Last Known Eruption
4h 42m ago
Predicted Next Eruption
Today at 1847 ± 25 minutes

Latest Eruptions

Eruption DurationInterval
26 Jul 2024 @ 1249 ie6h 29m
26 Jul 2024 @ 0620 ns12h 36m
25 Jul 2024 @ 1744 wc6h 34m
25 Jul 2024 @ 111018h 34m
24 Jul 2024 @ 1636 ie6h 36m
24 Jul 2024 @ 10006h 38m
24 Jul 2024 @ 0322 wc6h 34m
23 Jul 2024 @ 20486h 4m
23 Jul 2024 @ 1444 ie6h 7m
23 Jul 2024 @ 0837 wc6h 26m
23 Jul 2024 @ 0211 wc6h 33m
22 Jul 2024 @ 1938 ns6h 35m
22 Jul 2024 @ 130319m 30s 6h 33m
22 Jul 2024 @ 06306h 24m
22 Jul 2024 @ 0006 wc6h 4m
21 Jul 2024 @ 180219m 4s 6h 18m
21 Jul 2024 @ 114419:136h 37m
21 Jul 2024 @ 0507 wc6h 35m
20 Jul 2024 @ 2232 wc6h 28m
20 Jul 2024 @ 1604 wc6h 20m
20 Jul 2024 @ 09446h 39m
20 Jul 2024 @ 0305 wc6h 42m
19 Jul 2024 @ 2023 wc6h 33m
19 Jul 2024 @ 1350 ie6h 41m
19 Jul 2024 @ 0709 wc6h 17m
19 Jul 2024 @ 0052 wc6h 6m
18 Jul 2024 @ 1846 wc1h 11m
18 Jul 2024 @ 17354h 56m
18 Jul 2024 @ 12396h 3m
18 Jul 2024 @ 06366h 36m
18 Jul 2024 @ 0000 ie wc6h 33m
17 Jul 2024 @ 1727 wc6h 10m
17 Jul 2024 @ 111721m 5h 58m
17 Jul 2024 @ 0519 wc12h 47m
16 Jul 2024 @ 16326h 32m
16 Jul 2024 @ 100013h 6m
15 Jul 2024 @ 20546h 35m
15 Jul 2024 @ 1419 wc5h 58m
15 Jul 2024 @ 0821 ns18h 38m
14 Jul 2024 @ 13431d 40m
13 Jul 2024 @ 1303 ns6h 14m
13 Jul 2024 @ 0649 ie19h 22m
12 Jul 2024 @ 112719h 19m
11 Jul 2024 @ 16086h 10m
11 Jul 2024 @ 095819h 28m
10 Jul 2024 @ 1430 ie1d 1h 39m
09 Jul 2024 @ 1251 ns6h 28m
09 Jul 2024 @ 0623 wc17h 52m
08 Jul 2024 @ 12316h 30m
08 Jul 2024 @ 0601 ns wc13h 2m
07 Jul 2024 @ 1659 wc6h 26m
07 Jul 2024 @ 1033 ns wc6h 3m
07 Jul 2024 @ 0430 ns wc6h 34m
06 Jul 2024 @ 2156 wc6h 34m
06 Jul 2024 @ 152219m 6h 23m
06 Jul 2024 @ 0859 ie12h 38m
05 Jul 2024 @ 20216h 36m
05 Jul 2024 @ 13456h 31m
05 Jul 2024 @ 0714 wc13h 8m
04 Jul 2024 @ 180619m 6h 24m
04 Jul 2024 @ 1142 wc6h 9m
04 Jul 2024 @ 0533 wc6h 26m
03 Jul 2024 @ 2307 ie wc6h 40m
03 Jul 2024 @ 1627 ie wc6h 15m
03 Jul 2024 @ 1012 ns19h 41m
02 Jul 2024 @ 14316h 27m
02 Jul 2024 @ 0804 ns11h 58m
01 Jul 2024 @ 2006 ns wc6h 30m
01 Jul 2024 @ 13365h 56m
01 Jul 2024 @ 0740 ie wc11h 10m
30 Jun 2024 @ 2030 A6h 31m
30 Jun 2024 @ 13596h 35m
30 Jun 2024 @ 072412h 53m
29 Jun 2024 @ 1831 ns6h 25m
29 Jun 2024 @ 12066h 25m
29 Jun 2024 @ 0541 wc6h 32m
28 Jun 2024 @ 2309 ns6h 30m
28 Jun 2024 @ 16396h 32m
28 Jun 2024 @ 10076h 0m
28 Jun 2024 @ 0407 wc6h 31m
27 Jun 2024 @ 2136 wc12h 50m
27 Jun 2024 @ 084612h 39m
26 Jun 2024 @ 2007 ie wc6h 36m
26 Jun 2024 @ 13316h 7m
26 Jun 2024 @ 0724 wc12h 59m
25 Jun 2024 @ 1825 ns6h 33m
25 Jun 2024 @ 1152~19m 6h 23m
25 Jun 2024 @ 0529 wc12h 31m
24 Jun 2024 @ 16586h 33m
24 Jun 2024 @ 102512h 57m
23 Jun 2024 @ 2128 ie6h 28m
23 Jun 2024 @ 15006h 29m
23 Jun 2024 @ 083113h 4m
22 Jun 2024 @ 1927 ns6h 29m
22 Jun 2024 @ 125819h 32m
