Last Known Eruption
15d 21h 37m ago

Latest Eruptions

Eruption DurationInterval
14 Nov 2020 @ 0708 ns wc18h 0m
13 Nov 2020 @ 1308 ie wc5h 48m
13 Nov 2020 @ 0720 ns wc18h 4m
12 Nov 2020 @ 1316 ie wc6h 15m
12 Nov 2020 @ 0701 ie wc18h 34m
11 Nov 2020 @ 1227 ie wc2d 19h 19m
08 Nov 2020 @ 1708 ie wc6h 2m
08 Nov 2020 @ 1106 ie wc17h 43m
07 Nov 2020 @ 1723 ie wc5h 52m
07 Nov 2020 @ 1131 ns11h 15m
07 Nov 2020 @ 0016 ie wc12h 2m
06 Nov 2020 @ 1214 ie wc5h 58m
06 Nov 2020 @ 0616 ns wc5h 53m
06 Nov 2020 @ 0023 ns wc12h 4m
05 Nov 2020 @ 1219 ie wc6h 15m
05 Nov 2020 @ 0604 ns wc6h 12m
04 Nov 2020 @ 2352 ns wc6h 12m
04 Nov 2020 @ 1740 ie wc12h 2m
04 Nov 2020 @ 0538 ie wc6h 19m
03 Nov 2020 @ 2319 wc12h 17m
03 Nov 2020 @ 1102 ie wc5h 51m
03 Nov 2020 @ 0511 ie wc6h 24m
02 Nov 2020 @ 2247 ns wc5h 52m
02 Nov 2020 @ 1655 ie wc11h 14m
02 Nov 2020 @ 0541 ns wc6h 12m
01 Nov 2020 @ 2329 ns wc6h 8m
01 Nov 2020 @ 1721 ie wc5h 54m
01 Nov 2020 @ 1127 ie wc5h 35m
01 Nov 2020 @ 0552 ie wc5h 14m
01 Nov 2020 @ 0138 ns wc6h 5m
31 Oct 2020 @ 1933 ie wc6h 12m
31 Oct 2020 @ 1321 ie wc6h 25m
31 Oct 2020 @ 0656 ns wc6h 12m
31 Oct 2020 @ 0044 ns wc11h 56m
30 Oct 2020 @ 1248 ie wc5h 58m
30 Oct 2020 @ 0650 ns wc6h 8m
30 Oct 2020 @ 0042 ie wc5h 38m
29 Oct 2020 @ 1904 ie wc6h 16m
29 Oct 2020 @ 1248 ie11h 19m
29 Oct 2020 @ 0129 ns wc6h 12m
28 Oct 2020 @ 1917 ns wc12h 6m
28 Oct 2020 @ 0711 ie wc5h 50m
28 Oct 2020 @ 0121 ns wc6h 2m
27 Oct 2020 @ 1919 ns wc4h 49m
27 Oct 2020 @ 1430 ie5h 51m
27 Oct 2020 @ 08396h 12m
27 Oct 2020 @ 0227 ns wc6h 12m
26 Oct 2020 @ 2015 ns wc5h 43m
26 Oct 2020 @ 1432 ns wc18h 32m
25 Oct 2020 @ 2000 wc5h 9m
25 Oct 2020 @ 1451 wc6h 11m
25 Oct 2020 @ 0840 ns wc18h 24m
24 Oct 2020 @ 1416 ie wc23h 2m
23 Oct 2020 @ 1514 ns1d 26m
22 Oct 2020 @ 1448 ie wc6h 21m
22 Oct 2020 @ 0827 ns wc18h 16m
21 Oct 2020 @ 14116h 7m
21 Oct 2020 @ 0804 ie17h 56m
20 Oct 2020 @ 1408 ie wc5h 44m
20 Oct 2020 @ 0824 ie wc18h 26m
19 Oct 2020 @ 13586h 18m
19 Oct 2020 @ 074012h 16m
18 Oct 2020 @ 1924 ns wc5h 56m
18 Oct 2020 @ 1328 ie wc6h 16m
18 Oct 2020 @ 0712 ie wc18h 41m
17 Oct 2020 @ 123118h 4m
16 Oct 2020 @ 18275h 32m
16 Oct 2020 @ 12555h 12m
16 Oct 2020 @ 0743 ns wc12h 19m
15 Oct 2020 @ 1924 ie12h 5m
15 Oct 2020 @ 0719 ie wc12h 27m
14 Oct 2020 @ 185212h 26m
14 Oct 2020 @ 0626 ns wc12h 11m
13 Oct 2020 @ 1815 ie6h 3m
13 Oct 2020 @ 121218h 36m
