Last Known Eruption
216d 2h 34m ago

Latest Eruptions

Eruption DurationInterval
09 Sep 2023 @ 1948 ie7d 2h 45m
02 Sep 2023 @ 1702:320m 59s
02 Sep 2023 @ 1701:330m 45s
02 Sep 2023 @ 1700:484d 42m
29 Aug 2023 @ 1618 ie21h 49m
28 Aug 2023 @ 1829 ie85d 5h 57m
04 Jun 2023 @ 1232 ie14d 53m
21 May 2023 @ 11391h 44m
21 May 2023 @ 0955 ns20h 33m
20 May 2023 @ 1322 ie2h 9m
20 May 2023 @ 111319d 18h 56m
30 Apr 2023 @ 1617
30 Apr 2023 @ 1617
30 Apr 2023 @ 16171m
30 Apr 2023 @ 1616
30 Apr 2023 @ 16166d 22h 50m
23 Apr 2023 @ 17261m
23 Apr 2023 @ 1725
23 Apr 2023 @ 17252m
23 Apr 2023 @ 1723
23 Apr 2023 @ 1723
23 Apr 2023 @ 17231m
23 Apr 2023 @ 17221m
23 Apr 2023 @ 1721
23 Apr 2023 @ 17211m
23 Apr 2023 @ 17201m
23 Apr 2023 @ 171988d 6h 38m
25 Jan 2023 @ 094129d 20h 4m
26 Dec 2022 @ 1337<10s 2m
26 Dec 2022 @ 1335<10s 2m
26 Dec 2022 @ 1333>1m 0s 2m
26 Dec 2022 @ 13313m
26 Dec 2022 @ 1328<10s 3m
26 Dec 2022 @ 13256m
26 Dec 2022 @ 1319 ns>3m 8d 3h 52m
18 Dec 2022 @ 09273m
18 Dec 2022 @ 09241m
18 Dec 2022 @ 09231m
18 Dec 2022 @ 09221m
18 Dec 2022 @ 09212m
18 Dec 2022 @ 0919 ns1y 100d 16h 54m
08 Sep 2021 @ 1725 ie1d 41m
07 Sep 2021 @ 1644 ie3y 3d 6h 8m
05 Sep 2018 @ 103617m
05 Sep 2018 @ 101924m
05 Sep 2018 @ 095533d 21h 15m
02 Aug 2018 @ 1240 ini1h 21m
02 Aug 2018 @ 1119 ini33m
02 Aug 2018 @ 1046 ini15h 1m
01 Aug 2018 @ 194553d 11h 37m
09 Jun 2018 @ 0808 ini2d 21h 28m
06 Jun 2018 @ 104022d 23h 24m
14 May 2018 @ 1116 ie4d 2h 33m
10 May 2018 @ 0843 ie274d 16h 21m
08 Aug 2017 @ 162223m
08 Aug 2017 @ 155920m
08 Aug 2017 @ 153921m
08 Aug 2017 @ 151819m
08 Aug 2017 @ 145918m
08 Aug 2017 @ 144127m
08 Aug 2017 @ 14148d 20h 45m
30 Jul 2017 @ 1729 ie190d 6h 34m
21 Jan 2017 @ 0955 ie1y 167d 23h 35m
07 Aug 2015 @ 112031d 18h 41m
06 Jul 2015 @ 1639 ie46d 22h 53m
20 May 2015 @ 17465m
20 May 2015 @ 174115m
20 May 2015 @ 172630m
20 May 2015 @ 16563m
20 May 2015 @ 165319m
20 May 2015 @ 16343m
20 May 2015 @ 16312m
20 May 2015 @ 16299m
20 May 2015 @ 16207m
20 May 2015 @ 16134d 21h 45m
15 May 2015 @ 1828 ie277d 8h 55m
11 Aug 2014 @ 0933 ie30d 20h 38m
11 Jul 2014 @ 1255 ie333d 19h 10m
11 Aug 2013 @ 1745 ie3d 3m
08 Aug 2013 @ 1742 ie65d 7h 2m
04 Jun 2013 @ 1040 ie2d 2h 15m
02 Jun 2013 @ 0825 ie

