| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 39816 |
12 Jun 2025 @ 1603 |
--- |
mhreed |
Erupting out of one vent |
| 39288 |
23 May 2025 @ 0618 |
--- |
LynnS |
Right vent splashing |
| 39286 |
22 May 2025 @ 1050 |
22 May 2025 @ 1120 |
LynnS |
Intermittent splashing from the right (south) vent 4-12 inches high; some water pooled around both vents but no signs of runoff. |
| 39205 |
21 May 2025 @ 1844 |
--- |
LynnS |
Right vent splashing water 8-10 inches high, water pooling around the vent |
| 38647 |
26 Apr 2025 @ 1623 |
26 Apr 2025 @ 1635 |
DanS |
Trying to erupt. A few small splashes from South and one from North. Gurgling and Glugging. Short steam phase ends cycle. |
| 38626 |
25 Apr 2025 @ 1645 |
--- |
DanS |
Gurgling and glugging. No splashes seen during several stopovers today. Whole area surrounding seems lower energy than earlier this week. |
| 38610 |
24 Apr 2025 @ 1855 |
--- |
DanS |
Just one small splash in 5 minutes. |
| 38579 |
22 Apr 2025 @ 1830 |
--- |
DanS |
Still trying to erupt, with a few splashes but platform dry. |
| 38566 |
21 Apr 2025 @ 1740 |
21 Apr 2025 @ 1805 |
DanS |
Trying to erupt; a few small splashes from gurgling South vent plus a couple splashes from glugging North vent but no water leaving craters. |
| 38552 |
20 Apr 2025 @ 1304 |
20 Apr 2025 @ 1358 |
DanS |
Gurgling and steaming but no water seen. |
| 37632 |
18 Oct 2024 @ 1639 |
--- |
DanS |
Gurgling at depth |
| 37131 |
24 Sep 2024 @ 0828 |
--- |
TSBryan |
forceful steam from both vents for about 2 minutes |
| 36687 |
01 Sep 2024 @ 1628 |
--- |
SantaFe108 |
Splashing lazily at depth. During one of Pebble's small "eruptions", splashing became violent and loud, but still not visible, and only lasting ~10s. |
| 36253 |
03 Aug 2024 @ 1904 |
--- |
SantaFe108 |
Gurgling at depth, platform dry. |
| 35454 |
22 Jun 2024 @ 1128 |
--- |
nails |
Formation dry, gurgling |
| 34524 |
11 May 2024 @ 1357 |
--- |
DanS |
Gurgling and puffing steam. Can hear water splashing in South vent, but not being ejected. Platform dry. |
| 34508 |
10 May 2024 @ 1446 |
--- |
DanS |
Platform dry. Gurgling at depth and puffs of steam but no water being ejected. Same at 1607. |
| 34464 |
05 May 2024 @ 1755 |
--- |
SantaFe108 |
Gurgling loudly, area surrounding vents bone dry. |
| 28350 |
19 Sep 2023 @ 1530 |
--- |
DanS |
Gurgling at depth. |
| 27510 |
10 Aug 2023 @ 1745 |
--- |
JSJ |
Subterranean gurgling. Very light steaming from both vents. |
| 25839 |
28 May 2023 @ 0718 |
--- |
TSBryan |
puffs of steam from both vents but the surrounding flowers are blooming |
| 24454 |
21 Oct 2022 @ 1034 |
--- |
DanS |
Both vents gurgling |
| 24455 |
21 Oct 2022 @ 1034 |
--- |
DanS |
Both vents gurgling |
| 24219 |
04 Oct 2022 @ 1116 |
--- |
DanS |
Bubbling and steaming from both vents |
| 20130 |
26 Oct 2021 @ 1040 |
--- |
DanS |
Gurgling and steam pushes from both vents. |
| 17294 |
30 May 2021 @ 1210 |
--- |
JSJ |
Flowers growing in basin. Moderately soft burbling with occasional louder gurgling. |
| 16218 |
21 Sep 2020 @ 1002 |
--- |
DanS |
Burbling at depth. |
| 14458 |
31 May 2020 @ 0835 |
--- |
DanS |