21 Jun 2024 @ 1725:4019m 6s 12h 56m
21 Jun 2024 @ 0429 wc6h 26m
20 Jun 2024 @ 2203 wc6h 23m
20 Jun 2024 @ 1540 A5h 56m
20 Jun 2024 @ 09446h 29m

Interval Statistics

Interval Count100
Min1h 11m
Max1d 1h 39m
Mean8h 44m
Median6h 32m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
36100 25 Jul 2024 @ 1054 --- EmilyW In overflow
36091 25 Jul 2024 @ 0643 --- PamM Not in overflow
36069 24 Jul 2024 @ 0931 --- Polly Already in overflow
36038 22 Jul 2024 @ 1923 --- sierrarx overflow stopped for ~30 seconds
36037 22 Jul 2024 @ 1909 22 Jul 2024 @ 1911 sierrarx splashes out of "back" of chair followed by a surge out of main vent. Overflow completely stopped for 2 minutes before restarting
35853 11 Jul 2024 @ 1433 --- Delta4Heavy85 Start of Overflow 1433, 1st Boils 1445
35697 03 Jul 2024 @ 0820 --- CraigC in light overflow
35672 02 Jul 2024 @ 0709 --- CraigC started overflow within 5 mins
35629 30 Jun 2024 @ 0637 --- CraigC in overflow
35616 29 Jun 2024 @ 1022 --- Dave from B Overflow started in the last 10 minutes
35585 27 Jun 2024 @ 0703 --- CraigC in overflow
35566 26 Jun 2024 @ 0608 --- CraigC in light overflow
35508 24 Jun 2024 @ 0834 --- CraigC in overflow
35443 22 Jun 2024 @ 1250 --- CraigC in overflow
35305 18 Jun 2024 @ 1240 --- aferrara Boiling, overflowing, weak and intermittent keyhole
35255 16 Jun 2024 @ 1547 --- Forestbewithyou In overflow and doing some small splashing at times but variable.
35161 13 Jun 2024 @ 0704 --- JimS Already in overflow at this time
35138 12 Jun 2024 @ 0721 --- Art Already in overflow
34988 08 Jun 2024 @ 1137 --- RMichaels Entered overflow at 1137.
34862 03 Jun 2024 @ 1223 --- Graham In overflow
34788 31 May 2024 @ 1609 --- Stephen_Gemar Post eruptive. Just steaming; no overflow or boiling.
34678 26 May 2024 @ 0637 --- CraigC in overflow
34650 24 May 2024 @ 0639 --- CraigC in good overflow
34565 15 May 2024 @ 1138 --- BrandonC In strong overflow
34499 10 May 2024 @ 1103 --- jkgood In overflow
34468 06 May 2024 @ 1724 --- Paul Wheeler Awesome
34309 22 Apr 2024 @ 1009 --- DanS In overflow
34196 15 Apr 2024 @ 1337 --- mhreed Overflow occurred within the last 15 minutes
34195 15 Apr 2024 @ 0855 --- mhreed In overflow, decent splashing in the pool
33891 20 Jan 2024 @ 0726 --- K.Cooper quiet
33788 14 Jan 2024 @ 1528 --- K.Cooper started overflow very recently
33786 14 Jan 2024 @ 1457 --- K.Cooper dry.
33025 18 Dec 2023 @ 1123 --- mhreed Empty. Erupted sometime before 1050.
33019 18 Dec 2023 @ 0918 --- mhvogel In overflow as I walked up.
32937 16 Dec 2023 @ 1015 --- aferrara Overflow, keyhole on
32847 15 Dec 2023 @ 0955 --- Pholli in overflow
29166 26 Oct 2023 @ 0942 --- nomadruss In overflow, not vigorous. I’d guess it will erupt around 10:30 so be watching for it.
