| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 39845 |
13 Jun 2025 @ 1144 |
--- |
MAB |
full w lighter center - Iris Spring active |
| 39745 |
08 Jun 2025 @ 1100 |
--- |
MAB |
full with mild center boil - Iris Spring active |
| 39481 |
29 May 2025 @ 1237 |
--- |
MAB |
pretty good center boil but I wouldn't call them bursts- Iris Spring active |
| 39224 |
21 May 2025 @ 1325 |
--- |
MAB |
hanging out at overlook did not see any bursts from Blue |
| 38936 |
10 May 2025 @ 1130 |
10 May 2025 @ 1140 |
MAB |
more large bursts seen from above - Iris Spring acti |
| 38783 |
03 May 2025 @ 1250 |
--- |
MAB |
Full with opalescent blue water - slight movement in center - Iris Spring = active |
| 38695 |
27 Apr 2025 @ 1144 |
--- |
MAB |
pearly blue in color and full - Iris Spring active |
| 38511 |
19 Apr 2025 @ 1327 |
--- |
MAB |
full - wind direction impossible to see any boil - Iris Sp also obscured by heavy steam |
| 38423 |
10 Apr 2025 @ 1523 |
--- |
SantaFe108 |
Light blue, no boiling observed. |
| 38292 |
23 Feb 2025 @ 1530 |
--- |
K.Cooper |
full and bright blue. no visible boiling. |
| 38020 |
15 Dec 2024 @ 1550 |
--- |
SantaFe108 |
No eruptions observed during our visit. |
| 37859 |
31 Oct 2024 @ 0850 |
--- |
MAB |
no view |
| 37771 |
25 Oct 2024 @ 1200 |
25 Oct 2024 @ 1720 |
MAB |
Surf's Up! Bursts seen from Constant- many wide and round others taller spikes - will look at photos when steam cleared for 2sec add pool level if I can tell - dry dry to the east of it too steamy to see where the outwash is going |
| 37508 |
10 Oct 2024 @ 1320 |
--- |
SantaFe108 |
Full of blue, milky water. Cannot see Onyx or Iris. |
| 36797 |
06 Sep 2024 @ 1313 |
--- |
cb |
pool is just at overflow. gentle boil over the vent that is putting out some convection waves. Iris not active. |
| 35409 |
21 Jun 2024 @ 1330 |
21 Jun 2024 @ 1348 |
nails |
Light opalescent blue, roiling and convection every minute or so, occasionally resulting in a burst but usually not. |
| 35145 |
12 Jun 2024 @ 1000 |
--- |
CrisG |
calm. no activity noted from boardwalk above or Constant bench sit |
| 35066 |
10 Jun 2024 @ 0906 |
--- |
SantaFe108 |
Not erupting currently. |
| 34242 |
19 Apr 2024 @ 1130 |
--- |
MAB |
Looked full and a bit cloudy during one very brief glance but mostly impossible to see due to steam from features nearby - couldn't even spot Iris or Onyx and didn't go back in evening |
| 29046 |
22 Oct 2023 @ 1302 |
--- |
SantaFe108 |
Full and blue with boiling. Iris Spring and Onyx Spring active. |
| 28851 |
17 Oct 2023 @ 1615 |
--- |
MAB |
can't find BLUE! Strong steam in strong winds upwind - steam parted for a glimpse it looks 2ft low and steam may be from Iris Sp but not sure. Swiss Cheese pools an odd gray color - other Porcelain areas also show a water level drop |
| 28644 |
05 Oct 2023 @ 1411 |
--- |
cb |
pool is high with vigorous roiling boil in the center. Iris is active erupting 2-3'. Several other vents is the area of Iris that are active. |
| 28299 |
17 Sep 2023 @ 1202 |
--- |
SantaFe108 |
Full with turquoise-green water and calm. Iris Spring is active. |
| 26837 |
04 Jul 2023 @ 1414 |
--- |
MAB |
full w/center boil- lighter colloidal blue in center - Iris Spring active |
| 25722 |
23 May 2023 @ 1316 |
--- |
cb |
is high with no activity |
| 24506 |
28 Oct 2022 @ 1550 |
--- |
MAB |
full with colloidal blue center - Iris Spring erupting gangbusters |
| 24269 |
05 Oct 2022 @ 1604 |
--- |
cb |
pool is higher than last observation, at the rim and overflowing. weak center vent convection. Iris is active to 2+'. |
