Last Known Eruption
3y 77d 14h 59m ago

Latest Eruptions

EruptionDurationInterval
03 Sep 2014 @ 2243 E maj23m 1y 34d 3h 13m
31 Jul 2013 @ 1930 E maj6y 162d 2h 30m
21 Feb 2007 @ 16005h 0m
21 Feb 2007 @ 1100 min1y 273d 21h 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 A36d 15h 0m
10 Mar 1982 @ 0900 A7d 9h 0m
03 Mar 1982 @ 0000 A9d 5h 0m
21 Feb 1982 @ 1900 A9d 0m
12 Feb 1982 @ 1900 A30d 2h 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 A258d 5h 24m
10 Aug 1966 @ 193652d 8h 54m
19 Jun 1966 @ 1042280d 12h 53m
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
14 Jan 1965 @ 0400 A80d 14h 25m
25 Oct 1964 @ 133525d 17h 45m
29 Sep 1964 @ 19509d 7h 5m
20 Sep 1964 @ 12457m 6d 14h 15m
13 Sep 1964 @ 22308d 15h 0m
05 Sep 1964 @ 07309d 17h 37m
26 Aug 1964 @ 13539d 5h 43m
17 Aug 1964 @ 08105m 8d 11h 0m
08 Aug 1964 @ 21108d 20h 10m
31 Jul 1964 @ 01007d 20h 55m
23 Jul 1964 @ 04056d 6h 35m
16 Jul 1964 @ 21306d 3h 20m
10 Jul 1964 @ 181010m 7d 20h 40m
02 Jul 1964 @ 21304d 19h 15m
28 Jun 1964 @ 02155d 15h 15m
22 Jun 1964 @ 11005m 7d 15m
15 Jun 1964 @ 10455d 20h 0m

Interval Statistics

Interval Count99
Min5h 0m
Max9y 216d 9h 20m
Mean185d 8h 4m
Median18d 18h 0m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
7540 29 Sep 2017 @ 1430 --- Tara Very weak, wispy splashing every few minutes; hardly any discharge.
7300 25 Sep 2017 @ 1355 --- Polly YVO graph appears to show a disturbance in the basin.
6246 09 Sep 2017 @ 1830 --- Kitt B NO STEAMBOAT ERUPTION! CONFIRMED BY LIST OF OBSERVERS.
6147 09 Sep 2017 @ 0736 09 Sep 2017 @ 0750 ypcaribou Multiple concerted minors in a row about 2 minutes apart. Cascading water down hill from south vent. North vent higher for most but 2 had a taller south vent splashes. Full puddle of water at bottom of hill at boardwalk.
5789 04 Sep 2017 @ 1445 04 Sep 2017 @ 1545 Polly I got 60% concerted this hour, but think I missed some North Vents due to wind and steam. Actual percentage was probably higher.
5738 04 Sep 2017 @ 0834 04 Sep 2017 @ 0934 Polly In an hour of observation, I got 80% concerted minor starts. YVO graph has not been updated but Steamboat should be on its way out of the dip of it's 10 day cycle.
5019 12 Aug 2017 @ 1212 12 Aug 2017 @ 1233 Ben VL 29 minors took place in this time. 41% were concerted, and of those one was a concerted start and the rest were north vent initiated. The rest were north solos except for one south solo. When it got heavily involved, the south vent was definitely putting out more volume than north was (I feel like north vent's jets are still a little thin, although I need more experience to say for sure), and it increased runoff signifigantly. You could watch it cascade down the runoff channel. The steady runoff was slightly greater than yesterday, today is the second or third day of increasing temperatures after the dip. The overall minor activity and runoff seemed of similar strength (maybee a little stronger) to what I saw on June 9 and 10 in the middle of Steamboat's temperature cycle.
4835 08 Aug 2017 @ 0239 --- Graham Reported "Not major but 100 ft minor". Would like some additional confirmation as it was the 3rd entry from the user and their first 4 entries included two webam times (one webcam BHI followed by a non-webcam BH) yesterday, and a BH Webcam time today which was off by several minutes. Converting their eruption time to a note for the record.
