Last Known Eruption
15d 2h 4m ago

Interval Statistics

Interval Count20
Min6m
Max1y 352d 1h 28m
Mean106d 17h 56m
Median20h 32m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
2054 08 Aug 2015 @ 1321 --- JSJ Vents 4, 5, and 6 of Gray Bulger Geyser (immediately east & southeast of the head of the J-shaped pool) were engaged in low to moderately low perpetual spouting, as usual. Vent IDs from: Gryc, S. 2016 (dated 2015). Firehole Lake geyser delights (but which geyser is it?). Geyser Gazer Sput 29(6): 5-8.
2670 03 Jun 2014 @ 1718 --- JSJ Vents 4, 5, and 6 of Gray Bulger Geyser (immediately east & southeast of the head of the J-shaped pool) were engaged in low to moderately low perpetual spouting, as usual. Vent IDs from: Gryc, S. 2016 (dated 2015). Firehole Lake geyser delights (but which geyser is it?). Geyser Gazer Sput 29(6): 5-8.
2671 31 May 2013 @ 2000 --- JSJ Vents 4, 5, and 6 of Gray Bulger Geyser (immediately east & southeast of the head of the J-shaped pool) were engaged in low to moderately low perpetual spouting, as usual. Vent IDs from: Gryc, S. 2016 (dated 2015). Firehole Lake geyser delights (but which geyser is it?). Geyser Gazer Sput 29(6): 5-8.
709 22 Sep 1976 @ 0000 22 Sep 1976 @ 1200 BoekelUpload Active am
708 11 Aug 1976 @ 0000 11 Aug 1976 @ 2359 BoekelUpload side jetting vent would sometimes take over function shooting to approx 20-25 ft for 5-10s TSB
707 06 Aug 1976 @ 1200 06 Aug 1976 @ 2359 BoekelUpload Evening. At least 20 ft
EntrySourceLinkComment
14 Jun 2019 @ 1341 JSJ https://www.youtube.com/watch?v=iDtgJMhjl_o Video compilation showing Gray Bulger Geyser erupting during the afternoon of 14 June 2019.
04 Aug 2018 @ 1147 JSJ https://www.youtube.com/watch?v=WJEssyTMIG4#t=5m04s Clips 15-19 of this video compilation (= time stamp 5:04 to the end) show Gray Bulger Geyser's activity in the earliest afternoon of 4 August 2018.
03 Aug 2018 @ 1904 JSJ https://www.youtube.com/watch?v=WJEssyTMIG4#t=2m44s Clips 8-14 of this video compilation (= time stamp 2:44 to 5:03) show Gray Bulger Geyser's activity in the evening of 3 August 2018.
02 Aug 2018 @ 1842 JSJ https://www.youtube.com/watch?v=WJEssyTMIG4 Clips 1-7 of this video compilation (= beginning to time stamp 2:43) show Gray Bulger Geyser's activity in the evening of 2 August 2018.
10 Jun 2018 @ 1630 JSJ https://www.flickr.com/photos/jsjgeology/43327450431 Photo (out of 4) of Gray Bulger Geyser in eruption during the afternoon of 10 June 2018.
12 Jun 2018 @ 1300 JSJ https://www.youtube.com/watch?v=6BgJ13qkTkc Time lapse video of Gray Bulger Geyser's activity during the afternoon of 12 June 2018.
Baseline does not exist.


All data is shown in US/Mountain timezone unless specified otherwise.

GeyserTimes.org is not affiliated with the National Park Service, but it is "for the benefit and enjoyment of the people".

If you have any questions or comments please contact: webmaster@geysertimes.org

Support open geyser data: Patreon Page

© Copyright 2011-2019

Facebook Page Telegram Channel Get it on Google Play Download on the App Store

Google Play and the Google Play logo are trademarks of Google LLC.

Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc., registered in the U.S. and other countries.