Last Known Eruption
2d 8h 47m ago

Latest Eruptions

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

Interval Statistics

Interval Count100
Min3d 3h 48m
Max17d 1h 41m
Mean7d 10h 51m
Median7d 1h 46m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
16295 28 Sep 2020 @ 0834 28 Sep 2020 @ 0848 bbev 1D, 22hrs PE; Quietly steaming on cool 20° morning. Cistern also steamy. Can hear water and only able to see vigorous boiling by standing on middle rail in front of the spring.
16291 27 Sep 2020 @ 1605 --- cb 1D 5.5H PE. Steamboat is gently steaming and Cistern has completed drained. No sounds or steam on this chilly fall day!
16277 26 Sep 2020 @ 1655 --- cb 6H 20M in the eruption. SB is still roaring steam, no water and not as powerful as I've seen in the past at this time.
16253 25 Sep 2020 @ 0830 25 Sep 2020 @ 1745 cb 2 nice minors that could have lead to an eruption but NV just doesn't have the juice/umph/upsie to push through a good vertical minor to take it all the way to eruption. One at 1133 that put a solid 4.5 (5 is eruption)down the runoff at the footbridge and had many up on their feet shouting! Another at 1418 that could have been a start but just didn't have what it needed! Both had tall vertical SV that put a raging river down its runoff channel. Cistern Spring is still VERY low and overflowing only out of the established channel to the south. The scalloped edges and biscuits are WAY exposed. (1.5") Very chilly and windy day.
16247 24 Sep 2020 @ 0730 24 Sep 2020 @ 1900 cb A good concerted minor at 0808 this morning that put a raging river down SV. Some events during the day that were mediocre. Activity picked up at 1630 with tall vertical NV and good SV runoff. 1745 nice CNVVSVH++ and another around 1830 as I was getting ready to leave. Cistern Spring water level is very low. It is only overflowing from the established channels to the south and on the backside. Most of the platform is dry where is is normally wet with overflow. Scalloped edges and biscuits around the edge of the pool are exposed. hum....
16245 24 Sep 2020 @ 0700 24 Sep 2020 @ 1710 bbev Some improvement from yesterday. Concerted vertical with heavy runoff every 1-3 hours, but nothing following other than angled minors with weak runoff.
16234 22 Sep 2020 @ 0900 22 Sep 2020 @ 2000 cb SB had a few nice minors at 1144,1542 and a nice thick minor at 1829. Alot of concerted play again today with decent water levels as the day progressed.
16223 21 Sep 2020 @ 1715 --- cb 5D 5.5H. PE. SB SV runoff channel has water to Tantalus creek. Water has not reached the grassy knoll. Debris are still scattered all down SV channel. Frequent SV angled minors to 10'. NV angled and a few vertical bounces to 20'. A trickle of water down the back shoulder and the back runoff channel is damp. ~75% 0f the play is concerted.
16216 21 Sep 2020 @ 0843 21 Sep 2020 @ 0903 bbev 4D, 21hrs PE: very foggy this morning, SB grumbling, NV angled jetting to 20'. SV runoff damp. Can hear SV splashing with trickle coming down runoff. Trickle of runoff at bridge, with water making its way down middle channel below the bridge. Trough mostly clear of gravel, with some build up just under the bridge. Difficult to see, but l do not think there is any water on shoulder or back channel. Cistern just lapping at scalloped edges of pool.
16204 20 Sep 2020 @ 0944 20 Sep 2020 @ 1030 cb 3D 22H PE. Steamboat is lightly grumbling and steamy. SV runoff channel has a very thin area of dampness that extends about 10' from the vent. (most likely from rain last night) 1 NV splash during my observation. Nothing from SV.
16190 19 Sep 2020 @ 0915 --- cb 2D21.5H PE. Steamboat is gently steaming and the platform is bone dry. (observed before the rain has started) Cistern Spring is overflowing to the south, backside and into the muddy pool but not to the NW toward Veteran. (looks to be in early overflow.)
16140 15 Sep 2020 @ 1812 --- Graham At least 4 vertical surges between 0715 and 1945 with the strongest activity ~1400. Runoff has been fine. It just hasn't erupted yet.
16137 14 Sep 2020 @ 1941 --- Graham Several good pushes and vertical. North vent dominated. It has potential to erupt whenever it wants or not.