29063 23 Oct 2023 @ 0951 23 Oct 2023 @ 0952 mhvogel Post eruptive. Heavy steam from both vents with no water.
28940 21 Oct 2023 @ 0750 --- User34 In overflow
28708 08 Oct 2023 @ 1523 --- Darcie In overflow
28526 28 Sep 2023 @ 0827 --- CraigC in overflow
28439 24 Sep 2023 @ 1025 --- CraigC started overflow within last 10 mins
28419 23 Sep 2023 @ 0830 --- CraigC started overflow within the last 10 mins
28361 20 Sep 2023 @ 1130 --- CraigC in overflow
28340 19 Sep 2023 @ 1015 --- MJL Overflow started 10:15.
28319 18 Sep 2023 @ 0850 --- Darcie Was not in overflow at 0845, but was at 0852
28221 11 Sep 2023 @ 1143 --- Darcie In overflow
28209 11 Sep 2023 @ 0915 --- Colin_W Quietly steaming. No overflow or splashing yet.
28193 10 Sep 2023 @ 1620 --- SantaFe108 In overflow.
28191 10 Sep 2023 @ 1546 --- Colin_W No overflow yet.
28115 08 Sep 2023 @ 1111 --- CP No steam phase.
28082 07 Sep 2023 @ 0938 --- CraigC overflow began
28050 06 Sep 2023 @ 0807 --- CraigC started overflow since check at 0800
27988 04 Sep 2023 @ 0655 --- SteveO In overflow.
27953 02 Sep 2023 @ 1630 --- SantaFe108 In overflow.
27865 30 Aug 2023 @ 1151 --- CraigC in overflow
27825 28 Aug 2023 @ 1059 --- CraigC in overflow already
27752 24 Aug 2023 @ 0936 --- RLJones Start of overflow
27718 22 Aug 2023 @ 0938 --- BrianR In overflow, was not in overflow half hour earlier per ranger
27708 21 Aug 2023 @ 0909 --- Colin_W Overflow with splashing in lower vent.
27487 10 Aug 2023 @ 0830 --- aferrara Dry, very weakly steaming
27379 02 Aug 2023 @ 0605 --- JimS Already in overflow
27349 30 Jul 2023 @ 2202 --- RMichaels Jetted water out of the top vent for a solid three minutes then quit without initiating the eruption. Afterward overflow completely stopped and Riverside fell silent. I've never seen Riverside behave this way before. Resumed overflow at 2225. Did not stay to see if this significantly delayed the eruption.
27130 20 Jul 2023 @ 0627 --- rbwhitaker in overflow
26704 28 Jun 2023 @ 0615 --- JimS Already in overflow
26691 27 Jun 2023 @ 0555 --- JimS Already in overflow
26392 17 Jun 2023 @ 0710 --- JimS Already in overflow
26332 15 Jun 2023 @ 0729 --- JimS Already in overflow
26255 12 Jun 2023 @ 0530 --- Darcie In overflow
26206 10 Jun 2023 @ 0631 --- JimS In overflow
26128 07 Jun 2023 @ 1547 --- SantaFe108 In overflow with good boiling.
26078 06 Jun 2023 @ 1000 --- Darcie Post-eruptive at 10:00, in overflow at 9:15
25999 04 Jun 2023 @ 0647 --- K.Cooper Large and 30s sustained 6ft surge from Upper vent. pool dropped.
25944 01 Jun 2023 @ 1220 --- ge 1st overflow
25942 01 Jun 2023 @ 0710 --- SteveO In overflow
25891 29 May 2023 @ 1420 29 May 2023 @ 1430 Tara Water burbling up in main vent. Occasional low whumping sounds from cone vent. Overflow resumed at 1429.
25890 29 May 2023 @ 1409 --- Tara Episode of huge splashes from upper/cone vent, height 5 to 15 feet above the cone and dumping water into the river. When this started the main/pool vent had strong overflow and was splashing to a foot, water level dropped pretty quickly and then all water disappeared. The epsidode lasted about 2 minutes, after which both vents were very quiet and showed no water.
25641 21 May 2023 @ 1002 --- Brando In overflow
25299 30 Apr 2023 @ 1645 --- SantaFe108 In overflow.
