13149 10 Aug 2019 @ 1647 --- C Daubert cistern unchanged. emerald in overflow since yesterday evening. steamboat about the same, runoff channel about the same
13120 09 Aug 2019 @ 0753 09 Aug 2019 @ 0809 bbev 10D, 0hrs: NV jetting 25+', SV 15-20'. Cistern unchanged with light overflow. SV steady light runoff at steerage, with a few moderate pushes. Some debris washed and more gravel in trough, possible increase in SV activity, or due to heavy rain most of last night.
13118 08 Aug 2019 @ 1740 08 Aug 2019 @ 1819 bbev ~9D, 10hrs: Very little change from this morning IMO, other then Emerald Spring raising to 1" below overflow. 1804, nice prolonged, SV with best runoff seen. SV more active, more water than this morning's short observation, but runoff at steerage remained unchanged. 1813, past 9 min of steady NV jetting to 30' and SV to 15+'. Some concerted, most not, neither vent has any "bounce".
13105 08 Aug 2019 @ 0744 08 Aug 2019 @ 0805 bbev 9D, 0hrs: Both vents active, few concerted play with 2-3 min periods of quiet. Cistern overflow improved some, trickle of water towards muddy pool. SV runoff remains light steady flow at bridge, with evidence of water in channels below the bridge that were dry yesterday. Vegetation debris in trough and runoff may act as good marker for SV runoff levels.
13094 07 Aug 2019 @ 1745 07 Aug 2019 @ 1845 bbev ~8D, 11hrs: Increased activity from both vents from this morning. Some concerted jetting, 25+' from NV and 10+' fom SV. NV becoming thiccker, but no bounce. SV runoff at bridge is a steady light flow with several light to moderate pushes. Both Cistern and Emerald Spring pools have cleared considerably since this morning, with water levels unchanged.
13085 07 Aug 2019 @ 0732 07 Aug 2019 @ 0805 bbev ~8D, 0hrs: SV channel moist with some pooling, shoulder area is also wet, but no runoff. NV is wispy, jetting 15-20'. Low splashing to just over ET from SV. Light, clear, steady trickle making it past bridge. Trough mostly full, 2" of stick(?) exposed. Some better play from NV seen from steerage, still intermittent. Cistern lightly overflowing with moderate boil. Not much change from Cistern IMO. Emerald still 3-4" below overflow, cloudy, few if any bubbles, but very steamy and hard to see pool. SB has improved some, based on SV runoff that was not there last evening.
13075 06 Aug 2019 @ 1710 --- cb Steamboat shows VERY little water from either vent. Occational wispy minor NV ~10 & SV a wispy 5'. A very thin trail of moisture at the top of SV runoff channel (no pooling) but runoff channel at steerage is BONE DRY! "You can look for me on Geysertimes." 😖
13072 06 Aug 2019 @ 1707 --- mwolf minors, mostly from NV, increased in height/volume between my first observations at 0945 and when I returned around 1430.
13063 06 Aug 2019 @ 0745 06 Aug 2019 @ 0805 bbev 7D, 0hrs: SV runoff damp, do not see any water from vent or in channel. NV wispy, occasionally 15-20'. Very little water. Cistern barely overflowing and moderate boil.
13053 05 Aug 2019 @ 1140 --- steve Steamboat was quietly pushing out steam. The runoff channels were dry. No water noted.
13039 05 Aug 2019 @ 0730 05 Aug 2019 @ 0930 KarlH DISCLAIMER:I am no SB expert. Watched for about 2 hours. There was water there, but only a little. mostly wispy stuff from NV. Very little from SV. Runoff was wet but really even trickling in. Cistern seems to have light overflow off the back down the terraces.Light bubbling in the center. Maybe a bit milky, but I have no reference point.
13033 04 Aug 2019 @ 1914 04 Aug 2019 @ 1925 bbev 5D, 12hrs: Softly huffing, no water seen in brief observation. Cistern, steady rolling boil in mostly clear pool. Just at overflow, with barely a trickle out the SE side. West side has just filled the terrace below, which is not yet overflowing.
13013 04 Aug 2019 @ 0715 --- cb 5D 0H post eruptive. SB is huffing billows of steam this morning. Some grumbing with faintly audible gurgling water sounds deep in the system. No water in either vent and channels are bone dry. CS is ~2' below overflow and has a vigorous boil that is churning the pool. ** @ 805 walking back i stopped to take another peek at SB and the SV runoff channel now has thin strip of moisture with some pooling to the dead trees. sv runoff channel at the bridge is still dry. No water jetting from either vent observed. Shoulder dry.
13011 03 Aug 2019 @ 1910 03 Aug 2019 @ 1915 Stephen_Gemar Activity seemed to be similar to cb’s note this morning. North vent occasionally giving off audible big huffs of steam. No water seen from either vent during brief observation, runoff channels appeared dry.
12992 03 Aug 2019 @ 0750 --- cb 4D 0H post eruptive 45°. Steamboat is very steamy. Occasionally huffing BIG bellows of steam from NV. (The monster want water!) No water in either vent or runoff channel. Cistern water level is 4' below the rim of the inner tube. It has come up a foot overnight. Still a crazy vigorous boil 2 - 3' in height. Very steamy. light brown/beige in color.
