Last Known Eruption
11h 28m ago

Latest Eruptions

Eruption DurationInterval
23 Mar 2023 @ 1853 wc6h 23m
23 Mar 2023 @ 1230 ie wc1d 1h 3m
22 Mar 2023 @ 1127 ns wc1d 32m
21 Mar 2023 @ 1055 ie wc18h 19m
20 Mar 2023 @ 1636 ie wc6h 16m
20 Mar 2023 @ 1020 wc12h 44m
19 Mar 2023 @ 2136 wc5h 50m
19 Mar 2023 @ 1546 wc12h 18m
19 Mar 2023 @ 0328 wc17h 7m
18 Mar 2023 @ 1021 wc6h 22m
18 Mar 2023 @ 0359 wc6h 27m
17 Mar 2023 @ 2132 wc18h 18m
17 Mar 2023 @ 0314 wc12h 38m
16 Mar 2023 @ 1436 ns wc6h 5m
16 Mar 2023 @ 0831 ns wc6h 21m
16 Mar 2023 @ 0210 wc6h 33m
15 Mar 2023 @ 1937 wc6h 22m
15 Mar 2023 @ 1315 ie wc17h 36m
14 Mar 2023 @ 1939 ie wc5h 50m
14 Mar 2023 @ 1349 wc1d 5h 26m
13 Mar 2023 @ 0823 ie wc17h 48m
12 Mar 2023 @ 1435 wc5h 44m
12 Mar 2023 @ 0851 ie wc6h 38m
12 Mar 2023 @ 0113 wc6h 27m
11 Mar 2023 @ 1846 ns wc6h 22m
11 Mar 2023 @ 1224 wc6h 29m
11 Mar 2023 @ 0555 wc1d 1h 7m
10 Mar 2023 @ 0448 wc12h 38m
09 Mar 2023 @ 1610 ns wc5h 52m
09 Mar 2023 @ 1018 ie wc12h 17m
08 Mar 2023 @ 2201 wc6h 30m
08 Mar 2023 @ 1531 ns wc6h 10m
08 Mar 2023 @ 0921 ie wc6h 35m
08 Mar 2023 @ 0246 wc6h 25m
07 Mar 2023 @ 2021 wc6h 4m
07 Mar 2023 @ 1417 wc12h 55m
07 Mar 2023 @ 0122 wc6h 23m
06 Mar 2023 @ 1859 wc1d 13m
05 Mar 2023 @ 1846 wc19h 33m
04 Mar 2023 @ 2313 wc12h 44m
04 Mar 2023 @ 1029 wc12h 45m
03 Mar 2023 @ 2144 wc6h 28m
03 Mar 2023 @ 151612h 41m
03 Mar 2023 @ 0235 wc6h 13m
02 Mar 2023 @ 2022 wc6h 15m
02 Mar 2023 @ 1407 ie wc6h 26m
02 Mar 2023 @ 0741 ie wc6h 1m
02 Mar 2023 @ 0140 wc6h 26m
01 Mar 2023 @ 1914 wc6h 28m
01 Mar 2023 @ 1246 wc6h 6m
01 Mar 2023 @ 0640 ? ie wc6h 17m
01 Mar 2023 @ 0023 wc6h 27m
28 Feb 2023 @ 1756 wc6h 28m
28 Feb 2023 @ 1128 ie wc12h 17m
27 Feb 2023 @ 2311 wc6h 16m
27 Feb 2023 @ 1655 ns wc6h 16m
27 Feb 2023 @ 1039 ie1d 1h 12m
26 Feb 2023 @ 0927 ie11h 12m
25 Feb 2023 @ 2215 wc12h 27m
25 Feb 2023 @ 0948 ie18h 49m
24 Feb 2023 @ 14596h 25m
24 Feb 2023 @ 0834 ie wc18h 28m
23 Feb 2023 @ 1406 ie wc6h 37m
23 Feb 2023 @ 0729 ie wc19h 8m
22 Feb 2023 @ 1221 wc5h 12m
22 Feb 2023 @ 0709 ie wc1d 13h 35m
20 Feb 2023 @ 1734 ie wc1d 7h 22m
19 Feb 2023 @ 1012 ie wc18h 57m
18 Feb 2023 @ 15156h 20m
18 Feb 2023 @ 0855 ie wc18h 54m
17 Feb 2023 @ 1401 ie1d 43m
16 Feb 2023 @ 1318 ns wc12h 25m
16 Feb 2023 @ 0053 wc5h 57m
15 Feb 2023 @ 1856 wc1d 1h 50m
14 Feb 2023 @ 1706 ns wc1d 1h 29m
13 Feb 2023 @ 1537 ns wc5h 57m
13 Feb 2023 @ 0940 ns6h 1m
13 Feb 2023 @ 0339 wc11h 16m
12 Feb 2023 @ 16236h 22m
12 Feb 2023 @ 1001 ie wc5h 51m
12 Feb 2023 @ 0410 wc5h 20m
11 Feb 2023 @ 2250 wc12h 40m
11 Feb 2023 @ 10106h 21m
11 Feb 2023 @ 0349 wc12h 28m
10 Feb 2023 @ 15216h 43m
10 Feb 2023 @ 0838 ie wc12h 24m
09 Feb 2023 @ 2014 wc12h 20m
09 Feb 2023 @ 0754 ie wc6h 28m
09 Feb 2023 @ 0126 wc5h 23m
08 Feb 2023 @ 2003 wc6h 15m
08 Feb 2023 @ 1348 ie wc6h 12m