4535 25 Jul 2017 @ 1100 25 Jul 2017 @ 1145 Polly Still having good runoff from some minors. (Didn't take notes on amount of concerted minors today.) Chance for possible eruption likely over for this cycle, but may want to keep an eye on it next time the YVO temperature graph peaks. (Steamboat temperatures have been in a good rhythm the last few cycles. The last two eruptions came on the rise in temperatures after a good dip. Best guess for the new cycle is about August 3-5. )
4526 24 Jul 2017 @ 0905 24 Jul 2017 @ 1105 Polly I got 81% concerted minors the first hour and 83% concerted the second hour. Several South jets and a few North jets observed.
4488 30 Jun 2017 @ 1004 30 Jun 2017 @ 1104 Polly Steamy morning (rained yesterday), so hard to get an accurate percentage of concerted minors. Observation included a couple of nice minors - two that were ~18 seconds long with lots of runoff and another that was one of the best minors I've ever seen (thick, full, lots of runoff). These 3 all had concerted starts.
4271 08 Jun 2017 @ 0923 08 Jun 2017 @ 1023 Polly 58% concerted minors and 38% North Vent initiated. Some North Vent jets and South Vent jets observed. Well defined minors.
3532 23 Aug 2016 @ 0901 --- udo North vent solo moderate volume 0901, South vent is not producing as much volume as it was a week ago. No audible cascade-like overflow in runoff channel. Concerted minors are thin when they happen. 0955 1st audible cascade from South vent solo in an hour, then1002, 1032 (good height & volume dual),
3500 17 Aug 2016 @ 0905 --- udo Overall impression - output is greater than what I saw earlier this year - Feb, Jun & Jul. North vent not producing much volume in 95% of concerted jetting. Large surges and audible cascade-like overflow from South vent at 0905, 0910, 0912, 0918, 0935, 0937, 0953, 0955, 0959, 1004, 1008, 1032, 1048, 1058, 1101, 1107, 1112, 1126, 1129, 1131, 1141, 1203, 1205, 1207, 1212, 1213, 1223, 1225, 1226, 1236, 1238, 1242. BATHROOM! Heavy north solo 1045, heavy dual 1135, moderate dual 1157, heavy dual 1239
2586 29 Oct 2015 @ 1305 29 Oct 2015 @ 1318 billwarnock Steamboat is still in "zap" mode; no water from either north or south vents. Moderate steady steam.
2410 23 Sep 2015 @ 0950 23 Sep 2015 @ 1010 billwarnock Steamboat is still in "zap" mode with no minor eruptions and no overflow down channel.
2397 21 Sep 2015 @ 1520 --- MAB runoff channel below Steamboat on the way to Echinus - completely dry
2100 10 Aug 2015 @ 1155 10 Aug 2015 @ 1210 Micah Kipple For the very short time I was on the lower platform there were at least 3 strong concerted minors.
2021 05 Aug 2015 @ 2103 05 Aug 2015 @ 2132 RyanMaurer Obviously weak activity. watched for about a half hour. Near constant minor activity that would wax and wane. A "surge" would send water out of both vents simultaneously. The initial surges sent sustained water to above tree level from the North vent and to half way up the trees from the South vent. The first three held this jetting for about 20-25 seconds each and then would die down, build up, and die down until it almost stopped when it would immediately do another surge. The last two were concerted but weaker and not as consistent. Water output from North was wispy at best but did send waves down the channels. Water from south was heavy - Aurum like? Knowing how my statements get taken I'll state very clearly that I know this is very weak activity. The tall, sustained, and concerted activity was interesting enough that I felt it necessary to leave a note here - just in case ;)
1716 10 Jun 2015 @ 1227 --- udo For about an hour north vent shot above the trees around every 2 to 6 minutes in thin jets. South vent joined about 80% with some volume at times but was height challenged. September is coming.
1199 04 Sep 2014 @ 0000 --- Andrew Steamboat is believed to have had a major last night at about 2300-2350 hours.
