Last Known Eruption
138d 15h 8m ago

Latest Eruptions

Eruption DurationInterval
06 Oct 2023 @ 1434~2m 31m
06 Oct 2023 @ 1403~2m 23h 55m
05 Oct 2023 @ 1407:32~1m 55s 27m 27s
05 Oct 2023 @ 1340:05~1m 50s 40m 53s
05 Oct 2023 @ 1259:121m 47s 29m 52s
05 Oct 2023 @ 1229:20~1m 50s 33m 53s
05 Oct 2023 @ 1155:271m 49s 44m 3s
05 Oct 2023 @ 1111:24~2m 0s 34m
05 Oct 2023 @ 1037~1m 45s 33d 19h 34m
01 Sep 2023 @ 15032d 22h 46m
29 Aug 2023 @ 161732m
29 Aug 2023 @ 154538m
29 Aug 2023 @ 150741m
29 Aug 2023 @ 14261d 3h 18m
28 Aug 2023 @ 110833m
28 Aug 2023 @ 103544m
28 Aug 2023 @ 09519d 22h 44m
18 Aug 2023 @ 110734m
18 Aug 2023 @ 103331m
18 Aug 2023 @ 10021h 13m
18 Aug 2023 @ 08496d 14m
12 Aug 2023 @ 083517d 16h 20m
25 Jul 2023 @ 161532m
25 Jul 2023 @ 15431h 9m
25 Jul 2023 @ 143423d 20h 59m
01 Jul 2023 @ 173535m
01 Jul 2023 @ 1700 ie1h 3m
01 Jul 2023 @ 15576d 21h 52m
24 Jun 2023 @ 180534m
24 Jun 2023 @ 17314d 1h 59m
20 Jun 2023 @ 15322m 36m
20 Jun 2023 @ 14562m 44m
20 Jun 2023 @ 14122m 263d 6h 48m
30 Sep 2022 @ 07243m 3d 14h 34m
26 Sep 2022 @ 16503m 3d 9h 48m
23 Sep 2022 @ 0702 ie12h 37m
22 Sep 2022 @ 1825 ie5y 358d 7h 14m
30 Sep 2016 @ 1111~55s 40d 18h 3m
20 Aug 2016 @ 170820d 23h 55m
30 Jul 2016 @ 1713~20s 279d 23h 1m
24 Oct 2015 @ 1812132d 22h 13m
13 Jun 2015 @ 1958:1030s 2d 3h 2m
11 Jun 2015 @ 1656 ie239d 6h 47m
15 Oct 2014 @ 10091y 41d 19h 8m
03 Sep 2013 @ 15011h 1m
03 Sep 2013 @ 140055m
03 Sep 2013 @ 130550m
03 Sep 2013 @ 12151d 16h 48m
01 Sep 2013 @ 19278d 9h 19m
24 Aug 2013 @ 10081d 14h 29m
22 Aug 2013 @ 193920y 41d 4h 51m
17 Jul 1993 @ 144834m
17 Jul 1993 @ 141435m
17 Jul 1993 @ 133934m
17 Jul 1993 @ 13051y 11d 22h 2m
05 Jul 1992 @ 15031h 5m
05 Jul 1992 @ 135858m
05 Jul 1992 @ 13001h 9m
05 Jul 1992 @ 115111h 32m
05 Jul 1992 @ 001936m
04 Jul 1992 @ 23431h 5m
04 Jul 1992 @ 223819y 5d 12h 43m
04 Jul 1973 @ 09551d 19h 48m
02 Jul 1973 @ 140713m
02 Jul 1973 @ 13547d 59m
25 Jun 1973 @ 12556d 18h 38m
18 Jun 1973 @ 18175d 1h 16m
13 Jun 1973 @ 17011m 12s 17m
13 Jun 1973 @ 16441m 23s 330d 23h 59m
17 Jul 1972 @ 164522m
17 Jul 1972 @ 162318m
17 Jul 1972 @ 1605

Interval Statistics

Interval Count71
Min13m
Max20y 41d 4h 51m
Mean263d 11h 48m
Median1h 9m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
34007 08 Feb 2024 @ 1426 08 Feb 2024 @ 1526 aferrara Steadily filling with water, rose Abt 1' over the hour.
