| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 35652 |
30 Jun 2024 @ 1102 |
--- |
Janet Jones |
Standing water in the overflow channels that could only have water in them from an eruption. Still active. |
| 35526 |
24 Jun 2024 @ 1730 |
24 Jun 2024 @ 2035 |
Craigmon99 |
Walked up to heavy overflow and eruptive vent boiling.
1739 boiling ceased. Still in heavy overflow
1740 boiling over eruptive vent back on and strong.
1742 bowling ball diameter boil
1746 boil has weakened but pool level still looks good. Heavy overflow continues
1748 eruptive vent ceased. Central vent gently boiling. Heavy overflow continues
1752 eruptive vent boiling begins again. Overflow unchanged
1755 eruptive vent bowling ball sized and strong
1759 EV boil weakened substantially. Pool remains at good overflow.
1800 boil gone. Extremely windy out. Maybe effecting? Cannot say though
1803 EV on
1806 bowling ball sized heavy boil from EV
1810 EV boiling decrease drastically since heavy wind. Pool level still does increase with each push however.
1814 EV back on after blooping from central vent
1821 EV boil off. CV beginning gentle boil. For context, helicopter strong winds are in basin. One of the main directions however, is directly against the flooding action that starts at the beginning of an eruption.
1829 EV boil begins. Wind is lighter.
1831 Subaudible thumping sounds from Collapsing Pool
1835 EV Fail. Runoff remains heavy from main channel
1841 EV on.
1853 ev still on. Strong. Good push. Signs look good
1856 ev off. Spoke too soon!
1902 ev on
1912 ev off
1919 ev on
1925 ev off
1932 ev on
1930 ev off
1944 ev on
2021 ev still on variable. No eruption yet
2034 ev still on from last note. Heading out due to bugs and general hunger. Of note: Collapsing Pool’s overflow channel has water almost to boardwalk now. |
| 35515 |
24 Jun 2024 @ 0917 |
--- |
Craigmon99 |
Pooling raising after last eruption. No overflow yet. Pool is pulsing upwards
0923 boiling has calmed, but pool continues to rise
0925: almost at overflow. Rolling boil in center occasionally
0927: overflow begins into main channel. Heavy push this time. No hesitance.
0929: heavy large splashy boil. Thought this was going to start eruption. Pool level dropped below overflow.
0931: pool continues bowling ball diameter boil. Still below overflow
0935: boil is still strong as if preeruptive but still below overflow
0940: boil weakening substantially over eruptive vent. Boil over central vent beginning and intermittent.
0956: in overflow. Light overflow
1000: medium overflow
1005: medium heavy overflow
1007: heavy overflow (both sides of far rock have flow) Occasional rolling boil from center continues. Nothing from eruptive vent since last mention
1010: convection from eruptive vent
1024: central vent more rolling boils. Eruptive vent a few bubbles seen but convection mostly
1029: central vent upwelling and rolling boil stronger
1034: eruptive vent boiling strong
1036: bowling ball size boil over eruptive vent |
| 35490 |
23 Jun 2024 @ 1043 |
--- |
Janet Jones |
Ledge still below overflow. I left to document the lower section of the basin. |
| 35489 |
23 Jun 2024 @ 1029 |
--- |
Janet Jones |
Ledge was below overflow, however water stood in many places in the wide area where water overflows when an eruption occurs - indicating it's possibly active. I went to finish photo documentation of the upper half with a plan to check back before documenting the lower half. |
| 34761 |
30 May 2024 @ 0909 |
--- |
Graham |
In steady overflow and hot. No indication of eruption recently, washbarea is dry and lots of small decayed sinter. |
| 34501 |
10 May 2024 @ 1305 |
--- |
Janet Jones |
Steady overflow with microbes growing in the overflow channel. Blue, clear water and bubbles rising steadily. Was there for five minutes with no change in behavior. |
| 26928 |
08 Jul 2023 @ 1556 |
--- |
nails |
Many feet below overflow. Water is brown with some green color. Occasional bubbles. |
| 24243 |
05 Oct 2022 @ 1317 |
--- |
WillBoekel |
not active has green bacteria growing around edge |
| 23357 |
23 Aug 2022 @ 0830 |
--- |
Craigmon99 |
Bench in between collapsing spring and ledge spring wet. Rest of boardwalk dry |
| 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 |