1069 12 May 2014 @ 0847 --- Polly At 0847, a strong minor produced runoff that was like a mini-river.  I could hear it travel all of the way down the hill.  During the morning, my percentages of concerted minors were 85-87%.  Again, I saw some jetting in both the South and North Vents.  At times, I heard roaring coming from the South Vent area.  The wind was blowing towards me much of the morning, which probably enhanced the sounds.  It was steamy and hard to tell how high the South Vent minors were.  In the afternoon, the percent concerted had dropped to about 66%, but the runoff increased.  I left at 1400, but the YVO temperature graph shows another spike to ~32 degrees Celcius about 2 hours later.
1068 11 May 2014 @ 1444 11 May 2014 @ 1544 Polly Minors appeared to be about 50% concerted during the hour 1444-1544.  It was steamy and the wind was blowing toward me, so visibility was an issue.  I did see some jetting in both the South and the North Vents.  At times, there was a steamy pressure sound coming from near the South Vent.  The runoff was, at times, the heaviest that I have ever seen.  Two of the minors produced a deep rumble that I have not heard before.  The poor visibility kept me from seeing how high the South Vent went on those minors (my guess is not much higher than the trees), but they sounded strong.  This coincided with a high a ~32 degrees Celcius peak on the YVO temperature graph.
1054 27 Apr 2014 @ 0000 27 Apr 2014 @ 1200 Polly My brother Bob reports that he only had about 49% concerted this morning with low water.  He says that there is very little steam throughout the back basin this morning despite the low outdoor temperature.
1053 26 Apr 2014 @ 0000 26 Apr 2014 @ 2359 Polly My brother, Bob Partner, had just over 90% concerted minors during 2 nonconsecutive hours today.  He only counted those minors lasting longer than 30 seconds, so my percentage would probably have been lower.  He had one minor about 150% of the tops of the trees (standing on the mid-level platform).  Overall, though, he said runoff was low and most minors were on the short side.  Temperature graph from YVO has been down since 4/22 but likely dipped yesterday and rising today.  He left the area due to deteriorating snowstorm conditions.
1048 20 Apr 2014 @ 1548 20 Apr 2014 @ 1648 WillBoekel From 1548-1648 for minors there were 40 North Vent starts, 2 South vent starts, and 26 simultaneous starts.
7106 08 Jul 1996 @ 0815 08 Jul 1996 @ 0900 research-mab 07/08/1966 Steamboat – Took temps again 200º S. vent. 198 ½ N vent. Between 8:15 & 9am. Minor eruptions were less continuous than yesterday and drainage channel a little drier. About 9am however activity was vigorous for several minutes about like yesterday. Water levels bout the same.
7577 29 Jan 1989 @ 1152 --- JSJ Boiling audible at depth. No surface minor play.
7575 09 Apr 1988 @ 0000 09 Apr 1988 @ 2359 JSJ Steamboat Geyser has no minor play. Hydrophane Springs' water level was down ~1 meter for ~1 week (estimated). These were the only two signs of a possible minor Norris disturbance.
7636 02 Mar 1985 @ 1800 --- research-mab 3-02-85 Steamboat blue ice formation estimated 2m high
7631 12 Apr 1984 @ 1800 --- research-mab 4-12-84 Steamboat has very weak minor play – very long recovery from ~3-15-84 eruption.
7610 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Steamboat Geyser – minor plays up to 12m small & irregular runoff downslope under footbridge at base of slope. Ice formation west of main vent is blue in color & over 1m high.
7668 11 Mar 1982 @ 0800 --- research-mab 3-11-82 Steamboat was very quiet when first observed at 0800 this am – indicating that its steam phase lasted less than 24 hrs. Fist sized altered tuff rock ~20m dia fragments were ejected out on snow pack as far as ~70m upslope from upper vent.
7665 10 Feb 1982 @ 1800 --- research-mab 2-10-82 Steamboat has very massive minor play out of both vents such that an ornate ice formation has built up on the NE to SW sides of the vents & a very obvious runoff is present down to the base of the hill. With height & volume the minor play is some of the most impressive this observer has witnessed in the last 12 years.