Dry with flowers growing in it |
| 11575 |
03 Jun 2019 @ 1751 |
--- |
JSJ |
Flowers growing in Gemini's basin. Subterranean gurgling. |
| 10355 |
16 Sep 2018 @ 1246 |
--- |
Siegmund |
Bone dry. |
| 6400 |
15 Sep 2017 @ 1145 |
--- |
TSBryan |
Burst of water 1 to 2 feet high from high vent. |
| 6402 |
15 Sep 2017 @ 1120 |
--- |
TSBryan |
"Trying" to erupt. See Pebble Geyser notes. |
| 5290 |
23 Aug 2017 @ 1131 |
--- |
imapayne |
gurgling and some spitting above the rim. |
| 4258 |
07 Jun 2017 @ 2056 |
--- |
JSJ |
Gemini has visible, low, intermittent splashing/low spouting from BOTH vents - not kidding. This happened for about 0.5m from 2056 to 2057. |
| 4184 |
02 Jun 2017 @ 1809 |
--- |
JSJ |
Gemini Geyser's basin was bone dry. Southeastern vent was damp/wet, with constant subterranean gurgling. Occasional visible very low spouting from southeastern vent. |
| 3815 |
26 Oct 2016 @ 1100 |
--- |
DanS |
Noisy but no surface water. |
| 3249 |
07 Jul 2016 @ 2020 |
07 Jul 2016 @ 2115 |
JSJ |
Subterranean gurgling from the southeastern vent. |
| 2938 |
01 Jun 2016 @ 2040 |
01 Jun 2016 @ 2129 |
JSJ |
Subterranean gurgling. Pool and runoff channel dry. |
| 2505 |
10 Oct 2015 @ 1207 |
10 Oct 2015 @ 1615 |
Siegmund |
Gemini empty and the formation bone dry every time I drove past today. |
| 2131 |
16 Aug 2015 @ 1800 |
16 Aug 2015 @ 2028 |
JSJ |
Gemini crashes/drains from 1800 to 2028. |
| 2140 |
15 Aug 2015 @ 1937 |
15 Aug 2015 @ 2040 |
JSJ |
Seven Gemini crashes/drains from 1937 to 2040 - at 1937, 1948, 1959, 2010, 2025, 2032, and 2040. |
| 2119 |
14 Aug 2015 @ 0059 |
--- |
JSJ |
Crash/drain at 0059. |
| 2118 |
14 Aug 2015 @ 0045 |
--- |
JSJ |
Crash/drain at 0045. |
| 2117 |
13 Aug 2015 @ 2223 |
13 Aug 2015 @ 2248 |
JSJ |
Crash/drain between 2223 and 2248. |
| 2116 |
13 Aug 2015 @ 2159 |
13 Aug 2015 @ 2222 |
JSJ |
Crashes/drains from 2159 to 2222. |
| 2114 |
13 Aug 2015 @ 2133 |
--- |
JSJ |
Crash/drain at 2133. |
| 2108 |
12 Aug 2015 @ 2219 |
12 Aug 2015 @ 2232 |
JSJ |
Two Gemini Geyser crashes/drains - at 2219 & 2232. |
| 2105 |
12 Aug 2015 @ 1931 |
12 Aug 2015 @ 2033 |
JSJ |
Gemini Geyser crashes/drains from 1931 to 2033. |
| 2095 |
12 Aug 2015 @ 0015 |
--- |
JSJ |
Gemini Geyser crash/drain at 0015. |
| 2094 |
11 Aug 2015 @ 2342 |
--- |
JSJ |
Gemini Geyser crash/drain at 2342. |
| 2093 |
11 Aug 2015 @ 2300 |
11 Aug 2015 @ 2310 |
JSJ |
Two Gemini Geyser crashes/drains - at 2300 and 2310. |
| 2092 |
11 Aug 2015 @ 2207 |
--- |
JSJ |
Gemini Geyser crash/drain from a below-half filled pool & bouncing northwestern vent. |
| 2091 |
11 Aug 2015 @ 2130 |
11 Aug 2015 @ 2146 |
JSJ |
Three Gemini Geyser crashes/drains at 2130, 2136, and 2146. |
| 2090 |
11 Aug 2015 @ 1949 |
11 Aug 2015 @ 2040 |
JSJ |
Four Gemini Geyser crashes/drains between 1949 & 2040. Directly observed crashes at 2005, 2016, and ~~2030. Was another crash between 1949 & 2005. |
| 2075 |
09 Aug 2015 @ 2128 |
09 Aug 2015 @ 2150 |
JSJ |
Gemini crashes/drains at 2128 & before 2150, when an eruption occurred. |
| 2064 |
08 Aug 2015 @ 2058 |
--- |
JSJ |
Crash/drain from a Gemini Geyser full pool & both vents in very low spouting. |
| 2063 |
