| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 40145 |
29 Jun 2025 @ 0924 |
29 Jun 2025 @ 1000 |
BrianR |
Sporadic bursting to 4ft in this timeframe |
| 40142 |
29 Jun 2025 @ 0748 |
29 Jun 2025 @ 0903 |
BrianR |
Splashing was observed from the main vent and the two side vents on its south side during this timeframe. Mostly from the front side vent |
| 40088 |
28 Jun 2025 @ 0643 |
--- |
BrianR |
Saw one 4ft burst, may have been others before it |
| 40085 |
27 Jun 2025 @ 1852 |
27 Jun 2025 @ 1858 |
BrianR |
Sporadic bursts, one 8ft the rest under 3ft |
| 40080 |
27 Jun 2025 @ 0908 |
27 Jun 2025 @ 0916 |
BrianR |
Sporadic bursts up to 4ft |
| 39870 |
14 Jun 2025 @ 1032 |
--- |
Polly |
Intermittent periods of small splashes |
| 39869 |
14 Jun 2025 @ 1022 |
--- |
Polly |
Thin splashes |
| 39574 |
31 May 2025 @ 1530 |
--- |
Mikemcc |
several minutes of splashing. some to two feet. |
| 37697 |
24 Oct 2024 @ 1131 |
--- |
rayceanderson |
Weak splashing near the start of Grotto, nothing more |
| 37317 |
01 Oct 2024 @ 1352 |
--- |
ddshepard |
No eruption during Grotto Fountain and Grotto eruption except for a few small splashes. |
| 36682 |
01 Sep 2024 @ 1253 |
--- |
BrianR |
Some 2ft bursts but did not erupt |
| 36663 |
31 Aug 2024 @ 1134 |
31 Aug 2024 @ 1225 |
BrianR |
Sporadic bursting to 8ft |
| 36613 |
29 Aug 2024 @ 1532 |
29 Aug 2024 @ 1552 |
BrianR |
Sporadic bursting to 4ft |
| 36600 |
28 Aug 2024 @ 1348 |
--- |
BrianR |
A few 2ft bursts |
| 36575 |
27 Aug 2024 @ 1648 |
27 Aug 2024 @ 1749 |
BrianR |
Sporadic bursting mostly under 4ft, although I saw a few to 8ft |
| 36568 |
27 Aug 2024 @ 1152 |
27 Aug 2024 @ 1243 |
BrianR |
Sporadic bursting to 6ft |
| 36563 |
27 Aug 2024 @ 0634 |
--- |
CraigC |
splashing |
| 36561 |
26 Aug 2024 @ 1854 |
26 Aug 2024 @ 1908 |
BrianR |
Sporadic bursting to 6ft
Left area at 19:08 |
| 36558 |
26 Aug 2024 @ 0756 |
26 Aug 2024 @ 0826 |
BrianR |
Sporadic bursting to 4ft |
| 36477 |
19 Aug 2024 @ 1911 |
19 Aug 2024 @ 2050 |
Craigmon99 |
Bursting to 8 feet. No jets
Startling occasionally splashing
This has been happening on and off throughout this time period |
| 36299 |
06 Aug 2024 @ 0639 |
--- |
CraigC |
splashing |
| 36298 |
06 Aug 2024 @ 0625 |
--- |
CraigC |
splashing |
| 36296 |
06 Aug 2024 @ 0615 |
--- |
CraigC |
splashing |
| 36295 |
06 Aug 2024 @ 0604 |
--- |
CraigC |
splashing |
| 36241 |
03 Aug 2024 @ 0627 |
--- |
CraigC |
splashing |
| 36149 |
28 Jul 2024 @ 1217 |
--- |
Polly |
Steady bursts at this time. Occasional spurts before. |
| 35917 |
16 Jul 2024 @ 1246 |
16 Jul 2024 @ 1253 |
Polly |
