Last Known Eruption
5h 50m ago
Predicted Next Eruption
Today at 1900 ± 24 minutes

Latest Eruptions

Eruption DurationInterval
25 May 2018 @ 12306h 4m
25 May 2018 @ 0626 wc6h 10m
25 May 2018 @ 0016 wc5h 59m
24 May 2018 @ 1817 wc6h 20m
24 May 2018 @ 11576h 13m
24 May 2018 @ 0544 wc5h 58m
23 May 2018 @ 2346 wc6h 24m
23 May 2018 @ 1722 wc5h 53m
23 May 2018 @ 1129 wc12h 10m
22 May 2018 @ 2319 wc6h 18m
22 May 2018 @ 1701 ie wc6h 16m
22 May 2018 @ 10456h 20m
22 May 2018 @ 0425 wc6h 19m
21 May 2018 @ 2206 wc6h 18m
21 May 2018 @ 15485h 51m
21 May 2018 @ 0957 wc18h 27m
20 May 2018 @ 15306h 19m
20 May 2018 @ 091118h 44m
19 May 2018 @ 14275h 58m
19 May 2018 @ 0829 ie10h 8m
18 May 2018 @ 2221 ie wc6h 21m
18 May 2018 @ 1600 ns wc6h 20m
18 May 2018 @ 09402112h 39m
17 May 2018 @ 2101 wc5h 59m
17 May 2018 @ 150220m 6h 20m
17 May 2018 @ 08425h 40m
17 May 2018 @ 03026h 36m
16 May 2018 @ 2026 wc6h 28m
16 May 2018 @ 1358 ie6h 15m
16 May 2018 @ 074312h 26m
15 May 2018 @ 1917 wc5h 55m
15 May 2018 @ 13225h 58m
15 May 2018 @ 0724 wc6h 22m
15 May 2018 @ 0102 wc6h 38m
14 May 2018 @ 1824 wc6h 23m
14 May 2018 @ 12016h 14m
14 May 2018 @ 0547 ie6h 22m
13 May 2018 @ 2325 wc6h 19m
13 May 2018 @ 17065h 57m
13 May 2018 @ 1109 ns6h 18m
13 May 2018 @ 0451 wc18h 41m
12 May 2018 @ 1010 ie12h 15m
11 May 2018 @ 2155 wc6h 1m
11 May 2018 @ 15546h 26m
11 May 2018 @ 09286h 21m
11 May 2018 @ 0307 wc5h 51m
10 May 2018 @ 2116 wc6h 17m
10 May 2018 @ 14596h 14m
10 May 2018 @ 0845 ie6h 9m
10 May 2018 @ 0236 wc12h 25m
09 May 2018 @ 1411 ie5h 56m
09 May 2018 @ 0815 wc12h 4m
08 May 2018 @ 2011 wc6h 14m
08 May 2018 @ 13576h 19m
08 May 2018 @ 07385h 52m
08 May 2018 @ 0146 wc6h 0m
07 May 2018 @ 19466h 24m
07 May 2018 @ 1322 ie6h 17m
07 May 2018 @ 07056h 15m
07 May 2018 @ 0050 wc6h 26m
06 May 2018 @ 18246h 20m
06 May 2018 @ 1204 ns6h 28m
06 May 2018 @ 053612h 46m
05 May 2018 @ 16506h 25m
05 May 2018 @ 10256h 29m
05 May 2018 @ 0356 wc6h 30m
04 May 2018 @ 2126 wc12h 43m
04 May 2018 @ 0843 wc6h 33m
04 May 2018 @ 0210 wc13h 5m
03 May 2018 @ 13056h 25m
03 May 2018 @ 0640 wc6h 25m
03 May 2018 @ 0015 wc6h 27m
02 May 2018 @ 17486h 18m
02 May 2018 @ 11306h 18m
02 May 2018 @ 0512 ie wc6h 32m
01 May 2018 @ 2240 wc6h 15m
01 May 2018 @ 16256h 25m
01 May 2018 @ 100021m 6h 27m
01 May 2018 @ 0333 wc18h 57m
30 Apr 2018 @ 0836 ie wc6h 42m
30 Apr 2018 @ 0154 wc6h 19m
29 Apr 2018 @ 1935 ie wc6h 20m
29 Apr 2018 @ 1315 wc6h 23m
29 Apr 2018 @ 0652 wc6h 31m
29 Apr 2018 @ 0021 wc19h 17m
28 Apr 2018 @ 0504 wc6h 24m
27 Apr 2018 @ 2240 wc12h 49m
27 Apr 2018 @ 0951 wc6h 22m
27 Apr 2018 @ 0329 wc5h 58m
26 Apr 2018 @ 2131 wc6h 27m
26 Apr 2018 @ 15046h 19m
26 Apr 2018 @ 08456h 26m
26 Apr 2018 @ 0219 wc6h 36m
25 Apr 2018 @ 1943 wc6h 28m
25 Apr 2018 @ 1315 wc6h 28m
25 Apr 2018 @ 0647 wc6h 20m
25 Apr 2018 @ 0027 ie wc6h 31m
24 Apr 2018 @ 17566h 23m
24 Apr 2018 @ 1133 wc6h 32m
24 Apr 2018 @ 0501 wc6h 23m

