Last Known Eruption
66d 15h 42m ago

Latest Eruptions

Eruption DurationInterval
22 Jan 2023 @ 1254 ie3d 23h 38m
18 Jan 2023 @ 1316 ie17d 23h 9m
31 Dec 2022 @ 140775d 23h 14m
16 Oct 2022 @ 1553 maj9m
16 Oct 2022 @ 15443d 23m
13 Oct 2022 @ 152111m
13 Oct 2022 @ 15105d 21h 3m
07 Oct 2022 @ 18078m
07 Oct 2022 @ 17594m
07 Oct 2022 @ 17553d 21m
04 Oct 2022 @ 17347m
04 Oct 2022 @ 172723h 46m
03 Oct 2022 @ 17412h 33m
03 Oct 2022 @ 1508 ie3h 48m
03 Oct 2022 @ 112018h 31m
02 Oct 2022 @ 16497m
02 Oct 2022 @ 16429m
02 Oct 2022 @ 16335m
02 Oct 2022 @ 162812m
02 Oct 2022 @ 16168m
02 Oct 2022 @ 160810m
02 Oct 2022 @ 15587m
02 Oct 2022 @ 15516m
02 Oct 2022 @ 15458m
02 Oct 2022 @ 153711m
02 Oct 2022 @ 15269m
02 Oct 2022 @ 15175m
02 Oct 2022 @ 15126m
02 Oct 2022 @ 15067m
02 Oct 2022 @ 145910m
02 Oct 2022 @ 14497m
02 Oct 2022 @ 14426m
02 Oct 2022 @ 14364m
02 Oct 2022 @ 14328m
02 Oct 2022 @ 142410m
02 Oct 2022 @ 14148m
02 Oct 2022 @ 14061d 22h 4m
30 Sep 2022 @ 1602 maj10m
30 Sep 2022 @ 15523m 11m
30 Sep 2022 @ 15415m 12m
30 Sep 2022 @ 15294m 14m
30 Sep 2022 @ 15156m 13m
30 Sep 2022 @ 15025m 10m
30 Sep 2022 @ 14524m 12m
30 Sep 2022 @ 14406m 8m
30 Sep 2022 @ 14322m 6h 41m
30 Sep 2022 @ 0751 maj6h 33m 10m
30 Sep 2022 @ 07415m 6m
30 Sep 2022 @ 07353m 8m
30 Sep 2022 @ 07274m 7m
30 Sep 2022 @ 07204m 9m
30 Sep 2022 @ 07115m 7m
30 Sep 2022 @ 07044m 8m
30 Sep 2022 @ 06564m 10m
30 Sep 2022 @ 06465m 9m
30 Sep 2022 @ 06374m 7m
30 Sep 2022 @ 06303m 6m
30 Sep 2022 @ 06243m 5m
30 Sep 2022 @ 06193m 19h 53m
29 Sep 2022 @ 10268m
29 Sep 2022 @ 10182m 15h 48m
28 Sep 2022 @ 1830<6m 13m
28 Sep 2022 @ 18174m 14m
28 Sep 2022 @ 18035m 12m
28 Sep 2022 @ 17514m 14m
28 Sep 2022 @ 17375m 5h 30m
28 Sep 2022 @ 1207 maj5h 15m 8m
28 Sep 2022 @ 11593m 6h 12m
28 Sep 2022 @ 0547 ie maj>6h 5m 15h 7m
27 Sep 2022 @ 1440 ie maj3h 47m
27 Sep 2022 @ 105313m
27 Sep 2022 @ 10405m 13m
27 Sep 2022 @ 10273m 12m
27 Sep 2022 @ 10155m 10m
27 Sep 2022 @ 10054m 17h 14m
26 Sep 2022 @ 1651 maj9m
26 Sep 2022 @ 16425m 7m
26 Sep 2022 @ 16354m 9m
26 Sep 2022 @ 16265m 9m
26 Sep 2022 @ 16174m 9m
26 Sep 2022 @ 16085m 11m
26 Sep 2022 @ 15576m 10m
26 Sep 2022 @ 15475m 9m
26 Sep 2022 @ 15385m 8m
26 Sep 2022 @ 15305m 9m
26 Sep 2022 @ 15215m 11m
26 Sep 2022 @ 15106m 6m
26 Sep 2022 @ 15049m
26 Sep 2022 @ 14554m 9m
26 Sep 2022 @ 14464m 7m
26 Sep 2022 @ 14394m 12m
26 Sep 2022 @ 14276m 8m
26 Sep 2022 @ 14193m 8m
26 Sep 2022 @ 14113m 11m
26 Sep 2022 @ 14004m 13m
26 Sep 2022 @ 13475m 10m
26 Sep 2022 @ 13374m 9m
26 Sep 2022 @ 13283m 14m
26 Sep 2022 @ 13145m 13m
26 Sep 2022 @ 13015m 14m

Interval Statistics

Interval Count100
Min4m
Max75d 23h 14m
Mean1d 4h 19m
Median10m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
24811 31 Dec 2022 @ 1402 --- aferrara clep off
24800 26 Dec 2022 @ 1203 --- mhvogel Clepsydra off