08 Feb 2023 @ 0736 wc6h 13m
08 Feb 2023 @ 0123 wc6h 18m
07 Feb 2023 @ 1905 wc5h 53m
07 Feb 2023 @ 1312 wc6h 24m
07 Feb 2023 @ 0648 wc6h 24m
07 Feb 2023 @ 0024 wc6h 20m
06 Feb 2023 @ 1804 ie wc6h 29m
06 Feb 2023 @ 1135 wc6h 29m
06 Feb 2023 @ 0506 wc6h 25m

Interval Statistics

Interval Count100
Min5h 12m
Max1d 13h 35m
Mean10h 59m
Median6h 28m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
22189 29 Jun 2022 @ 0526 --- JimS Post eruptive at this time.
21873 09 Jun 2022 @ 1518 --- Forestbewithyou In overflow
21857 09 Jun 2022 @ 0825 --- RLJones In overflow at 0825, was not in overflow at 0740
21737 05 Jun 2022 @ 0820 --- Graham Gentle steam, post eruptive. 07xx report was Riverside, not F&M. Riverside had a very short interval, which it can do.
21679 03 Jun 2022 @ 0609 --- JimS Already in overflow.
21655 02 Jun 2022 @ 1018 --- JimS Start of overflow.
21630 01 Jun 2022 @ 0850 --- JimS Start of overflow.
21593 31 May 2022 @ 0700 --- JimS Overflow started at 0700.
21573 29 May 2022 @ 1411 --- aferrara Keyhole flipped off, off for about a minute
21472 25 May 2022 @ 0942 --- Colin_W Splashing in main vent and draining off to the side.
21337 17 May 2022 @ 1006 --- aferrara After >20 minutes of activity, keyhole turned off
21283 15 May 2022 @ 1326 --- aferrara First overflow
21282 15 May 2022 @ 1323 --- aferrara No overflow, no keyhole. Water just visible and boiling
21208 07 May 2022 @ 0939 --- Colin_W No pool or slashing. Steam gently wafting from both vents.
21162 04 May 2022 @ 0932 --- Colin_W Splashing in main vent and overflow.
21131 30 Apr 2022 @ 0936 --- Colin_W Splashing and overflow around the main cone.
20881 11 Mar 2022 @ 0925 --- aferrara Empty, lightly steam from both vents
20782 04 Feb 2022 @ 0924 --- aferrara keyhole on
20766 30 Jan 2022 @ 0941 --- aferrara Keyhole start
20704 16 Jan 2022 @ 0915 16 Jan 2022 @ 0940 aferrara Keyhole on, nothing from upper vent in this time.
20319 06 Nov 2021 @ 0859 --- aferrara In overflow
20235 31 Oct 2021 @ 0916 --- cb in overflow
20217 30 Oct 2021 @ 0952 --- Brando In overflow with boiling. Ranger prediction 10:30-10:45
20158 28 Oct 2021 @ 1355 --- DanS In overflow
20032 18 Oct 2021 @ 1013 --- cb in overflow
19632 17 Sep 2021 @ 0946 --- CrisG no overflow yet. no water visible in crater.
19600 16 Sep 2021 @ 1037 --- aferrara First splash in upper vent
19598 16 Sep 2021 @ 0955 16 Sep 2021 @ 1000 aferrara Keyhole started in this time range
19553 14 Sep 2021 @ 0717 --- CrisG not in overflow yet
19431 10 Sep 2021 @ 1425 --- RLJones Riverside is not in overflow. The sign is updated and is calling for an eruption at 1700 +\- 30
19235 01 Sep 2021 @ 1159 --- Barbara Lasseter Start of overflow
18955 18 Aug 2021 @ 0939 --- aferrara Bubbler behind main vent on.
