Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
28986 |
21 Oct 2023 @ 1605 |
--- |
JR |
Noticeable lower water level around pool. More clearly defined feature rather than covered with water. |
28643 |
05 Oct 2023 @ 1317 |
--- |
cb |
channels are dark green except for a whiteish section between the 2 active bubblers that are 15'-20' above Splutterpot. |
28355 |
19 Sep 2023 @ 0941 |
--- |
novakg |
There was white stuff in the runoff channel near Pinwheel and down the channel a bit. I'm not suggesting an eruption. Green stuff is all intact. Just hotter water near the Pinwheel vent. Basically confirming Carol's earlier observation. |
28235 |
12 Sep 2023 @ 1314 |
--- |
cb |
runoff channel closest to the pool is whiteish with green algae along the edges. 1/2 way to the boardwalk runoff channel is fully green. |
27312 |
29 Jul 2023 @ 0845 |
--- |
bbev |
Heavy runoff, channel is white with only a hint of red or green. Large steamcloud seen from museum. Could not see any water through all the steam, only heavy runoff, after walking down. |
27181 |
23 Jul 2023 @ 1521 |
--- |
mhreed |
Pea soup color mostly absent from runoff channel. |
25719 |
23 May 2023 @ 1102 |
--- |
cb |
flat calm pool, vent appears to be lighter in color than the surrounding pool. no activity & no evidence of recent activity. Runoff channels have narrow ribbons that are white but mostly green in color. |
24501 |
28 Oct 2022 @ 1838 |
--- |
MAB |
Channel Dark Green |
24266 |
05 Oct 2022 @ 1455 |
--- |
cb |
runoff channel is green again. |
22563 |
14 Jul 2022 @ 1040 |
--- |
cb |
has small blipping bubbles in the pool. |
22523 |
12 Jul 2022 @ 1402 |
--- |
cb |
Pinwheels channel is white! much of the green bacterial mat has been washed to white. Pinwheel has erupted sometime between friday and this afternoon |
29068 |
15 Jun 2022 @ 0950 |
--- |
research-mab |
6/15/2022 - Pinwheel bubbling 2” @ 9:50 am |
21288 |
15 May 2022 @ 1410 |
15 May 2022 @ 1420 |
mwolf |
small bursts every few minutes |
21205 |
06 May 2022 @ 1054 |
--- |
MAB |
channel green |
20180 |
28 Oct 2021 @ 0844 |
--- |
MAB |
channel below Pinwheel a striking dark green - a few white stripes immediately below small features but green returns asap and continues til it meets Whirligig runoff at the BW bridge just above the logger |
20001 |
16 Oct 2021 @ 1338 |
--- |
cb |
Run off channel is back to mostly green color |
19232 |
01 Sep 2021 @ 0902 |
--- |
MAB |
more green returning in center of channels not just edges - still very dark green upstream of Pinwheel's vent |
18761 |
31 Jul 2021 @ 1500 |
--- |
MAB |
After a heavy rain Pinwheel runoff changed to pea soup color - then to pistachio ice cream color - then to bad 2% milk color - during the deluge these colors were visible above Pinwheel - after waters went down more pronounced below Pinwheel |
18769 |
31 Jul 2021 @ 0845 |
--- |
MAB |
dark green above Pinwheel vent - more green growing on edges of channel farther down - center channels still white with tiny flecks of green |
18667 |
25 Jul 2021 @ 1819 |
--- |
cb |
Edges of the pool are not green, they are muddy gray and pool is low by 4". Runoff channels are basically still white with more green algae on the sides than last observed. |
18472 |
14 Jul 2021 @ 1720 |
--- |
MAB |
Channel still white with faint green developing in some spots along edges and past the boardwalk - very green above Pinwheel's vent area - nothing upstream has pushed out hot water |
17861 |
16 Jun 2021 @ 0850 |
--- |
novakg |
Pinwheel runoff continues to be scoured white. |
17839 |
15 Jun 2021 @ 0840 |
--- |
novakg |
Laurie reports that Pinwheel's runoff channel has been scoured of the green stuff and is now white. |
17543 |
07 Jun 2021 @ 0903 |
--- |
MAB |
