Last Known Eruption
13d 1h 8m ago

Latest Eruptions

Eruption DurationInterval
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
07 Dec 1982 @ 2000 A24d 10h 0m
13 Nov 1982 @ 1000 A15d 11h 0m
29 Oct 1982 @ 0000 A19d 4h 0m
09 Oct 1982 @ 2000 A19d 9h 23m
20 Sep 1982 @ 103715m 13d 23h 1m
06 Sep 1982 @ 113633d 2h 33m
04 Aug 1982 @ 0903 maj43d 6h 51m
22 Jun 1982 @ 021213d 18h 22m
08 Jun 1982 @ 07506d 20h 36m
01 Jun 1982 @ 111411d 23h 20m
20 May 1982 @ 1154 maj10d 18h 54m
09 May 1982 @ 17004d 19h 43m
04 May 1982 @ 21176d 9h 17m
28 Apr 1982 @ 1200 A4d 6h 43m
24 Apr 1982 @ 04178d 4h 17m
16 Apr 1982 @ 0000 A26d 0m
21 Mar 1982 @ 0000 A10d 15h 0m
10 Mar 1982 @ 0900 A7d 9h 0m
03 Mar 1982 @ 0000 A9d 5h 0m
21 Feb 1982 @ 1900 A10d 19h 0m
11 Feb 1982 @ 0000 A1982 log28d 7h 0m
13 Jan 1982 @ 1700 A
13 Jan 1982 @ 1700 A2y 210d 2h 34m
18 Jun 1979 @ 1526299d 7h 23m
23 Aug 1978 @ 0803 maj147d 20h 33m
28 Mar 1978 @ 10309y 216d 9h 20m
26 Aug 1968 @ 021083d 19h 5m
03 Jun 1968 @ 070541d 17h 27m
22 Apr 1968 @ 1238311d 6h 58m
16 Jun 1967 @ 064028d 6h 40m
19 May 1967 @ 0000 A11d 0m
08 May 1967 @ 0000 A11d 23h 0m
26 Apr 1967 @ 0000 A37d 0m
20 Mar 1967 @ 0000 ?144d 2h 10m
26 Oct 1966 @ 225077d 3h 14m
10 Aug 1966 @ 193652d 8h 54m
19 Jun 1966 @ 104289d 9h 42m
22 Mar 1966 @ 000017d 6h 0m
04 Mar 1966 @ 1800 A27d 2h 39m
05 Feb 1966 @ 152177d 15h 21m
20 Nov 1965 @ 000069d 3h 11m
11 Sep 1965 @ 2149 ns13d 21h 34m
29 Aug 1965 @ 001549d 2h 45m
10 Jul 1965 @ 213027d 1h 50m
13 Jun 1965 @ 19409d 10h 12m
04 Jun 1965 @ 09288d 22h 13m
26 May 1965 @ 11157d 15h 50m
18 May 1965 @ 192510d 22h 25m
07 May 1965 @ 2100 A9d 1h 0m
28 Apr 1965 @ 2000 A14d 3h 0m
14 Apr 1965 @ 160010d 16h 0m
04 Apr 1965 @ 0000 A8d 0m
27 Mar 1965 @ 0000 A14d 0m
13 Mar 1965 @ 0000 A12d 16h 0m
28 Feb 1965 @ 0800 A10d 0m
18 Feb 1965 @ 0800 A16d 8h 0m
02 Feb 1965 @ 0000 A18d 20h 0m

Interval Statistics

Interval Count99
Min4d 6h 43m
Max9y 216d 9h 20m
Mean197d 6h 52m
Median20d 20h 42m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
9242 18 Jul 2018 @ 1600 18 Jul 2018 @ 2030 cb 1 NV vertical splash @ 1727
9241 18 Jul 2018 @ 1700 --- udo No Steamboat yet as of 1700 when I left.
9238 17 Jul 2018 @ 0645 17 Jul 2018 @ 1930 Suzanne Percent of minors starting from both vents (simultaneous) increased from 48% from 0800 to 1200, to 63% from 1220 to 1700. However, the volume in the North Vent was lacking. Only 2 good vertical surges seen from North Vent: at 0659 and 1344. South Vent had good volume for most of the morning and early afternoon. Activity waned later in the afternoon and evening. From 1605 to 1704 only 40 minors were tallied: 62.5% simultaneous, but only 6 had south jetting and 6 had heavy volume from North.
9237 17 Jul 2018 @ 1630 --- udo No eruption as of 1630 when I left. Although improved from yesterday the activity had more pauses and poor volume than what I would like to see by now. Trough is dredged to bedrock. Detailed notes were taken by others perhaps to be posted later.