18954 18 Aug 2021 @ 0925 --- aferrara In overflow, no bubbler
18873 09 Aug 2021 @ 0619 --- JimS Already in overflow.
18859 07 Aug 2021 @ 1211 --- aferrara In overflow, bubbler on.
18857 07 Aug 2021 @ 0815 --- Suzanne well past eruptive
18856 07 Aug 2021 @ 0605 --- JimS Already in overflow.
18845 06 Aug 2021 @ 0618 --- JimS Already in overflow.
18490 18 Jul 2021 @ 0535 --- SteveO In overflow
18338 10 Jul 2021 @ 0810 --- User34 Early overflow
18310 08 Jul 2021 @ 0836 --- JimS Start of overflow at 0836. Eruptions have been between 80 and 120 minutes from start of overflow. I recommend a prediction of 1010.
18236 02 Jul 2021 @ 0653 --- JimS Already in overflow at this time.
18215 01 Jul 2021 @ 0651 --- JimS Start of overflow. Eruptions have been about 80 to about 120 min after start of overflow. Suggest prediction of 0830.
18197 30 Jun 2021 @ 0723 --- JimS Overflow started 0723. Predict eruption at 0920.
18124 28 Jun 2021 @ 0640 --- JimS Overflow started about 0640. Predict eruption at about 0830.
18110 27 Jun 2021 @ 0605 --- JimS Start of overflow at 0605.
18098 26 Jun 2021 @ 0546 --- JimS Already in overflow at this time.
18080 25 Jun 2021 @ 0556 --- JimS In overflow.
18057 23 Jun 2021 @ 1134 --- JimS Overflow started at 1134.
18006 22 Jun 2021 @ 1108 --- K.Cooper Already in overflow
17935 20 Jun 2021 @ 0538 --- JimS Already in overflow.
17899 19 Jun 2021 @ 0553 --- JimS Already in overflow.
17888 18 Jun 2021 @ 1724 --- Art Already in overflow
17877 18 Jun 2021 @ 0548 --- JimS Already in overflow.
17850 16 Jun 2021 @ 1212 --- PamW In overflow when I walked up.
17335 01 Jun 2021 @ 1230 --- ge In overflow on arrival
17271 30 May 2021 @ 1529 --- Stephen_Gemar Another failed push. It stopped overflow for a few seconds.
17270 30 May 2021 @ 1525 --- Stephen_Gemar A failed push that stopped overflow for a few seconds.
17177 25 May 2021 @ 1643 --- User34 Another push and crash, no overflow for 90 seconds
17176 25 May 2021 @ 1625 --- User34 Huge push, afterwards overflow stopped for 1 1/2 to 2 minutes
16984 05 May 2021 @ 0927 --- mhvogel In overflow
16981 04 May 2021 @ 0858 --- nomadruss Riverside in overflow and broiling
16807 13 Jan 2021 @ 0942 --- mhvogel In overflow
16805 12 Jan 2021 @ 0956 --- mhvogel Riverside in overflow at 0956
16802 06 Jan 2021 @ 1003 --- mhvogel Currently in overflow.
16455 26 Oct 2020 @ 1426 --- nomadruss Beautiful eruption today.
16443 19 Oct 2020 @ 1156 --- am Not in overflow at this time
16425 14 Oct 2020 @ 1702 --- jonp In overflow
16415 12 Oct 2020 @ 0945 --- William in overflow, no water in back bubbler yet.
16328 04 Oct 2020 @ 1530 --- User34 Just below overflow
16244 24 Sep 2020 @ 1001 --- PamW In overflow
16239 23 Sep 2020 @ 1215 --- PamW An observer indicated Riverside had just finished.
15972 05 Sep 2020 @ 1132 --- jkgood In overflow & back vents on
15960 04 Sep 2020 @ 1855 --- William post eruptive, crater dry
15953 04 Sep 2020 @ 1209 --- TheHikingDude in overflow
15762 28 Aug 2020 @ 0930 28 Aug 2020 @ 0950 B**2 Start of overflow
15107 26 Jul 2020 @ 0805 --- William post eruptive, dry
14885 05 Jul 2020 @ 1224 --- William first observed splash from keyhole vent
14594 11 Jun 2020 @ 1036 --- William post eruptive, dry.
14162 03 Apr 2020 @ 1954 --- JarnoO (wc) Some steam appears to be originating from the Riverside area already, ~1h40m after the previous eruption.
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.