Interval Statistics

Interval Count100
Min5h 40m
Max19h 17m
Mean7h 34m
Median6h 22m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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.
6329 13 Sep 2017 @ 0706 --- JimS Already in overflow at 0706.
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
4307 13 Jun 2017 @ 0810 --- B**2 Looks post eruptive.
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.
3318 19 Jul 2016 @ 0426 --- DGInc May have erupted
3302 14 Jul 2016 @ 0650 --- JimS Overflow started about 0650. Eruption should be about 0830 to 0900.
3257 08 Jul 2016 @ 0344 --- DGInc Might be ie. Riverside spot went dark, probably because of the steam
3258 07 Jul 2016 @ 2140 --- DGInc 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.
2876 21 May 2016 @ 2127 --- DaveM looks like Riverside erupted. Where are the observers in the basin when you need them?
2847 15 May 2016 @ 0532 --- JimS Riverside was definitely ie at 0532 when I got in sight of it from sawmill area. I saw no other big steam down basin.
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.
2449 01 Oct 2015 @ 0658 --- JimS Post-eruptive ar 0658.
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
605 21 Feb 2012 @ 0933 --- BoekelUpload 933ie overflow
116 21 Feb 2012 @ 0930 --- ofcarolyn overflow i.e. at 0930
112 20 Feb 2012 @ 0945 --- ofcarolyn had not erupted by 0945, we\'re predicting 1600
96 02 Feb 2012 @ 1630 --- Pat Snyder Thanks for the Riverside confirmation this morning. Sigh. No F&M.
94 01 Feb 2012 @ 1100 --- ofcarolyn We\'re not sure about recent overflow times, but are predicting based on an overflow time of 1 1/2 to 2 hours before a Riverside eruption.
93 01 Feb 2012 @ 0909 --- ofcarolyn overflow 0909 n.s.
92 31 Jan 2012 @ 0936 --- ofcarolyn early overflow i.e. at 0936
90 30 Jan 2012 @ 0850 --- ofcarolyn Early overflow at 0850 i.e.
87 24 Jan 2012 @ 0945 --- ofcarolyn overflow i.e. 0945, probably no eruption until past 1000
599 02 Jan 2012 @ 0913 02 Jan 2012 @ 0936 BoekelUpload overflow ie at 0913 and 0936
668 21 Mar 2011 @ 1156 --- BoekelUpload 1156ie in overflow
667 17 Mar 2011 @ 1140 --- BoekelUpload 1140ie in overflow
656 28 Feb 2011 @ 1430 --- BoekelUpload 1430 ie in overflow
654 25 Feb 2011 @ 0940 --- BoekelUpload 0940ie in overflow
637 28 Jan 2011 @ 0940 --- BoekelUpload 0940ie in overflow
633 14 Jan 2011 @ 0836 --- BoekelUpload 0836 ie in overflow
631 12 Jan 2011 @ 0950 --- BoekelUpload 0950 ie in overflow
971 21 Jun 2008 @ 1405 21 Jun 2008 @ 1455 BoekelUpload 14:x5
947 06 Mar 2008 @ 1130 06 Mar 2008 @ 1139 BoekelUpload 11:3x ie wc
946 05 Mar 2008 @ 0940 --- BoekelUpload overflow 9:40 ie
923 21 Jan 2008 @ 1553 --- BoekelUpload overflow 15:53ie
1400 29 Dec 2007 @ 1230 29 Dec 2007 @ 1239 BoekelUpload 12:3x
1399 21 Oct 2007 @ 2053 21 Oct 2007 @ 2353 BoekelUpload 2x:53; vr
1518 10 Oct 2007 @ 1413 --- GeyserTimesNew overflow
1398 29 Apr 2007 @ 0730 29 Apr 2007 @ 0739 BoekelUpload 7:3x ns
1397 18 Feb 2007 @ 0045 18 Feb 2007 @ 2345 BoekelUpload xx:45
7054 16 Oct 1992 @ 0817 --- DGInc overflow
6370 22 Sep 1992 @ 1214 22 Sep 1992 @ 1215 DGInc [Either 1214 or 1215, write-over unclear]
4926 23 Jan 1992 @ 1615 --- DGInc over 1615 vr
4906 07 Jan 1992 @ 1717 --- DGInc after 1717
472 02 Aug 1975 @ 0836 --- BoekelUpload 0836 1st overflow
EntrySourceLinkComment
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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