| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 22085 |
23 Jun 2022 @ 1614 |
--- |
cb |
More active boil than previously observed on both side of the "island rock". Blooping to ~4" |
| 21704 |
03 Jun 2022 @ 1212 |
--- |
MAB |
trickle overflow - both vents roiling |
| 21480 |
25 May 2022 @ 0828 |
--- |
TSBryan |
minimal bubbling, overflow barely a trickle |
| 21292 |
15 May 2022 @ 1926 |
--- |
MAB |
boil from both sides - moderate overflow |
| 21294 |
15 May 2022 @ 1300 |
--- |
MAB |
light boil - left side only |
| 21206 |
06 May 2022 @ 1931 |
--- |
MAB |
less boil between the vent rocks than this a.m. - still light boil to the left - moderate ovfl at BW bridge |
| 21202 |
06 May 2022 @ 1311 |
--- |
MAB |
strong ovfl - boils between vent rocks and left side of rocks too |
| 21058 |
23 Apr 2022 @ 1329 |
--- |
DanS |
Blooping boils with small splashes from far left vent. |
| 21025 |
18 Apr 2022 @ 1305 |
--- |
MAB |
trickle overflow |
| 20335 |
06 Nov 2021 @ 0817 |
--- |
MAB |
visible boil w gentle waves |
| 20306 |
04 Nov 2021 @ 0838 |
--- |
MAB |
very light boil - small ripples - steamy |
| 20258 |
31 Oct 2021 @ 0844 |
--- |
MAB |
slight overflow |
| 20202 |
29 Oct 2021 @ 0859 |
--- |
MAB |
minimal boil - slight ovfl |
| 20100 |
24 Oct 2021 @ 1743 |
--- |
MAB |
trickle overflow - no boil seen by vents |
| 20113 |
24 Oct 2021 @ 0932 |
--- |
MAB |
very small boil seen over one vent - not strong - tiny ripples on pool |
| 20088 |
22 Oct 2021 @ 0902 |
--- |
MAB |
too steamy to see vent area but lightest of light ripple waves and no sounds |
| 20046 |
19 Oct 2021 @ 1310 |
--- |
cb |
no change. pool is a yellowish blue green, clear & roiling bubbles on either side of the rock |
| 20017 |
17 Oct 2021 @ 1725 |
--- |
MAB |
no boil seen - trickle overflow w foamy junk below bridge |
| 19896 |
05 Oct 2021 @ 1750 |
--- |
MAB |
pretty good 3 point boil w steady overflow |
| 19228 |
01 Sep 2021 @ 1627 |
--- |
MAB |
trickle overflow |
| 18832 |
04 Aug 2021 @ 0855 |
--- |
MAB |
light boil but virtually no overflow |
| 18334 |
09 Jul 2021 @ 0845 |
--- |
MAB |
moderate overflow - Branch Sp in a Very vigorous boil via sound and waves - too steamy to see a thing |
| 18275 |
05 Jul 2021 @ 1531 |
--- |
cb |
pool is about 2" below high water mark. Roiling boil 2 - 4" on either side of the rock formation |
| 18262 |
03 Jul 2021 @ 0849 |
--- |
MAB |
moderate overflow - Branch Sp was quiet |
| 18150 |
28 Jun 2021 @ 1946 |
--- |
MAB |
very light overflow |
| 18156 |
28 Jun 2021 @ 0834 |
--- |
MAB |
moderate overflow |
| 18091 |
25 Jun 2021 @ 1139 |
--- |
MAB |
moderate overflow |
| 17928 |
19 Jun 2021 @ 0900 |
--- |
MAB |
strong overflow |
| 17802 |
15 Jun 2021 @ 1109 |
--- |
cb |
blooping boil 2"-3". in good overflow |
| 17799 |
14 Jun 2021 @ 0902 |
--- |
MAB |
strong overflow |
| 17462 |
04 Jun 2021 @ 0924 |
--- |
MAB |
good overflow |
| 17205 |
27 May 2021 @ 1953 |
--- |
MAB |
fairly strong overflow- small waves on pool |
| 17183 |
25 May 2021 @ 0907 |
--- |
MAB |
light overflow |
| 17142 |
19 May 2021 @ 0923 |
--- |
MAB |
light overflow |
| 17121 |
17 May 2021 @ 2019 |
--- |
MAB |
in overflow |
| 17120 |
17 May 2021 @ 0928 |
--- |
MAB |
in overflow |
| 17034 |
09 May 2021 @ 1302 |
--- |
cb |
pool is a murky yellow/ lime green color with a 2" roiling boil over both main vents. |
| 16972 |
30 Apr 2021 @ 0922 |
--- |
MAB |
light overflow |
| 16890 |
20 Apr 2021 @ 0942 |
--- |
MAB |
quiet |
| 16349 |
06 Oct 2020 @ 1322 |
--- |
cb |
light emerald green in color with 3 mildly roiling points on the east side of the rock. Occational roiling activity on the other side of the rock. |
| 16267 |
26 Sep 2020 @ 1602 |
--- |
cb |
clear, green in color with a weak boil |
| 15554 |
13 Aug 2020 @ 1118 |
--- |
cb |
Pool is SO clear and beautiful! average boil over the vent at the edge of the big rock. |
| 14924 |
10 Jul 2020 @ 1155 |
--- |
bbev |
Moderate boil and light runoff from very clear pool. |
| 14602 |
11 Jun 2020 @ 1749 |
--- |
cb |
pool is a pretty, clear, emerald green color with 2 rolling bubblers that break the surface on the N side of the big rock in the pool. |
| 13386 |
25 Aug 2019 @ 0633 |
--- |
ypcaribou |
Splashing up to left of long rock in at least 2 spots maybe 6" to a foot. Light overflow on right side of channel. |
| 13383 |
24 Aug 2019 @ 1944 |
--- |
MAB |
Strongest boil I've seen in a long time - left of the rock.