7658 24 Jan 1979 @ 1800 --- research-mab 1/24/1979 Ice mound by Steamboat ~1 ½ m high.
5332 24 Aug 1978 @ 0730 24 Aug 1978 @ 1030 research-mab 08/24/1978 Steamboat isn’t over yet! At approximately ~735, a new water phase period began throwing water (sometimes mud) 100-150 feet into the air out of the North vent. Not as loud as yesterday. Some water flowing over the boardwalk. Activity ceased at about 1014 hrs. Water height out of the south vent was a estimated… {log here is blank}
5091 28 Mar 1978 @ 1800 --- research-mab 03/28/1978 Steamboat awakens after 9 years!!! At approx 10:15, a YACC crew heard & saw the geyser in a major eruption. Heights were estimated between 300-400’. Cars in the parking log were drenched! Nearly all of Mammoth turned out to witness the big event. When viewed at 6:00 pm, coarse gravel could be seen all over the snow on the hill, in the Steamboat area. Large amounts of material from the hill were washed onto the boardwalk below. Steam was roaring out of both vents, and a deep thudding could still be heard near the vent. Cistern Springs showed a dramatic change – water level down approx. 2 feet, no boiling.
7663 09 Mar 1978 @ 1800 --- research-mab 03/23/1978 Thermal changes observed from 3/6-9/1978 Steamboat Geyser – more active; bursts more massive, longer duration & higher.
5691 06 Sep 1975 @ 1800 --- research-mab 09/06/1975 A little water being emitted from Steamboat today.
5638 18 Aug 1975 @ 1800 --- research-mab 08/18/1975 Steamboat putting out more spray than usual. (today- no time}
5837 21 Sep 1974 @ 1800 --- research-mab 09/21/1974 Steamboat – good minor activity from both vents, Can be heard from the vicinity of Echinus {no time noted}
5831 20 Sep 1974 @ 1800 --- research-mab 09/20/1974 Steamboat – some good minor activity today.
5807 07 Sep 1974 @ 1800 --- research-mab 09/07/1974 Steamboat – seems to be putting out more H20 than it has been most of the summer
6162 19 Sep 1973 @ 1000 --- research-mab 09/19/1973 Back Basin 10:00 am Steamboat still with a lot of water shooting 10-15’ from both vents.
6158 18 Sep 1973 @ 1800 --- research-mab 09/18/1973 Steamboat H20 to 10-15’ water now commonly coming from main vent.
6136 10 Sep 1973 @ 0830 --- research-mab 09/10/1973 0830 Steamboat seen with H20 yesterday and again today for the first time since?
6053 11 Aug 1973 @ 1800 --- research-mab 08/11/1973 {generic time} Also Steamboat and Africa very active
6046 06 Aug 1973 @ 1800 --- research-mab 08/06/1973 Steamboat minor play seen 30-40 ft highest as has been seen by this observer in two weeks {no time}
6029 07 Jul 1973 @ 1800 --- research-mab 07/07/1973 Steamboat more spray and steam jets of water to 50 ft and water lasting to 25 sec. {no time}
6010 11 Jun 1973 @ 0920 --- research-mab 06/11/1973 Steamboat again today to heights of about 60 or more, a solid column of steam rose well over 100 feet at 920
6453 06 Sep 1972 @ 1000 --- research-mab 09/06/1972 Witnessed the best minor play from Steamboat this morning all summer {generic a.m. time}
6443 31 Aug 1972 @ 1622 --- research-mab 08/31/1972 Steamboat had minor play at 4:22pm 5-10’ - first observed in a long time.
6385 12 Aug 1972 @ 1800 --- research-mab 08/12/1972 Steamboat apparently still hasn’t had any minor play.