12 Oct 2020 @ 17366h 7m
12 Oct 2020 @ 112918h 27m
11 Oct 2020 @ 1702 wc6h 2m
11 Oct 2020 @ 1100 wc1d 23m
10 Oct 2020 @ 10376h 0m
10 Oct 2020 @ 0437 ns wc11h 25m
09 Oct 2020 @ 1712 ns wc6h 6m
09 Oct 2020 @ 1106 ie wc6h 17m
09 Oct 2020 @ 0449 ns wc12h 1m
08 Oct 2020 @ 1648 ns5h 5m
08 Oct 2020 @ 11436h 10m
08 Oct 2020 @ 0533 ns wc6h 8m
07 Oct 2020 @ 2325 ns wc6h 7m
07 Oct 2020 @ 1718 ie11h 29m
07 Oct 2020 @ 0549 ns wc6h 3m
06 Oct 2020 @ 2346 ns wc6h 9m
06 Oct 2020 @ 17376h 2m
06 Oct 2020 @ 11356h 6m
06 Oct 2020 @ 0529 ie wc6h 6m
05 Oct 2020 @ 2323 ns wc5h 59m
05 Oct 2020 @ 1724 ie wc5h 42m
05 Oct 2020 @ 1142 ns6h 0m
05 Oct 2020 @ 0542 ie wc6h 6m
04 Oct 2020 @ 2336 ns wc6h 13m
04 Oct 2020 @ 17235h 58m

Interval Statistics

Interval Count100
Min4h 49m
Max2d 19h 19m
Mean9h 48m
Median6h 12m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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.
14153 18 Mar 2020 @ 1907 --- JarnoO (wc) Some light steam appearing every so often from roughly its place (probably late ie). Interval until here (about 12h10m) would indicate a double interval assuming ~6h intervals.
14133 22 Feb 2020 @ 1032 --- Art In overflow
13969 24 Oct 2019 @ 1331 --- steve Riverside is in overflow
13859 03 Oct 2019 @ 1540 03 Oct 2019 @ 1728 underarockphoto BVS = back vent splash BVT = back bent thump I sat down at riverside at 15:40. It reached overflow at 15:45. The cone was totally dry so I’m assuming this was first overflow. I took notes of the following surges. The surges had increased boiling, and overflow, specifically enough to put water out over the lip of the cone behind and to the right of the main overflow channel. Surges noted as “+” indicate heavy overflow off the right ledge. “++” indicate overflow off all sides of the cone. 1545: overflow start 1610 1618 1624 1630 1635 1639 1644 1646 1647 1648 1648+ 1650 1652 1700 1703 1703 1704 1707 1707 1710++ BVT, BVS, heavy surging. Pool drained entirely for two minutes. 1712 1713 1716+ 1717+ 1718 1718 1719 1720 BVT 1721 1721+BVS 1725 1725+BVS 1728 1728++BVS 1728 Start
13858 03 Oct 2019 @ 1546 --- underarockphoto Overflow
13857 03 Oct 2019 @ 1542 --- underarockphoto Pool has filled crater and is blurping but has not hit overflow yet.
13674 13 Sep 2019 @ 0900 --- bhoppe Empty, quiet and no water visible. Possibly erupted round 730-8?