9224 16 Jul 2018 @ 1000 16 Jul 2018 @ 2000 cb still is SV dominant but as the day progressed we saw more NV activity w concerted and occasional NV vertical play. I'm going to give you the data I collected from 1605-1805. S-12. SJ-8. N-7. CNS-17. HOLY S**T-1. WHOOHOO-1. TOTAL-46. by 1920 we are seeing increased concerted and NV activity. 1929 nice CNVV. (concerted NV vertical)
9215 16 Jul 2018 @ 0700 16 Jul 2018 @ 1130 Suzanne General observations: strong activity from south vent with occasional vertical jetting, but very little activity from the north vent. Only 2 vertical plays from the north vent during the 4.5 hour time period. No runoff from north channel. South vent jetting put out babbling brook. Trough is slowly being dredged.
9214 16 Jul 2018 @ 1017 16 Jul 2018 @ 1116 Suzanne Initiating vent tally: North 7, North heavy 1, South 21, South with jetting 8, Simultaneous 11. Total: 48 minors.
9213 16 Jul 2018 @ 0917 16 Jul 2018 @ 1016 Suzanne Initiating vent tally: North 12, South 26, South with jetting 9, Simultaneous 9, Simultaneous with South jetting 2. Total: 58 minors.
9212 16 Jul 2018 @ 0817 16 Jul 2018 @ 0916 Suzanne Initiating vent tally: North 17, South 21, South with jetting 5, Simultaneous 15. Total: 58 minors.
9211 16 Jul 2018 @ 0717 16 Jul 2018 @ 0816 Suzanne Initiating vent tally: North 11, South 23, South with jetting 6, Simultaneous 8. Total: 48 minors.
9202 15 Jul 2018 @ 1825 15 Jul 2018 @ 1950 cb walked up to a nice 20' jet of water from NV. SV 6 - 8' jets. Some concerted play! SV Platform is wet as is its runoff channel. (VR) Visitor showed me a video from 1700 that shows a nice babbling brook runoff in SV channel. Some nice rumbling sounds. More play coming from SV than NV. SV water has reach 10 - 15' beyond the bridge with dampened runoff channel. Trough has not been dredged yet. (see * below) Cistern Spring still high, clear, blue & overflowing w a 1.5 diameter weak boil. Overflow is starting to reach the muddy pool by the boardwalk. Vixen platform & runoff channel is wet, water pooled in its tube but I did not see an eruption in the 15 minutes I observed. Pearl still has a yellow hue. Porkchop water is back up to the rim of the pool. Green dragon runoff is again clear however the runoff channels are coated in brown. Yellow funnel has no visible water but I can hear deep grumbling with splashing down deep. Echinus water level is good with nice runoff and a weak 2 vent boil. (hum!) Crater Spring water is LOW and murky brown/gray. Emerald Spring is the same, clear, green with weak convection waves. * On my way past Steamboats bridge the trough has been dredged a little bit!
9185 14 Jul 2018 @ 2005 14 Jul 2018 @ 2032 cb Quietly steaming. No water from either vent and no gurgling sounds tonight. All runoff channels are dry. Cistern Spring is high, blue, clear and in overflow. It has a 2 vent boil about 2' in diameter. Emerald Spring is clear, green with some small convection waves in the "thumb" closest to the boardwalk and overflowing.
9180 14 Jul 2018 @ 0643 14 Jul 2018 @ 0706 cb Emerald spring is clear, quiet. Steamboat NV is starting to have occasional jets of water 3 - 4' but is mostly huffing steam with deep gurgling sounds. No water from SV yet. Cistern Spring pool is high and overflowing from all sides.
9175 13 Jul 2018 @ 1305 13 Jul 2018 @ 1324 bbev Steamboat unchanged. Cister has risen considerably since this morning and is now 6-8" below overflow with somewhat less boiling in center.
9174 13 Jul 2018 @ 0738 13 Jul 2018 @ 0752 bbev Still quietly steaming, no water seen during my time there. No real change since 7/10/18 report. Cistern Springs has come up after a 2 day "stall", and is now 16-18" below overflow and boiling in center. Unsure if Cistern ever did fully drain.
9160 12 Jul 2018 @ 1100 --- cb lightly steaming. no water. all runoffs dry. VERY quiet. Cistern is still at the same level as yesterday. approximately 35" down from the rim. it is not as yellow as yesterday but has a yellow/blue hue to the pool.
9142 11 Jul 2018 @ 1841 --- cb Steamboat is VERY quiet with light steam. All run off channels are dry. Cistern Spring fill is at the same level as this morning (at the end of the thick log) and is the same yellowish color with a very aggressive 2 vent boil. Boil at times reaches 6 - 8" in height. Debris in Cisterns pool are becoming coated in yellow.
9134 11 Jul 2018 @ 1040 11 Jul 2018 @ 1050 Tara Very quiet, gently steaming. Occasional weak pushes of steam but no water seen. Both channels completely dry.
9150 10 Jul 2018 @ 1205 10 Jul 2018 @ 1215 bbev Very quietly steaming with no viable water. SV runoff is dry from bridge up to vent. Cistern is down to edge of "tube". Emerald remains crystal clear, no boil or bubble.