Normal low boil to the right of the rock. |
| 13010 |
03 Aug 2019 @ 1955 |
--- |
Stephen_Gemar |
Boiling in a couple of spots to the left of the big boulder, and light roiling in 1 spot to the right of the big boulder. A little water trickling into the runoff channel. |
| 12007 |
28 Jun 2019 @ 1053 |
--- |
ypcaribou |
Water trickling into runoff channel. Roiling in blue water to left of big boulder. |
| 12006 |
28 Jun 2019 @ 0638 |
--- |
ypcaribou |
No water flowing into runoff channel. Water at left edge of pool about an inch lower than prior observations since May 2018. |
| 11619 |
07 Jun 2019 @ 0944 |
--- |
CrisG |
Boiling to 6-8" left of the large center rock. Pool gently overflowing. Water is still green but is clearer than "normal". |
| 11383 |
27 May 2019 @ 0933 |
--- |
jkgood |
In overflow. Spluttering and boiling to 6” |
| 11670 |
24 May 2019 @ 0915 |
--- |
Ben VL |
Boiling a few inches high in two or three spots (plus some smaller boiling spots) near and along the left side of the rock that sticks out of the middle. |
| 11316 |
22 May 2019 @ 0657 |
--- |
Kyle |
overflowing, gentle boiling 8-10 inches to left of center rock in crater |
| 11329 |
21 May 2019 @ 0938 |
--- |
Kyle |
pool calm and quiet. barely overflowing |
| 11332 |
20 May 2019 @ 0915 |
--- |
Kyle |
quiet pool, very light overflow |
| 9519 |
07 Aug 2018 @ 1147 |
--- |
bbev |
Water in crater is clearer than I have seen this year, no change in runoff. |
| 19283 |
05 Jul 2018 @ 1201 |
--- |
research-mab |
7-5-2018 MONARCH BBEV 1201 See Note under Steamboat
Porcelain Basin still very active, but appears drier. Congress pool down 4-6" from yesterday, still boiling vigorously. Emerald Springs and Monarch runoff appears to have increased. Monarch geyser crater has clearer water and much fuller. Corperal boiling, runoff wet. Cistern did not look any different, boiling steadily, just at overflow. Emerald Springs is still cloudy but with noticeably less boiling.
https://geysertimes.org/note.php?id=9039 |
| 3227 |
24 Jun 2016 @ 1113 |
--- |
David |
level high. bubbling in larger pool, left side of island. see photo: https://www.flickr.com/photos/ujelang/27505616783/in/dateposted-public/ |
| 1577 |
11 May 2015 @ 1308 |
--- |
MAB |
heavy overflow |
| 4722 |
23 Jun 1994 @ 1800 |
--- |
research-mab |
June 23 1994 – Monarch having series of eruptions then days of nothing |
| 12653 |
31 May 1994 @ 0000 |
31 May 1994 @ 2359 |
JarnoO |
active |
| 12652 |
30 May 1994 @ 0000 |
30 May 1994 @ 2359 |
JarnoO |
active |
| 12651 |
29 May 1994 @ 0000 |
29 May 1994 @ 2359 |
JarnoO |
active |
| 22237 |
25 Mar 1978 @ 1800 |
--- |
research-mab |
Mar 25 1978 no specific time
Monarch Geyser – clear green water, activity in main vent only.