16124 14 Sep 2020 @ 0833 --- bbev 4D, 17.5hrs SV runoff a steady, light flow. Back shoulder and back runoff have water. Strong, tall, angled 25' NV when l arrived. SV active to 15-20'. Runoff at steerage is light and trough is unchanged from yesterday morning. Real smokey again today
16114 13 Sep 2020 @ 1730 --- cb 4D2.5H.PE. SV runoff channel is damp and still has lots of debris scattered in the channel. Back shoulder/channel, Jabba, ET are bone dry. SV runoff channel at the foot bridge is dry as far up the channel as I can see. Some angled, wispy 15' - 25' NV jets. Occational SV angled, 10' jets. Some concerted but not much water in either. Cistern Spring is the same as this morning.
16098 13 Sep 2020 @ 0831 13 Sep 2020 @ 0857 bbev 3D, 17.5hrs PE: Some splashing from NV. Trickle coming down SV channel, with very little splashing out of the vent. No water on back shoulder or back channel. Channel is dry at steerage and trough is mostly empty of gravel. Cistern overflowing into muddy pool and just covering scalloped edges. Smokey today!
16089 12 Sep 2020 @ 1700 --- cb 3D2H PE. No change since this mornings report.
16087 12 Sep 2020 @ 1130 --- cb 2D20.5H PE. SB is gently huffing. Entire platform bone dry. Did see 1 very small SV splash. Cistern Spring is in overflow on all sides with a moderate boil.
16051 11 Sep 2020 @ 0850 --- cb 1D17H PE. SB platform is dry. Cistern Spring is rising. Just starting to refill. water level still WAY down in the tube. Not visable because of steam and water depth so far down in the tube but I can hear the boil.
16024 08 Sep 2020 @ 0630 08 Sep 2020 @ 1950 Graham Nothing exciting again today or rwported last night. South Vent did improve and join in with North after around 1600. Nothing vertical though.
16025 08 Sep 2020 @ 0800 08 Sep 2020 @ 1930 cb NV seemed to dominate the day with nothing but angled jetting. No vertical play except for a very slight spray around 1700ish. SV was hard to view from any angle for most of the day due to the cold, snowy, steamy conditions that blew SB steam toward the platforms and down toward the foot bridge. SV play & runoff picked up around 1530 with some better runoff and loud percussive grumbling. NV continued its nearly constant play till I left at 1930.
16026 08 Sep 2020 @ 1200 08 Sep 2020 @ 1900 underarockphoto You know the Fan and Mortar notes “angle never quit”? North essentially didn’t stop for several hours. Nearly perpetual angled jetting that alternated between wispy and heavy. Pauses occasionally. One seasoned observer likened it to “wild phase” activity just bleeding energy off the system all day. Absolutely NO signs of a disturbance.
16023 08 Sep 2020 @ 1220 08 Sep 2020 @ 1515 bbev Very little water out of SV. NV was all angled and l saw no vertical from either vent. Someone said, "lt looks like it is stuck"!
16020 08 Sep 2020 @ 0945 08 Sep 2020 @ 1215 jkgood Didn’t observe anything truly attention grabbing all morning. Best wishes y’all!
16016 07 Sep 2020 @ 0600 07 Sep 2020 @ 1800 Graham No minors strong enough to get anyone excited. Left before dark due to the snow.
16011 07 Sep 2020 @ 1600 --- Kitt B No Steamboat as off 1600. Weather started deteriorating around 1500 switching from rain to sleet to snow with steam from the geyser heading either toward the main platform or toward the bridge. Viability was poor most of the afternoon. Saw continuous line of vehicles from Madison intersection to Fountain Flats due to a small herd near the road plus one lone bison in the canyon.
16014 07 Sep 2020 @ 0000 07 Sep 2020 @ 0630 underarockphoto Steamboat continued its activity over night. At 0047 and 0048 a large minor event got Ben and I’d attention. NV was vertical and sustained around 40’ with SV dumping enough water to move most gravel out of the runoff. This event repeated at 0114. Somewhere around 0420 while Hope Brooks and I were surveying baselines at Decker Island and Decker 2 another minor put enough water to cover the grassy knoll. At 0400 the wind shifted and I moved from the Upper platform to Steerage to avoid being clobbered by a surprise eruption. Runoff was a steady babbling brook from 0430 to around 0615 at which time it began slowly dropping to a trickle. The behavior pattern where SV would build in size and volume over the span of an hour, ending in a large concerted minor eruption (usually angled but sometimes vertical) happened four times with the ending minors happening at 0048, 0213, 0330, and 0430. By 0700 this pattern seemed largely gone. It was very easily noticeable from the upper platform by watching the steam in SVs runoff gradually increase in volume and length towards steerage. On a tangential note: the night sit was wonderful, warm and dry. The moon lit everything up, and some passing meteor shower produced large and slow fireballs once every ten to twenty minutes.
