| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 21959 |
12 Jun 2022 @ 1542 |
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aferrara |
Water boiling up above vent rim |
| 20807 |
12 Feb 2022 @ 1050 |
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aferrara |
Water visibly boiling in cone |
| 20611 |
09 Dec 2021 @ 1207 |
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JarnoO |
(wc) At 1207, following Lion's 1205 minor eruption, both Lioness and Big Cub became very steamy to the point there were hints to a billowing steam plume. Lioness put up a wide, dense plume and shrunk magnitudes after Lion had its first roar since the minor early 1208. |
| 16060 |
11 Sep 2020 @ 1322 |
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DanS |
Audible boiling and a few small splashes. Again at 1329. |
| 11532 |
02 Jun 2019 @ 1832 |
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JSJ |
Spitting water (seen through steam) at 1832, 1837, and 1910. |
| 16725 |
24 Sep 1998 @ 1847 |
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JarnoO |
several 1 m bursts |