| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 41146 |
18 Aug 2025 @ 1310 |
18 Aug 2025 @ 1514 |
LynnS |
These are all closed intervals. |
| 40818 |
05 Aug 2025 @ 1050 |
05 Aug 2025 @ 1431 |
JSJ |
All closed intervals. Viewed from the Stock Bridge Trail, near the closed back entrance to Biscuit Basin. |
| 40802 |
04 Aug 2025 @ 1017 |
04 Aug 2025 @ 1257 |
JSJ |
Seen from the Artemisia Trail near Cauliflower Geyser. |
| 34894 |
04 Jun 2024 @ 1011 |
04 Jun 2024 @ 1410 |
JSJ |
All closed intervals. |
| 13153 |
10 Aug 2019 @ 1547 |
10 Aug 2019 @ 1632 |
JSJ |
Inclinometer readings: 1547-1548 eruption's highest water ~23 feet. 1632-1633 eruption's highest water ~22 feet. |
| 750 |
24 Jan 2013 @ 0000 |
24 Jan 2013 @ 2359 |
Graham |
Note the intervals were all closed intervals. Intervals are twice as long as in the fall. |
| 140 |
12 Mar 2012 @ 1215 |
--- |
ofcarolyn |
Black Diamond reported by guide about 1215; other guides reported clear, turquoise water on 3/10, murky water with muddy runoff on 3/11 (I observed this also, later in the afternoon) |
| 12187 |
07 May 1993 @ 1830 |
--- |
JarnoO |
still empty |