Last Known Eruption
14h 3m ago

Latest Eruptions

EruptionDurationCodeInterval
23 Apr 2017 @ 1323 wc-1-7h 12m
23 Apr 2017 @ 0611 wc-1-6h 4m
23 Apr 2017 @ 0007 wc---7h 27m
22 Apr 2017 @ 16409m 5s G1Q7h 56m
22 Apr 2017 @ 0844 ns wc---6h 15m
22 Apr 2017 @ 0229 E---6h 32m
21 Apr 2017 @ 1957 wc-2-6h 22m
21 Apr 2017 @ 13359m 51s T1C7h 20m
21 Apr 2017 @ 0615 ns wc---6h 32m
20 Apr 2017 @ 2343 wc---7h 40m
20 Apr 2017 @ 1603 ie wc---6h 20m
20 Apr 2017 @ 0943 wc-1-6h 22m
20 Apr 2017 @ 0321 wc---6h 5m
19 Apr 2017 @ 2116 wc-1-5h 55m
19 Apr 2017 @ 1521 wc-2-6h 46m
19 Apr 2017 @ 0835 wc-2-6h 16m
19 Apr 2017 @ 0219 wc---6h 22m
18 Apr 2017 @ 1957 wc-1-6h 12m
18 Apr 2017 @ 1345 wc-2-9h 29m
18 Apr 2017 @ 0416 wc-2-6h 42m
17 Apr 2017 @ 2134 wc---6h 7m
17 Apr 2017 @ 1527 wc-2-6h 51m
17 Apr 2017 @ 0836 wc~11.5m -2-7h 7m
17 Apr 2017 @ 0129 wc---6h 27m
16 Apr 2017 @ 1902 wc-1-7h 45m
16 Apr 2017 @ 1117 wc---6h 42m
16 Apr 2017 @ 0435 wc~11-12m-2-12h 21m
15 Apr 2017 @ 1614 wc-1-6h 19m
15 Apr 2017 @ 0955 wc---6h 13m
15 Apr 2017 @ 0342 wc---6h 31m
14 Apr 2017 @ 2111 wc---6h 58m
14 Apr 2017 @ 1413 wc-2-6h 16m
14 Apr 2017 @ 0757 wc---7h 9m
14 Apr 2017 @ 0048 wc-1-6h 50m
13 Apr 2017 @ 1758 wc-1-5h 43m
13 Apr 2017 @ 1215 wc-1-6h 51m
13 Apr 2017 @ 0524 wc-2-6h 50m
12 Apr 2017 @ 2234 wc-1-6h 52m
12 Apr 2017 @ 1542 wc-3-8h 39m
12 Apr 2017 @ 0703 wc~11m -2-6h 32m
12 Apr 2017 @ 0031 wc---12h 29m
11 Apr 2017 @ 1202 ie wc-1-6h 31m
11 Apr 2017 @ 0531 wc-1-6h 26m
10 Apr 2017 @ 2305 wc-2-6h 43m
10 Apr 2017 @ 1622 wc-2-6h 23m
10 Apr 2017 @ 0959 wc-2-6h 46m
10 Apr 2017 @ 0313 wc---6h 48m
09 Apr 2017 @ 2025 wc-1-6h 11m
09 Apr 2017 @ 1414 wc-1-7h 4m
09 Apr 2017 @ 0710 wc---6h 37m
09 Apr 2017 @ 0033 wc-2-6h 31m
08 Apr 2017 @ 1802 wc---6h 5m
08 Apr 2017 @ 1157 wc-1-6h 10m
08 Apr 2017 @ 0547 wc---18h 17m
07 Apr 2017 @ 1130 wc-1-6h 27m
07 Apr 2017 @ 0503 wc---6h 11m
06 Apr 2017 @ 2252 wc-1-6h 20m
06 Apr 2017 @ 1632 wc-2-7h 38m
06 Apr 2017 @ 0854 wc---7h 23m
06 Apr 2017 @ 0131 wc-2-6h 48m
05 Apr 2017 @ 1843 wc-2-6h 32m
05 Apr 2017 @ 1211 wc-1-6h 31m
05 Apr 2017 @ 0540 wc---6h 31m
04 Apr 2017 @ 2309 wc---6h 46m
04 Apr 2017 @ 1623 wc-2-6h 18m
04 Apr 2017 @ 1005 wc---6h 30m
04 Apr 2017 @ 0335 wc---12h 17m
03 Apr 2017 @ 1518 wc-1-6h 21m
03 Apr 2017 @ 0857 wc---7h 17m
03 Apr 2017 @ 0140 wc---19h 34m
02 Apr 2017 @ 0606 wc---6h 25m
01 Apr 2017 @ 2341 wc---6h 38m
01 Apr 2017 @ 1703 wc-1-6h 45m
01 Apr 2017 @ 1018 wc~10-11m-1-13h 56m
31 Mar 2017 @ 2022 wc---7h 11m
31 Mar 2017 @ 1311 wc~11m ---6h 26m
31 Mar 2017 @ 0645 wc---12h 28m
30 Mar 2017 @ 1817 wc~10-11m-1-6h 43m
30 Mar 2017 @ 1134 wc-1-12h 16m
29 Mar 2017 @ 2318 ? wc---6h 19m
29 Mar 2017 @ 1659 wc---6h 25m
29 Mar 2017 @ 1034 wc---7h 23m