channel still green above and below Pinwheel - but there are some whitish spots farther down |
14544 |
05 Jun 2020 @ 0903 |
--- |
bbev |
Tall, billowing, steam column coming from Pinwheel area. Normally green runoff channel coming from that area, now a brilliant white. Runoff under boardwalk mostly white, having taken even some of the red out of Whirligig's channel. |
12926 |
01 Aug 2019 @ 1230 |
01 Aug 2019 @ 1530 |
cb |
copious discharge coming from the pinwheel area and above it that is starting to change the runoff channel color to a pockmarked light green. No eruption seen. |
29127 |
30 Jul 2019 @ 1110 |
--- |
research-mab |
7/30/2019 Pinwheel spotted @ 1110 {NOTE: with benefit of hindsight this won't be added as an eruption. Blooping and increased flow were seen by others but the channel below remained green. During this time the feature upstream was often confused with Pinwheel as well. mab} |
11586 |
04 Jun 2019 @ 1321 |
04 Jun 2019 @ 1517 |
novakg |
From at least 1321 until 1517 when we left, the area near Pinwheel was "blooping," for lack of a better word. These could be seen above the bern from the Constant bench and would slightly increase the runoff from that direction. |
11027 |
20 Apr 2019 @ 0930 |
--- |
MAB |
Water in runoff channel slightly murky, probably from features upstream of Pinwheel but worth mentioning. |
10722 |
04 Nov 2018 @ 0954 |
--- |
MAB |
Definite convection over the vent. Earlier this summer noticed the white below Pinwheel never grew back after the July eruption - now with the algae dark dark dark DARK green the white stripe is is very pronounced. Water entering from above is green. |
3308 |
14 Jul 2016 @ 1040 |
--- |
MAB |
Runoff continues in formerly dry 3rd (west) channel. 60C and green is not returning until downstream of Splutterpot. The increased flow may be from Sand Spring but that channel above Pinwheel's crater is still dark green. |
3017 |
08 Jun 2016 @ 1500 |
08 Jun 2016 @ 2000 |
MAB |
Pinwheel runoff brighter white, twigs wet and moved, some water in 3rd (west) runoff channel. Basin had been closed due to thermal death incident, but I will ask staff if they had seen anything out of Pinwheel since the 5th when things are calmer. |
2484 |
05 Oct 2015 @ 1055 |
--- |
MAB |
Steamy morning. Upon arrival 1030 water was flowing in the 3rd (west) runoff channel and the flat sinter spot was half-wet and debris moved to the east. Just before 1055 I noticed increased steam and runoff, and saw the flat sinter spot was submerged. A push from Pinwheel, or something else upstream? Too steamy to tell, but it's worth watching. Though I saw that flow increase, green is growing back in the 2 easterly channels. |
2399 |
21 Sep 2015 @ 0940 |
--- |
MAB |
Flat sinter area in westerly runoff channel, my visual 'marker' (not the formerly green and not with water currently flowing) was wet upon arrival, and dried off and remained dry the rest of the day. Convection seen in the pool later in the warmth of day at 1352 and 1625 (the times I looked, not implying that's the only time it had convection) |
2376 |
18 Sep 2015 @ 1151 |
--- |
MAB |
Slight convection in the vent observed all day when visiting this spot. I left to go watch Graceful and get the end. Upon my return the runoff was cloudy, and a previously dry area in the most westerly runoff channel (not the ones usually green) was wet. It was dry again by afternoon. Unknown if this came from a Pinwheel push or from that thing upstream around the corner. I include the time here in case we see it on YVO, but (!) Whirligig started right after that, so will probably be indistinguishable. |
2355 |
15 Sep 2015 @ 0948 |
15 Sep 2015 @ 1748 |
MAB |
