| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 16104 |
13 Sep 2020 @ 1205 |
--- |
Graham |
Very low water level. inactive |
| 13721 |
16 Sep 2019 @ 1009 |
--- |
Janet Jones |
Rangers at West Thumb reported that Ledge's water level started to drop last week and is now down further. When I arrived there today, it was still a clear hot blue color with bubbles rising, but the water level was about half full - a level it has been at often in the past. I did not stay to observe whether or not it might still be erupting from a lower pool. Percolating Spring was still overflowing and percolating away. Thermal features across the boardwalk (Thumb Geyser, "Waterfall," etc) had fewer microbes and slightly elevated water levels as compared to my last visit. |
| 13599 |
06 Sep 2019 @ 1320 |
06 Sep 2019 @ 1520 |
Graham |
In overflow with very small rise and fall in the pool level. No eruption. |
| 12531 |
19 Jul 2019 @ 1837 |
--- |
User34 |
First overflow |
| 11475 |
01 Jun 2019 @ 1320 |
01 Jun 2019 @ 1530 |
Graham |
Starting overflow with periodic boiling about every 10 min. Still in overflow with slightly stronger boils at 1530. |
| 11201 |
10 May 2019 @ 1237 |
--- |
Janet Jones |
It’s alive! Hot, full, boiling, and overflow channel is damp. |
| 10915 |
26 Jan 2019 @ 0945 |
26 Jan 2019 @ 1105 |
Graham |
Runoff area is washed. Pool rose from below overflow to overflow and boiling over the vent started after 1040. Could erupt any time. |
| 4537 |
25 Jul 2017 @ 1844 |
--- |
JSJ |
Damp runoff areas. Didn't stay to watch for eruptions (boardwalk closed for construction). |
| 4123 |
23 May 2017 @ 0842 |
--- |
Janet Jones |
Hot, full, boiling and the runoff channel is wet. Runoff channel carved all the way to the lower boardwalk. |
| 4101 |
19 May 2017 @ 1805 |
--- |
Tara |
Looked post eruptive. |
| 15277 |
26 Aug 1996 @ 0000 |
26 Aug 1996 @ 2359 |
JarnoO |
erupted today |