6313 14 May 1972 @ 1800 --- research-mab 05/14/1972 The following geysers have been seen erupting since I arrived last night: Ledge 6-10’, Iris 2-3’, Little Whirligig 15’, Basin 1’-2’, Fan 4’-5’, Bear Den, Feisty, Fireball 2-3’, Minute 1’-2’, Blue 7-15’, Africa 25-35’, Vixen 7’-15’, Dr Morey’s Porkchop 3’-5’, Echinus 10’-40’, Steamboat 5-20’
6474 02 Oct 1971 @ 1800 --- research-mab 10/02/1971 Steamboat – no observed minor play {during day}
6518 12 Sep 1971 @ 1800 --- research-mab 09/12/1971 Steamboat Geyser – all the water was gone from the 2 vents and no true minor play has been seen for the past 2 days – just a little spray from the north vent, the geyserite to the south has dried & turned from pink to white
6533 10 Sep 1971 @ 1700 --- research-mab 09/10/1971 Steamboat Geyser – a very small amount of water was thrown out of the vents from the minor play at about 5:00 PM
6535 10 Sep 1971 @ 0900 --- research-mab 09/10/1971 No change in Steamboat – putting out copious amounts of steam, but no water. {morning - no time noted}
6554 11 Jul 1971 @ 1800 --- research-mab 07/11/1971 Mrs Decker came in this P.M. to look at Steamboat.
7502 27 Sep 1969 @ 1800 --- research-mab 09/27/1969 Sept 27 1969 No water over runoff – still very small eruptions. Did Steamboat ruin itself in March? Or has the dry summer robbed it of H2O?
7488 23 Sep 1969 @ 0800 --- research-mab 09/23/1969 Steamboat – little activity, small sprays not even clearing the vents, ie, not running water down runoff channel.
7484 24 Aug 1969 @ 1800 --- research-mab 08/24/1969 Steamboat – larger jets of H2O than previously see this yr {not a specfic time}
7510 04 Jun 1969 @ 1800 --- research-mab 06/04/1969 Steamboat is less active today then yesterday – very little H2O is being erupted.
7515 01 Jun 1969 @ 1800 --- research-mab 06/01/1969 Steamboat was playing at intervals of 3-5 minutes, shooting H2O twenty to thirty feet. {first day around basin- not a specific time}
7411 26 Sep 1968 @ 0800 --- research-mab 09/26/1968 Steamboat back to its normal minor eruptions. All major features appear about the same as at the beginning of the year.
7413 21 Sep 1968 @ 1800 --- research-mab 09/21/1968 *Steamboat appears to have finally recovered from the Aug 26 eruption. In afternoon, large sprays were seen, and H2O was in the runoff channel.
7481 19 Sep 1968 @ 1800 --- research-mab 09/19/1968 Steamboat sprays larger. Occasional bursts put a small amount of water down the runoff from the South vent. Still not recovered fully… No appreciable amount of runoff visible.
7461 14 Sep 1968 @ 0800 --- research-mab 09/14/1968 Plays from Steamboat larger but are still dropping back into the vent so no water in the runoff yet.
7460 12 Sep 1968 @ 0800 --- research-mab 09/12/1968 Steamboat playing higher, but no water in the runoff yet.
7457 09 Sep 1968 @ 0800 --- research-mab 9/09/1968 Steamboat putting out small bursts from both vents. Still no water in runoff channel.
7456 08 Sep 1968 @ 1800 --- research-mab 09/08/1968 Some sprays showing slightly above the level of the north vent of Steamboat.
7455 05 Sep 1968 @ 0800 --- research-mab 09/05/1968 Some H2O in vents of Steamboat No plays above the surface yet.
7459 01 Sep 1968 @ 0800 --- research-mab 09/01/1968 Can hear water splashing in north vent of Steamboat, but can’t see any water yet.
7518 31 Aug 1968 @ 0800 --- research-mab 08/31/1968 Steamboat still puffing (steam) No water in Steamboat.
7466 30 Aug 1968 @ 0800 --- research-mab 08/30/1968 No H2O visible in Steamboat.
7410 26 Aug 1968 @ 1435 --- research-mab 08/26/1968 2:35 Can hear Steamboat from the top of the hill north of Steamboat trail.