9106 10 Jul 2018 @ 0925 --- cb steamboat is gently huffing steam from both vents. no water. Cistern is down approximately 6" from last nights observation. Below the crossed logs 4". Above the inner tube. Blue, clear with small bubbles. Gravel in the trough. emerald is beautifully clear, green and quiet with occasional convection ribbles.
9101 10 Jul 2018 @ 0854 10 Jul 2018 @ 0909 udo Steaming quietly with a few audible houghs. No jetting. Gravel pit is full and wet from small trickle. Boardwalks around platform also wet probably from steam that condensed into drizzle last night.
9088 09 Jul 2018 @ 1925 09 Jul 2018 @ 2002 bbev Mixed steam/water from both vents. NV 10-15' and SV appears more steam than water. Emerald Springs was crystal clear, overflowing, with convection but no boiling or bubbles. Cistern is clear, lightly bubbling, and appears to have dropped only a few inches from yesterday evening, down maybe 36" below overflow. still above inner "tube". Steady, light runoff at bridge, most all the channels below the bridge are damp or running water. We would guess that there had been increased flow earlier.
9081 09 Jul 2018 @ 1150 --- Polly 0900 note of observation this morning shows what appears to be Steamboat still in mixed water/steam phase which will lengthen the interval at least somewhat.
9078 09 Jul 2018 @ 0930 --- Polly Looking at graphs and on-site reports, there is a possibility that Steamboat may have a short interval. (Looking at historic Steamboat intervals, in 1964 it did one that was maybe less than 4 days. Just lists dates - no times - May 14 then May 17. Next shortest was 4 days 6 hours 43 minutes in 1982.)
9080 09 Jul 2018 @ 0900 --- bhoppe Nonstop activity from both vents. NV was constant emitting water/steam to 30'. SV in steam. Steady trickle of runoff.
9071 08 Jul 2018 @ 1934 08 Jul 2018 @ 2014 bbev Impressive, continuous jetting from both vents, NV 20-60'+ and SV 10-20' vertically and towards the north. Cistern Springs down 30-32" (almost to bottom of log), Clear enough to see rim of inner "tube" about 1' below surface. Some bubbling in center. Steady runoff at bridge, enough to nearly crest the shoulder of center rock, and put a trickle down far right side of the channel, but not enough to disturb the gravel that has re- accumulated in the trough. Stronger flow in SV runoff every 2-3 min. Emerald Springs quiet, overflowing, with some convection over vents but is no longer boiling.
9054 07 Jul 2018 @ 1247 --- bbev Steady steam, fairly quiet, SV runoff dry. Cistern Springs down from this morning, 16-18" below overflow, very clear. Emerald spring is not boiling at all, overflowing, cloudy, and occasional bubbling. .
9053 07 Jul 2018 @ 0734 07 Jul 2018 @ 0742 bbev Forceful steam from both vents, fairly quiet, little if any water. There is a steady flow of milky water in both runoff channels at the bridge, Cistern Springs is quiet and surprisingly clear, 14-16" below overflow. Visitor reports water jetting "100 ft". at 0900
9043 06 Jul 2018 @ 0718 06 Jul 2018 @ 1336 udo Perhaps 5% of concerted minors are vertical. None are producing a "wall" of white. Runoff is more than a trickle but not really impressive. 6-15 foot surges from SV are barely sending water over middle rock. NV 15-40 feet. Dredged area of gravel pit at bridge is unchanged from last night, still a foot x 3 feet wide. Vertical concerted splashes are smaller, lack height and volume. SV splash zone is running off into channel. Frequency of concerted minors increased from 0802-0816 causing audible gurgling in runoff. Babbling brook at 0956, 1100, 1116, 1241, 1315, 1327, 1329, 1334, 1336. Good series of minors with large concerted minors at 1243, 1245 put out significant runoff. Another at 1252 produced less. 1254 excellent surge. Subsequent large surges listed above as babbling brooks starting at 1315. Left side of SV runoff channel was wet. Gravel pit center area dredged down to rock and widened a bit.
9040 05 Jul 2018 @ 1927 05 Jul 2018 @ 1948 bbev 1929 nice vertical minor from NV, 30+', concerted w SV 10-15'. Not much water down runoff . Deep rumble. Nothing really new. 3x1' area of gravel has been dredged exposing a portion of the bottom of trough at bridge. Cistern remains right at overflow, muddy pool SE of crater all but dried up. Nice vertical play from North vent as I was leaving. Emerald continues to boil, cloudy. Congress at same level as this morning. Porcelain at sunset still very active, but less than a week ago.
9039 05 Jul 2018 @ 1201 05 Jul 2018 @ 1227 bbev Steamboat still having nice concerted minors, with SV pushing out increased water, enough to move a remarkable amount of gravel from the trough at the bottom of its runoff channel. Gravel is now 10-13" wide along most of that area and bottom of trough becoming visible (water 8-10" deep). As I walked up to bridge, saw strong push that came over "center rock"', which is largest volume seen this interval. Morning walk to work showed first real change noticed in. almost 2 weeks Porcelain Basin still very active, but appears drier. Congress pool down 4-6" from yesterday, still boiling vigorously. Emerald Springs and Monarch runoff appears to have increased. Monarch geyser crater has clearer water and much fuller. Corperal boiling, runoff wet. Cistern did not look any different, boiling steadily, just at overflow. Emerald Springs is still cloudy but with noticeably less boiling.