Intermittent 5-6 foot splashing |
| 35646 |
30 Jun 2024 @ 1255 |
30 Jun 2024 @ 1409 |
BrianR |
Sporadic bursting to 6ft |
| 35633 |
30 Jun 2024 @ 0723 |
30 Jun 2024 @ 0740 |
BrianR |
Sporadic bursting to 6ft |
| 35630 |
30 Jun 2024 @ 0640 |
--- |
CraigC |
some splashing |
| 35618 |
29 Jun 2024 @ 1232 |
29 Jun 2024 @ 1328 |
BrianR |
Sporadic bursting to 8fr at start of time frame to 2ft at end of time frame except for the continuous eruption times at 12:49 and 12:55 |
| 35614 |
29 Jun 2024 @ 0646 |
29 Jun 2024 @ 0715 |
BrianR |
Sporadic bursting to 6ft |
| 35610 |
29 Jun 2024 @ 0623 |
--- |
CraigC |
bursting |
| 35567 |
26 Jun 2024 @ 0733 |
26 Jun 2024 @ 0746 |
BrianR |
Sporadic bursting up to 4ft |
| 35557 |
25 Jun 2024 @ 1354 |
25 Jun 2024 @ 1431 |
BrianR |
Sporadic bursting up to 6ft |
| 35530 |
24 Jun 2024 @ 1745 |
24 Jun 2024 @ 1747 |
BrianR |
A few bursts to 4ft |
| 35523 |
24 Jun 2024 @ 1052 |
24 Jun 2024 @ 1146 |
BrianR |
Sporadic bursting to 6ft |
| 35472 |
23 Jun 2024 @ 0725 |
23 Jun 2024 @ 0802 |
BrianR |
Sporadic bursting to 8ft |
| 35463 |
22 Jun 2024 @ 1317 |
22 Jun 2024 @ 1414 |
BrianR |
Sporadic bursting to 4 ft |
| 35306 |
18 Jun 2024 @ 1328 |
--- |
aferrara |
one vent on SGF splashing about 1ft, sustained, with some splashing in SGF's main vent |
| 34357 |
27 Apr 2024 @ 1038 |
--- |
DanS |
Burst of steam and gurgling as Grotto shut down. |
| 27754 |
24 Aug 2023 @ 1239 |
24 Aug 2023 @ 1250 |
BrianR |
Sporadic bursting to 2ft |
| 27700 |
20 Aug 2023 @ 0727 |
20 Aug 2023 @ 0738 |
BrianR |
Sporadic bursting to 2ft |
| 27692 |
19 Aug 2023 @ 1655 |
19 Aug 2023 @ 1808 |
BrianR |
Sporadic bursting to 6ft, Grotto quiet all this time. Stopped when Grotto became noisy |
| 27689 |
19 Aug 2023 @ 1614 |
19 Aug 2023 @ 1640 |
BrianR |
Sporadic bursting to 8ft |
| 26983 |
10 Jul 2023 @ 1536 |
--- |
ghost842 |
Ending |
| 26725 |
28 Jun 2023 @ 1709 |
28 Jun 2023 @ 1801 |
BrianR |
Sporadic bursting to 6ft |
| 26713 |
28 Jun 2023 @ 0904 |
28 Jun 2023 @ 1002 |
BrianR |
Sporadic bursting to 4ft |
| 26340 |
15 Jun 2023 @ 1242 |
--- |
Graham |
Bursting splashes. Also 1254 |
| 25587 |
20 May 2023 @ 1422 |
20 May 2023 @ 1445 |
Art |
Strong splashing and spikes but never truly started |
| 23833 |
15 Sep 2022 @ 0810 |
15 Sep 2022 @ 0830 |
aferrara |
Bubblers around SGF splashing infrequently during high pressure poil |
| 23728 |
11 Sep 2022 @ 1350 |
11 Sep 2022 @ 1520 |
OFVEC |
During this time there were 11 solo eruptions of South Grotto Fountain. Intervals were 7-14 minutes, reaching heights of 15' max. Grotto seemed ready to erupt throughout with pressure pool cycling every 10 minutes. Generally, SGF began eruptions following pressure pool drops and shut off before it rose. More info on this odd grotto incoming once my phone connects to the internet. |