16015 06 Sep 2020 @ 0800 06 Sep 2020 @ 2359 underarockphoto At 0800 runoff at Steerage was barely a trickle and the runoff only went a few yards past the bridge. By 0900 the runoff had widened considerably and around 1100 there was finally a minor which fully wet the runoff channels and moved debris. NV rapidly began producing large minors with semi-frequent thick and vertical minors - but SV was no where to be found. SV slowly began increasing in volume throughout the day. A cycle developed where NV appeared to be in control, dragging SV along with it. This cycle ended abruptly around 1900 when SV apparently decided it was ready to play and there were three consecutive minors where SV was fountaining up to 35’ and North had repeated vertical surges. Ben and I moved to Decker after this to be in position to measure the starting surge just in case. For the next five hours minors were well defined and promising enough that we stayed well after dark. The cycle of NV pulling along SV ended after the minors of 1900 and it appeared SV was in control and dragging along NV with it in a cycle that progressed in definition over the next several hours. Minors that appeared capable of initiating an erupting occurred around 1900, 20:35, and 23:00. None had any follow ups. The observations in these comments are entirely my own and do not reflect the observations of all present obsevers. They are posted solely for historical documentation. Any use by the reader is solely at their own discretion and choice.
15996 06 Sep 2020 @ 0700 06 Sep 2020 @ 0715 SteveO Weak jetting from NV & SV. Runoff channel wet to 20' past the bridge, just a little trickle coming down.
15986 05 Sep 2020 @ 1914 --- cb 3D22h40M. PE. SV runoff is damp 30' down the channel from the vent. DAMP is the key word here. SV channel at the foot bridge is DRY! Back shoulder is dry as is the back channel, ET & Jabba. Some occasional minor splashing out of both vents. SV 5' wispy splash. NV Angled 10' - 15' wispy jet. Sounds very "airy" much like this time last interval. Cistern Spring is overflowing on all sides with a weak (flooded) boil.
16010 05 Sep 2020 @ 0904 05 Sep 2020 @ 1007 underarockphoto SUMMARY: Steamboat is slowly waking up with wispy angled North Vent jets to 20-40' and South to 6'. Minors are distinct with periods of quiet between them. Minors tend to begin with grumbling huffs. Water is slowly starting down the runoff channel. No signs of a disturbance. Original Notes 0904, Emerald, clear and calm 0907, NV, angled and wispy, 10ft 0913, NV, wispy and angled, 10ft 0914, Cistern, light boil overflow on all three sides 0916, NV wispy jets. Again at 0917, 0920 0918, Crater Spring, clear and calm 0919, Tantalus, clear and calm 0926, SV 2ft wisp 0929, NV angled to 20ft and SV to 3ft 0935, SV wisp 0940, water slowly going down runoff channel 0941, angled NV to 10ft 0947, NV vertical to 40ft no SV 0954, angled NV to 30ft SV to 4 1007, NV angled to 40ft SV to 8ft runoff 'front' pushed a foot.
15968 05 Sep 2020 @ 0850 --- bbev 3D 12hrs pe: SB quiet, only spritz jetting from NV seen once during brief observation. SV channel bone dry.
15961 04 Sep 2020 @ 1934 --- cb 2D23H PE. Steamboat is gently steaming. Entire platform is dry. Cistern Spring is overflowing on all sides.
15942 03 Sep 2020 @ 1805 --- cb 1D21.5H PE. Steamboat is gently steaming. Platform completely dry. Cistern Spring is filling and the water level ~1.5' below the inner tube rim. It has a 1 point blue-ping :) (blooping) boil!
15926 31 Aug 2020 @ 1950 --- cb 5D2H15m PE. Steamboat has improved a bit from this morning. SV runoff channel has water flowing to the footbridge. The debris has moved ~10' down from the vent and is in small groupings directly across from the middle platform. Not enough strong minors to push them down to the trough yet. SV had a few 5' splashes and NV had some angled 25' jets, some that were "airy" and others that had more water in them but all in all the platform was not very impressive tonight. See what tomorrow brings!
15907 31 Aug 2020 @ 0916 --- cb 4D15H40m PE. SV runoff channel is wet but no water running down the channel and it still has lots of debris in it from the last eruption. The rain/snow had just started when I arrived. Looks like some overnight minors have dampened SV channel yet I didn't see much out of either vent in the 15 minutes I was there. SV had 1 small splash and one NV 10' angled, airy, mostly steamy jet.
15900 30 Aug 2020 @ 1721 30 Aug 2020 @ 1741 cb 4D PE. So...Platform and all vents, runoff channels, ET, Jabba are all bone dry! Some mild grumbling with an occational SV puffball, airy, 3' splash. Nothing out of NV but occational airy, wispy pushes of steam.