29 Mar 2017 @ 0311 wc---6h 29m
28 Mar 2017 @ 2042 wc---7h 11m
28 Mar 2017 @ 1331 wc-1-6h 33m
28 Mar 2017 @ 0658 wc---12h 59m
27 Mar 2017 @ 1759 ie wc-1-6h 31m
27 Mar 2017 @ 1128 ns wc---7h 0m
27 Mar 2017 @ 0428 ? wc---6h 25m
26 Mar 2017 @ 2203 wc---6h 21m
26 Mar 2017 @ 1542 wc-2-6h 34m
26 Mar 2017 @ 0908 wc---6h 14m
26 Mar 2017 @ 0254 wc---5h 58m
25 Mar 2017 @ 2056 wc---6h 17m
25 Mar 2017 @ 1439 wc-1-7h 16m
25 Mar 2017 @ 0723 wc---6h 19m
25 Mar 2017 @ 0104 wc---6h 14m
24 Mar 2017 @ 1850 wc---6h 53m
24 Mar 2017 @ 1157 wc~13.75m -2-12h 3m
23 Mar 2017 @ 2354 wc---6h 39m

Interval Statistics

Interval Count100
Min5h 43m
Max19h 34m
Mean7h 24m
Median6h 33m
Grand-Specific
StartEqual 1G/1T
Max Bursts3
Mean Bursts1.45
Median Bursts1
EndEqual 1C/1Q

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
3965 09 Apr 2017 @ 0726 --- vw Possible Grand eruption, ie. Too foggy to be sure. A video review may clarify.
3957 27 Feb 2017 @ 0740 --- vw Large steam plume. Timing for Grand eruption consistent. Unable to to see water due to steam/fog. Video review may confirm eruption.
3955 20 Feb 2017 @ 0831 --- WillBoekel has not reached overflow yet
3954 19 Feb 2017 @ 1030 --- WillBoekel entered overflow in the last hour
3947 15 Feb 2017 @ 0758 --- vw Very large steam plume in Grand area. Unable to verify as Grand due to ground fog, but size and duration suggest Grand eruption.
3945 10 Feb 2017 @ 0622 --- novakg Possible Grand eruption. Very difficult to tell on webcam.
3935 29 Jan 2017 @ 0721 --- Graham Empty. Turban and Vent ie
3933 28 Jan 2017 @ 0737 --- Graham Empty gurgling and steaming
3932 27 Jan 2017 @ 0740 --- Graham Empty and quiet
3917 23 Jan 2017 @ 0720 --- Graham Post eruptive
3916 23 Jan 2017 @ 0656 --- vw Very large steam plum when I opened window. Too dark and steamy to see clearly. Video review would be helpful.
3901 24 Dec 2016 @ 1747 --- Betty Steam cloud in Grand area, so it possibly went. Hard to tell in the dim light and vanishing visibility.
3877 23 Nov 2016 @ 0820 --- vw Very large steam plume, but I was unable to see water during approx. 10m of heavy steam. Too uncertain to log as an eruption. Review of video may reveal better determination.
3862 06 Nov 2016 @ 0824 --- WillBoekel pool pretty full but not in overflow.
3861 06 Nov 2016 @ 0625 --- Graham Big steam cloud from Grand or Oblong. Not sure which.
3800 23 Oct 2016 @ 1301 --- Janet White Water in Grand but still a ways to overflow
3774 10 Oct 2016 @ 0939 --- ACarlson Sorry. No E time. Logger is not working.
3764 09 Oct 2016 @ 0756 --- SteveO Grand is empty
3732 01 Oct 2016 @ 0805 --- bhoppe Pool was in overflow, but was quite low during Turban eruption.