24514 29 Oct 2022 @ 1500 --- steve Clepsydra is on, PEANOT, SFP, Spasm, and Jelly are off. Jelly is full and in overflow from its own source. Jet sounds like it is trying to start. Spasm is about half full. Water is visible in Morning from the top of the stairs. I never could be sure if I saw water in Fountain due to the steam.
24423 16 Oct 2022 @ 1547 --- Tara second pause
24704 16 Oct 2022 @ 1547 --- Tara Start of 2nd pause after Fountain
24422 16 Oct 2022 @ 1539 --- Tara first pause
24703 16 Oct 2022 @ 1539 --- Tara Start of 1st pause after Fountain
24415 16 Oct 2022 @ 0745 --- User34 On strong, not pausing, side vent full and active
24372 14 Oct 2022 @ 1650 --- Tara on steady by this time, unsure when continuous activity began
24370 14 Oct 2022 @ 1415 --- Tara in long pause mode, Spasm rising with clear water.
24356 13 Oct 2022 @ 1600 --- Tara Still pausing as seen from parking lot, probable stall after 1424 Fountain
24701 13 Oct 2022 @ 1515 --- Tara Start of 2nd pause after Fountain
24700 13 Oct 2022 @ 1504 --- Tara Start of 1st pause after Fountain
24350 12 Oct 2022 @ 1830 12 Oct 2022 @ 1900 Tara In short pause mode
24349 12 Oct 2022 @ 1615 12 Oct 2022 @ 1625 Tara In long pause mode as seen from parking lot
24322 08 Oct 2022 @ 1643 --- steve Clepsydra erupting normally, Spasm off, Jet active, water no visible in Fountain from the boardwalk.
24310 07 Oct 2022 @ 1751 --- steve Clepsydra was off as I drove by
24695 07 Oct 2022 @ 1322 --- Tara Start of 1st Clepsydra pause after 1246 Fountain eruption
24290 06 Oct 2022 @ 1856 --- steve Clepsydra is on but only 3 vents. Spasm is ie, Jett has not erupted recently. Water is barely visible in Fountain from the boardwalk. Water is visible in Morning from the stairs.
24273 05 Oct 2022 @ 1458 --- steve Clepsydra is IE from 2-3 vents but somewhat weak. Spasm is on strong. Jet is gurgling like it wants to start but has no water in the runoff channel. Water levels in Fountain and Morning are high.
24238 05 Oct 2022 @ 1127 --- steve Clepsydra turned off before 1127 but I missed it due to steam and not paying attention.
24237 05 Oct 2022 @ 1103 --- steve On arrival Clepsydra is weakly on with mostly one vent weakly active. Spasm is IE, Morning and Fountain have high water levels. Twig and Jet are off. Bearclaw is rumbling.
24227 04 Oct 2022 @ 1753 --- Tara seemed to be on strong as seen from the road
24691 04 Oct 2022 @ 1730 --- Tara 2nd pause after Fountain
24690 04 Oct 2022 @ 1721 --- Tara 1st pause after Fountain
24205 03 Oct 2022 @ 1737 --- DanS First pause
24208 03 Oct 2022 @ 1634 --- Jesselee Main front vent on
24207 03 Oct 2022 @ 1620 --- Jesselee Side vent reactivated
24204 03 Oct 2022 @ 1555 --- DanS Front vent off. Side vent empty.