Interval Statistics

Interval Count74
Min0m
Max3y 3d 6h 8m
Mean50d 16h 41m
Median31m
Initial-to-Initial
Interval Count3
Min33m
Max54d 2h 38m
Mean18d 1h 30m
Median1h 21m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
33952 30 Jan 2024 @ 1115 --- aferrara erupting once or twice per minute
32256 06 Dec 2023 @ 1615 --- aferrara erupting about once per minute
26123 07 Jun 2023 @ 1238 --- SantaFe108 Erupting very frequently, multiple eruptions per minute.
25297 30 Apr 2023 @ 1618 --- SantaFe108 Erupting VERY frequently, intervals of <30s.
25235 23 Apr 2023 @ 1719 23 Apr 2023 @ 1726 SantaFe108 Erupting with intervals of seconds to 1 minute.
24779 18 Dec 2022 @ 0920 --- aferrara Erupting 3-6' suddenly, trailing shorter, and fully pausing with a still pool for 15-45s before restarting.
11749 12 Jun 2019 @ 1346 12 Jun 2019 @ 1515 JSJ Viewed from trail to Daisy Geyser & from Castle to Morning Glory trail. No eruptions. Areas around vent & to-the-north runoff channel have curled-upward microbial mats from desiccation. Likely no eruptions from Round Spring Geyser for some time. 1503 - as seen from main trail, there is water in the basin, but it is at a low level, with bubbling and occasional blipping.
8475 05 Jun 2018 @ 1111 --- JSJ Round Spring Geyser active - observed, in passing, four brief eruptions at 1111 to 1112.
4837 08 Aug 2017 @ 1414 08 Aug 2017 @ 1636 JSJ Durations of observed eruption series this afternoon: >14m (maybe), 7m, 7m, 10m, 7m, 7m, 14m. True intervals between observed eruption series this afternoon (= end of series to start of next series): 13m, 11m, 12m, 11m, 13m, 16m.
4576 29 Jul 2017 @ 1156 --- JSJ Not erupting.
2995 06 Jun 2016 @ 1127 --- JSJ Round Spring Geyser was off in the late morning. Ditto when I went by in the evening.
2351 14 Sep 2015 @ 1100 --- kenreeves (oops, carrage return doesn't work here. Will post on e-mail when I return home) also UNNG-RSG-2. Time and duration to nearest second 11:00:31 d 11 11:00:54 d 9 11:01:16 d 5 11:01:28 splash 11:01:57 d 6 11:02:23 d 6 11:02:45 splash 11:03:32 d 5 11:03:32 d 20 UNNG-RSG-2 11:04:11 d 5 11:04:29 d 12 11:04:51 d 7 11:05:11 d 5 11:05:29 d 7 11:05:57 splash 11:06:17 d 7 11:06:40 d 6 11:07:01 d 8 11:07:33 d 7 11:07:53 d 10 11:08:18 d 5 11:08:36 d 6 11:08:55 d 4 11:09:09 splash 11:09:19 d 4 11:09:34 d 5 11:09:58 splash 11:10:21 d 4 11:11:13 splash 11:12:11 d 5 11:12:21 d 6 11:12:21 d 22 UNNG-RSG-2 11:13:03 d 6 11:13:19 d 8 11:13:36 d 5 11:13:52 splash 11:13:58 d 6 11:14:22 d 7 11:14:48 d 8 11:15:12 d 11 11:15:39 splash 11:16:00 splash 11:16:15 d 8 11:16:37 d 8 11:16:56 d 10 11:17:16 d 9 11:17:39 d 6 11:18:01 d 7 11:18:25 d 8 11:18:53 d 5 11:19:16 d 5 11:19:35 d 8 11:19:57 splash 11:20:12 d 2 11:20:21 d 49 UNNG-RSG-2 11:20:48 d 5
EntrySourceLinkComment
08 Aug 2017 @ 1622 JSJ https://www.youtube.com/watch?v=vfMc4RvE4WY#t=2m13s Clips 4-5 of this video compilation (time stamp 2:13 to the end) show part of Round Spring Geyser's 4:22 to 4:36 PM eruption series on 8 August 2017.
08 Aug 2017 @ 1559 JSJ https://www.youtube.com/watch?v=vfMc4RvE4WY Clips 1-3 of this video compilation (beginning to time stamp 2:12) show part of Round Spring Geyser's 3:59 to 4:06 PM eruption series on 8 August 2017.
08 Aug 2013 @ 1742 JSJ https://www.flickr.com/photos/jsjgeology/14024069953 Video clip of Round Spring Geyser erupting during the late afternoon of 8 August 2013.
11 Aug 2013 @ 1745 JSJ https://www.flickr.com/photos/jsjgeology/14000903291 Video clip (1 of 3) of Round Spring Geyser erupting during the late afternoon of 11 August 2013.
02 Jun 2013 @ 0825 JSJ https://www.flickr.com/photos/jsjgeology/14003650925 Photo (1 of 7) of Round Spring Geyser erupting during the mid-morning of 2 June 2013.
04 Jun 2013 @ 1040 JSJ https://www.flickr.com/photos/jsjgeology/14024055863 Photo (1 of many) of Round Spring Geyser erupting in the late morning of 4 June 2013.
Baseline does not exist.