33779 12 Jan 2024 @ 1440 --- Graham Snow washed from its eruption channel to the left.
28452 24 Sep 2023 @ 1617 --- Graham Bubbling on left side in a stall. Overflowing and runoff channel very wet. Good bubbling but no eruption while I was there before Clepsydra came on steady at 1744.
28308 17 Sep 2023 @ 1000 --- Graham Overflowing into the left channel. during a stall. This channel used to only be active only during eruptions in June, but now it's active earlier.
28264 15 Sep 2023 @ 0727 --- Graham Eruption runoff channel looks wet. Jelly overflowing heavily and dropped a little later but still in overflow.
27962 02 Sep 2023 @ 1926 --- SantaFe108 ~4 inches below overflow.
27833 28 Aug 2023 @ 1120 28 Aug 2023 @ 1245 LynnS Break in data collection
27659 17 Aug 2023 @ 0650 17 Aug 2023 @ 0710 LynnS Jelly’s crater was about 3/4 full. When Clepsydra resumed full activity, water level in Jelly rose. At 7:10 it was only 4-5 inches below overflow.
27446 06 Aug 2023 @ 1030 --- LynnS Almost brim full
27052 13 Jul 2023 @ 0630 13 Jul 2023 @ 0925 LynnS Full and overflowing prior to and during Fountain’s eruption. Still in overflow 0925.
26773 01 Jul 2023 @ 1358 --- Graham Start of overflow. Hard to see bubbles due to the wind. 1510 nice. bubbles on left side causing surface ripples. 1513 strong bubble stream on left. Strong bubbles every few minutes.
26735 29 Jun 2023 @ 0840 --- Graham Water level rose from below the beach to nearly full over last 2h in the stall. Once Clepsydra came on strong and Spasm dropped, Jelly rose within an inch or two of oveedlkw and is holding that level. Occasional bubbles near the overflow spots. 0915 occasional bubbles near front of pool. Nothing in the usual left side spots. 1000 slowly dropping. 1053 water at top of beach. 1120 mid beach. 1150 low beach as Spasm starts.
26647 24 Jun 2023 @ 1440 --- Graham Start of Jelly overflow with Spasm overflowing. Bubbling near the overflow points. 1454 a few small bubbles on the left side. 1525 occasional big bubbles on the left side. 1640 strong bubbling episodes on left. 1619 line of bubbles on let and a bubblestream constant. 1703 strong bubbling left side every 1 to 2m.
26601 22 Jun 2023 @ 1802 --- Graham Start of overflow, 55m after Spasm started. 1808 started down second runoff channel. Dropped 1830 after Spasm quit.
26565 21 Jun 2023 @ 1054 21 Jun 2023 @ 1254 Craigmon99 Jelly has been attempting to erupt during this time period. Did not erupt again for me but I can only be so greedy :). Fountain stall still in effect. If you see this note within an hour or two of this note posting and you want to catch jelly, could be a good time.
26563 21 Jun 2023 @ 1116 --- Craigmon99 Strong bubbling back of pool at the time
26561 21 Jun 2023 @ 1059 --- Craigmon99 Eruption runoff channel is wet Very high, very blue. Bubbles in the back pool. Spasm is erupting and pushing runoff into it but learned yesterday that this is not a lbs issue for jelly
26529 20 Jun 2023 @ 1635 --- Craigmon99 After clepsydra started indefinitely jelly is still in overflow but has made no attempt at erupting
26525 20 Jun 2023 @ 1556 --- Craigmon99 First jelly push with bubbles and strong convection
26523 20 Jun 2023 @ 1544 --- Craigmon99 In overflow already
26520 20 Jun 2023 @ 1455 --- Craigmon99 Marked rapid increase in bubbles left pool
26517 20 Jun 2023 @ 1420 --- Craigmon99 Already back in overflow with bubbling in left
26515 20 Jun 2023 @ 1350 --- Craigmon99 Boiling increased during Clepsydra pause
26514 20 Jun 2023 @ 1338 --- Craigmon99 Bubbling in left of pool increased
26511 20 Jun 2023 @ 1207 --- Craigmon99 Start of bubbling
26510 20 Jun 2023 @ 1147 --- Craigmon99 In overflow likely from Spasm runoff Edit: not spasm runoff
26023 04 Jun 2023 @ 1612 --- Graham Stayed up after aborted stall Fountain and is in overflow with bubbling on the left side. Water level is lower than the earlier episode today. 1618 bubbling strongly evwry 2m even though Clepsydra has come on strong. 1645 bubbling has diminished but the pool is still overflowing.