| 23663 |
08 Sep 2022 @ 1050 |
--- |
MAB |
maybe 2ft low- IRIS is opalescent blue and weakly active - ONYX looks empty w binos or at least totally clear and quiet |
| 23566 |
04 Sep 2022 @ 1334 |
--- |
cb |
low, ~3' below rim. Turquoise opalescent blue with a boil only identified with binoculars. No features surrounding Blue are active. |
| 23056 |
05 Aug 2022 @ 1328 |
--- |
cb |
pool low! down 2' from overflow. opalescent blue in the center. Iris not active |
| 22857 |
26 Jul 2022 @ 1200 |
--- |
cb |
About 2' below overflow with a weak center vent boil. Iris has a occational 6"-1' splash. not much else in the area is active |
| 22699 |
19 Jul 2022 @ 1225 |
19 Jul 2022 @ 1229 |
nails |
Colloidal blue, slight boil or convection. Water level might be lower than previous note - I can see a “shoreline” of a few feet around pool and no obvious overflow. Iris splashing to a few feet with some quiet pauses. |
| 22665 |
17 Jul 2022 @ 1111 |
--- |
MAB |
approx time - full, minimal boil - colloidal blue in center |
| 22530 |
12 Jul 2022 @ 1620 |
--- |
cb |
pool high with only 1 slight bubble in the center. Iris bursting to 2' |
| 22274 |
01 Jul 2022 @ 1334 |
--- |
MAB |
Iris Sp active - Blue center vent not IE |
| 22168 |
27 Jun 2022 @ 1120 |
--- |
MAB |
IE w low center boil - IRIS Sp very active huge bursts - vent to E & S in Blue's crater also active - some water flowing east to dry area but not far |
| 22081 |
23 Jun 2022 @ 1540 |
--- |
cb |
Pool is high, weak boil, color is very blue! |
| 21455 |
23 May 2022 @ 1225 |
--- |
MAB |
full - a colloidal blue color - east vent in the pool was very active w some tall bursts! |
| 21298 |
15 May 2022 @ 1229 |
--- |
MAB |
quite full - Iris Spring active |
| 21030 |
18 Apr 2022 @ 1241 |
--- |
MAB |
Low- Iris Spring active |
| 20322 |
06 Nov 2021 @ 1700 |
--- |
MAB |
possibly a little more water than lately - Huge bursts from Iris Spring |
| 20044 |
19 Oct 2021 @ 1239 |
--- |
cb |
still very low pool. weak center boil. Iris & Onxy pools are very low but splashing ~1' in the vent |
| 19922 |
06 Oct 2021 @ 1557 |
--- |
cb |
pool very low. Down ~4' below the north rim. weak center boil. |
| 19116 |
27 Aug 2021 @ 1334 |
--- |
MAB |
very low water- several feet of shore within the crater visible- Iris Spring active. Onyx Spring active |
| 18996 |
22 Aug 2021 @ 1314 |
--- |
MAB |
very low |
| 18885 |
10 Aug 2021 @ 1015 |
--- |
cb |
Pool is VERY low. ~2+ feet below the rim. side vent is active. |
| 18763 |
31 Jul 2021 @ 1250 |
--- |
MAB |
Low water - center vent quiet - east vent chugging away |
| 18668 |
25 Jul 2021 @ 1840 |
--- |
cb |
Blue pool is VERY LOW. down ~3'+. slight boil in the center. Iris is active asis Onyx |
| 18442 |
14 Jul 2021 @ 1856 |
--- |
MAB |
Not full with a visible 4 pt boil - 2 were the usual center and east - the others N and S. Iris and Onyx active |
| 18273 |
05 Jul 2021 @ 1601 |
--- |
cb |
Pool is high and overflowing to the north. It has a boil in the center and one near the edge closest to Nuphar lake. Iris is active as are many features and holes in Porcelain basin. |
| 18044 |
22 Jun 2021 @ 1234 |
--- |
MAB |
Full - as before dry to the north flooded to SE - Iris Sp IE with robust bursts- Onyx IE w large {for it} bursts too |
| 17453 |
04 Jun 2021 @ 1832 |
--- |
MAB |
Full - crazy storm winds but could see smooth convection in the middle against the wind driven waves - Iris active - funky lighting could not even find Onyx - area N of Blue dry - waters all flow S against the berm |
| 17284 |
30 May 2021 @ 1439 |
--- |
cb |