NOTE this date also contains multiple feature temperatures as is common through 70s-90s |
| 22234 |
25 Aug 1977 @ 0840 |
--- |
research-mab |
08/25/1977 appprox time
Monarch Geyser + Fearless continue very vigorous boiling. Palpitator Spring drained at 8:40. |
| 22233 |
07 Sep 1976 @ 1800 |
--- |
research-mab |
9-7-1976 no specific time noted
Monarch still pale gray, with lots of gray material in the pool. Water level is up and for the first time this season, bubbling is occurring in both vents. |
| 22231 |
10 Jul 1976 @ 1800 |
--- |
research-mab |
July 10 1976 no specific time noted
New Feature between Monarch Geyser and Minute Geyser. The feature is east of the trail and as you face the runoff channel from Emerald Spring - - this new pool is to the right. Distance from trail is appropriately 30 feet. Water color is cloudy grey and it is hot. |
| 22230 |
25 May 1976 @ 1800 |
--- |
research-mab |
May 25 1976 no specific time
Monarch Geyser is bubbling less in its main vent, while there’s no bubbling at all in the smaller vent. |
| 5687 |
07 Sep 1975 @ 1800 |
--- |
research-mab |
09/07/1975
A new spring has opened up in the runoff channel of Emerald due north of Monarch Geyser Crater. All water from Emerald drains down vent. |
| 22229 |
28 Aug 1975 @ 1801 |
--- |
research-mab |
8-28-1975 no time noted
Monarch Geyser – Again noticed increased activity in the usually less active vent- boiling was higher, more widespread. |
| 22228 |
28 Aug 1975 @ 1800 |
--- |
research-mab |
8-28-1975 no specific time
Monarch Geyser has returned to its usual shade of green. |
| 5655 |
24 Aug 1975 @ 1800 |
--- |
research-mab |
08/24/1975 Monarch Geyser – boiling has decreased in vent lying between the 3 large rocks. Is back to normal. Same with front vent. |
| 5644 |
21 Aug 1975 @ 1800 |
--- |
research-mab |
08/21/1975 Monarch Geyser – looks almost the same as it did immediately after the June 30th quake. Material of a deep charcoal gray color now covers the pool area, runoff channels. & makes the water in the vents quite cloudy. Great increase in activity in vent lying between the 2 large rocks. Large boiling spot located near edge of pool is perhaps 2’ in diameter & 6” high. Scattered bubbles rising in rest of vent. In “front” vent, (main pool area), boiling has also increased in size of area boiling as well as vigor. |
| 5664 |
05 Aug 1975 @ 1800 |
--- |
research-mab |
08/05/1975 Monarch Geyser Crater producing some kind of film on the water. |
| 22227 |
14 Jul 1975 @ 1800 |
--- |
research-mab |
07/14/1975 no specific time generic end of day time
Minute Geyser has cleared up almost completely as have Monarch and Palpitator. |
| 5647 |
21 Jun 1975 @ 1530 |
21 Jun 1975 @ 1630 |
research-mab |
08/21/1975
What’s Going On? Monarch is spouting steam bubbles from its quiet side as much as it does from its active side. Cistern appears to be more violent, and Emerald has gone crazy. (Observed in Walk 6, 3:30 to 4:30) |
| 22226 |
07 Jun 1975 @ 1800 |
--- |
research-mab |
6-7-1975 generic end of day time- no time given
Monarch – green color beginning to return to water |
| 6525 |
10 Sep 1971 @ 1800 |
--- |
research-mab |
09/10/1971 Monarch Geyser Crater – the water is still a yellow-green in color, apparently from the sulphur down below but today has started to become slightly turbid from the boiling activity; it has been increasing in vigor very slowly over the past 3-4 weeks. |
| 7408 |
21 Jul 1968 @ 1800 |
--- |
research-mab |
07/21/1968
Monarch – H2O from vents surging 5-6 inches. Temp 199.7F |
| 7329 |
08 Sep 1967 @ 1800 |
--- |
research-mab |
09/08/1967 Monarch Geyser Whereas Monarch appeared to be a quiet, almost stagnant, pool early this summer, it is now a very clear green color and boiling vigorously. Two vents boiled continuously on the east side of a rock that extends across the pool dividing it into two large rifts. The vents are 198.8ºF and boil up 3-4 inches. No record was made of Monarch early this summer because it showed very little activity. Correction: Ed Leigh recorded 194º on June 22 and ph5 at 140º |
| 6764 |
16 Oct 1964 @ 1800 |
--- |
research-mab |
10/16/1964 Monarch is clear & there is very little agitation at 187º |