Last Known Eruption
144d 19h 48m ago

Latest Eruptions

Eruption DurationInterval
26 Mar 2018 @ 0520 wc13h 5m
25 Mar 2018 @ 1615 wc6h 27m
25 Mar 2018 @ 0948 wc12h 18m
24 Mar 2018 @ 2130 wc6h 36m
24 Mar 2018 @ 1454 wc13h 0m
24 Mar 2018 @ 0154 wc6h 31m
23 Mar 2018 @ 1923 wc6h 28m
23 Mar 2018 @ 1255 wc1d 1h 47m
22 Mar 2018 @ 1108 wc19h 27m
21 Mar 2018 @ 1541 wc6h 27m
21 Mar 2018 @ 0914 wc6h 14m
21 Mar 2018 @ 0300 wc6h 35m
20 Mar 2018 @ 2025 wc6h 21m
20 Mar 2018 @ 1404 ie wc13h 9m
20 Mar 2018 @ 0055 wc6h 33m
19 Mar 2018 @ 1822 ie wc6h 33m
19 Mar 2018 @ 1149 wc6h 27m
19 Mar 2018 @ 0522 wc6h 39m
18 Mar 2018 @ 2243 wc6h 12m
18 Mar 2018 @ 1631 wc6h 33m
18 Mar 2018 @ 0958 wc6h 33m
18 Mar 2018 @ 0325 wc5h 48m
17 Mar 2018 @ 2137 wc6h 25m
17 Mar 2018 @ 1512 ie wc12h 54m
17 Mar 2018 @ 0218 wc6h 32m
16 Mar 2018 @ 1946 wc6h 16m
16 Mar 2018 @ 1330 ie wc6h 22m
16 Mar 2018 @ 0708 wc6h 28m
16 Mar 2018 @ 0040 ie wc6h 34m
15 Mar 2018 @ 1806 ie wc1d 2h 13m
14 Mar 2018 @ 1553 wc6h 26m
14 Mar 2018 @ 0927 ie wc19h 39m
13 Mar 2018 @ 1348 wc5h 57m
13 Mar 2018 @ 0751 wc6h 38m
13 Mar 2018 @ 0113 wc6h 42m
12 Mar 2018 @ 1831 wc1d 2h 7m
11 Mar 2018 @ 1624 ie wc6h 22m
11 Mar 2018 @ 1002 wc6h 32m
11 Mar 2018 @ 0330 wc6h 43m
10 Mar 2018 @ 1947 wc6h 36m
10 Mar 2018 @ 1311 wc6h 37m
10 Mar 2018 @ 0634 wc19h 31m
09 Mar 2018 @ 1103 wc6h 30m
09 Mar 2018 @ 0433 wc19h 17m
08 Mar 2018 @ 0916 wc6h 32m
08 Mar 2018 @ 0244 wc12h 48m
07 Mar 2018 @ 1356 ie wc13h 5m
07 Mar 2018 @ 0051 wc6h 37m
06 Mar 2018 @ 1814 wc6h 27m
06 Mar 2018 @ 1147 wc6h 44m
06 Mar 2018 @ 0503 wc13h 12m
05 Mar 2018 @ 1551 ie wc6h 37m
05 Mar 2018 @ 0914 wc6h 24m
05 Mar 2018 @ 0250 wc6h 35m
04 Mar 2018 @ 2015 wc1d 2h 5m
03 Mar 2018 @ 1810 ie wc6h 24m
03 Mar 2018 @ 1146 ie wc1d 21h 24m
01 Mar 2018 @ 142213h 1m
01 Mar 2018 @ 0121 wc6h 15m
28 Feb 2018 @ 1906 wc6h 29m
28 Feb 2018 @ 1237 wc6h 23m
28 Feb 2018 @ 0614 ? ie wc6h 29m
27 Feb 2018 @ 2345 wc6h 30m
27 Feb 2018 @ 1715 wc6h 30m
27 Feb 2018 @ 1045 ie wc6h 32m
27 Feb 2018 @ 0413 wc2d 15h 11m
24 Feb 2018 @ 1302 ie wc18h 47m
23 Feb 2018 @ 1815 ie wc6h 24m
23 Feb 2018 @ 1151 ie wc17h 51m
22 Feb 2018 @ 1800 ie wc6h 21m
22 Feb 2018 @ 1139 wc19h 10m
21 Feb 2018 @ 1629 wc6h 19m
21 Feb 2018 @ 1010 wc19h 17m
20 Feb 2018 @ 1453 wc6h 17m
20 Feb 2018 @ 0836 ie wc19h 24m
19 Feb 2018 @ 1312 ie wc6h 7m
19 Feb 2018 @ 0705 wc6h 28m
19 Feb 2018 @ 0037 wc11h 42m
18 Feb 2018 @ 12551d 1h 17m
17 Feb 2018 @ 113819h 5m
16 Feb 2018 @ 16335h 54m
16 Feb 2018 @ 103919h 9m
15 Feb 2018 @ 1530 ie6h 32m
15 Feb 2018 @ 0858 wc18h 58m
14 Feb 2018 @ 1400 A11h 34m
14 Feb 2018 @ 0226 wc12h 27m
13 Feb 2018 @ 1359 wc19h 38m
12 Feb 2018 @ 1821 wc6h 28m
12 Feb 2018 @ 1153 wc6h 25m
12 Feb 2018 @ 0528 wc5h 58m
11 Feb 2018 @ 2330 wc6h 10m
11 Feb 2018 @ 1720 ie wc6h 17m
11 Feb 2018 @ 1103 wc19h 8m
10 Feb 2018 @ 1555 wc6h 13m
10 Feb 2018 @ 0942 wc17h 48m
09 Feb 2018 @ 1554 ie wc6h 30m
09 Feb 2018 @ 0924 wc18h 11m
08 Feb 2018 @ 1513 wc6h 12m
08 Feb 2018 @ 0901 wc18h 55m
07 Feb 2018 @ 1406 wc6h 26m

Interval Statistics

Interval Count100
Min5h 48m
Max2d 15h 11m
Mean11h 14m
Median6h 33m

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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