13587 06 Sep 2019 @ 0655 --- William empty crater.
13566 05 Sep 2019 @ 0840 --- AngelaT Overflow in process from Main Overflow Channel with splashing from Main Vent.
13323 20 Aug 2019 @ 1158 --- STS New NPS prediction of 17:45
13107 08 Aug 2019 @ 0825 --- AngelaT In overflow of with main vent splashing.
13024 04 Aug 2019 @ 1633 --- Stephen_Gemar Already in overflow, with decent play from the main vent.
12883 31 Jul 2019 @ 0955 --- rbwhitaker In overflow currently. (Did not see first overflow. Based on recent interval data, It's probably been in overflow for a while.)
12878 31 Jul 2019 @ 0815 --- adamdanski12 Mild to moderate overflow at this time with no splashing in any vents.
12862 29 Jul 2019 @ 0834 --- rbwhitaker Riverside went into overflow sometime between 816 and 834.
12834 28 Jul 2019 @ 0855 --- rbwhitaker Now in overflow. Don't know when it started
12830 28 Jul 2019 @ 0724 --- rbwhitaker Not in overflow yet
12819 27 Jul 2019 @ 0844 --- Minafuku In overflow when I arrived at 0844. Splashing in main vent is not sustained, hitting 6” to 18”. Keyhole splashing only to 6”. Posting a prediction of 0945 +/- 30.
12572 24 Jul 2019 @ 0800 --- dank Overflow and splashing in main vent
12487 14 Jul 2019 @ 2002 --- jazzknick Overflow well underway
12380 06 Jul 2019 @ 0848 --- Minafuku In overflow when I arrived at 0848
12087 03 Jul 2019 @ 0805 --- dank In overflow, light splashing in main vent
12055 01 Jul 2019 @ 0806 --- dank Steady overflow, splashing in main vent
11830 16 Jun 2019 @ 1342 --- Polly Post eruptive. Quietly steaming at 1342.
11740 12 Jun 2019 @ 0756 12 Jun 2019 @ 0806 dank Overflow and splashing in main vent, nothing in upper vent yet
11707 10 Jun 2019 @ 1614 --- Bhoffer Riverside is boiling and overflowing.
11704 10 Jun 2019 @ 1408 --- CrisG still no overflow
11701 10 Jun 2019 @ 1401 --- Bhoffer No action at riverside. Past prediction window.
11700 10 Jun 2019 @ 1300 --- Bhoffer Platform dry. Hardly any steam coming out of old vent.
11702 10 Jun 2019 @ 1250 --- CrisG no overflow. cone quietly steaming.
11598 06 Jun 2019 @ 0840 --- B**2 Definitely looks post eruption. Very Dry.
11574 04 Jun 2019 @ 1910 --- William in overflow
11179 06 May 2019 @ 0745 --- RLJones Start of overflow
11178 06 May 2019 @ 0657 --- RLJones Riverside is not in overflow
11149 03 May 2019 @ 1230 --- RLJones First overflow at 1230
11117 28 Apr 2019 @ 1933 --- ddshepard In overflow
11106 27 Apr 2019 @ 1251 --- rbwhitaker In overflow
10715 04 Nov 2018 @ 0805 --- jkgood In overflow
10661 24 Oct 2018 @ 1751 --- STS NPS prediction of 21:15
10560 05 Oct 2018 @ 0810 --- William No water visible in cone.
10342 22 Sep 2018 @ 0900 --- Minafuku Not in overflow as far as I can tell from the bike path...
10303 20 Sep 2018 @ 0807 --- STS NPS prediction of 0945
10057 06 Sep 2018 @ 1039 --- mswindle Not in overflow as of 1 hour ago, was in overflow as of 15 minutes ago. VC posting prediction of 1130.