15896 30 Aug 2020 @ 1006 30 Aug 2020 @ 1040 cb 3D16.5H PE. SB is starting to grumble with occational huffs of steam. no water in either vent yet. Entire platform is dry. @ 1032 there was a small angled jet from NV & @ 1035 a concerted 15' angled jet from NV with 5' SV. Again @ 1038. Water is back into the system! Cistern Spring is overflowing on all sides with a vigorous boil. It is an opalescent turquoise blue color.
15799 29 Aug 2020 @ 1320 29 Aug 2020 @ 1436 cb 2D 21H PE. Platform and vents are dry. Cistern Spring is overflowing on the south end (toward Echinis) and over the blackside. Just BARELY a trickle over NW side (toward Veteran). Pool is clear blue in color with a moderate boil.
15764 28 Aug 2020 @ 1136 --- cb 1D18H PE. STEAMBOAT is gently steaming. Platform is dry. Cistern Spring is on the rise. water level is not visable yet, (~9' below the rim of the inner tube.) It is very steamy and has an audible roiling, vigorous boil that is putting up an impressive steam cloud.
15735 26 Aug 2020 @ 2112 --- hurleyintjl Left at 2045, no pauses or restarts observed
15728 25 Aug 2020 @ 2045 --- Tara NO Steamboat yet as of this time. Many isolated strong minors throughout the day, many folks left at 2030 as a storm moved into the Norris area.
15721 23 Aug 2020 @ 1700 23 Aug 2020 @ 1715 cb SB platform is still dry as a bone! Some very weak angled play from both vents. SV - 5', NV - 8'. No water in SV runoff channel at all. Cistern Spring is in overflow with a mediocre boil. 1815 walked by again and SV has 5' thin trail of water/dampness that is just starting to extend down from the vent. Back Shoulder, back channel, Jabba all bone dry.
15694 23 Aug 2020 @ 0623 23 Aug 2020 @ 0634 ypcaribou Two whispy, short, angled, random NV. Mostly just huffing. Vents just barely wet. channel bone dry. Cistern in overflow and a milky blue.
15683 22 Aug 2020 @ 1549 --- cb 2D13H PE. Platform is dry and SB is gently steaming. no water or sounds. Cistern Spring is in overflow with a weak boil
15674 21 Aug 2020 @ 2004 --- cb 1D17H PE. SB is gently huffing. Cistern spring is 6' below overflow
15660 20 Aug 2020 @ 1724 --- cb 14H 24M PE. SB is huffing steam from both vents. no water and platform is completely dry. Cistern Spring's pool is down ~1.5' from the rim of the inner tube. The pool is calm and a opalescent steel blue color.
15654 19 Aug 2020 @ 1000 19 Aug 2020 @ 2000 cb 5D5H PE. Water levels improved exponentially overnight and we had some nice minors with good runoff throughout the day. One minor that started just as a thunderstorm was passing us and it got many of us up on our feet coaching it to start but alas, it did not. Good minors after that but "no Steamboat yet".
15638 18 Aug 2020 @ 1000 18 Aug 2020 @ 1030 cb SB is just starting to get water into the platform. Only 1 CNVSV minor that had a small amount of water discharged @ 1024. SV runoff channel is damp ~30' down the channel as viewed from the middle deck. SV channel is bone dry at the foot bridge looking up the channel toward the vents. Back shoulder and back channels are bone dry. @ 1330 SV water had still not reached the foot bridge. @1712 SV runoff channel has a THIN trickle of water at foot bridge. At middle deck some CNVSV minors that put a wee bit of water down the channel but not enough to move the small rocks and debris at all. Back shoulder has a few thin, damp areas but not much and zero water in the back channel. **FYI the Norris basin, parking lot and road will be closed at 1800 tonight thru ~1000 tomorrow morning to move new exhibits into the museum. Please be considerate of this closure!
15630 17 Aug 2020 @ 1927 --- cb 3D 4H PE. Steamboats platform has not changed much since yesterday evening. Some wispy minor play from NV (one 5' angled jet) and 1 SV 2' spray. The whole platform is completely dry! Cistern Spring is overflowing in all directions with a vigorous boil
15617 17 Aug 2020 @ 0749 --- bbev 2D, 16hrs PE; Quiet and steaming on cool morning. Runoff channel bone dry, no water seen.
15612 16 Aug 2020 @ 1859 --- cb 2D3.5H PE. SB is quietly steaming. A faint gurgling sound from NV. No water in the platform yet. Cistern Spring is in overflow with average boil and it is a cloudy turquoise color. FYI, the no-see-ums and deer flies are out in force!