24206 03 Oct 2022 @ 1520 --- Jesselee Stopped curious thumping sound it made at least from 1120 to now
24170 30 Sep 2022 @ 1424 --- Graham Paused 11m after Fountain quit.
24160 29 Sep 2022 @ 1013 --- ThomasR Start of pause
24152 28 Sep 2022 @ 1836 --- Graham 6th pause, in a stall.
24150 28 Sep 2022 @ 1722 --- Graham Paused 12m after Fountain quit.
24148 28 Sep 2022 @ 1152 --- Graham Paused 10m after Fountain.
24136 27 Sep 2022 @ 0959 --- SteveO Paused 10 minutes after Fountain.
24125 26 Sep 2022 @ 1126 --- Graham Paused 10m after Fountain.
24123 26 Sep 2022 @ 0652 --- Graham Paused 11m after Fountain.
24055 24 Sep 2022 @ 0709 --- Graham Paused 16m after Fountain quit.
24025 23 Sep 2022 @ 1920 --- Tara Still on strong, no pauses after 1824 Fountain
24020 23 Sep 2022 @ 1303 --- Graham Paused 11m after Fountain quit.
24017 23 Sep 2022 @ 0659 --- Graham Paused, in a stall, Fountain high.
23880 17 Sep 2022 @ 1524 --- Tara Still on strong, no pauses after 1424 Fountain eruption
23879 17 Sep 2022 @ 0703 17 Sep 2022 @ 0740 Graham Prior to this it was ie with front vent off, other vents weak. Completely off sometime between 0658 and 0703. 0740 started with just back vents splashing weakly.
23858 16 Sep 2022 @ 1135 --- Tara Started continuous eruption at about this time. Had been pausing for at least 2 hours prior
23826 14 Sep 2022 @ 1830 --- Tara Off as seen from parking lot
23823 14 Sep 2022 @ 1604 --- ThomasR Clepsydra off as seen from parking lot.
23800 13 Sep 2022 @ 1821 --- Tara Off as seen from the road
23780 12 Sep 2022 @ 1819 --- Graham Paused 13m after Fountain quit.
23779 12 Sep 2022 @ 1529 --- Graham On steady 4h34m after Fountain quit and 30 pauses.
23777 12 Sep 2022 @ 1107 --- Graham Paused 12m after Fountain quit.
23776 12 Sep 2022 @ 0738 --- Graham Start of continuous strong eruption with the front vent on. See 0625ie entry for details.
23740 11 Sep 2022 @ 1945 --- SantaFe108 Paused.
23760 11 Sep 2022 @ 1522 --- steve Clepsydra off.
23758 11 Sep 2022 @ 1516 --- steve Clepsydra shut off for about 1015 seconds then restarted. Now erupting from 5 vents.
23757 11 Sep 2022 @ 1506 --- steve Clepsydra is still erupting weakly from 3 vents since the 1436 start.
23754 11 Sep 2022 @ 1435 --- steve Off at 1435
23752 11 Sep 2022 @ 1430 --- steve Front (pool) vent of clepsydra occasionally bursting
23749 11 Sep 2022 @ 1349 --- steve Clepsydra off again
23748 11 Sep 2022 @ 1339 --- steve Off again
23747 11 Sep 2022 @ 1330 --- steve Off 1330
23746 11 Sep 2022 @ 1319 --- steve Off 1319
23745 11 Sep 2022 @ 1259 --- steve Off 1259
23744 11 Sep 2022 @ 1250 --- steve Clepsydra turned off
23742 11 Sep 2022 @ 1242 --- steve Clepsydra off 1242
23724 10 Sep 2022 @ 1941 --- Tara start of 5th pause after Fountain's 1815 eruption, probable stall.
