Last Known Eruption
6h 59m ago

Latest Eruptions

Eruption DurationInterval
13 Oct 2019 @ 1007 ie wc6h 10m
13 Oct 2019 @ 0357 ns wc5h 36m
12 Oct 2019 @ 2221 ie wc6h 19m
12 Oct 2019 @ 1602 ns wc5h 46m
12 Oct 2019 @ 1016 ie wc5h 45m
12 Oct 2019 @ 0431 ns wc5h 54m
11 Oct 2019 @ 2237 ns wc5h 57m
11 Oct 2019 @ 1640 ns wc5h 37m
11 Oct 2019 @ 1103 ie wc11h 47m
10 Oct 2019 @ 2316 ns wc5h 59m
10 Oct 2019 @ 1717 ie wc2d 6h 10m
08 Oct 2019 @ 1107 ns wc12h 4m
07 Oct 2019 @ 2303 ns wc6h 1m
07 Oct 2019 @ 1702 ie wc18h 3m
06 Oct 2019 @ 2259 ns wc5h 58m
06 Oct 2019 @ 1701 ie6h 0m
06 Oct 2019 @ 11012012h 7m
05 Oct 2019 @ 2254 ns wc6h 9m
05 Oct 2019 @ 1645 ns wc6h 2m
05 Oct 2019 @ 1043 wc17h 51m
04 Oct 2019 @ 16525h 56m
04 Oct 2019 @ 1056 ns wc17h 28m
03 Oct 2019 @ 17285h 58m
03 Oct 2019 @ 1130 A17h 35m
02 Oct 2019 @ 1755 ie6h 5m
02 Oct 2019 @ 115021m 5h 21m
02 Oct 2019 @ 0629 ie wc18h 0m
01 Oct 2019 @ 1229 ns wc5h 46m
01 Oct 2019 @ 0643 ns wc12h 8m
30 Sep 2019 @ 1835 ie wc6h 0m
30 Sep 2019 @ 1235 ie6h 8m
30 Sep 2019 @ 0627 ns wc11h 57m
29 Sep 2019 @ 18305h 44m
29 Sep 2019 @ 12465h 42m
29 Sep 2019 @ 0704 ie wc12h 19m
28 Sep 2019 @ 18456h 2m
28 Sep 2019 @ 12435h 51m
28 Sep 2019 @ 065211h 54m
27 Sep 2019 @ 1858 ns wc5h 16m
27 Sep 2019 @ 1342 ie6h 46m
27 Sep 2019 @ 065611h 38m
26 Sep 2019 @ 1918 ns wc5h 56m
26 Sep 2019 @ 1322 ns5h 55m
26 Sep 2019 @ 0727 ns wc12h 9m
25 Sep 2019 @ 19186h 4m
25 Sep 2019 @ 13146h 0m
25 Sep 2019 @ 0714 ie wc12h 16m
24 Sep 2019 @ 1858 ie wc5h 54m
24 Sep 2019 @ 1304 ie wc6h 2m
24 Sep 2019 @ 0702 ns wc12h 5m
23 Sep 2019 @ 1857 ns wc5h 56m
23 Sep 2019 @ 130118h 12m
22 Sep 2019 @ 1849 ie6h 7m
22 Sep 2019 @ 1242 ns wc6h 11m
22 Sep 2019 @ 0631 ns wc10h 45m
21 Sep 2019 @ 19465h 52m
21 Sep 2019 @ 1354 ns wc6h 3m
21 Sep 2019 @ 0751 ns wc6h 4m
21 Sep 2019 @ 0147 ns wc6h 6m
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

Interval Statistics

Interval Count100
Min5h 6m
Max2d 6h 10m
Mean8h 45m
Median6h 4m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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
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
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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