Down ~8" below overflow. Iris is active |
| 17069 |
12 May 2021 @ 1410 |
--- |
MAB |
Full, too steamy to see in. IRIS Spring having Big Bursts |
| 16939 |
28 Apr 2021 @ 1839 |
--- |
MAB |
area north of Blue looks fairly dry - area south of Blue is flooded - water in Blue down about 8in - Iris is active |
| 16351 |
06 Oct 2020 @ 1505 |
--- |
cb |
pool is high, the center is turquoise blue with a very weak bubble in the center. The side vent on the south end of the pool is underwater and with binoculars I can see small convection waves. |
| 16210 |
20 Sep 2020 @ 1635 |
--- |
cb |
water level has come up quite a bit and now includes the small erupting feature on the south end of the pool that was separated by dry land earlier this summer. Color is a milky turquoise blue and has a weak boil in the center. |
| 15789 |
29 Aug 2020 @ 1017 |
--- |
cb |
pool has come up since last observed. It is a opalescent turquoise blue color with a weak boil in the center. The side perpetual feature to the east is again connected with water in the pool. (higher water marker) Iris active also |
| 15555 |
13 Aug 2020 @ 1227 |
--- |
cb |
pool is low and milky turquoise in color |
| 15454 |
07 Aug 2020 @ 1150 |
--- |
cb |
Blue's pool is higher than the 7/27th when i was last able to walk Porcelain basin. Iris is active. Blue has a active boil in the center. Porcelain basin looks more active than I've seen this summer. More features full and erupting. hummm.... |
| 14946 |
10 Jul 2020 @ 1315 |
--- |
cb |
Blue's pool is very low! The erupter that was IN the pool on the south end is now exposed and is ~2' away from the edge of Blue's pool. No bubbles or boils from Blue. The side erupter is about 2' in height. |
| 14599 |
11 Jun 2020 @ 1636 |
--- |
cb |
pool is turquoise blue in the center with bubbles in the center that are not quite breaking the surface. On the SE edge of the pool is a 1' spouter that did not stop during my observation period |
| 13248 |
14 Aug 2019 @ 1519 |
--- |
cb |
pool is low and calm. |
| 13050 |
05 Aug 2019 @ 1728 |
--- |
MAB |
low water level. Iris Spring is more active and Onyx is REALLY more active |
| 12443 |
11 Jul 2019 @ 1641 |
--- |
cb |
water level is high with some overflow to the north. Occasional small bubbles breaking the surface in the middle of the pool and a constant small (6") erupter on the south end of the pool |
| 12037 |
29 Jun 2019 @ 1401 |
--- |
cb |
calm and quiet. |
| 11827 |
16 Jun 2019 @ 1034 |
--- |
cb |
VERYsteamy and almost impossible to see the water level in the pool (63°) I can see a boil on the south edge of the pool. |
| 11019 |
20 Apr 2019 @ 1000 |
--- |
MAB |
Blue Geyser is full, Iris Spring was erupting vigorously. |
| 10628 |
19 Oct 2018 @ 1215 |
--- |
MAB |
Still very low - hard to discern crater edge since it's as white as surrounding platform. The fill vent on the east side was just at water's edge. LOW. Iris was active with tiny blips. |
| 9695 |
10 Aug 2018 @ 1200 |
--- |
MAB |
Seen various times during the day. Water level still well below rim, no boiling. Iris has blips, Onyx is quiet. |
| 9506 |
06 Aug 2018 @ 1232 |
--- |
MAB |
Much lower water than my last visit, viewed again later in the day it was the same, but I don't know if it is stable or changing daily. Much lower than rim level |
| 9447 |
03 Aug 2018 @ 1530 |
--- |
cb |
calm and no boil |
| 9000 |
03 Jul 2018 @ 1300 |
--- |
MAB |
Strong convection but didn't notice any of the bursting today.
The smaller east vent was IE off and on.
ONYX, lower water but still having big bursts all day.