25215 23 Apr 2023 @ 0910 23 Apr 2023 @ 0925 aferrara Overflowing, but no keyhole vent yet
25073 05 Mar 2023 @ 1442 --- Colin_W No overflow
25070 04 Mar 2023 @ 1002 --- Colin_W In overflow with splashing
25040 27 Feb 2023 @ 1007 --- Colin_W Overflow and splashing
25025 20 Feb 2023 @ 1010 --- Colin_W In overflow with splashing.
24977 05 Feb 2023 @ 1054 --- Colin_W No splashing or overflow. Light steam from upper vent. Erupted earlier in the window.
24956 28 Jan 2023 @ 1546 --- Colin_W Steamy, no overflow. Post-eruption.
24437 18 Oct 2022 @ 1516 --- mwolf overflowing
24418 16 Oct 2022 @ 1240 --- User34 Trickling overflow, barely boiling from main vent
24365 14 Oct 2022 @ 1654 --- mwolf in overflow
23886 18 Sep 2022 @ 0729 --- RLJones riverside is in overflow. start time of overflow unknown
23876 17 Sep 2022 @ 1047 --- RLJones start of overflow
23851 16 Sep 2022 @ 0930 --- RLJones first overflow
23704 10 Sep 2022 @ 1150 --- BobInSLC in overflow
23409 26 Aug 2022 @ 0635 --- JimS Quiet.
23027 04 Aug 2022 @ 0940 --- dandersen In overflow
22847 26 Jul 2022 @ 0856 --- mhvogel In overflow
22691 19 Jul 2022 @ 1045 --- JimS Start of overflow at 1045.
22296 03 Jul 2022 @ 0746 --- JimS Already in overflow at this time.
22280 02 Jul 2022 @ 0708 --- EmilyW In overflow at this time
22253 01 Jul 2022 @ 0607 --- JimS Already in overflow at 0608
EntrySourceLinkComment
22 Jul 2020 @ 1328 JSJ https://www.youtube.com/watch?v=DD6WNhycERw 4 minute video of eruption.
17 Jul 2020 @ 0826 JSJ https://www.youtube.com/watch?v=4nQk8faybk8 Video of Riverside Geyser's morning eruption on 17 July 2020.
24 Oct 2019 @ 0825 JoeN https://youtu.be/9zd4Sn1BbIE r-side video
24 Oct 2019 @ 0825 JoeN https://i.imgur.com/yAycpXd.png picture
17 Sep 2019 @ 0807 JoeN https://i.imgur.com/qav7bhe.png one shot pic
06 Jun 2018 @ 1346 JSJ https://www.flickr.com/photos/jsjgeology/28208979037 Photo (out of 3) of Riverside Geyser's afternoon eruption on 6 June 2018.
08 Aug 2017 @ 1845 JSJ https://www.flickr.com/photos/jsjgeology/35725848423 Photo (out of 6) of Riverside Geyser's 6:45 PM-onward eruption on 8 August 2017.
02 Jul 2016 @ 1244 JSJ https://www.youtube.com/watch?v=QiSiw1FbPF0 Video compilation of Riverside Geyser's 12:44 PM-onward eruption on 2 July 2016.
03 Jul 2016 @ 1540 JSJ https://www.flickr.com/photos/jsjgeology/28303442506 Photo (1 of 6) of Riverside Geyser's 3:40 PM-onward eruption on 3 July 2016.
02 Jul 2016 @ 1244 JSJ https://www.flickr.com/photos/jsjgeology/27721214383 Photo (1 of 2) of Riverside Geyser's 12:44 PM-onward eruption on 2 July 2016.
08 Jul 2014 @ 1600 JSJ https://www.flickr.com/photos/jsjgeology/15129110278 Photo (1 of 3) of Riverside Geyser erupting at 4:00 PM-onward on 8 July 2014.
04 Aug 2013 @ 1653 JSJ https://www.flickr.com/photos/jsjgeology/13923848943 Photo (first of many) of Riverside Geyser's 4:54 to 5:16 PM eruption on 4 August 2013.
31 May 2013 @ 1528 JSJ https://www.flickr.com/photos/jsjgeology/13923982114 Photo (first of many, plus videos) of Riverside Geyser's 3:28 to 3:49 PM eruption on 31 May 2013.
28 Sep 2015 @ 0428 td http://i57.tinypic.com/1426f41.jpg Riverside?
27 Apr 2015 @ 0709 td http://tinypic.com/m/inx2eh/3 Taken 4/27/15 at 07:14 MT
01 Jul 2009 @ 1145 Micah Kipple https://www.flickr.com/photos/fback2008/16380373861 Flickr
Baseline does not exist.