15594 16 Aug 2020 @ 0840 --- cb 1D17H PE. STEAMBOAT is gently steaming away. no water yet. platform dry. slight grumbling. Cistern Spring is refilling and the pool is ~1' below the inner tube rim. It has a vigorous boil.
15572 14 Aug 2020 @ 1945 --- ypcaribou 4h 15m PE (approx) - Steam cloud barely visible above ttees from Elk Park.
15500 10 Aug 2020 @ 1500 --- William 16h PE: Steadily billowing fluffy steam with occasional weak puffs out of NV. Some water still pooled in the runoff as viewed from middle deck. Cistern is 1.5-2' below the inner tube, with a bright blue color. Wind direction caused the area of boardwalk between Cistern and the bench before Steerage to be coated with .25" of pine needles and dirt. Muddy pool is particularly full with water.
15498 10 Aug 2020 @ 0800 --- KarlH 9 hrs post eruption, constant water erupting to 50-70 feet from NV, 20-30 feet from SV.
15468 09 Aug 2020 @ 0600 09 Aug 2020 @ 1230 jkgood Activity seems largely the same as yesterday so far. A single nice minor at ~11:30, and seemed to perk up a bit afterward, some good grumbles and pops. Had to head out hope it lights up for y’all!
15453 07 Aug 2020 @ 1200 07 Aug 2020 @ 2110 cb Steamboat was really lackluster this afternoon. SV had not moved the small piles of pepples down the SV channel that were from the previous eruption. Play from both vents improved around 1600. Taller more sustained jetting from both vents, a few were vertical, that produced some babbling brooks. Cistern Spring has a VIGOROUS boil and overflowing on all sides.
15456 07 Aug 2020 @ 0900 07 Aug 2020 @ 2000 KarlH Overall a quiet day at Steamboat. The quiet overflow previously reported was the rule of the day, with some activity picking up around 1400 and about every two hours after that. Between 1600 and 1700 there were some minors that started to move a little of the gravel at the top of the runoff channel, but even that remained when the Hoppes left around 2000. Best activity of the day to that point was the last hour, but vertical activity was essentially non existent today.
15422 07 Aug 2020 @ 0620 07 Aug 2020 @ 0740 Suzanne South Vent minors producing light runoff in the channel. Occasional angled thin splashing from North. Nothing voluminous yet.
15420 06 Aug 2020 @ 1500 06 Aug 2020 @ 1700 KarlH Runoff channels dry. I would describe minor activity as quite whispy.
15393 05 Aug 2020 @ 2003 --- cb 2D10H PE. SB platform is completely dry. Some gentle grumbling with some huffing. Cistern Spring is in overflow with a vigorous boil.
15358 04 Aug 2020 @ 0857 --- cb 23H PE. SB is gently steaming. Cistern Spring is empty, no steam (on this chilly morning) no sounds.
15139 01 Aug 2020 @ 1814 01 Aug 2020 @ 1904 cb 2D 17H PE. Water has really NOT come back into the system. Platform is dry! 3 SV 4' spritz. 2 NV 8' wispy, angled jets. All channels + back shoulder, Jabba is DRY! ET is moist. Some very faint grumbling. Cistern Spring is in overflow on all sides with a mediocre boil. It is a opalescent, cloudy, turquoise color
15102 25 Jul 2020 @ 1303 --- cb 1D PE. SB is quiet, just gently steaming. platform dry. Cistern Spring is Drained (pool empty). No water, no sounds, no steam.
15094 24 Jul 2020 @ 1845 --- cb 5H 50M in the eruption. Both vents are still forcefully in steam. NV has a wisp of water/steam mix. NV runoff channel has a nice stream of water flowing to the foot path. SV runoff channel is mostly dry as is the back shoulder and the back runoff channel. Cistern Spring has dropped ~2' below overflow. pool is clear and calm.
15089 23 Jul 2020 @ 1157 --- cb 4D PE. Improved activity from last night. Mostly concerted activity with some NVV w bounce and SV has had some fountaining with babbling brook down its channel. Back shoulder is wet with a trickle of water into the back channel. Fairly consistent runoff at the foot bridge.
15087 22 Jul 2020 @ 1955 --- cb 3D18H15M PE. At noon the SV channel was dry according to a trusted friend. Water came into the SV channel at about 1730 with 10' - 25' splashes from SV. NV 25' - 30' angled jetting. 2000 channel is wet with a trickle of water and lots of debris still on SV channel. 2009 NVV with a bounce and V jet. Back shoulder has a very thin area of moisture. No water in back run off channel. Very thin trickle of water in SV channel at the foot bridge.