8998 03 Jul 2018 @ 0900 --- roymarino Growing activity from about 7am until 9:30am. South vent had surged about 15 feet high and there were some vertical bursts from north vent about every 10 minutes. Under the foot bridge was not dredged but more water heading down the channel as we left.
8995 02 Jul 2018 @ 1825 02 Jul 2018 @ 1900 KarlH First time looking at Steamboat so take for what it is worth. NV mostly angled. A few splashes and surges that were more vertical. SV runoff was mostly a trickle. The best vertical surge in NV was coupled with stronger bursting in SV that sent a small cascade down the runoff that was audible at the bottom. Will share photos and video of some of the activity with those more knowledgeable tomorrow.
8977 01 Jul 2018 @ 2115 01 Jul 2018 @ 2130 bbev nothing really new to report. South vent still steady streaming water. Trough at the bridge has some new gravel but still full. Emerald Spring softly boiling somewhat less than last obsevation. Cistern Springs remains about the same level.
8953 30 Jun 2018 @ 0725 30 Jun 2018 @ 0754 bbev NV continues 30+' 70-80% concerted minors w some vertical. SV still drooling some water but not enough to disturb any more gravel at the bottom of its runoff channel at the bridge. Trickle of water in NV runoff, much less than yesterday. Emerald at steady boil, slight increase from yesterday.
8944 29 Jun 2018 @ 1748 29 Jun 2018 @ 1857 cb * Note: It has been raining off and on most of the day. Steamboat NV having strong concerted minors, w some impressive vertical and SV is stronger, gaining more height and water output, BUT still not putting much water down its runoff channel. The trough is not dredged but there are a few SMALL areas where the small debris have been moved. Catch basins still have small debris in them. Cistern Spring water level is a tad fuller and sending convection waves into the runoff catch basins on the edge of the pool. Still blue/green and fairly clear. Emerald Spring still turpid, fairly clear green and in overflow! Putting out more water than I've seen since the 18th. (*Note the weather!)
8947 29 Jun 2018 @ 1340 --- bbev No real change this afternoon from observations from past few days other than slight increase in SV runoff, and steady, milky runoff in both NV channels, possibly due to rain and hail-sized hail. Trough remains full with slightly less gravel. Emerald continues to boil, MAYBE somewhat less vigorously.
8920 28 Jun 2018 @ 0710 --- cb quick check this morning and NV strong, SV weak, the trough and catch basins have not been dredged. Go Giant!
8912 27 Jun 2018 @ 1800 27 Jun 2018 @ 1916 cb Steamboat is having some Concerted play but SV is weak. Cistern is NOT in overflow! The pool is low and green/blue in color. The water level in it is below the scalloped rim and the small scalloped "islands" along the edge are well exposed. (think low Grand pool) Cistern Spring center boil is vigorous and sending out large convection waves that will put water through small cracks and depressions along the rim. Especially on the North (? side toward Veteran). SV run off channel has not been dredged nor have the small catch basins between middle rock and the bridge. Vixen is back to more regular play. The steam vent by Vixen is quieter. Pearl has bubbles breaking the surface. Pork chop is down about 4" from the rim. Green dragon is putting out chocolate brown runoff. Yellow funnel is way low, muddy brown and turbulent. Blue mud steam vents water/mud is not visable. Crater Spring water level is low as is Echinus. Echinus run off channel is dry in many areas. This back basin is much the same as last night except for Vixen. sorry for the long note! Forgot about Emerald. . . cuz it is the same! Boiling in the East thumb, green and fairly clear.
8901 27 Jun 2018 @ 0900 27 Jun 2018 @ 0945 billwarnock More active than yesterday. Much concerted activity with a number of nice vertical surges from NV, but not sustained. There is steady runoff from SV, and shortly after 900 and at 0931 large surges from SV caused short heavy overflow which rolled small rocks down the channel. Did not check berm. Cistern still overflowing.
8902 26 Jun 2018 @ 2030 --- cb Trough is not dredged. There are gravelly pepples in all of the SV catch basins from the "middle rock" to the bridge.
8891 26 Jun 2018 @ 1020 26 Jun 2018 @ 1100 billwarnock Barbara Lasseter said it is more active than yesterday. NV is going 10-20 feet with one vertical surge 40-50 feet while I was there. SV smaller but often concerted. At 1032 SV had a big surge over lip of vent and runoff that set some rocks rolling down the channel. Brief but spectacular. Cistern boiling and in overflow, but Barbara said less strong than yesterday. She doesn't expect it today, but it's a geyser.