08 Aug 2015 @ 2040 |
--- |
JSJ |
Crash/drain from a Gemini Geyser full pool & both vents in very low spouting. |
| 2061 |
08 Aug 2015 @ 1857 |
08 Aug 2015 @ 1931 |
JSJ |
Crashes/drains from a Gemini Geyser full pool & both vents in very low spouting at 1857, 1907, 1919, and 1931. |
| 2477 |
08 Aug 2015 @ 1557 |
08 Aug 2015 @ 1715 |
JSJ |
Gemini crash/drain events noticed at 1557, 1639, and 1715. |
| 2053 |
08 Aug 2015 @ 1202 |
08 Aug 2015 @ 1236 |
JSJ |
Four Gemini Geyser crashes/drains from full pool & both vents in very low spouting at 1202, 1212, 1224, and 1236. |
| 2048 |
07 Aug 2015 @ 2220 |
07 Aug 2015 @ 2243 |
JSJ |
Gemini crashes/drains at 2220 & 2231 & 2243. |
| 2047 |
07 Aug 2015 @ 2156 |
--- |
JSJ |
Gemini crash/drain at 2156. |
| 2046 |
07 Aug 2015 @ 2118 |
--- |
JSJ |
Gemini crash/drain at 2118. |
| 2045 |
07 Aug 2015 @ 2107 |
--- |
JSJ |
Gemini crash/drain at 2107. |
| 2036 |
06 Aug 2015 @ 2054 |
--- |
JSJ |
Crash/drain at 2054 between the 4th and 5th eruptions of a Gemini series from 2008 to 2106. |
| 1918 |
14 Jul 2015 @ 0820 |
14 Jul 2015 @ 1345 |
LynnS |
I left Gemini at 0820 and did not return until 1345, so did not have it under observation during this time. |
| 1852 |
06 Jul 2015 @ 1836 |
06 Jul 2015 @ 1914 |
JSJ |
Gemini Geyser engaged in preplay & basin filling, but drained instead of erupting - observed at 1836 & 1900 & 1914. |
| 1826 |
02 Jul 2015 @ 1326 |
--- |
Graham |
Gemini drained 1326, had a series during Fountains eruption, Pebble was high before Fountain and low afterwards. |
| 1659 |
28 May 2015 @ 1845 |
28 May 2015 @ 2238 |
LynnS |
I left Gemini at 1640 after the series that started at 1531 ended. When I returned at 1845 Pebble's water level was above the west crack, but still below the orange rock we have been using to measure water levels. The height of Pebble's water indicated Gemini had not erupted while I was gone. Over the next hour Pebble's water level slowly rose until it went into overflow at 1948. When I left t 22:38 Gemini had still not yet erupted. |
| 1640 |
25 May 2015 @ 2035 |
--- |
Gilbert |
Great double rainbow arched over Gemini when it finished its series |
| 1194 |
02 Sep 2014 @ 2220 |
--- |
Micah Kipple |
Evil vent was erulting when i drove by @ 2220ish however pebble spring was still full so perhaps i just missed another series |
| 1798 |
14 Sep 2010 @ 0000 |
--- |
LynnS |
I saw one Gemini series on 9/14 with intervals of 8-10 minutes. |
| 1797 |
01 Sep 2010 @ 0000 |
--- |
LynnS |
Gemini was active at about 0630 |
| 1796 |
31 Aug 2010 @ 1200 |
--- |
LynnS |
Gemini was active around noon. |
| 1795 |
08 Aug 2010 @ 0000 |
--- |
LynnS |
Steve Eide saw Gemini erupt on 8/8/2010 |
| 1794 |
07 Aug 2010 @ 0000 |
--- |
LynnS |
Steve Eide saw Gemini on 8/7. |
| 1793 |
02 Aug 2010 @ 0000 |
--- |
LynnS |
Jim Scheir caught a series of Gemini on 8/2/2010 |
| 1807 |
29 May 2010 @ 1150 |
29 May 2010 @ 1207 |
LynnS |
Gemini's "right" vent was active 1153-1158, 1200-1203, 1204-1205, 1206-1207 |
| 15249 |
27 Jun 1996 @ 0000 |
27 Jun 1996 @ 2359 |
JarnoO |
active |
| 15225 |
27 May 1996 @ 0000 |
27 May 1996 @ 2359 |
JarnoO |
active |