| 23767 |
11 Sep 2022 @ 1519 |
--- |
aferrara |
Light splashing in bubblers with high pressure pool |
| 23392 |
24 Aug 2022 @ 1650 |
24 Aug 2022 @ 1732 |
BrianR |
Sporadic bursting to 6ft |
| 23384 |
24 Aug 2022 @ 1017 |
24 Aug 2022 @ 1117 |
BrianR |
Sporadic bursting to 6ft |
| 23351 |
22 Aug 2022 @ 0843 |
22 Aug 2022 @ 0929 |
BrianR |
Sporadic bursting to 6ft from main pool and the two satellite vents
Never continuous enough to be called an eruption
Satellite vents bursting fo first 10 only |
| 23345 |
21 Aug 2022 @ 1746 |
21 Aug 2022 @ 1822 |
BrianR |
Sporadic bursting to 6ft |
| 23344 |
21 Aug 2022 @ 1725 |
21 Aug 2022 @ 1730 |
BrianR |
Sporadic bursting to 4ft |
| 23311 |
21 Aug 2022 @ 0958 |
21 Aug 2022 @ 1030 |
BrianR |
Sporadic bursting to 4 ft from main pool and it’s two satellite vents
Satellite vents stopped 10:18
If would be nice to have a continuous vs sporadic type for entry |
| 22931 |
29 Jul 2022 @ 1241 |
--- |
rbwhitaker |
A couple of small splashes as Grotto was starting. |
| 19792 |
29 Sep 2021 @ 1540 |
--- |
Graham |
GF pressure pool came up slowly. SGF started splashing but it didn't erupt. Earlier GF pressure pool was rising on every cycle and SGF was erupting each cycle. |
| 19790 |
29 Sep 2021 @ 1334 |
--- |
Graham |
Splashing in South Grotto Fountain small vents. |
| 19148 |
29 Aug 2021 @ 1018 |
29 Aug 2021 @ 1048 |
BrianR |
Sporadic bursting from 2 to 10 ft |
| 19046 |
24 Aug 2021 @ 1239 |
24 Aug 2021 @ 1327 |
BrianR |
Sporadic bursting to 8 ft at beginning of window to 2 ft near end of window |
| 18639 |
24 Jul 2021 @ 1204 |
24 Jul 2021 @ 1217 |
BrianR |
Sporadic bursting to 4 ft |
| 18607 |
23 Jul 2021 @ 1319 |
23 Jul 2021 @ 1321 |
BrianR |
Sporadic bursting to 2 ft |
| 18606 |
23 Jul 2021 @ 1221 |
23 Jul 2021 @ 1229 |
BrianR |
Sporadic bursting to 8 ft |
| 18605 |
23 Jul 2021 @ 1204 |
23 Jul 2021 @ 1217 |
BrianR |
Sporadic bursting to 4 ft |
| 18597 |
22 Jul 2021 @ 1819 |
22 Jul 2021 @ 1913 |
BrianR |
Sporadic bursting to 6 ft |
| 18596 |
22 Jul 2021 @ 1151 |
22 Jul 2021 @ 1156 |
BrianR |
Sporadic bursting to 4ft |
| 18595 |
22 Jul 2021 @ 1027 |
22 Jul 2021 @ 1119 |
BrianR |
Sporadic bursting to 6 ft |
| 17981 |
21 Jun 2021 @ 1438 |
--- |
William |
more splashing to 1' |
| 17980 |
21 Jun 2021 @ 1418 |
--- |
William |
splashing to 1' |
| 15772 |
28 Aug 2020 @ 1641 |
28 Aug 2020 @ 1733 |
BrianR |
Sporadic bursting up to 6 ft at start of note to 1 ft at end |