8890 26 Jun 2018 @ 0801 26 Jun 2018 @ 0900 cb sorry for the mistake. I logged my note as a eruption! my bad! Steamboat pretty much the same NV and SV having concerted minors. NV have tall angled jetting w some vertical. SV run off has increased slightly as observed from bridge. Trough not dredged. Cistern is still low. Emerald is still greenŕclear and still turbulent. 0800 - 0900.
8887 25 Jun 2018 @ 1217 25 Jun 2018 @ 1218 Dave from B Ditto carol’s observation from earlier today
8868 25 Jun 2018 @ 0915 25 Jun 2018 @ 0945 bbev Nothing has changed at Steamboat. NV 25 - 35 FT with some vertical. SV drooling a steady stream of water. Trough has not been dredged.
8859 24 Jun 2018 @ 1944 24 Jun 2018 @ 2006 cb Nothing really has changed since this morning. Run off channel has not been dredged yet. Cistern Spring water levels have dropped so that scalloped islands and features are visable. 1 - 2". More pronounced boil also. Emerald has increased boil in existing areas with a few more new areas on the west side of the run off channel.
8857 24 Jun 2018 @ 1030 24 Jun 2018 @ 1300 Janet White Mostly angled jets. Between 1245 and 1300 there was an increase in rumbling and some vertical water.
8855 24 Jun 2018 @ 0625 24 Jun 2018 @ 0700 bbev Steamboat appears unchanged from last night in the brief time we were there. NV continued to be having forceful minors, mostly without SV, which was "drooling" a steady, light stream. Trough at bottom of runoff still full of gravel.
8854 23 Jun 2018 @ 1300 23 Jun 2018 @ 2110 Tara No eruption as of 2110. Steady improvement of runoff in afternoon leading to minors that put water over "middle rock" at 1712, 1848, and 1901. These minors also had good height and Granding in North Vent, but no significant height or vertical play in South Vent.
8852 23 Jun 2018 @ 1400 23 Jun 2018 @ 2020 bbev Appears to have improved some from this morning as far as runoff from SV and NV activity. Observed "pooling" in the SV and continuous (more than a trickle) runoff at the bridge for first time. Trough at bottom of SV runoff remains full of gravel. NV 25-30+ feet with regular vertical play. SV still not putting out water as it did previous to past eruptions. 1857, first big concerted, sustained (5+ sec) minor, seen by this writer, that put a substantial amount of water, down SV runoff. (quiet babbling brook).1900 fair runoff from SV pushing gravel down runoff. 1949, NV continues to have percussive, vertical minors, 25-30+ ft, seldom in concert with SV. No further strong pushes down SV runoff. Cistern is vigorously boiling 6-8" at middle of pool, barely overflowing on east side of pool
8851 23 Jun 2018 @ 1409 23 Jun 2018 @ 1613 udo 50-60% concerted minors with NV to max 30 feet, SV to 6. Runoff at bridge is audibly babbling at times and carrying small gravell.
8845 22 Jun 2018 @ 1659 --- Archer Series of concerted jets with the north vent reaching 20-25 feet; some vertical play. South vent had heavier water that put water down the runoff channel - better than the trickles observed all day, but not at the level of previously observed minors for past intervals.
8843 22 Jun 2018 @ 1100 22 Jun 2018 @ 1330 LynnS When I arrived people indicated north had been having frequent vertical activity accompanied by splashing from south, but no runoff from south. I apparently arrived near the end of that “energy surge.” Just prior to my departure, south vent had one splash with enough volume that put a tiny trickle of water over the lip and into the runoff channel, the only trickle I saw or heard about.
8841 22 Jun 2018 @ 0600 22 Jun 2018 @ 0630 Choward Periodic angled jets from north to 15 feet, some infrequent splashes from south to 4-6 feet; not enough water from south to put even a trickle across the lip down the runoff channel
8839 21 Jun 2018 @ 0630 21 Jun 2018 @ 1745 User34 Steamboat started out the day with 10-20 foot from North, sometimes joined by weak splashing from South with little to no runoff. Progressed steadily through the morning with stronger and heavier play from North, with common vertical splashes to ~15, then stagnated until around 1700, when minors increased in density and South started putting a trickle down the runoff.
8831 21 Jun 2018 @ 0825 21 Jun 2018 @ 0900 cb Steamboat activity has slightly increased from last night. A tad bit more water in SC. (2 MINOR trickles!) NV occasional jetting 10 - 20'. SV even fewer but it is producing some water. Emerald still boiling but has obviously increased in temps as it is so hot today i can't see into it through the steam. I can hear it boil. Cistern is the same, very steamy and hard to see into the pool beyond the steam. (hot). see what the day brings!
8824 20 Jun 2018 @ 1915 20 Jun 2018 @ 2015 udo Nearly all are thin individual minors. One concerted white water vertical was seen. NV max 20 feet. SV max 5 feet. Nothing to get excited about yet. It is making progress however. Mosquitoes are ravenous.
