Last Known Eruption
100d 17h 46m ago

Latest Eruptions

Eruption DurationInterval
15 Aug 2020 @ 12443m
15 Aug 2020 @ 12414m
15 Aug 2020 @ 12375m
15 Aug 2020 @ 12325m
15 Aug 2020 @ 12274m
15 Aug 2020 @ 12233m
15 Aug 2020 @ 122012m
15 Aug 2020 @ 12083m
15 Aug 2020 @ 12054m
15 Aug 2020 @ 12015m
15 Aug 2020 @ 11562m
15 Aug 2020 @ 1154 A75d 16h 41m
31 May 2020 @ 1913 ns12d 6h 53m
19 May 2020 @ 1220 wc2m
19 May 2020 @ 1218 wc2m
19 May 2020 @ 1216 wc3m
19 May 2020 @ 1213 wc2m
19 May 2020 @ 1211 wc2m
19 May 2020 @ 1209 wc12m
19 May 2020 @ 1157 wc3m
19 May 2020 @ 1154 wc1d 3h 46m
18 May 2020 @ 0808 wc12d 19h 19m
05 May 2020 @ 1249 wc4m
05 May 2020 @ 1245 wc2m
05 May 2020 @ 1243 wc237d 20h 45m
10 Sep 2019 @ 15587m
10 Sep 2019 @ 155121d 6h 1m
20 Aug 2019 @ 09508m
20 Aug 2019 @ 094237d 22m
14 Jul 2019 @ 0920 wc4m
14 Jul 2019 @ 0916 wc10m
14 Jul 2019 @ 0906 wc78d 16h 38m
26 Apr 2019 @ 1628 ie wc262d 1h 2m
07 Aug 2018 @ 15261h 7m
07 Aug 2018 @ 1419242d 22h 20m
07 Dec 2017 @ 1459 ie wc102d 21h 35m
26 Aug 2017 @ 1824 ie5m
26 Aug 2017 @ 1819 ie5d 38m
21 Aug 2017 @ 174161d 2h 15m
21 Jun 2017 @ 1526 wc17d 3h 51m
04 Jun 2017 @ 1135 wc311d 16h 32m
27 Jul 2016 @ 1903 ns wc6d 23h 28m
20 Jul 2016 @ 1935 ie wc1h 0m
20 Jul 2016 @ 1835 ns wc10h 57m
20 Jul 2016 @ 0738 wc27d 21h 48m
22 Jun 2016 @ 095028d 23h 58m
24 May 2016 @ 0952 ie wc5d 16h 22m
18 May 2016 @ 1730 ie wc1d 5h 21m
17 May 2016 @ 1209 ie wc1h 4m
17 May 2016 @ 1105 ie wc338d 16h 25m
13 Jun 2015 @ 1840 wc1d 21h 15m
11 Jun 2015 @ 212522m
11 Jun 2015 @ 21032m
11 Jun 2015 @ 21015d 11h 52m
06 Jun 2015 @ 09091d 15h 51m
04 Jun 2015 @ 1718 ns wc39d 23h 16m
25 Apr 2015 @ 1802 ie43d 39m
13 Mar 2015 @ 1723 ie wc66d 5h 48m
06 Jan 2015 @ 1035 wc maj25d 21h 53m
11 Dec 2014 @ 1242 wc maj78d 20h 1m
23 Sep 2014 @ 1741 ie wc5d 1h 58m
18 Sep 2014 @ 1543 ie wc13d 3h 43m
05 Sep 2014 @ 12004d 19h 24m
31 Aug 2014 @ 16362m
31 Aug 2014 @ 16344m
31 Aug 2014 @ 16303m
31 Aug 2014 @ 16272m
31 Aug 2014 @ 16253m
31 Aug 2014 @ 162212m
31 Aug 2014 @ 161016d 3h 53m
15 Aug 2014 @ 1217 ie wc23d 3h 38m
23 Jul 2014 @ 0839 ie wc19d 13h 59m
03 Jul 2014 @ 1840 maj35d 9h 32m
29 May 2014 @ 0908 wc1d 20h 36m
27 May 2014 @ 12329m
27 May 2014 @ 122323h 7m
26 May 2014 @ 13166m
26 May 2014 @ 13102m
26 May 2014 @ 13085d 4h 50m
21 May 2014 @ 081895d 21h 44m
14 Feb 2014 @ 0934 wc111d 17h 10m
25 Oct 2013 @ 1724 ie wc25d 5h 40m
30 Sep 2013 @ 114413d 22h 57m
16 Sep 2013 @ 1247 wc10d 14h 22m
05 Sep 2013 @ 2225 maj5h 49m
05 Sep 2013 @ 16366d 21h 44m
29 Aug 2013 @ 1852 ? ie wc6h 24m
29 Aug 2013 @ 122820d 21h 15m
08 Aug 2013 @ 1513 ie6d 54m
02 Aug 2013 @ 1419 ? ie wc5d 21h 58m
27 Jul 2013 @ 1621 ie wc2d 17h 51m
24 Jul 2013 @ 223026d 23h 4m
27 Jun 2013 @ 23262m
27 Jun 2013 @ 232411m
27 Jun 2013 @ 23132m
27 Jun 2013 @ 23116d 23h 21m
20 Jun 2013 @ 2350262d 4h 54m
01 Oct 2012 @ 1856 ie wc19d 29m
12 Sep 2012 @ 1827 ie wc6d 1h 35m
06 Sep 2012 @ 1652 ie wc22h 40m

Interval Statistics

Interval Count100
Min2m
Max338d 16h 25m
Mean29d 11m
Median1d 18h 13m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
14213 19 May 2020 @ 1207 19 May 2020 @ 1223 underarockphoto Webcam was on Pump entire time and I watched consistently. This time span can be considered a sample of current activity.
14212 19 May 2020 @ 1157 19 May 2020 @ 1207 underarockphoto No large eruptive episodes were seen during this time - the camera then panned away.
10683 29 Oct 2018 @ 1153 29 Oct 2018 @ 1254 udo Pump and Sponge appear to have returned to normal activity. Very little steam emanating from the disturbance breakout.
10257 16 Sep 2018 @ 1102 --- Graham Pump is active but the colorful runoff under the boardwalk is drying up.
1218 02 Jun 2013 @ 1200 02 Jun 2013 @ 1800 JSJ Pump Geyser was engaged in its usual, near-constant splashing play that cycled from low to moderately energetic - observed in the earliest afternoon on 2 June 2013.
1213 01 Jun 2013 @ 1200 01 Jun 2013 @ 1800 JSJ Pump Geyser was engaged in its usual perpetual spouting behavior, cycling from low splashing to moderately energetic splashing, back to low splashing - observed in the late afternoon of 1 June 2013.
101 11 Feb 2012 @ 0000 11 Feb 2012 @ 2359 BB Pump was not covered by OF steam for long periods of time today. I wrote down a lot of times but it will take forever to copy them all. If anyone ever needs them let me know. It looks like it is still erupting every 5 minutes or so.
Baseline does not exist.