Trail past Hurricane closed for construction |
| 5868 |
04 Sep 2017 @ 1356 |
--- |
novakg |
Possible Blue eruptions throughout the day. Something large was erupting out there, but I am not sure about the location of Blue. |
| 4812 |
05 Aug 2017 @ 1800 |
--- |
MAB |
seen overflowing to the west this week |
| 4239 |
06 Jun 2017 @ 1325 |
--- |
JSJ |
Pool nearly full; no overflow. Slight roiling & bubbling from ~center of pool. Receiving some upstream runoff. |
| 4214 |
04 Jun 2017 @ 1630 |
--- |
MAB |
Nearly full but not overflowing in any direction. Light blue color with strong convection and roiling. Iris was active. |
| 3567 |
28 Aug 2016 @ 1345 |
--- |
MAB |
Seen really low on 24th with active filling from that east vent, further observed after several hours it had not refilled any higher. Seen at the same low depth today 28th- don't know if it has filled and drained or is just ... very low now. |
| 2945 |
01 Jun 2016 @ 1515 |
--- |
MAB |
Full with strong convection or boils |
| 2378 |
18 Sep 2015 @ 1135 |
--- |
MAB |
Full full full, now overflowing to the outer, outer rim of westerly terraces. Steam obscured the pool all day |
| 2356 |
15 Sep 2015 @ 1715 |
--- |
MAB |
Observed completely full all day, heavy roiling in the center. Light greenish in color. It was at or near overflow in the Iris Spring area, the fullest I have seen in some time. |
| 2335 |
12 Sep 2015 @ 1029 |
12 Sep 2015 @ 1900 |
MAB |
Empty yesterday. Full to the rim 1029 today, with the vent on the east completely submerged. Active convection in the middle increased by 1045 and another vent on the north seen with the naked eye. Returning from back basin at 1512, it was only 1/3 full with heavy roiling in the middle. What happened between 1100 and 1500 is anyone's guess. |
| 2325 |
11 Sep 2015 @ 1039 |
11 Sep 2015 @ 1225 |
MAB |
empty. The east side spouter was barely splashing, definitely a different look than the active refilling I had seen previously. |
| 2267 |
04 Sep 2015 @ 1010 |
--- |
MAB |
Empty 1000. Seen still (or again) empty at 1530 |
| 2226 |
31 Aug 2015 @ 1107 |
31 Aug 2015 @ 1840 |
MAB |
Seen about half empty 1107, filling and full to the level of the sput on the East side, then seen quite empty again at 1800. I still have yet to see what is happening and why it drains - - an eruption or someone pulls the plug? |
| 2109 |
12 Aug 2015 @ 1140 |
12 Aug 2015 @ 1440 |
MAB |
This year I have seen Blue with high water and low water. On this day I saw it visibly refilling. Very very low at 1140 and nearly full by 1440 |
| 1470 |
25 Oct 2014 @ 0000 |
25 Oct 2014 @ 2359 |
MAB |
Visible convection/boils on Blue from the overlook |
| 1202 |
05 Sep 2014 @ 0000 |
05 Sep 2014 @ 2359 |
MAB |
Good convection in Blue, from such a distance at the overlook I could probably call it good boils. |
| 29426 |
04 Jul 2012 @ 1435 |
--- |
research-mab |
7/4/2012 Blue Geyser nearly drained 1435, full again 1633 |
| 29385 |
30 Jul 2010 @ 1200 |
--- |
research-mab |
7/30/2010 - no time noted - I watched Blue Geyser for a little while, and feel safe to say that it is currently erupting. There is a steady intermittent boil with surges up to ~ 3 ft. |
| 29377 |
05 Jul 2010 @ 1200 |
--- |
research-mab |
7/5/2010 - no time noted - Blue in porcelain springs unusually active |
| 29942 |
19 May 1998 @ 1200 |
--- |
research-mab |
5/19/1998 - no time noted - FYI to staff: Blue is active. |
| 29921 |
06 Apr 1998 @ 1200 |
--- |
research-mab |
4/6/1998 - no time noted - Lots of interesting things going on in Porcelain Basin... . Blue geyser is quiet. |
| 29997 |
26 Aug 1997 @ 1200 |
--- |
research-mab |
8-26/1997 - no time noted - Blue Geyser still seems to have a bit of indigestion |
| 29988 |
11 Aug 1997 @ 1200 |
--- |
research-mab |
8/11/1997 - no time noted - Level of Blue is higher today |
| 29987 |
09 Aug 1997 @ 1200 |
--- |
research-mab |
8/9/1997 - no time noted - Blue geyser is fluctuating its water level with activity. It is having tiny eruptions but is still very anemic. |
| 29983 |
04 Aug 1997 @ 1200 |
--- |
research-mab |
8/4/1997 - no time noted - Blue active & making noise (like a burp) |
| 29976 |
31 Jul 1997 @ 1200 |
--- |
research-mab |
7/31/1997 - no time noted - Pool on Blue seems to be fulling a little more each time I see it. |
| 29973 |
30 Jul 1997 @ 1055 |
30 Jul 1997 @ 1105 |
research-mab |
7/30/1997 Blue Geyser is increasing in activity – heavy boil / small eruptions around 1055-1105 |
| 30030 |
19 Jun 1996 @ 1200 |
--- |
research-mab |
6/19/1996 - no time noted - Blue Geyser is brown in color as is several small pools in the general area. |