7463 20 Jul 1968 @ 0800 --- research-mab 07/20/1968 Steamboat is quite active with much H2O run-off
7441 19 Jul 1968 @ 0800 --- research-mab 07/19/1968 Steamboat was shooting H2O a good 50’ from South Vent; also a good run-off of H2O was present beyond the bridge. For the first time I noted some six to seven steam vents along the west slope of Steamboat. This activity this morning is much more forceful than usual. {The steam vents Ed reports to have always been present, they were just more obvious w/high humidity & cool temp}
7440 17 Jul 1968 @ 0800 --- research-mab 07/17/1968 A small runoff noted on South Vent of Steamboat.
7417 16 Jul 1968 @ 0800 --- research-mab 07/16/1968 Steamboat geyser is playing more water out of the north vent than the south. The runoff channel to the south of the south vent is dry. The channel had become dry for about a week.
7439 10 Jul 1968 @ 0800 --- research-mab 07/10/1968 Steamboat is playing some very nice plays from the north vent.
7405 25 Jun 1968 @ 0700 --- research-mab 06/25/1968 Steamboat was forcing H2O into the far run-off channel. Much steam this morning. 7:00 am
7403 23 Jun 1968 @ 0800 --- research-mab 06/23/1968 Steamboat is putting water down the runoff channel.
7402 20 Jun 1968 @ 0800 --- research-mab 06/20/1968 Steamboat is shooting water some 20’ from the North Vent and more H2O is coming from the South Vent. However, the far South runway has no H2O drainage in it. There is more activity around Steamboat than yesterday.
7436 19 Jun 1968 @ 0800 --- research-mab 06/19/1968 *Steamboat putting a little water over the overflow to the south.
7398 15 Jun 1968 @ 1800 --- research-mab 06/15/1968 Steamboat throwing out of both vents in afternoon.
7397 13 Jun 1968 @ 0800 --- research-mab 06/13/1968 Steamboat is putting out some water out of the east side of the formation, but no water down the hill as yet.
7434 10 Jun 1968 @ 0800 --- research-mab 06/10/1968 Water can be heard in Steamboat from the boardwalk.
7433 09 Jun 1968 @ 0800 --- research-mab 06/09/1968 Water in Steamboat sounds like it may be down about 25 feet.
7425 06 Jun 1968 @ 0800 --- research-mab 06/06/1968 Steamboat putting out gentle steam, can not hear water.
7424 05 Jun 1968 @ 0800 --- research-mab 06/05/1968 Steamboat putting out a gentle steam, no water can be heard.
7419 03 Jun 1968 @ 1900 --- research-mab 06/03/1968 Steam from Steamboat could still be heard at 7:00 pm.
7420 03 Jun 1968 @ 1900 --- research-mab 06/03/1968 Steam from Steamboat could still be heard at 7:00 pm.
7472 03 Jun 1968 @ 0900 --- research-mab 06/03/1968 The light for pitchers [sic] was good only for the first 30 to 40 minutes of play. At 9:00 a.m. the sky was overcast and dark. The boardwalk to the west was dry all during the play, most all water and steam went to the north. This eruption was much noisier than the June 16 1967 eruption.
7379 27 Oct 1967 @ 1800 --- research-mab 10/27/1967 Steamboat – A big O. Oct 31 will make 138 days w/no erupt.
7362 05 Sep 1967 @ 1800 --- research-mab 09/05/1967 Steamboat is very active. Putting out great quantities of H2O down runoff and having very long plays from south vent. One play lasted 2 ½ minutes.
7314 12 Aug 1967 @ 1303 --- research-mab – Aug 12 1967 Steamboat erupted to 100’ or so at 1:03 pm and then had several high plays later in the afternoon.
7260 25 Jul 1967 @ 0800 --- research-mab 07/25/1967 Steamboat seems more active this morning than it was yesterday pm.
7306 21 Jul 1967 @ 0800 --- research-mab 07/21/1967 Cistern boiling very vigorously. Steamboat playing from both vents.
7277 06 Jul 1967 @ 0800 --- research-mab 07/06/1967 Steamboat very active from both vents.
Baseline does not exist.


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