24630 10 Sep 2022 @ 1927 --- Tara start of 4th pause
24629 10 Sep 2022 @ 1915 --- Tara start of 3rd pause
24628 10 Sep 2022 @ 1905 --- Tara start of 2nd pause
24627 10 Sep 2022 @ 1857 --- Tara 1st pause in progress
23683 09 Sep 2022 @ 1336 --- steve Clepsydra is doing some mixed water/steam action.
23682 09 Sep 2022 @ 1307 --- steve Clepsydra is off and water is easily visible in Morning. Spasm is ie and the water level in Fountain is about 18 inches below the rim. Looks like a stall.
23654 08 Sep 2022 @ 1233 --- Graham Start of continuous activity during stall.
23649 08 Sep 2022 @ 1021 --- steve From the road, clepsydra and all the geysers on the Fountain hill are off.
23652 08 Sep 2022 @ 1018 --- Graham Paused 13m after Fountain quit.
23610 06 Sep 2022 @ 1402 --- Graham Paused 12m after Fountain quit.
23608 06 Sep 2022 @ 0930 --- Graham Paused 12m after Fountain quit.
23599 05 Sep 2022 @ 2046 --- Tara start of 5th pause
24623 05 Sep 2022 @ 2033 --- Tara start of 4th pause
24622 05 Sep 2022 @ 2020 --- Tara start of 3rd pause
24621 05 Sep 2022 @ 2010 --- Tara start of 2nd pause
24620 05 Sep 2022 @ 2001 --- Tara start of 1st pause
23452 27 Aug 2022 @ 2050 --- Tara Remained continuous after Fountain, no pauses as of 2050.
23430 27 Aug 2022 @ 1506 --- SantaFe108 Paused.
23428 27 Aug 2022 @ 1445 --- SantaFe108 Paused from the road.
23436 27 Aug 2022 @ 1308 --- cb off. nothing erupting on or around the platform at this time as viewed from the road going south
23388 24 Aug 2022 @ 1545 --- S.Glasser in eruption
23298 19 Aug 2022 @ 2032 --- steve From the road it appears Clepsydra is off
23281 19 Aug 2022 @ 1811 --- steve Clepsydra turned off again after I left sometime before 1811
23280 19 Aug 2022 @ 1749 --- steve Off 1749
23279 19 Aug 2022 @ 1739 --- steve Off the second time
23278 19 Aug 2022 @ 1731 --- steve Off, one splash 1735, on 1737
23312 19 Aug 2022 @ 1134 --- SantaFe108 Clepsydra's side pool erupting from a low pool to a few feet high.
23265 19 Aug 2022 @ 0736 --- RMichaels Pauses at 0736, 0746, and 0754. Left after third pause. Potential delay interval for next Fountain.
23246 18 Aug 2022 @ 1033 --- steve Several vents are off or are just steam but it is still going.
23219 16 Aug 2022 @ 1234 --- steve Clep is off.
23215 16 Aug 2022 @ 0848 --- steve Pausing but restarting
23165 13 Aug 2022 @ 2120 --- mjacka Arrived at 0741. Clepsydra was off. Nothing else in the entire complex was active. Clepsydra started up 0747. From then until 1119, it went through a series of eruptions and pauses. Almost all pauses were 4 - 6 minutes, the only exceptions a 9 minute pause (the first I saw) and two 7 minute pauses before 0942. Early on, eruptions were 9 to 7 minutes. But by 0925, all were 4 or 5 minutes. At 1119, Clepsydra had a very vigorous start and didn't go off again until after Fountain at 1501. The newer feature between Clepsydra and Spasm (not sure how it is being referred to) came on for the first time and stayed on until Fountain erupted. The additional feature went off at 1420. Clepsydra paused after Fountain at 1454 and started up again at 1519. At that point, I'd had all the rain and hail I could take, so left.
23156 12 Aug 2022 @ 1705 --- minissa First pause after Fountain, on again 1718
23150 12 Aug 2022 @ 1206 --- Tara still in pause mode after ~0900 eruption
EntrySourceLinkComment
03 Jun 2017 @ 1100 JSJ https://www.flickr.com/photos/jsjgeology/35373533035 Photo of Clepsydra Geyser erupting during the late morning of 3 June 2017.
Baseline does not exist.