12948 02 Aug 2019 @ 0753 --- bbev 3D post eruption: Quietly steaming, no water, both runoff channels bone dry. Two new small trees are now in NV runoff channel below bridge.
12928 01 Aug 2019 @ 1736 01 Aug 2019 @ 1807 bbev 2D, 10 hrs: Quiet and steamy. SV runoff wet. Cistern completely empty, no sound, no steam no water. Light, steady, milky grey runoff at bridge, possibly from last 2 hour rain. Runoff subsided after returning from Tantalus.
EntrySourceLinkComment
17 Sep 2019 @ 2342 JSJ https://www.flickr.com/photos/jsjgeology/48754060568 Tantalus Creek discharge graph showing Steamboat Geyser's 11:42 PM major eruption on 17 September 2019.
17 Sep 2019 @ 2342 JSJ https://www.flickr.com/photos/jsjgeology/48753183757 Norris Junction seismogram showing Steamboat Geyser's 11:42 PM major eruption on 17 September 2019.
17 Sep 2019 @ 2342 JSJ https://www.flickr.com/photos/jsjgeology/48753183527 Norris Museum seismogram showing Steamboat Geyser's 11:42 PM major eruption on 17 September 2019.
11 Sep 2019 @ 2140 JSJ https://www.flickr.com/photos/jsjgeology/48721504221 Tantalus Creek discharge graph showing Steamboat Geyser's 9:40 PM-onward major eruption on 11 September 2019.
11 Sep 2019 @ 2140 JSJ https://www.flickr.com/photos/jsjgeology/48721680917 Norris Junction seismogram showing the entire signature of Steamboat Geyser's 9:40 PM-onward major eruption on 11 September 2019.
11 Sep 2019 @ 2140 JSJ https://www.flickr.com/photos/jsjgeology/48721504181 Norris Museum seismogram showing the entire signature of Steamboat Geyser's 9:40 PM-onward major eruption on 11 September 2019.
03 Sep 2019 @ 0234 JSJ https://www.flickr.com/photos/jsjgeology/48671541792 Tantalus Creek discharge graph showing Steamboat Geyser's 2:34 AM major eruption on 3 September 2019.
03 Sep 2019 @ 0234 JSJ https://www.flickr.com/photos/jsjgeology/48671297267 Norris Junction seismogram showing Steamboat Geyser's 2:34 AM major eruption on 3 September 2019.
03 Sep 2019 @ 0234 JSJ https://www.flickr.com/photos/jsjgeology/48671125856 Norris Museum seismogram showing Steamboat Geyser's 2:34 AM major eruption on 3 September 2019.
11 Sep 2019 @ 2140 EmilyW https://imgur.com/a/bvaa1qt YNM seismograph from early in the eruption
03 Sep 2019 @ 0235 JSJ https://www.flickr.com/photos/jsjgeology/48671541792 Tantalus Creek discharge graph showing Steamboat Geyser's 2:34 AM major eruption on 3 September 2019.
03 Sep 2019 @ 0235 JSJ https://www.flickr.com/photos/jsjgeology/48671297267 Norris Junction seismogram showing Steamboat Geyser's 2:34 AM major eruption on 3 September 2019.
03 Sep 2019 @ 0235 JSJ https://www.flickr.com/photos/jsjgeology/48671125856 Norris Museum seismogram showing Steamboat Geyser's 2:34 AM major eruption on 3 September 2019.
27 Aug 2019 @ 1047 JSJ https://www.youtube.com/watch?v=8lacEb_-b6s Video by David Schwarz of Steamboat Geyser's 10:47 AM major eruption on 27 August 2019.
27 Aug 2019 @ 1047 JSJ https://www.flickr.com/photos/jsjgeology/48632092368 Tantalus Creek discharge graph showing Steamboat Geyser's 10:47 AM major eruption on 27 August 2019.
27 Aug 2019 @ 1047 JSJ https://www.flickr.com/photos/jsjgeology/48632092333 Norris Junction seismogram showing Steamboat Geyser's 10:47 AM major eruption on 27 August 2019.
27 Aug 2019 @ 1047 JSJ https://www.flickr.com/photos/jsjgeology/48632588252 Norris Museum seismogram showing Steamboat Geyser's 10:47 AM major eruption on 27 August 2019.
20 Aug 2019 @ 1251 JSJ https://www.flickr.com/photos/jsjgeology/48588113572 Tantalus Creek discharge graph showing Steamboat Geyser's 12:51 PM-onward major eruption on 20 August 2019.
20 Aug 2019 @ 1251 JSJ https://www.flickr.com/photos/jsjgeology/48588113537 Norris Junction seismogram showing Steamboat Geyser's 12:51 PM-onward major eruption on 20 August 2019.
20 Aug 2019 @ 1251 JSJ https://www.flickr.com/photos/jsjgeology/48587974316 Norris Museum seismogram showing Steamboat Geyser's 12:51 PM-onward major eruption on 20 August 2019.
Baseline does not exist.


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