Last Known Eruption
1h 1m ago
Predicted Next Eruption
Sep 21 at 0141 ± 25 minutes

Latest Eruptions

Eruption DurationInterval
20 Sep 2019 @ 19416h 15m
20 Sep 2019 @ 132620m 6h 5m
20 Sep 2019 @ 07215h 51m
20 Sep 2019 @ 0130 ns wc5h 42m
19 Sep 2019 @ 1948 ns wc5h 51m
19 Sep 2019 @ 1357 ini22m 5h 55m
19 Sep 2019 @ 0802 ns6h 1m
19 Sep 2019 @ 0201 ns wc5h 48m
18 Sep 2019 @ 2013 ie wc6h 5m
18 Sep 2019 @ 1408 ns5h 58m
18 Sep 2019 @ 0810 ie wc18h 3m
17 Sep 2019 @ 1407 ie6h 2m
17 Sep 2019 @ 0805 ie6h 19m
17 Sep 2019 @ 0146 ns wc5h 58m
16 Sep 2019 @ 19485h 56m
16 Sep 2019 @ 13526h 0m
16 Sep 2019 @ 07526h 6m
16 Sep 2019 @ 0146 ns wc17h 51m
15 Sep 2019 @ 0755 A12h 13m
14 Sep 2019 @ 19425h 57m
14 Sep 2019 @ 13456h 3m
14 Sep 2019 @ 0742 ie wc12h 7m
13 Sep 2019 @ 1935 ns wc6h 1m
13 Sep 2019 @ 13346h 2m
13 Sep 2019 @ 0732 maj12h 11m
12 Sep 2019 @ 192112h 14m
12 Sep 2019 @ 0707 ns wc6h 11m
12 Sep 2019 @ 0056 ie wc6h 10m
11 Sep 2019 @ 1846 ns wc6h 17m
11 Sep 2019 @ 122911h 55m
11 Sep 2019 @ 0034 ie wc6h 6m
10 Sep 2019 @ 1828 ns wc17h 54m
10 Sep 2019 @ 0034 ie wc6h 9m
09 Sep 2019 @ 1825 ns wc6h 0m
09 Sep 2019 @ 12256h 7m
09 Sep 2019 @ 0618 ie wc11h 42m
08 Sep 2019 @ 1836 ie wc5h 20m
08 Sep 2019 @ 1316 ie wc16h 51m
07 Sep 2019 @ 2025 ie wc5h 6m
07 Sep 2019 @ 15195h 42m
07 Sep 2019 @ 093712h 8m
06 Sep 2019 @ 2129 ie wc6h 0m
06 Sep 2019 @ 1529 ns wc5h 42m
06 Sep 2019 @ 094718h 14m
05 Sep 2019 @ 15335h 58m
05 Sep 2019 @ 093518h 22m
04 Sep 2019 @ 15135h 53m
04 Sep 2019 @ 0920 ie21h 2m
03 Sep 2019 @ 1218 ie6h 6m
03 Sep 2019 @ 0612 ns wc18h 12m
02 Sep 2019 @ 120017h 6m
01 Sep 2019 @ 18546h 7m
01 Sep 2019 @ 124723h 59m
31 Aug 2019 @ 12486h 3m
31 Aug 2019 @ 0645 ie wc11h 36m
30 Aug 2019 @ 19096h 1m
30 Aug 2019 @ 13085h 54m
30 Aug 2019 @ 071412h 9m
29 Aug 2019 @ 19056h 4m
29 Aug 2019 @ 13015h 58m
29 Aug 2019 @ 070312h 3m
28 Aug 2019 @ 1900 ie6h 0m
28 Aug 2019 @ 13005h 56m
28 Aug 2019 @ 070412h 10m
27 Aug 2019 @ 18545h 59m
27 Aug 2019 @ 12555h 50m
27 Aug 2019 @ 070512h 11m
26 Aug 2019 @ 18546h 4m
26 Aug 2019 @ 12505h 42m
26 Aug 2019 @ 0708 ie11h 20m
25 Aug 2019 @ 19485h 59m
25 Aug 2019 @ 13496h 3m
25 Aug 2019 @ 0746 ns11h 59m
24 Aug 2019 @ 1947 ie wc4h 49m
24 Aug 2019 @ 1458 ns6h 6m
24 Aug 2019 @ 08526h 7m
24 Aug 2019 @ 0245 ie wc6h 2m
23 Aug 2019 @ 2043 ns6h 0m
23 Aug 2019 @ 14436h 4m
23 Aug 2019 @ 08395h 53m
23 Aug 2019 @ 0246 ie wc6h 8m
22 Aug 2019 @ 2038 ie wc11h 0m
22 Aug 2019 @ 0938 ie wc5h 52m
22 Aug 2019 @ 0346 ns wc17h 6m
21 Aug 2019 @ 1040 ie4h 39m
21 Aug 2019 @ 0601 ie wc6h 19m
20 Aug 2019 @ 2342 ie wc6h 7m
20 Aug 2019 @ 1735 ie11h 25m
20 Aug 2019 @ 0610 ie wc6h 14m
19 Aug 2019 @ 2356 ie wc17h 7m
19 Aug 2019 @ 0649 ie wc5h 57m
19 Aug 2019 @ 0052 ns wc10h 37m
18 Aug 2019 @ 14156h 5m
18 Aug 2019 @ 08105h 49m
18 Aug 2019 @ 0221 ie wc6h 0m
17 Aug 2019 @ 2021 ns wc5h 58m
17 Aug 2019 @ 14235h 56m
17 Aug 2019 @ 08275h 55m
17 Aug 2019 @ 0232 ns wc6h 3m
16 Aug 2019 @ 20295h 55m

