Last Known Eruption
5y 59d 8h 58m ago

Interval Statistics

Interval Count30
Min3m
Max12y 66d 20h 59m
Mean263d 5h 40m
Median10d 21h 36m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
6290 12 Sep 2017 @ 0730 --- TSBryan possibly active. surrounding platform wet, including raised places, and numerous puddles all around.
2514 10 Oct 2015 @ 0836 --- Janet Jones Water at about half. A visitor said it was "way up" from yesterday.
1500 06 Jan 2015 @ 0800 06 Jan 2015 @ 1700 MAB Guides reported Opal dark and murky on Jan 6 - no further information yet
1494 26 Dec 2014 @ 1000 --- ACarlson A guide reported that Opal Pool is empty.
1426 27 Sep 2014 @ 1030 --- meide Opel pool was full and overflowing at 1030.  It was cold also, no steam on a cold and rainy day.
1421 25 Sep 2014 @ 0800 --- udo Opal continues to fill. Water level at 0800 was over a foot higher than yesterday at about 1700.
1417 24 Sep 2014 @ 1123 --- udo Water IS visible as of 1123 24 September 2014
1245 23 Sep 2014 @ 1642 --- udo Drained.
1065 06 May 2014 @ 1915 --- WillBoekel ~1915 drained
12309 01 Sep 1993 @ 1455 --- JarnoO still marked
12149 11 Feb 1993 @ 0830 --- JarnoO marks present
12145 09 Feb 1993 @ 1600 --- JarnoO mark present; Opal low and turbid and stinking; runoff channels cut through snow
12144 09 Feb 1993 @ 0900 --- JarnoO marked
7656 18 Jul 1979 @ 1800 --- research-mab 7-18-79 Opal Pool (?) having eruptions every 1-3 days.
No attachments for this geyser.
Baseline does not exist.


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