3717 26 Sep 2016 @ 0722 --- Kitt B Grand 0722 ie? hearing it from Beehive overlook
3714 25 Sep 2016 @ 0551 --- Betty Steam cloud in the right area, but it is too dark to be sure
3690 20 Sep 2016 @ 0755 --- JimS First water came into the pool.
3687 19 Sep 2016 @ 0640 --- JimS Pool in overflow.
3682 17 Sep 2016 @ 2242 --- ARoe Left Grand. Had not erupted yet.
3675 16 Sep 2016 @ 1505 --- Devin C. At 1500 the pool was full and waving. At 1502 Grand started splashing and doming about four times to 1-4 feet tall. It then died. Pool dropped and turban was at 1507.
3659 14 Sep 2016 @ 0727 --- JimS Pool in overflow at 727 when I returned from beehive.
3658 14 Sep 2016 @ 0659 --- JimS Almost in overflow at 0659.
3650 12 Sep 2016 @ 0701 --- JimS Already in overflow at 0701.
3644 11 Sep 2016 @ 0826 --- JimS Overflow started at 0826.
3643 11 Sep 2016 @ 0714 --- JimS Below overflow at 0714.
3613 07 Sep 2016 @ 0629 --- JimS Already in overflow when I arrived at 0629.
3607 06 Sep 2016 @ 0636 --- JimS Already in overflow when I arrived at 0636.
3602 05 Sep 2016 @ 0640 --- JimS Pool was already in overflow when I arrived at 0640.
3598 04 Sep 2016 @ 0628 --- JimS Pool empty. Turban and Vent quiet at 0628.
3594 02 Sep 2016 @ 0046 --- DGInc Might've erupted. Visible steam for about 10 to 11 minutes.
3584 01 Sep 2016 @ 0530 01 Sep 2016 @ 0630 JimS Pool empty and Vent and Turban quiet at 0530. First water at 0630.
3588 01 Sep 2016 @ 0435 --- DGInc Might've erupted
3585 31 Aug 2016 @ 2203 --- DGInc Might've erupted. 2204 is also possible.
3577 31 Aug 2016 @ 0528 --- JimS In overflow at 0528.
3574 30 Aug 2016 @ 0538 --- JimS Pool in overflow.
3569 29 Aug 2016 @ 0615 --- JimS Empty. Turban ie but no Vent.
3571 29 Aug 2016 @ 0411 --- DGInc Might've erupted. Duration was approximately 10 minutes
3527 22 Aug 2016 @ 1034 --- udo 11 minutes into Turban cycle Grand started full pool having waves.
3509 19 Aug 2016 @ 0626 --- JimS The pool at 0626 looks right for an eruption at about 0326.
3507 19 Aug 2016 @ 0326 --- Betty mentioned Grand ie at 0326
3451 09 Aug 2016 @ 0535 --- JimS Pool empty. Vent and Turban quiet.
3404 02 Aug 2016 @ 0452 --- DGInc Might've been in eruption.
3334 21 Jul 2016 @ 0610 --- JimS Overflow started 0610.
3311 18 Jul 2016 @ 0538 --- JimS Overflow from pool started at 0538.
3288 11 Jul 2016 @ 0551 --- JimS Pool in overflow at 0551. Possibly start of overflow.
3289 11 Jul 2016 @ 0043 --- DGInc MAY have erupted. Oblong is also a possibility. Due to the blurriness of the webcam it isn't visible as good as I would've liked, but it looked like 9 to 10 minutes. Maybe an E-time wouldn't be that bad to have though...
3287 11 Jul 2016 @ 0010 --- AndrewW Left at 0010. No eruption yet, left on good pool that did not produce eruption. Great overflow at early at 12 minute mark, dropped at 16 minute mark. Ridges when turban erupted. Previous two fills were poor.
3281 10 Jul 2016 @ 0542 --- JimS Pool in overflow.
3283 10 Jul 2016 @ 0012 --- DGInc May have erupted. Duration was about 10 minutes
3267 09 Jul 2016 @ 0520 --- JimS Pool already in overflow at 0520.
3269 09 Jul 2016 @ 0036 --- DGInc May have erupted. Duration was about 10 minutes, even though it is really hard to see (fancy 360p video quality)
3254 08 Jul 2016 @ 0538 --- JimS Overflow from the pool started 0538.
3256 08 Jul 2016 @ 0056 --- DGInc May have erupted. Last visible steam was about 10 to 11 minutes after noticing it.