8823 20 Jun 2018 @ 1817 20 Jun 2018 @ 1945 mdschwarz Per Carol: Minors markedly increased in height and strength starting at 1817, South Vent still weak but starting to put water down runoff channel (but not a lot). Occasional vertical play from North Vent. "Puff ball" surge from North at 1936
8822 20 Jun 2018 @ 1505 20 Jun 2018 @ 1530 LynnS Weak, periodic angled jetting 4 to 6 feet high from north vent; no eruptive activity from south vent; no runoff from the jetting
8808 20 Jun 2018 @ 1100 --- Polly In looking at the graphs, Steamboat seems to be recovering slowly. We have had a lot of rain the last couple of days, but not sure how much affect that has had on the graph. Possible disturbance??? Also, there are other signs in the basin, as noted by other Gazers’ on-site observations, that seem to show possible disturbance.
8811 20 Jun 2018 @ 0910 20 Jun 2018 @ 1016 cb Steamboat is gently steaming from both vents. With occasional spritz out of NV. Much less activity from SV. Nothing vertical. South run off channel is wet down past the bridge approximately 20 yards. Cistern Spring is a bit lower than yesterday. Still in overflow just decreased amount. Vigorous boil.
8812 20 Jun 2018 @ 0800 20 Jun 2018 @ 0915 mdschwarz Frequent wispy angled splashes from North Vent, mostly 5-10 feet. Three barely-above-the-surface splashes from South Vent over 75 minutes.
8794 19 Jun 2018 @ 1720 19 Jun 2018 @ 1916 cb Still steaming with occasional angled splashing out NV to 4 ft. 1 small splash out of SV. I did see 2 faint splashes (aprox. 5 ft) that were angled toward the east from NV. Platform is fairly quiet with a faint rumble. Cistern still in overflow with a 2.5' diameter boil. Emerald Spring has a few more areas that are bubbling. Echinus water is high with more overflow and slightly increased boil. All the features from Echinus to Pearl have increased boiling.
8776 19 Jun 2018 @ 0656 --- cb water has returned to Steamboat. occasional 4' jets from NV. SV just steam. Cistern Spring is in overflow with a 2' diameter boil in the center. Emerald Spring is still clear and green in color but continues to have a 4 vent boil in the southeast thumb of the pool + a small boil to the right. Steamvalve Spring water is high and fairly clear.
8772 18 Jun 2018 @ 1925 18 Jun 2018 @ 1935 Tara Huffing steam from both vents. Saw 2 weak splashes from North Vent in 10 minutes, no water from South.
8767 18 Jun 2018 @ 1815 18 Jun 2018 @ 1825 udo Steaming with periodic huffing. No water.
8766 18 Jun 2018 @ 1715 --- cb no water yet.
8755 18 Jun 2018 @ 0930 --- bbev Steamy, occasional huffing from both vents. No water seen from either vent.
8753 17 Jun 2018 @ 1835 17 Jun 2018 @ 1851 bbev Steamboat quietly steaming. Cistern Spring is boiling vigorously, murky and refilling, 3' below rim of inner "tube".
8744 17 Jun 2018 @ 0940 17 Jun 2018 @ 1009 cb Very quiet. gently steaming. No water. Emerald Spring has 3 areas that have a boil in the Eastern thumb ( closest to the boardwalk) and is still clear and green. Cistern Spring has almost drained. still a bit of water in the bottom of the pool.
8726 16 Jun 2018 @ 1312 16 Jun 2018 @ 1419 bbev Strong, concerted water from both vents, NV jetting 40-60', more angled than this morning, but with some dirty, vertical splashing 10-15' in the "saddle". SV continuous, dirty, 10-20'. jetting vertically and to the north. Light to moderate runoff from SV, slight trickle from NV. Cistern 16-18' (intersection of the two logs) below overflow. Water cleaned up some, but energy remained constant during entire hour we were there
8711 16 Jun 2018 @ 0735 --- cb Steamboat is much quieter than last night but still has a roar! Mix of steam water. NV is jetting (vertically) water 25 - 35ft. SV has a light spray 10 - 20ft. Considerable runoff in the North runoff channel and South run off channel has a light but steady run off. Cistern Spring is down 12 - 14 inches with just A VERY small boil in the middle. Pool is fairly clear and Blue green in color.
8708 15 Jun 2018 @ 2055 15 Jun 2018 @ 2130 cb Steamboat is in loud roaring steam phase. Cistern Spring is down 6 - 8 inches from the rim.
8710 15 Jun 2018 @ 2000 15 Jun 2018 @ 2030 Tara Steamboat in roaring steam phase, no jetting water seen during this time.
8770 15 Jun 2018 @ 1855 15 Jun 2018 @ 2028 Ben VL Had been driving all day and saw the steam plume from the road. Arrived at the lower platform at 1855 with Steamboat in steam phase with small sprays of water mixed in from south vent, and a little from north as well. Steam phase was roaring, but not all that loud. 100% steam when I left at 2028. Cistern was down maybe an inch from the rim, and had dropped ever so slightly by the time I left with a very slight one vent boil.
