| Eruption | Duration | Interval |
|---|---|---|
| 27 Apr 2019 @ 1354 | 2y 248d 20h 51m | |
| 21 Aug 2016 @ 1703 | 9y 60d 2h 33m | |
| 25 Jun 2007 @ 1430 | 59d 5h 34m | |
| 27 Apr 2007 @ 0856 | 68d 16h 19m | |
| 17 Feb 2007 @ 1537 ie | 222d 7h 21m | |
| 10 Jul 2006 @ 0916 | 4y 269d 20h 31m | |
| 14 Oct 2001 @ 1245 | 21d 22h 17m | |
| 22 Sep 2001 @ 1428 | 1m | 2y 361d 5h 35m |
| 27 Sep 1998 @ 0853 | 20d 16h 6m | |
| 06 Sep 1998 @ 1647 | 66d 1h 53m | |
| 02 Jul 1998 @ 1454 | 266d 2h 21m | |
| 09 Oct 1997 @ 1233 ie | 13d 20h 7m | |
| 25 Sep 1997 @ 1626 | ~1m 0s | 26d 22h 25m |
| 29 Aug 1997 @ 1801 | 3m | 20d 23m |
| 09 Aug 1997 @ 1738 | ~3¾m | 1y 289d 7h 36m |
| 25 Oct 1995 @ 1002 ie | 9d 18h 1m | |
| 15 Oct 1995 @ 1601 | 3m 7s | 24d 23h 47m |
| 20 Sep 1995 @ 1614 | 3m 43s | 48d 34m |
| 03 Aug 1995 @ 1540 | 6h 48m | |
| 03 Aug 1995 @ 0852 | 3 | 15d 23h 48m |
| 18 Jul 1995 @ 0904 | 6d 8h 33m | |
| 12 Jul 1995 @ 0031 ns | 8d 6h 37m | |
| 03 Jul 1995 @ 1754 | 309d 2h 30m | |
| 28 Aug 1994 @ 1524 | 3m 8s | 37d 20h 42m |
| 21 Jul 1994 @ 1842 ie | 4m | |
| 21 Jul 1994 @ 1838 | 3½m | 308d 5h 22m |
| 16 Sep 1993 @ 1316 | 3m 17s | 8d 23h 16m |
| 07 Sep 1993 @ 1400 | 1y 31d 19h 27m | |
| 06 Aug 1992 @ 1833 | 3m 15s | 16d 6h 56m |
| 21 Jul 1992 @ 1137 | ~3m |
| Interval Count | 29 |
| Min | 4m |
| Max | 9y 60d 2h 33m |
| Mean | 337d 2h 33m |
| Median | 37d 20h 42m |
| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
|---|---|---|---|---|
| 25248 | 26 Apr 2023 @ 0900 | --- | aferrara | Boiled up about 4 inches and dropped |
| 23930 | 20 Sep 2022 @ 0927 | 20 Sep 2022 @ 1000 | aferrara | Pushed out a couple small splashes, no more than an inch or two. Again at 0933, 0938 (spitting up ~4"), 0942, 0944, 0947, 0949 (close to a minute long, ~4", but never really sustained), 0953, 0957 |
| 23349 | 22 Aug 2022 @ 0825 | 22 Aug 2022 @ 0851 | BrianR | Blipping to 2ft 8:25-8;31, 8:41, 8:51 |
| 22830 | 24 Jul 2022 @ 0958 | --- | User34 | Spluttering to 6" for 20 seconds |
| 22829 | 24 Jul 2022 @ 0957 | --- | mhreed | Splashing along with boiling pushes in Grotto Fountain and spitting in South Grotto Fountain. |
| 21983 | 14 Jun 2022 @ 1928 | --- | RMichaels | Splashing up a few inches. |
| 14820 | 30 Jun 2020 @ 1917 | 30 Jun 2020 @ 1920 | BrianR | Blipping water but did not erupt with Grotto Fountain and South Grotto Fountain |
| Entry | Source | Link | Comment |
|---|---|---|---|
| 21 Jul 1994 @ 1842 | JSJ | https://www.youtube.com/watch?v=Y6rCRwZXCGE | Video by David Schwarz of Startling Geyser erupting during the early evening of 21 July 1994. |