Last Known Eruption
1y 73d 20h 17m ago

Interval Statistics

Interval Count24
Min12m
Max27y 325d 22h 41m
Mean1y 165d 11h 55m
Median12h 38m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
15475 09 Aug 2020 @ 1313 09 Aug 2020 @ 1741 JSJ All closed intervals. Filmed. Perforated Cone eruptions today correlated with rises in Lone Star's water level. Somewhat deep-pitched sizzling sounds accompanied each Perforated Cone eruption, which involved spitting and spritzing from multiple small vents.
1226 07 Aug 2013 @ 1425 --- JSJ Very small spitting/sputtering at 1425 on.
EntrySourceLinkComment
09 Aug 2020 @ 1551 JSJ https://www.youtube.com/watch?v=jaqBnD0xGqI#t=9m38s Clips 9-16 of this video (= time stamp 9:38 to the end) show Perforated Cone Geyser's 3:51 to 4:20 PM eruption on 9 August 2020.
09 Aug 2020 @ 1352 JSJ https://www.youtube.com/watch?v=jaqBnD0xGqI#t=7m23s Clips 6-8 of this video (= time stamp 7:23 to 9:37) show Perforated Cone Geyser's 1:52 to ~2:11 PM eruption on 9 August 2020.
09 Aug 2020 @ 1313 JSJ https://www.youtube.com/watch?v=jaqBnD0xGqI Clips 1-5 of this video (= beginning to time stamp 7:22) show Perforated Cone Geyser's 1:13 to 1:34 PM eruption on 9 August 2020.
Baseline does not exist.