8757 15 Jun 2018 @ 1800 --- Polly The YVO temperature graphs for individual geysers seem to show that the Norris Basin “weekly” cycle has shortened from a seven day cycle to six days. Also, it appears that Steamboat had become out of sync with the Norris cycle. (For the eruption on June 4, for example, Steamboat made several attempts over the period of a couple of days to erupt.). It seemed logical to assume that Steamboat would either have a short interval or an extra long one to get back in sync.
8698 15 Jun 2018 @ 1638 15 Jun 2018 @ 1647 udo Series of many good sized 30 foot+ concerted minors produced large streams of runoff.
8690 15 Jun 2018 @ 0735 15 Jun 2018 @ 0755 bbev N vent 25-30' at times (well over trees from mid deck) less vertical play this morning than last night. SV 5-15', with steady, light runoff. 0744 strong sustained, (10-15 sec) minor, vertical 35-40 feet from NV 25' vert from SV with heavy overflow down runoff. Deep rumble with percussive NV starts.
8684 14 Jun 2018 @ 2100 --- Polly The “weekly” cycle at Norris has shortened to 6 days. This can be seen in Porkchop’s YVO graph. Also, on-site reports show some facets that Steamboat may be adjusting to this shorter cycle. (Today’s Steamboat graph update was not available at this time.)
8683 14 Jun 2018 @ 1900 14 Jun 2018 @ 2000 cb concerted minors. NV 15 - 25 ft with some vertical splashing 10ft. SV 10 - 15 ft. @ 1856 light South run off channel water has reached the bridge.
8680 14 Jun 2018 @ 1450 14 Jun 2018 @ 1510 cb Some concerted play with SV & NV. South runoff channel is damp but water has not reached the bridge.
8674 14 Jun 2018 @ 0825 14 Jun 2018 @ 0905 bbev South vent 8 -10 ft. North vent less frequently at 10 -15 feet. @ 0847 & 0854 had a concerted minor, NV @20+ feet and SV was 10 - 15 ft. No water in either runoff channels. Cistern in overflow.
8652 13 Jun 2018 @ 0808 13 Jun 2018 @ 0859 WillBoekel Whispy jets of water 4 - 6ft out of North vent with impressive (it's cold this morning) billows of steam. No water South vent. Audible gurgling and rumbling. Cistern Spring looks like it recently reached overflow as the runoff pools are full and steamy but no water in the runoff channels yet (0834).
8651 13 Jun 2018 @ 0809 13 Jun 2018 @ 0851 cb Whispy jets of water 4 - 6ft out of North vent with impressive (it's cold this morning) billows of steam. No water South vent. Audible gurgling and rumbling. Cistern Spring looks like it recently reached overflow as the runoff pools are full and steamy but no water in the runoff channels yet (0834).
8646 12 Jun 2018 @ 1901 12 Jun 2018 @ 1955 cb Steamboat is gently steaming still. No audible sounds and no water. Both run off channels are dry. Emerald Spring is in overflow again and is its beautiful green color. Cistern Spring is filling with a vigorous 2 vent boil 8 - 10" high. It is approximately 2 feet below the rim of the inner tube.
8643 12 Jun 2018 @ 0839 12 Jun 2018 @ 1034 cb Steamboat is gently steaming with no water. VERY little audible huffing sounds. A trickle of water in the North runoff channel. Emerald Spring water level has dropped and is barely putting water into the runoff channel. . Cistern Spring is EMPTY with very little steam.
8641 11 Jun 2018 @ 0908 11 Jun 2018 @ 1220 DanS Post major eruption water play continued with some bursts estimated at 70-80 feet. North vent water was brown and continued to throw pebbles fairly often. Frequency of larger burst play appeared to decrease as time passed.
8629 11 Jun 2018 @ 0425 11 Jun 2018 @ 0658 CrisG Arrived to wet parking lot and steam phase in progress. At 0540, noted increased volume to steam. At 0548, water reentered steam with North vent erupting well above treeline from upper platform. Water from North Vent initially white, turned brown at 0554. Little to no water in South Vent during reentry. Cistern was down slightly upon arrival. At 0616, water level was down several more inches. North vent visibly tossing rocks at 0612, could hear rocks falling around 0600.
8624 10 Jun 2018 @ 1845 10 Jun 2018 @ 2130 ypcaribou No major yet. Lots of regular concerted splashes half as tall to as tall as the trees. Not much vertical. E channel wet with a few good surges. W channel dry, not a trickle.
8623 10 Jun 2018 @ 2058 --- DanS Has not erupted yet. Cold and windy - bring warm clothes if coming tomorrow!
8617 10 Jun 2018 @ 1504 --- udo No eruption yet. Huge false start minor at 1114.
8615 10 Jun 2018 @ 1410 --- Tara No eruption yet.