Lots of water coming through the pool from above on a rainy steamy day. Slight convection in the vent and a few blips were observed in late afternoon 1548,1735. I will observe the spouter around the corner and watch for lulls to see how the Pinwheel pool looks then. No sign of green regrowth in the runoff channel. |
29452 |
04 Aug 2012 @ 1200 |
--- |
research-mab |
8/4/2012 - no time noted - Pinwheel is very cloudy and grey-green color and is bubbling from two spots and is making all the runoff cloudy. It is normaly [sic] clear. |
30282 |
24 Aug 1993 @ 1200 |
--- |
research-mab |
8/24/1993 - no times noted - [NOT PINWHEEL SPECIFIC] - Porcelain Basin shows dark runoff & lowered water levels |
30338 |
07 Jun 1992 @ 1200 |
--- |
research-mab |
June 7, 1992 - no time noted -Bright green runoff from Pinwheel area |
30677 |
14 Sep 1990 @ 1200 |
--- |
research-mab |
9/14 no time noted - disturbance continues. - Pinwheel runoff’s Cyanidium white again. |
30614 |
27 Apr 1990 @ 1200 |
--- |
research-mab |
4/27/1990 - no time noted - Runoff channel from Pinwheel is lime green. |
30697 |
28 Jun 1989 @ 1200 |
--- |
research-mab |
6/28/1989 - no time noted - Pinwheel’s outflow channel has changed from Emerald green to white and Congress Pool has two vent like holes in bank near waterline and a third appears to be forming. Still clear water in Congress. |
30958 |
21 Aug 1985 @ 1200 |
--- |
research-mab |
8/21/1985 - no time noted - Pinwheel Geyser Pool = 151º Dormant, having runoff no stir in the pool in the slightest way. |
7627 |
11 Feb 1984 @ 1800 |
--- |
research-mab |
02/11/1984
Pinwheel Geyser - Slowly being filled with sediment, slightly turbid, dark green algae present. |
31155 |
29 Aug 1983 @ 1200 |
--- |
research-mab |
8/29/1983 temperatures - no time noted - Pinwheel Geyser – 192º temp taken in center, clear water w/grn algae along fringes. Bloodworms floating in from above runoff to become cooked!! |
31207 |
15 Jan 1982 @ 1200 |
--- |
research-mab |
January 15th, 1982 - no time noted - Pinwheel Geyser 152º (crossed out with ? Mark) calm, green algae lined. |
31602 |
11 Dec 1981 @ 1200 |
--- |
research-mab |
Dec 11 1981 - no time noted - Pinwheel 102º light green algae lined, calm |
31553 |
12 Sep 1981 @ 1200 |
--- |
research-mab |
Sept 12 1981 - no time noted - Pinwheel 109°- bloodworms in center where temp taken, water level w/surr grnd |
31511 |
13 Aug 1981 @ 1200 |
--- |
research-mab |
Aug 13 1981 - no time noted - Pinwheel’s water is down about a foot so that no single pool exists. Water is in 4 separate vent areas & 1 vent continually bubbles 6” |
31502 |
10 Aug 1981 @ 1200 |
--- |
research-mab |
Monday Aug 10, 1981 - no time noted - Pinwheel bubbling up with low water level. |
31440 |
02 Aug 1981 @ 1200 |
--- |
research-mab |
Sunday August 2 1981 The Basin Wide Disturbance has occurred! - no time noted - Pinwheel – 120º very turbid dark grey-brown |
31464 |
02 Aug 1981 @ 1200 |
--- |
research-mab |
Sunday August 2 1981 - no time noted - Pinwheel Geyser 130ºF |
4621 |
29 Sep 1980 @ 1200 |
--- |
research-mab |
9/29/1980 - no time - Pinwheel Geyser was likewise drained and considerably hotter- water level was down 16 inches temp 195 -There was absolutely no water flowing into or out of Pinwheel |
31809 |
27 Sep 1980 @ 1200 |
--- |
research-mab |
Saturday September 27 1980 - no time noted - Pinwheel – filled back up again, gray water 101ºF |
31788 |
22 Sep 1980 @ 1100 |
--- |
research-mab |
9-22-1980 - inferred time - Water flow leaving Porcelain Basin was down sharply today. Perhaps 1/5 of normal flow. Part of the decrease was due to Blue Geyser draining during the morning. Soon after...Blue Quit, Pinwheel drained. Green algae is beginning to make a reappearance in Constant’s runoff. All other algae remains mud coated. |
