Last Known Eruption
3h 5m ago
Predicted Next Eruption
Today at 1904 ± 25 minutes

Latest Eruptions

Eruption DurationInterval
24 Jan 2025 @ 1304 wc6h 10m
24 Jan 2025 @ 0654 ie wc12h 34m
23 Jan 2025 @ 1820 wc5h 55m
23 Jan 2025 @ 1225 ie wc6h 3m
23 Jan 2025 @ 0622 ie wc12h 17m
22 Jan 2025 @ 1805 wc1d 8h 33m
21 Jan 2025 @ 0932 wc6h 33m
21 Jan 2025 @ 0259 ie wc13h 7m
20 Jan 2025 @ 1352 ie wc19h 55m
19 Jan 2025 @ 1757 wc6h 37m
19 Jan 2025 @ 1120 ns5h 26m
19 Jan 2025 @ 0554 wc6h 20m
18 Jan 2025 @ 2334 wc5h 56m
18 Jan 2025 @ 1738 wc6h 3m
18 Jan 2025 @ 1135 wc1d 1h 20m
17 Jan 2025 @ 1015 A6h 11m
17 Jan 2025 @ 0404 ie wc6h 20m
16 Jan 2025 @ 2144 ie wc6h 30m
16 Jan 2025 @ 1514 ie wc12h 37m
16 Jan 2025 @ 0237 wc13h 5m
15 Jan 2025 @ 1332 ie wc6h 34m
15 Jan 2025 @ 0658 ns wc6h 42m
15 Jan 2025 @ 0016 wc6h 21m
14 Jan 2025 @ 1755 ie wc6h 54m
14 Jan 2025 @ 1101 wc6h 35m
14 Jan 2025 @ 0426 wc6h 9m
13 Jan 2025 @ 2217 wc6h 9m
13 Jan 2025 @ 1608 ie wc5h 32m
13 Jan 2025 @ 10366h 37m
13 Jan 2025 @ 0359 ie12h 58m
12 Jan 2025 @ 1501 ie wc6h 25m
12 Jan 2025 @ 0836 ie wc6h 20m
12 Jan 2025 @ 0216 wc6h 35m
11 Jan 2025 @ 1941 wc6h 21m
11 Jan 2025 @ 1320 wc5h 25m
11 Jan 2025 @ 0755 ns wc6h 37m
11 Jan 2025 @ 0118 wc12h 46m
10 Jan 2025 @ 1232 wc6h 32m
10 Jan 2025 @ 0600 A wc6h 27m
09 Jan 2025 @ 2333 wc6h 32m
09 Jan 2025 @ 1701 wc5h 56m
09 Jan 2025 @ 1105 A6h 5m
09 Jan 2025 @ 0500 A12h 40m
08 Jan 2025 @ 1620 wc5h 56m
08 Jan 2025 @ 1024 ns wc6h 34m
08 Jan 2025 @ 0350 A6h 38m
07 Jan 2025 @ 2112 wc6h 33m
07 Jan 2025 @ 1439 ns6h 1m
07 Jan 2025 @ 083812h 45m
06 Jan 2025 @ 1953 wc6h 32m
06 Jan 2025 @ 1321 ie6h 2m
06 Jan 2025 @ 0719 ns wc12h 47m
05 Jan 2025 @ 1832 wc6h 2m
05 Jan 2025 @ 1230 wc19h 41m
04 Jan 2025 @ 1649 wc6h 20m
04 Jan 2025 @ 1029 ie6h 14m
04 Jan 2025 @ 0415 A12h 34m
03 Jan 2025 @ 1541 wc5h 40m
03 Jan 2025 @ 1001 ie wc18h 56m
02 Jan 2025 @ 1505 A6h 34m
02 Jan 2025 @ 0831 wc1d 5m
01 Jan 2025 @ 0826 ns wc18h 47m
31 Dec 2024 @ 1339 wc6h 45m
31 Dec 2024 @ 0654 wc6h 26m
31 Dec 2024 @ 0028 ie wc12h 36m
30 Dec 2024 @ 1152196h 12m
30 Dec 2024 @ 0540 A12h 50m
29 Dec 2024 @ 1650 A5h 58m
29 Dec 2024 @ 10526h 22m
29 Dec 2024 @ 0430 A12h 9m
28 Dec 2024 @ 1621 wc6h 6m
28 Dec 2024 @ 1015 ie wc17h 55m
27 Dec 2024 @ 1620 A6h 33m
27 Dec 2024 @ 0947 wc6h 17m
27 Dec 2024 @ 0330 A12h 0m
26 Dec 2024 @ 1530 A6h 25m
26 Dec 2024 @ 0905 A19h 17m
25 Dec 2024 @ 1348 wc6h 26m
25 Dec 2024 @ 0722 ie wc19h 15m
24 Dec 2024 @ 12076h 30m
24 Dec 2024 @ 0537 wc12h 37m
23 Dec 2024 @ 1700 ns wc5h 27m
23 Dec 2024 @ 1133 wc6h 24m
23 Dec 2024 @ 0509 wc12h 34m
22 Dec 2024 @ 1635 ie wc5h 57m
22 Dec 2024 @ 1038 wc6h 8m
22 Dec 2024 @ 0430 wc12h 35m
21 Dec 2024 @ 155519m 30s 1d 56m
20 Dec 2024 @ 14596h 20m
20 Dec 2024 @ 0839 ns wc18h 31m
19 Dec 2024 @ 1408 wc6h 2m
19 Dec 2024 @ 0806 ns5h 54m
19 Dec 2024 @ 0212 wc12h 39m
18 Dec 2024 @ 133319m 11s 5h 57m
18 Dec 2024 @ 0736 ns wc6h 33m
18 Dec 2024 @ 0103 wc13h 20m
17 Dec 2024 @ 1143 ns6h 37m
17 Dec 2024 @ 0506 wc18h 45m
16 Dec 2024 @ 1021 ns wc6h 26m
16 Dec 2024 @ 0355 wc5h 57m