3234 07 Jul 2016 @ 0514 --- JimS Pool empty. Vent and Turban quiet.
3222 06 Jul 2016 @ 0111 --- DGInc Might have erupted at that time. Due to the blurriness it is almost unseeable. Duration was about 10 to 11 minutes.
3209 05 Jul 2016 @ 0524 --- JimS Pool empty. Vent and Turban quiet.
3187 03 Jul 2016 @ 0500 --- Graham In overflow.
3163 01 Jul 2016 @ 0530 --- JimS Pool in overflow at 0530.
3135 26 Jun 2016 @ 0247 --- DaveM Appeared to be post eruptive at 0247 when web camera restarted
3133 25 Jun 2016 @ 0601 --- JimS Start of overflow.
3132 25 Jun 2016 @ 0521 --- JimS Pool below overflow.
3130 24 Jun 2016 @ 0214 24 Jun 2016 @ 0246 DGInc May have erupted during the nightly reset of the webcam. Some steam was visible in that area (maybe Turban and Vent continued until 0323?) and I haven't seen a Grand before or after the interuption.
3083 17 Jun 2016 @ 0511 --- JimS Pool in overflow at 0511.
3077 16 Jun 2016 @ 0533 --- JimS Pool in overflow, Turban ie at 0533.
3055 12 Jun 2016 @ 0512 --- JimS Pool in overflow, no eruption yet.
3045 11 Jun 2016 @ 0508 --- JimS Some water in pool but well below overflow.
3033 10 Jun 2016 @ 0506 --- JimS Pool empty, Turban ie.
3016 09 Jun 2016 @ 0545 --- JimS First ? water into the pool at 0545.
3015 09 Jun 2016 @ 0504 --- JimS Pool empty, Vent and Turban quiet.
3003 07 Jun 2016 @ 0117 --- DGInc May have erupted @ 0117
2989 06 Jun 2016 @ 0530 --- JimS First ? water came into the pool.
2987 06 Jun 2016 @ 0515 --- JimS Pool empty, Vent and Turban quiet.
2969 05 Jun 2016 @ 0519 --- JimS First ? water into three pool at 0519.
2968 05 Jun 2016 @ 0515 --- JimS Pool empty, Turban and Vent quiet.
2944 02 Jun 2016 @ 0518 --- JimS Pool in overflow on my arrival at 0518.
2930 01 Jun 2016 @ 0524 --- JimS First ? water entering pool at 0524.
2929 01 Jun 2016 @ 0509 --- JimS Pool empty. Turban alone ie.
2932 01 Jun 2016 @ 0359 --- DGInc May have erupted at 0359. Steam cloud was visible on the webcam captures. Duration was about 10 minutes. EDIT: it was apparently Oblong
2924 31 May 2016 @ 0521 --- JimS In overflow at 0521.
2919 30 May 2016 @ 0601 --- JimS Start of overflow from pool at 0601.
2915 29 May 2016 @ 0520 29 May 2016 @ 0604 JimS Vent and Turban ie at 0520. Both ended at 0604.
2912 29 May 2016 @ 0401 --- Suzanne No eruption as of 0401.
2895 26 May 2016 @ 0520 --- JimS Pool empty. Vent and Turban quiet.
2888 25 May 2016 @ 0523 --- JimS Pool empty. Vent and Turban quiet.
2868 21 May 2016 @ 2143 --- DaveM Grand erupted. But since "eyes in the basin are most often more reliable than eyes through the webcam" I hope someone in the basin saw the eruption.
2852 18 May 2016 @ 0712 --- JimS Start of overflow from pool at 0712.
2850 17 May 2016 @ 0535 --- JimS Post eruption with Turban and Vent ie.
2825 09 May 2016 @ 0718 --- JimS First overflow from pool at 0718.
2824 09 May 2016 @ 0554 --- JimS Small amount of water visible in pool , Turban ie.
2705 07 Mar 2016 @ 0539 --- DGInc Possibly post-eruptive @ 0539
2696 22 Feb 2016 @ 0555 --- DGInc Grand possibly ie. Steam cloud was bigger than normal and was still there at 0602.
2687 17 Feb 2016 @ 0540 --- DGInc Point of reference for DaveM when he watches the webcam captures: Grand possibly ie at 0540. Stripe of light in the background is interrupted by a steam cloud at Grand area.