4613 |
22 Sep 1980 @ 1030 |
--- |
research-mab |
9/22/1980 Pinwheel Dark gray, turbid, and gently bubbling from close to a dozen locations, small amount of water flowing in and out at 10:30. By 11:10 Pinwheel had drained serving as a receptacle for water flowing from northern portions of Porcelain Basin. |
31746 |
09 Sep 1980 @ 1201 |
--- |
research-mab |
Tuesday Sept 9 1980 - no time noted - Pinwheel Geyser - green bottom, slightly murky 110°F, water entering 144°F so Pinwheel is cooling the water entering it. |
31623 |
08 Jun 1980 @ 1200 |
--- |
research-mab |
June 8 1980 - no time noted - Pinwheel Geyser – 120ºF, nice green algae, clear water, water flowing into pinwheel -116ºF |
31914 |
28 Aug 1979 @ 1200 |
--- |
research-mab |
Aug 28 1979 - no time noted - Pinwheel splashing around, not as turbid as when this activity was noted earlier in the summer.
There is not as much water flowing down the channels in Porcelain Basin. |
31907 |
24 Aug 1979 @ 1200 |
--- |
research-mab |
August 24 1979 Pinwheel was splashing to 2 feet at 12:00 today. Muddy Grey water. |
31831 |
18 Jun 1979 @ 1200 |
--- |
research-mab |
June 18 1979 - no time noted - Pinwheel is cleared up and quiet today but does have a new sediment layer coating the bottom |
5023 |
17 Jun 1979 @ 1400 |
--- |
research-mab |
06/17/1979 By 1400 this afternoon Pinwheel had cleared up considerably and was no longer boiling up. Blue Geyser back in operation by 1345 |
5022 |
17 Jun 1979 @ 1015 |
--- |
research-mab |
06/17/1979 Pinwheel may be reactivating. The pool is very muddy, with increased overflow and periodic boiling several inches high. Must keep an eye on Pinwheel. Periodically splashing up to 2’ |
5120 |
06 Sep 1977 @ 1200 |
06 Sep 1977 @ 1730 |
research-mab |
09/06/1977 The drain-fill cycle of Pinwheel is related to the drain-fill-erupt pattern of Blue Geyser. At ~1200 Blue was erupting & Pinwheel was full. At 1730 Blue was drained & Pinwheel was losing water. |
5127 |
29 Aug 1977 @ 1800 |
--- |
research-mab |
08/29/1977 Pinwheel Geyser is drained down about a foot or so that there is no runoff and only a small amount of incoming water. |
5118 |
21 Aug 1977 @ 1800 |
--- |
research-mab |
08/21/1977 After the influx of water comes the lack of water in Sand Spring is no longer overflowing so less water is draining into Pinwheel. More water flows out of Pinwheel than is flowing in. |
5558 |
21 Jul 1976 @ 1520 |
21 Jul 1976 @ 1600 |
research-mab |
07/21/1976 Pinwheel shows increased activity this p.m. Large splashes witnessed from 3:20 to nearly 4:00. |
5561 |
14 Jul 1976 @ 1800 |
--- |
research-mab |
07/14/1976 Pinwheel geyser was bubbling to a height of 2’. It seems to be loosing its algal bed. Also rocks have been thrown in this area. |
5541 |
06 Jul 1976 @ 1800 |
--- |
research-mab |
07/06/1976 Pequito has been acting in its usual pattern while Pinwheel has been ejecting more silt & rather vigorous bubbling. |
5539 |
30 Jun 1976 @ 0845 |
--- |
research-mab |
06/30/1976 {Pequito erupting....} Eroded channels near boardwalk were dry, but Pinwheel was splashing away and emitting loud popping sounds. |
5532 |
25 Jun 1976 @ 1230 |
--- |
research-mab |
06/25/1976 Pinwheel -- renewed activity. Small eruptions were coming from main vent during Little Whirligig 1230 (Time approximately 1230) |
5701 |
07 Sep 1975 @ 1800 |
--- |
research-mab |
09/07/1975
Pinwheel continues to fluctuate, sometimes overflowing other times not. |
5692 |
31 Aug 1975 @ 1800 |
--- |
research-mab |
08/31/1975 Runoff channel from Pinwheel full of water at 0845 but dry about noon. |
5663 |
29 Aug 1975 @ 1800 |
--- |
research-mab |
08/29/1975 Noticeable decrease in amount of runoff from Porcelain Basin.