Interval Statistics

Interval Count100
Min5h 25m
Max1d 8h 33m
Mean9h 30m
Median6h 32m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
38031 18 Dec 2024 @ 1252 --- K.Cooper already in overflow
37985 11 Dec 2024 @ 1034 --- mwolf In overflow
37694 23 Oct 2024 @ 1649 --- DaveM Riverside eruption was 1649wc. The 1622 event did not produce enough steam to be seen on the webcam. the 1649 steam cloud was quite large.
37461 09 Oct 2024 @ 1304 --- mrsteed overflow resumed
37455 09 Oct 2024 @ 1115 --- mrsteed In overflow. Overflow began around 11:10AM
37276 30 Sep 2024 @ 0856 --- ddshepard In overflow
37275 30 Sep 2024 @ 0815 --- ddshepard No overflow; Bison to left of geyser.
37229 28 Sep 2024 @ 1908 --- User34 Series of heavy splashing and jetting from left vent that lasted a little over a minute. Overflow ceased early on during this activity and then resumed at 1921 (p=13m)
37203 28 Sep 2024 @ 0948 --- Pholli still no overflow
37201 28 Sep 2024 @ 0829 --- ddshepard Not in overflow
37163 26 Sep 2024 @ 0845 --- Borg In moderate overflow
37161 26 Sep 2024 @ 0733 --- Borg Dry, no overflow
37152 25 Sep 2024 @ 1319 --- Negh Started boiling over
37134 24 Sep 2024 @ 1129 --- Borg Overflow began at 1129
36939 12 Sep 2024 @ 1630 12 Sep 2024 @ 1648 Borg In light overflow, began within last 15 min
36897 11 Sep 2024 @ 0839 --- Lizzysa In overflow
36814 06 Sep 2024 @ 1530 06 Sep 2024 @ 1600 Borg Overflow began at 345
36765 05 Sep 2024 @ 0905 --- CraigC started overflow within last 12 mins
36737 04 Sep 2024 @ 0817 --- CraigC started overflow
36724 03 Sep 2024 @ 1617 --- Borg Post-eruptive
36715 03 Sep 2024 @ 0923 --- CraigC in overflow already
36667 01 Sep 2024 @ 1234 --- SantaFe108 In overflow.
36655 31 Aug 2024 @ 0717 --- CraigC started overflow again after false start
36653 31 Aug 2024 @ 0700 --- CraigC false start, huge splashing from keyhole for 2 mins, then shut off
36651 31 Aug 2024 @ 0643 --- CraigC already in overflow
36623 30 Aug 2024 @ 1041 --- ge start of overflow
36609 29 Aug 2024 @ 0905 --- CraigC already in overflow
36607 29 Aug 2024 @ 0756 --- CraigC no overflow yet
36595 28 Aug 2024 @ 0631 --- CraigC already in overflow, very light
36564 27 Aug 2024 @ 0639 --- CraigC already in overflow
36551 26 Aug 2024 @ 0645 --- CraigC heavy steam plume, no overflow, probably post-eruptive
36524 24 Aug 2024 @ 0702 --- BrianR Already in overflow
36434 17 Aug 2024 @ 0947 --- RMichaels In overflow as I passed by.
36373 11 Aug 2024 @ 1327 --- mwolf in overflow
36363 11 Aug 2024 @ 0743 --- CraigC in overflow
36343 10 Aug 2024 @ 0646 --- CraigC in overflow
36342 10 Aug 2024 @ 0620 --- CraigC no overflow
36323 08 Aug 2024 @ 0944 --- CraigC in overflow
36322 08 Aug 2024 @ 0843 --- CraigC no overflow
36312 07 Aug 2024 @ 0752 --- CraigC in overflow
36311 07 Aug 2024 @ 0730 --- CraigC no overflow
36297 06 Aug 2024 @ 0617 --- CraigC started overflow within last 15 minutes
36289 05 Aug 2024 @ 1040 --- CraigC in overflow
36288 05 Aug 2024 @ 1024 --- CraigC no overflow yet
36242 03 Aug 2024 @ 0742 --- CraigC in overflow
36233 02 Aug 2024 @ 2015 --- bhoppe first boiling water visible in MV at 2008. crater is gradually filling with water again. overflow began again at 2015
36232 02 Aug 2024 @ 2002 --- bhoppe Riverside's "Old Main Vent" put out quite a bit of water nonstop for about 75 seconds and totally killed any overflow from the real Main Vent. Almost like it would during a real eruption of Riverside just without the actual eruption of Riverside. Will upload video within a couple days
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
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.