2673 11 Feb 2016 @ 1405 --- WillBoekel first water in pool
2666 24 Jan 2016 @ 0255 --- DaveM Post eruptive when webcam came back on. Erupted sometime between 0150 and 0222.
2630 21 Dec 2015 @ 1235 --- Tara Vent and Turban i.e., Grand post-eruptive
EntrySourceLinkComment
08 Jun 2016 @ 1409 JSJ https://www.flickr.com/photos/jsjgeology/31182392056 Thermal image (1 of 8) of Grand Geyser's 2:09 to 2:20 PM eruption on 8 June 2016.
08 Jun 2016 @ 1409 JSJ https://www.flickr.com/photos/jsjgeology/31182537916 Photo (1 of 12) of Grand Geyser's 2:09 to 2:20 PM eruption on 8 June 2016.
11 Aug 2016 @ 1454 JSJ https://www.flickr.com/photos/jsjgeology/29895281572 Photo (1 of 12) of Grand Geyser's 2:54 to 3:06 PM eruption on 11 August 2016.
15 Aug 2015 @ 1057 JSJ https://www.youtube.com/watch?v=5oFebRTTHA4#t=13m58s Clips 27-31 of this video compilation (time stamp 13:58 to the end) show Grand Geyser's 10:57 to 11:09 AM eruption on 15 August 2015.
07 Aug 2015 @ 1945 JSJ https://www.youtube.com/watch?v=5oFebRTTHA4#t=12m00s Clips 20-26 of this video compilation (time stamp 12:00 to 13:58) show Grand Geyser's 7:45 to 7:56 PM eruption on 7 August 2015.
06 Jul 2015 @ 1435 JSJ https://www.youtube.com/watch?v=5oFebRTTHA4#t=11m27s Clips 17-19 of this video compilation (time stamp 11:27 to 12:00) show Grand Geyser's 2:35 to 2:46 PM eruption on 6 July 2015.
20 May 2015 @ 1927 JSJ https://www.youtube.com/watch?v=5oFebRTTHA4#t=5m26s Clips 13-16 of this video compilation (time stamp 5:25 to 11:27) show Grand Geyser's 7:27 to 7:40 PM eruption on 20 May 2015.
18 May 2015 @ 1639 JSJ https://www.youtube.com/watch?v=5oFebRTTHA4 Clips 1-8 of this video compilation (time stamp 0:00 to 4:17) show Grand Geyser's 4:39 to 4:49 PM eruption on 18 May 2015.
04 Sep 2002 @ 1213 JSJ https://www.youtube.com/watch?v=oW-EWQ60ZwI Video of Grand Geyser's 12:10 PM eruption on 4 September 2002 - 3 bursts + afterburst.
28 Aug 2013 @ 1731 JSJ https://www.youtube.com/watch?v=Myae9uC9qp8 Video by Micah Kipple of the 2nd burst of Grand Geyser's late afternoon eruption on 28 August 2013.
28 Aug 2013 @ 1731 JSJ https://www.youtube.com/watch?v=mtjkvtfaPN8 Video by Micah Kipple of the initiation of Grand Geyser's 5:30 PM eruption on 28 August 2013.
05 Jul 2013 @ 0849 JSJ https://www.youtube.com/watch?v=kYDQyexnLfI Video by Micah Kipple of the 5 July 2013 morning eruption of Grand Geyser.
28 Jun 2013 @ 0834 JSJ https://www.youtube.com/watch?v=MZjEKbivLug Video by Micah Kipple of the 28 June 2013 morning eruption of Grand Geyser.
06 Aug 2013 @ 1307 Micah Kipple https://www.flickr.com/photos/128128779@N05/15606907148 flickr
27 Jul 2014 @ 1538 Micah Kipple https://www.flickr.com/photos/joshy55013/15630773769 flickr
24 Sep 2014 @ 1256 Micah Kipple https://www.flickr.com/photos/126760153@N03/15828712802 flickr
20 Sep 2014 @ 1611 Micah Kipple https://www.flickr.com/photos/129696754@N08/15877864399 flickr
10 Jun 2014 @ 1327 Micah Kipple https://www.flickr.com/photos/107465174@N04/15887463047 flickr
28 Dec 2014 @ 1435 Micah Kipple https://www.flickr.com/photos/vambo25/16169556612 flickr
17 Jan 2015 @ 1139 Micah Kipple https://www.flickr.com/photos/bonnerphotographic/16142959918/in/photostream/ Flickr
BaselineDistance (ft)Description
South Side 200Jugwalk south of Grand at the Y junction at Belgian Pool


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