15071 21 Jul 2020 @ 1940 --- cb 2D8H PE. No water yet. Platform, channels dry.
15062 21 Jul 2020 @ 0810 --- cb 1D 20.5H PE. Steamboat is gently huffing big billows of steam, no water, channels dry. 41° this morning. Cistern Spring is in overflow. To steamy to see the pool.
15044 20 Jul 2020 @ 0750 20 Jul 2020 @ 0811 bbev 20hrs PE; Heavy steam on cold morning, quiet, with no water seen. Runoff is now dry! It was not dry at 1800 yesterday as reported.
15041 19 Jul 2020 @ 1840 --- cb 7H Into the eruption. SB is in mixed water steam phase. NV mix of steam and water 40' continuously. SV is huffing tall billows of steam also continuously. SV runoff channel is wet with lots of pooling water in low depressions and a thin trickle of water all the way down the main channel to the foot bridge. Cistern Spring's pool has dropped ~2.5' below overflow. Pool is clear and mostly calm with the exception of 1 point of small ping pong ball sized bubbles that occasionally break the surface.
15025 17 Jul 2020 @ 1830 17 Jul 2020 @ 2045 cb SB water levels have improved somewhat from this morning. There is a thin river of constant water at the foot bridge and water in the main channels extending into the delta beyond the bridge. Play is mostly all angled minors from both vents. Some concerted play. Some SV fountaining. NV ~35' - SV ~20'. 1901 stronger CNVSV with a weak babbling brook. 1920 NVV bounce. 1940 NVV bounce. Some better CNVSV from both vents in the 1920 - 2030 hour that was taller and thicker with bounce.
15020 17 Jul 2020 @ 1154 17 Jul 2020 @ 1230 bbev 3D, 16hrs PE; Barely a trickle of water at steerage. Some concerted play, nothing vertical seen. Back shoulder has start of a trickle, but not making it anywhere near far runoff channel. Noticeably quiet with no huffing or rumbling accompanying minor play.
15011 16 Jul 2020 @ 2006 --- udo 3D 0H water levels high everywhere except SB, which was huffing with totally dry runoff channels and not even spritzing. Crater Spring and Root Pool are high and hot. Tantalus hitting 6" or so. Cistern Spring boiling vigorously and overflowing in all directions even filling the left overflow pond. Despite decent breeze H2S odor was often strong.
15009 16 Jul 2020 @ 2004 --- cb 3D PE. SB is very quiet. Just gently steaming. Platform and channels are completely dry. Cistern Spring is in overflow with a very vigorous, blooping boil!
14977 14 Jul 2020 @ 0936 --- cb 13.5H PE. SB is still fotcefully huffing steam. no water in either vent. Cistern Spring water level has dropped ~1' below the inner tube rim. pool is a opalescent blue color and calm.
14975 13 Jul 2020 @ 2038 13 Jul 2020 @ 2210 Ben VL We had left around 1945 as a rainstorm came in. We got a pretty sunset with deep red and gray all around us. Arrived about 2038 with NV bursting dirty water. Wind shifted to the platforms and back away again. We got restarts at 2122, 2128, & 2139. Wind shifted back to the platforms at 2140. Wind shifted back to the restart area just after we walked away. One more restart seen from the dip at 2159. We left shortly after that.
14974 13 Jul 2020 @ 0930 13 Jul 2020 @ 1600 cb SB had some nice concerted minors this morning that had NVV with a SV babbling brook. One at 1219 that had 3 consecutive, back to back, CNVV minors with a SV babbling brook. Nothing much after that and very little consistent water flowing down the SV runoff channel the rest of the afternoon. ** 1700 I went back down to check on SB and still not much water consistently running down SVRO channel, weak minors with hardly any runoff. SB proves me wrong!
14970 13 Jul 2020 @ 0735 13 Jul 2020 @ 0800 bbev 3D, 21hrs PE; Improved from last night, more concerted play with some vert from NV. Better SV runoff. Difficult to see if there is any water coming down back shoulder.
14963 12 Jul 2020 @ 1910 12 Jul 2020 @ 1943 bbev 3D, 8.5 hrs PE; very light SV runoff and minimal play from either vent. Not much change from this morning other than very slight increase in SV runoff IMO. Some better play just as we were leaving, very little bounce.
14959 12 Jul 2020 @ 0736 12 Jul 2020 @ 0803 bbev 2D, 21 hrs PE; Concerted minor as l walked up, with NV jetting 20'. Very light, steady runoff in SV and on back shoulder. Very steamy on a cool morning. Fairly quiet with an occasional huff proceeding a wispy NV minor. CS is high, water level just over scalloped edges. Trickle of runoff at steerage which is just clearing the milky water in trough. Here we go again!
