Last Known Eruption
2y 99d 15h 3m ago

Latest Eruptions

Eruption DurationInterval
18 Jun 2016 @ 1010 ie

Interval Statistics

Not enough entries to compute statistics.

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10181 13 Sep 2018 @ 1253 --- cb water level is just at the inner rim. (3.5 - 4' below overflow rim) It has a vigorous 1.5' boil and is a muddy light brown color.
9832 22 Aug 2018 @ 1828 --- cb Is boiling, water is a brown/muddy color and water level is up to the small gravelly peoples within its crater. (4.5' below rim)
9611 10 Aug 2018 @ 1355 --- MAB Very Low Water only back near the vent. Color was mud puddle brown but fairly clear - not opaque mud. "Dirty water" was described.
9131 11 Jul 2018 @ 0927 --- Tara Water level down about 4 feet from rim of crater, continuously bursting brownish water to 1-3 feet.
8886 21 Jun 2018 @ 0934 --- Polly Grayish brown pool with a constant boil. Pool appears to be down several inches.
8797 19 Jun 2018 @ 1830 --- cb water level is higher. boil is the same
7539 29 Sep 2017 @ 1520 --- Tara Water level down, bursting brown water to ~4 feet.
3566 28 Aug 2016 @ 1920 --- MAB Fuller and clear blue-ish in color. I will edit this when I find out if this was gradual or happened on a certain day.
3131 24 Jun 2016 @ 2258 --- David @1054 water was muddy, about 1-1.5 feet below rim, and vigorously boiling closer to south (right) portion of pool. height of boiling about 6-10". see: https://www.flickr.com/photos/ujelang/27889866285/in/dateposted-public/
2940 01 Jun 2016 @ 1223 --- MAB Water dropped recently- not sure if that has been posted here
2830 09 May 2016 @ 1341 --- MAB Water level is down about 1' lower than previously. Still really really full though compared to recent years.
2812 02 May 2016 @ 1700 --- MAB still full to the brim w boiling from the vent
2791 15 Apr 2016 @ 1600 --- MAB Full full full!
4738 21 Jun 2001 @ 1050 --- research-mab 06/21/2001 Yellow Funnel Spring – as of today 1050 am H20 is muddy + lower than 6/20 by 3”
4739 20 Jun 2001 @ 1800 --- research-mab 06/20/2001 Yellow Funnel Spring water level very high, very muddy, w/ splashes reaching 3 ft above water level and close to trail
4737 18 May 2001 @ 1800 --- research-mab 05/18/2001 Yellow Funnel Water is back
4736 02 May 2001 @ 1800 --- research-mab 05/02/2001 Yellow Funnel steam vent!!
7607 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Yellow Funnel Spring – yellow sulfur-rich dunes or drifts present over ~35% of bottom up to 2-3cm thick, concentrated by circular currents. Water level less than 2cm below overflow.
5139 09 Jun 1980 @ 1800 --- research-mab 06/09/1980 Yellow Funnel Spring- beautiful yellow green with clear overflowing water 164ºF
5073 16 Oct 1979 @ 1800 --- research-mab 10/16/1979 Yellow Funnel and Son of Green Dragon are overflowing again with muddy brown water.
4994 21 Sep 1979 @ 1800 --- research-mab 09/21/1979 Disturbance - Yellow Funnel Spring – dark brown green water – much different looking. Bubbling gently 160ºF
5643 21 Aug 1975 @ 1800 --- research-mab 08/21/1975 Yellow Funnel Spring – is now a very muddy brown, with increased boiling at center. Boiling area is about 12-2’ in diameter & boils perhaps 5” high.
6199 03 Oct 1973 @ 1800 --- research-mab 10/03/1973 Yellow Funnel Spring – green color similar to sign lettering w/some yellow along sides.
6156 17 Sep 1973 @ 1800 --- research-mab 09/17/1973 Yellow Funnel still at very low water level (approx 3’ from summer water level) – water is very dark brown (muddy) with heavy “boiling” appearance.
6093 03 Sep 1973 @ 0900 --- research-mab 09/03/1973 Back Basin 900am Yellow Funnel (down 4”)
6090 01 Sep 1973 @ 1800 --- research-mab 09/01/1973 Yellow Funnel very low & muddy
6466 17 Sep 1972 @ 1800 --- research-mab 09/17/1972 Yellow Funnel is coming up and is an opaque green.
6460 10 Sep 1972 @ 1800 --- research-mab 09/10/1972 Yellow Funnel Spring – water stable at 14 inches below the normal level – still an opaque medium dark brown.
6575 05 Oct 1971 @ 1800 --- research-mab 10/05/1971 Yellow Funnel Spring - down 12 inches
6475 02 Oct 1971 @ 1800 --- research-mab 10/02/1971 Yellow Funnel Spring – water level down about 6” from normal level
6514 25 Sep 1971 @ 1800 --- research-mab 09/25/1971 Yellow Funnel Spring – bubbling action in center at least as active as September 10, still medium muddy brown, but water level still dropping – now 7-8 inches below normal.
6529 10 Sep 1971 @ 1800 --- research-mab 09/10/1971 Yellow Sulfur Funnel – very muddy brown, can only see to a depth of around 3 minutes – bubbling activity in the center has increased
7416 16 Jul 1968 @ 1800 --- research-mab 07/16/1968 Yellow Funnel Spring is a gray color.
No attachments for this geyser.
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 2011-2018

Facebook Page Telegram Channel Google+ Page 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.