8614 10 Jun 2018 @ 1100 10 Jun 2018 @ 1156 Tara Strong push, series of large minors leading to huge minor at 1114 that was stronger than "The 1408" on May 26. North sustained to 50+ feet and threw many rocks, left and right side of bottom rock covered. Cistern Spring dropped below overflow level on the east side of the pool. Everyone who had seen it before thought it was starting. Strong minors less frequent until 1156 when they entered a lull. Cistern had recovered by 1240.
8609 09 Jun 2018 @ 1952 09 Jun 2018 @ 2014 bbev Both alternate and concerted minors with 1-2 minute pauses. North 15-25' and South 5-15'. No real "pushes" of water from S down main runoff, but still a light, steady flow during the short time we were there.. N runoff dry. Appears to be progressing very much like previous post eruptive activity witnessed in the recent past. Mosquitos are relentless and vicious.
8583 09 Jun 2018 @ 0724 --- cb Nice concerted MINOR play from both vents. 15 - 20 ft splashes out of NV. 10 - 15 feet out of SV. Steady light flow of water down the Main runoff channel. North runoff channel is dry in front of the lower platform. Cistern Spring again is to steamy to see the pool but I can hear boiling.
8556 08 Jun 2018 @ 0730 08 Jun 2018 @ 0819 cb Steamboat > 8 - 15+ foot jets of water from North vent at 0731, 0733 0741 0749, 0802. 0741, 0749 0759 had concerted light water from both vents. Main runoff channel has light water that extends approximately 30 feet from SV. Runoff channel in front of the platform (North?) is dry dry dry! Cistern Spring has heavy steam that obscures a view. I can hear a boil and see convection waves on the edge of the pool.
8546 07 Jun 2018 @ 1918 07 Jun 2018 @ 1937 bbev 1918, Quietly steaming, very little sound, no water seen in geyser or runoff channels. Cistern boiling more vigorously than this morning with more overflow.1930 wispy jet of water out of north vent following mild rumblings. 1935 anther wispy jet following rumbling. Mosquitos are driving us out! 1937 more splashing, 4-6', from north.
8544 07 Jun 2018 @ 1220 --- bbev Still quiet and steaming, no water in geyser or runoff.
8523 07 Jun 2018 @ 1040 --- CrisG Steamboat contines to gently steam. No water observed from vents.
8510 07 Jun 2018 @ 0850 07 Jun 2018 @ 0912 bbev Steamy, no water seen from Steamboat or in either rurnoff channels. Some huffing, but mostly quiet. Cistern Spring is 2" below overflow, gently boiling.
EntrySourceLinkComment
04 Jun 2018 @ 0904 JSJ https://www.youtube.com/watch?v=yZoDFbO84OE Video compilation of Steamboat Geyser's 9:04 to 9:36 AM major eruption on 4 June 2018. Water phase clips start at time stamp 5:27. Steam phase clips start at time stamp 22:29. Explanatory caption is below video (click on "Show More").
04 Jun 2018 @ 0904 JSJ https://www.flickr.com/photos/jsjgeology/albums/72157670618318878 Photo album of Steamboat Geyser's 9:04 to 9:36 AM major eruption on 4 June 2018 (5 pre-eruption photos, 156 water-phase photos, 54 steam phase photos).
15 Jun 2018 @ 1655 EmilyW https://i.imgur.com/vo8gQz7.png Utah Seismo from 6/15/18
04 May 2018 @ 2315 DGInc https://drive.google.com/file/d/1rHiqMIb9CfD-cAo7vbUn8HbE_gx0Auna/view NPS Steamboat data visualized, together with some comments from me
13 May 2018 @ 0351 DGInc https://drive.google.com/file/d/1Vfeb7Yv4VAZDsYyo5lwtvIvvByMxVELB/view NPS Steamboat data visualized, together with some comments from me
13 May 2018 @ 0351 DGInc https://www.isthisthingon.org/Yellowstone/archive/2018/05/YNM_SHZ_WY_01-20180513.png YNM seismograph
04 May 2018 @ 2315 DGInc https://www.isthisthingon.org/Yellowstone/archive/2018/05/YNM_SHZ_WY_01-20180504.png YNM seismograph
04 May 2018 @ 2315 DGInc https://natwebcaww01.wr.usgs.gov/nwisweb/data/img/USGS.06036940.82336.00065..20180504.20180505..0..gif Spike on Tantalus Creek gauge just after midnight
31 Jul 2013 @ 1930 JSJ https://www.youtube.com/watch?v=hlaa_lgxVrA Video by Micah Kipple of Steamboat's post-eruption steam phase in the morning of 1 August 2013.
31 Jul 2013 @ 1930 JSJ https://www.youtube.com/watch?v=Hx8M6MAhAyo Video of water-phase.
31 Jul 2013 @ 1930 WillBoekel https://www.facebook.com/photo.php?v=557326510991121&set=o.4939307398&type=2&theater videos found by Janet White
31 Jul 2013 @ 1930 WillBoekel https://www.facebook.com/photo.php?v=10151752308974329 videos found by Janet White
Baseline does not exist.


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