| 15724 |
24 Aug 2020 @ 1710 |
24 Aug 2020 @ 1746 |
BrianR |
Sporadic bursting to 6 ft |
| 15722 |
24 Aug 2020 @ 1019 |
24 Aug 2020 @ 1035 |
BrianR |
Sporadic splashes 1 to 2 ft |
| 15718 |
23 Aug 2020 @ 1421 |
23 Aug 2020 @ 1431 |
BrianR |
Sporadic bursting from 2 to 4 ft |
| 15717 |
23 Aug 2020 @ 1410 |
23 Aug 2020 @ 1413 |
BrianR |
Grotto Fountain like boil |
| 15064 |
21 Jul 2020 @ 0847 |
--- |
William |
splashed to 2' but did not erupt |
| 15063 |
21 Jul 2020 @ 0842 |
--- |
William |
splashed to 2' but did not erupt |
| 14982 |
14 Jul 2020 @ 1628 |
14 Jul 2020 @ 1632 |
nails |
Intermittent splashing to a few feet |
| 14819 |
30 Jun 2020 @ 1940 |
30 Jun 2020 @ 2000 |
BrianR |
Sporadic bursting to 6 ft
Still going when I left the Grotto area |
| 14797 |
29 Jun 2020 @ 1348 |
29 Jun 2020 @ 1435 |
BrianR |
Sporadic bursting to 6 ft |
| 14742 |
26 Jun 2020 @ 1432 |
26 Jun 2020 @ 1440 |
BrianR |
Sporadic bursting to 2 ft , started and ended during Rocket Major |
| 14741 |
26 Jun 2020 @ 1359 |
26 Jun 2020 @ 1426 |
BrianR |
Sporadic bursting to 6 ft, ended when Rocket Major started |
| 13407 |
26 Aug 2019 @ 1020 |
26 Aug 2019 @ 1037 |
BrianR |
Sporadic bursting up to 6ft |
| 13403 |
25 Aug 2019 @ 1533 |
25 Aug 2019 @ 1545 |
BrianR |
Sporadic bursting to 2 ft |
| 13371 |
24 Aug 2019 @ 0730 |
24 Aug 2019 @ 0822 |
BrianR |
Sporadic bursting up to 6 ft before 8:00 up to 2 ft after |
| 13367 |
23 Aug 2019 @ 1720 |
23 Aug 2019 @ 1812 |
BrianR |
Sporadic bursting 1 to 4 ft |
| 12821 |
27 Jul 2019 @ 1330 |
27 Jul 2019 @ 1350 |
nails |
Intermittent bursting 1 to 6+ feet. |
| 11980 |
26 Jun 2019 @ 1242 |
26 Jun 2019 @ 1342 |
BrianR |
Sporadic bursting 2 to 6 ft |
| 11945 |
25 Jun 2019 @ 0648 |
25 Jun 2019 @ 0732 |
BrianR |
Sporadic bursting 2 to 6 ft |
| 11944 |
24 Jun 2019 @ 1401 |
24 Jun 2019 @ 1436 |
BrianR |
Sporadic bursting 2 to 6 ft |
| 11923 |
22 Jun 2019 @ 1241 |
22 Jun 2019 @ 1300 |
BrianR |
Sporadic bursts 2 to 3 ft |
| 11902 |
21 Jun 2019 @ 1101 |
21 Jun 2019 @ 1147 |
BrianR |
Sporadic bursting 2 to 6 ft |
| 5613 |
02 Sep 2017 @ 1745 |
--- |
WillBoekel |
weak splashing that looks like it is coming from depth. |
| 2434 |
28 Sep 2015 @ 1005 |
--- |
Tara |
Splashing to about 1 foot. |
| 854 |
03 Jul 2006 @ 0700 |
--- |
Tara |
South Grotto Fountain was active having eruptions at intervals of 7 to 15 minutes starting sometime before 0700. The eruptions alternated with high water levels in Indicator Spring and boiling episodes in Grotto Fountain. |
| 7075 |
27 Oct 1992 @ 0000 |
27 Oct 1992 @ 2359 |
JarnoO |
no time given; d=17m16s |