26022 04 Jun 2023 @ 1116 --- Graham Occasional bubbles near the runoff areas in the back of the pool. 1204 some small bubbles on the left side. 1209 bubbles on left almost continuous. 1233 line of bubbles on left side plus bubbles in other spots. 1235 brief big bubble stream in left side. Also 1237, hard to watch with sun on it and other activity around, 1246, 1257, 1303, 1313, 1315, 1316, 1320, 1321, 1322, 1324, 1329, 1337, 1340, 1341, 1342, 1350, 1359, 1400, 1408, 1409, 1410, 1416, 1417. 1418, 1426, 1427, 1428, 1436, 1437,
26024 04 Jun 2023 @ 1116 --- Graham Occasional bubbles near the runoff areas in the back of the pool. 1204 some small bubbles on the left side. 1209 bubbles on left almost continuous. 1233 line of bubbles on left side plus bubbles in other spots. 1235 brief big bubble stream in left side. Also 1237, hard to watch with sun on it and other activity around, 1246, 1257, 1303, 1313, 1315, 1316, 1320, 1321, 1322, 1324, 1329, 1337, 1340, 1341, 1342, 1350, 1359, 1400, 1408, 1409, 1410, 1416, 1417. 1418, 1426, 1427, 1428, 1436, 1437,
25824 27 May 2023 @ 1835 --- Graham Bubbles near runoff points on far side
25728 23 May 2023 @ 1437 --- Graham Some bubbles are visible when it's not windy. Near the overflow points in the back. Not seeing bubbles on the left yet.
25701 22 May 2023 @ 1412 --- Ajw Pool full from Spasm runoff, no bubbling in pool. Pretty blue color, very clear.
25623 20 May 2023 @ 1800 --- Graham Continuous bubbling and convection during a stall with Clepsydra pausing a lot. Prior to this, it was intermittent bubbling. Activity increased until Fountain erupted at 1923 and Jelly did not.
24922 16 Jan 2023 @ 1440 --- Graham Close to overflow without Spasm erupting. Spasm was starting to steam at 1500.
24239 05 Oct 2022 @ 1137 --- steve After Spasm stopped and dropped Jelly stayed in light overflow for several minutes.
24127 26 Sep 2022 @ 1516 --- Graham Bubbling left side strong enough to break the surface and send out a small wave. Main action is over the left edge of the deep part of the crater, close to the first overflow channel (the nearest/leftmost of 3 channels on the far side of the pool). Little bubbles coming up every minute with a series of bubbles all at once breaking the surface every minute or two. Strength of the bubbling slowly increased. 1538 bubbling in a line on left side and in the middle while still having the bubble series that break the surface in the same left spot as earlier. 1640 more bubbling close to the boardwalk, this is the first time it has been frequent here. 1650 bubbles everywhere, small flood, thumps, and start of the eruption.
24105 25 Sep 2022 @ 1900 --- CrisG full and overflowing. no bubbling noted.
24022 23 Sep 2022 @ 1435 --- Graham First overflow 39m after Spasm started.
24018 23 Sep 2022 @ 1155 --- Graham Slowly dropped just below beach from Fountain till now. Just started to rise a little
23739 11 Sep 2022 @ 1920 --- SantaFe108 Full and overflowing.