9429 03 Aug 2018 @ 0958 --- rbwhitaker Currently in overflow
7874 23 Jan 2018 @ 0830 --- DaveM The two times posted (0315 and 0830) don't quite work. Both produced big steam clouds but the interval is too short.
7689 04 Oct 2017 @ 1125 --- Kitt B Riverside is in weak overflow
7536 29 Sep 2017 @ 0750 --- Kitt B heavy steam and low thruming sound -post eruptive
6630 17 Sep 2017 @ 0847 --- JimS First overflow at 0847.
5572 02 Sep 2017 @ 1006 --- JimS Overflow started at 1006.
5515 31 Aug 2017 @ 0630 --- JimS Already in overflow at 0630.
5509 30 Aug 2017 @ 1020 --- Art In overflow
5493 29 Aug 2017 @ 0809 --- JimS Already in overflow at 0809.
5468 28 Aug 2017 @ 0653 --- JimS Already in overflow at 0653.
5400 26 Aug 2017 @ 0804 --- JimS Was on overflow.
5321 25 Aug 2017 @ 0705 --- JimS In overflow at 0705.
5301 24 Aug 2017 @ 0929 --- JimS Overflow started at 0929.
5181 20 Aug 2017 @ 2232 --- Tara Post-eruptive, forced steam
5158 20 Aug 2017 @ 0636 20 Aug 2017 @ 0653 JimS Overflow started between 0636 and 0653.
4925 17 Aug 2017 @ 0627 --- JimS In overflow at 0627.
4881 12 Aug 2017 @ 0624 --- JimS Already in overflow at 0624.
4839 09 Aug 2017 @ 0626 --- JimS Already in overflow at 0626.
4803 05 Aug 2017 @ 0843 --- rbwhitaker Just went into first overflow.
4580 30 Jul 2017 @ 0608 --- JimS In overflow at 0608.
4544 26 Jul 2017 @ 0700 --- JimS In overflow.
4542 26 Jul 2017 @ 0621 --- EmilyW Dead at 0621
4515 23 Jul 2017 @ 0550 --- SteveO In overflow.
4494 19 Jul 2017 @ 0634 --- SteveO Started overflow after 0553 and before 0634.
4384 01 Jul 2017 @ 0825 --- WillBoekel start of overflow
4375 28 Jun 2017 @ 0550 28 Jun 2017 @ 0610 SteveO Started overflow between 0550 & 0610
4363 26 Jun 2017 @ 0711 --- Dave from B Overflow started in last 15 minutes
4201 04 Jun 2017 @ 0836 --- steve Overflow started between 0800 and 0820
4167 01 Jun 2017 @ 0808 --- B**2 Overflow started about 8:00
4118 23 May 2017 @ 0543 --- SteveO In overflow
4033 03 May 2017 @ 1053 --- udo Minor eruptions from upper vent caused main to stop overflowing. Overflow restarted 1056.
4027 02 May 2017 @ 0707 --- JimS In overflow at 0727.
3958 03 Mar 2017 @ 1253 --- WillBoekel Riverside currently in overflow
3902 24 Dec 2016 @ 1550 --- ARoe Quietly steaming. No water.
3842 04 Nov 2016 @ 1226 --- udo Now in overflow
3841 04 Nov 2016 @ 1214 --- udo Not overflowing yet.
3787 15 Oct 2016 @ 1015 --- Kitt B Riverside in over flow, may have just started
3361 25 Jul 2016 @ 0541 --- JimS Overflow started 0541.
3302 14 Jul 2016 @ 0650 --- JimS Overflow started about 0650. Eruption should be about 0830 to 0900.
3258 07 Jul 2016 @ 2140 --- JarnoO May have erupted. There was some steam visible at 2140 to 2143 in the Riverside spot, but due to the wind there was no visible steam after that.
2990 06 Jun 2016 @ 0729 --- B**2 Start of overflow.
2685 16 Feb 2016 @ 0930 --- AndreaEide Riverside in overflow ~0930
EntrySourceLinkComment
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.