14956 11 Jul 2020 @ 1830 --- cb 2D 17H 45m. SB is still just gently steaming with a low grumbling. 1837 wispy and airy NV 5' jet. All channels, Jabba, ET are dry.
14944 11 Jul 2020 @ 0920 --- cb 1D 22.5H PE. SB is huffing billows of steam from both vents. SV has tiny bit of water in it, just enough to dampen ET. All other areas, channels are dry. Cistern Spring is in overflow in all directions.
14929 10 Jul 2020 @ 1854 --- cb 1D 8H PE. SB is steaming. 1 big SV huff of steam at 1856, but no water, dry channels. Cistern Spring ~ 1.5' below the rim of the inner tube with a vigorous boil.
14923 10 Jul 2020 @ 1210 --- bbev 1D, 1hr PE; SB quiet and steamy. Trough empty of gravel except in channel just under bridge. CS appears mostly drained. Water barely visible from lower boardwalk. No steam no sound. What water that is visible appears clear, light blue.
14917 09 Jul 2020 @ 1048 --- Kelsey (Kelsie Frey) I was there and recorded the whole thing. Will be putting it on YouTube.
14912 08 Jul 2020 @ 0630 08 Jul 2020 @ 2250 Ben VL Activity started out poorer than yesterday evening. Picked up after noon. Several nice minors throughout the afternoon with sustained, thick and sometimes tall vertical out of NV and 4-5 runoff out of SV. Large event at 2041 with heavy sustained NV vertical and 5 runoff.
14906 07 Jul 2020 @ 1650 07 Jul 2020 @ 1734 cb 4D 3H PE. SB is much more active this afternoon than yesterday afternoon. Nice concerted minors. NV 40'+ & SV 25'+. SV channel had some babbling brooks. 1 CNVV at 1700 that had some nice volume to it. The back shoulder is mostly dry with a few fingers of moistness at the top. Cistern Spring is lower (by a hair) than yesterday and it has a average boil. it is lapping at the scalloped edges.
14897 06 Jul 2020 @ 1915 06 Jul 2020 @ 1950 cb 3D 5H PE. SB has improved slightly (SLIGHTLY) from this morning. Minors are sporadic, wispy and airy. NV to 15' and they are mostly steam with a thin vail of water. SV 4' splashes. Jabba, ET, Back shoulder are all dry. SV runoff channel has a thin, barely damp finger of runoff that only reaches 10 yards down from SV. From steerage looking up toward SB the channel is completely dry. Cistern Spring pool is high and overflowing in all directions. It has a vigorous blupping boil.
14893 06 Jul 2020 @ 0736 06 Jul 2020 @ 0747 bbev 2D, 17 hrs PE; Soft deep rumble, very steamy. Both runoff channels dry. Back shoulder dry. Spritzy jetting from NV. One small splash from SV during short observation .
14890 05 Jul 2020 @ 1815 --- cb 2D 4H PE. SB's platform is dry. Water has not come back into Steamboat yet. All channels are dry, as is ET and Jabba. SB is still gently steaming. Cistern Spring's pool is high, over the scalloped edges, and is overflowing on all sides. It has a vigorous boil and the water is clear and blue.
14882 05 Jul 2020 @ 0745 --- bbev 1D, 17.5 hrs PE; Quiet and steamy, no water in either channel or on shoulder. CS in overflow, barely covering scalloped edges, and trickling into muddy pool. Trough and channel at steerage almost entirely cleared of gravel.
14869 04 Jul 2020 @ 0952 --- cb 19H 40M PE. SB platform is guiet and dry with the exception of some pooling from the rainstorm last night. Some bubblers in the NV runoff channel are active as observed from the middle platform. Cistern Spring's pool has dropped about 5' - 6' below the inner tube rim. It has a 6" bathtub ring above the water level. Water is just at the entrance to "the cave" on the south side. color is a milky blue. The trough is mostly clear of debris. The channel is half full (empty) of small rocks.
14862 02 Jul 2020 @ 1548 02 Jul 2020 @ 2002 bhoppe Activity waxed and waned throughout the afternoon and evening. Push from 1607-1642 with a lot of NV vertical and good runoff from SV. Lull until next push at 1911. Concerted minor with good bounce and runoff at 1919. Additional push at 1954 very wide and vertical. Still some gravel hanging on in the runoff channel waiting to be washed into the Trough. Trough still somewhat clear of gravel with wires visible.
14858 02 Jul 2020 @ 1530 --- Graham 3d14h PE. Some nice water and some vertical. Runoff from south is not as strong as the day before last eruption.