23762 11 Sep 2022 @ 1627 --- steve Jelly is full and overflowing before Spasm has started to overflow. No noticeable convection in the pool.
23609 06 Sep 2022 @ 1245 --- Graham Close to full with Spasm overflow.
23606 06 Sep 2022 @ 0627 --- Graham High water, just below overflow. Spasm empty.
23429 27 Aug 2022 @ 1505 --- SantaFe108 Full and in overflow.
21932 11 Jun 2022 @ 0655 --- LynnS Full and overflowing
21898 10 Jun 2022 @ 0837 --- Graham In overflow during stall. Not sure when it started, Spasm has been ie and overflowing for a while.
21684 03 Jun 2022 @ 0730 --- BrandonC In overflow
21405 21 May 2022 @ 1259 21 May 2022 @ 1725 Graham Stayed up even after Spasm drained. Still up as Spasm starts its next eruption and overflows into Jelly. Dropped below overflow 1725.
20848 25 Feb 2022 @ 1346 --- aferrara Pool full
19988 15 Oct 2021 @ 1804 --- Tara no visible water
19985 15 Oct 2021 @ 1640 --- Tara water level just barely visible
19987 15 Oct 2021 @ 1310 --- Tara no visible water level
19534 13 Sep 2021 @ 0907 --- Graham Recently went into overflow. Jist below overflow after Fountain while Spasm still ie. Stayed up when Spasm quit. 1210 dropping now.
19400 09 Sep 2021 @ 0850 --- Graham Recently went into overflow. Dropped just below overflow during Fountain eruption but Spasm is still erupting and in overflow.
19257 03 Sep 2021 @ 1059 --- Graham Dropping after Fountain even tho Spasm is still ie and overflowing into it. Also drained during 1505 eruption while Spasm was still ie.
19210 31 Aug 2021 @ 2030 --- Graham Spasm has drained but Jelly stayed up, just below overflow.
18633 24 Jul 2021 @ 0855 --- LynnS Water is about 3 feet below rim
18629 24 Jul 2021 @ 0610 --- LynnS Completely empty, absolutely no water visible
18193 29 Jun 2021 @ 1732 --- Tara filled with runoff from Spasm & overflowing
18072 24 Jun 2021 @ 0804 --- Graham Very high water, near the rim. Spasm out of sight. First time I have seen Jelly up this trip.
14856 02 Jul 2020 @ 0908 --- Graham No water visible at all.
14663 18 Jun 2020 @ 0705 --- LynnS Crater has small amount of water in bottom of crater
13876 04 Oct 2019 @ 1800 --- Tara Full & overflowing with Spasm flowing into it
11541 03 Jun 2019 @ 0527 --- Graham High water, beach almost covered. Spasm drained. Water level is dropping. 0609 dropped to the white ring at the top of the vent, at the end of the beach. 0645 stopped dropping. 0713 rising close to the white ring.
11471 01 Jun 2019 @ 0800 --- Graham Water at the transition from the flat beach to the inner tube. Spasm empty. 0840 slowly rising, Spasm still off. Beach is completley coverwd by 0945. 1012 light convection on the pool. 1019 Spasm runoff starts to flow into Jelly. 1102 overflowing toward Frolic. This is the first time I have seen Jelly fill this week on its own.
11459 31 May 2019 @ 1457 --- Graham High water and Spasm is empty, Spasm likely ended an eruption recently. 1600 water has dropped down into the smaller low tube. Filled up to the top of the white ring 1729, Spasm still not in overflow.
10643 21 Oct 2018 @ 0851 --- rbwhitaker No water visible. Crater and surrounding area dry.
629 09 Jan 2011 @ 1530 --- BoekelUpload full 1530
7546 17 Apr 1976 @ 0000 17 Apr 1976 @ 2359 JSJ 17 April 1976 - Jelly Geyser became active with full eruptions after being dormant most of the winter.
No attachments for this geyser.
Baseline does not exist.