Interval Statistics

Interval Count100
Min4h 39m
Max23h 59m
Mean8h 27m
Median6h 4m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
2672 09 Feb 2016 @ 1526 --- ACarlson Riverside started overflow around 15:25.
2668 02 Feb 2016 @ 0940 --- ACarlson In overflow at 0940
2480 05 Oct 2015 @ 0839 --- cb very quiet. no overflow
2461 03 Oct 2015 @ 0818 --- JimS In overflow at 0818.
2442 30 Sep 2015 @ 0610 --- Jake in. overflow
2077 10 Aug 2015 @ 1139 --- RLJones Dry when I arrived at 1135. Overflow started at 1139
2076 10 Aug 2015 @ 0851 --- EmilyW Quiet and empty at 0851
2015 04 Aug 2015 @ 0656 --- RyanMaurer crater empty. no overflow.
1825 02 Jul 2015 @ 0953 --- DaveM Riverside start was 0730wc but GT is using the in basin 0731ie time as the primary.
1726 12 Jun 2015 @ 0820 --- B**2 Start of overflow!
1140 21 Aug 2014 @ 1129 --- WillBoekel first overflow 1129
1115 25 Jul 2014 @ 0850 --- WillBoekel First overflow 0850
1091 01 Jul 2014 @ 1406 --- WillBoekel First overflow 1406
1060 06 May 2014 @ 1240 --- WillBoekel First overflow 1240
868 05 Sep 2013 @ 1300 --- Graham Jim prediction 1300
622 26 Oct 2012 @ 0940 --- smballou In overflow with boiling at 0940
144 14 Mar 2012 @ 1500 --- ofcarolyn rough 1500 prediction
141 13 Mar 2012 @ 1045 --- ofcarolyn 1045 prediction
126 05 Mar 2012 @ 1330 --- ofcarolyn prediction 1330
125 28 Feb 2012 @ 1415 --- ofcarolyn 1415 prediction
117 22 Feb 2012 @ 0926 --- ofcarolyn overflow 0926 i.e., predicting 1045
EntrySourceLinkComment
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.


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