14848 02 Jul 2020 @ 0749 02 Jul 2020 @ 0819 bbev 3D, 6hrs PE; Both vents active, NV jetting 30' with slight "bounce". SV more voluminous, approaching vertical, with light, steady runoff. Back shoulder has moderate runoff with little water making it into far channel. CS pool is high, lapping over scalloped edges, with light dribble into muddy pool. Moderate boil. Trough is mostly clear of gravel with both wires exposed. Nice NV with some bounce as l left.
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.
EntrySourceLinkComment
26 Sep 2020 @ 1035 JSJ https://www.youtube.com/watch?v=CNWrKfrdg-I Short video showing Steamboat Geyser's 9/26/2020 major eruption.
26 Sep 2020 @ 1035 JSJ https://www.flickr.com/photos/jsjgeology/50387548761 Tantalus Creek discharge graph showing Steamboat Geyser's 10:35 AM major eruption on 26 September 2020.
26 Sep 2020 @ 1035 JSJ https://www.flickr.com/photos/jsjgeology/50387038622 Norris Junction seismogram showing Steamboat Geyser's 10:35 AM major eruption on 26 September 2020.
26 Sep 2020 @ 1035 JSJ https://www.flickr.com/photos/jsjgeology/50386163658 Norris Museum seismogram showing Steamboat Geyser's 10:35 AM major eruption on 26 September 2020.
09 Sep 2020 @ 1500 JSJ https://www.youtube.com/watch?v=lR1QxNNEXPI 1-minute video showing Steamboat Geyser's 9 September 2020 major eruption.
09 Sep 2020 @ 1500 JSJ https://www.youtube.com/watch?v=Kp5cmCTYOkw 1-minute video showing the start of Steamboat Geyser's 9 September 2020 major eruption.
03 Aug 2020 @ 0957 Tara https://youtu.be/R1ZWDeojrz8 Video of eruption taken by Tara Cross.
01 Sep 2020 @ 2034 Tara https://youtu.be/txWhBbiJ4eg Video of eruption taken by Tara Cross.
16 Sep 2020 @ 1144 JSJ https://www.youtube.com/watch?v=CJBvnGN0TUA 9/16/2020 Steamboat video showing eruption & pause & restart.
16 Sep 2020 @ 1144 JSJ https://www.youtube.com/watch?v=BvMstp0WfYI Video showing the start of Steamboat Geyser's 16 September 2020 major eruption.
16 Sep 2020 @ 1144 JSJ https://www.flickr.com/photos/jsjgeology/50350821912 Tantalus Creek discharge graph showing Steamboat Geyser's 11:44 AM major eruption on 16 September 2020.
16 Sep 2020 @ 1144 JSJ https://www.flickr.com/photos/jsjgeology/50349688473 Norris Junction seismogram showing Steamboat Geyser's 11:44 AM major eruption on 16 September 2020.
16 Sep 2020 @ 1144 JSJ https://www.flickr.com/photos/jsjgeology/50350387966 Norris Museum seismogram showing Steamboat Geyser's 11:44 AM major eruption on 16 September 2020.
09 Sep 2020 @ 1500 JSJ https://www.youtube.com/watch?v=UURdOQyoANQ 7 minute video showing Steamboat Geyser's mid-afternoon major eruption on 9 September 2020.
09 Sep 2020 @ 1500 JSJ https://www.flickr.com/photos/jsjgeology/50325928247 Tantalus Creek discharge graph showing Steamboat Geyser's mid-afternoon major eruption on 9 September 2020.
09 Sep 2020 @ 1500 JSJ https://www.flickr.com/photos/jsjgeology/50325111141 Norris Museum seismogram showing Steamboat Geyser's mid-afternoon major eruption on 9 September 2020.
26 Aug 2020 @ 1736 JSJ https://www.youtube.com/watch?v=9BOTUoaiAzo 6.5 minute video showing Steamboat Geyser's 26 August 2020 major eruption.
26 Aug 2020 @ 1736 JSJ https://www.youtube.com/watch?v=LedKIoA0jG8 Short video showing Steamboat Geyser's 26 August 2020 major eruption.
01 Sep 2020 @ 2034 JSJ https://www.flickr.com/photos/jsjgeology/50297878001 Tantalus Creek discharge graph showing Steamboat Geyser's 8:34 PM major eruption on 1 September 2020.
01 Sep 2020 @ 2034 JSJ https://www.flickr.com/photos/jsjgeology/50296840606 Norris Museum seismogram showing Steamboat Geyser's 8:34 PM major eruption on 1 September 2020.
Baseline does not exist.


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