Channel from Pinwheel Geyser almost dry. |
5766 |
16 Aug 1974 @ 0830 |
--- |
research-mab |
08/16/1974 Pinwheel 0830 bubbling w/ runoff from Blue. |
5759 |
15 Aug 1974 @ 1800 |
--- |
research-mab |
08/15/1974 Pinwheel erupting to 6’ in pm |
6100 |
05 Sep 1973 @ 1845 |
--- |
research-mab |
09/05/1973 P.B. at 6:45 - runoff extending from Sieve Lake into Pinwheel G |
6095 |
04 Sep 1973 @ 1000 |
--- |
research-mab |
09/04/1973 Blue Geyser still sending off much runoff which increases runoff into/out of Pinwheel (which shows more runoff into than yesterday-) also a little more drainage from the N ← not from Sand Spring. |
6061 |
29 Aug 1973 @ 1800 |
--- |
research-mab |
08/29/1973 Pinwheel→ no runoff into it. |
6103 |
28 Aug 1973 @ 1800 |
--- |
research-mab |
08/28/1973 Water once again draining into Pinwheel G. & quite a bit (though not normal) of water in its runoff channels. |
6085 |
26 Aug 1973 @ 1800 |
--- |
research-mab |
08/26/1973 – still no runoff into Pinwheel |
6083 |
25 Aug 1973 @ 1800 |
--- |
research-mab |
08/25/1973 No water draining into Pinwheel-→ still it is not erupting. Sign Change !! |
6078 |
22 Aug 1973 @ 1800 |
--- |
research-mab |
08/22/1973 Sand Spring, north of Pinwheel Geyser ceased runoff water (probably) this afternoon, its runoff channel is dry red-iron; this change has markedly decreased the runoff water into Pinwheel. |
6062 |
19 Aug 1973 @ 1800 |
--- |
research-mab |
08/19/1973 Pinwheel bubbling somewhat more violently than yesterday. |
6447 |
02 Sep 1972 @ 1800 |
--- |
research-mab |
09/02/1972
Pinwheel Geyser – is now full with most bubbling action ended
-a very little is continuing from a couple of the cracks in the bottom. Runoff through Pinwheel from Sand Spring & the small springs to the NE is almost completely back up to normal. |
6442 |
31 Aug 1972 @ 1800 |
--- |
research-mab |
08/31/1972
Water flowing back into Pinwheel Geyser |
6441 |
26 Aug 1972 @ 1800 |
--- |
research-mab |
08/26/1972
Water level down to lowest observed level so far in the Whale’s Mouth, while the pool of Pinwheel Geyser is almost refilled. (Bubbling action is present in 17 points in the base of the pool.) |
6421 |
23 Aug 1972 @ 1800 |
--- |
research-mab |
08/23/1972
Water is re entering Pinwheel Geyser again from springs to the N & NE but not from Sand Spring. |
6439 |
23 Aug 1972 @ 1800 |
--- |
research-mab |
08/23/1972
Water is re entering Pinwheel Geyser again from springs to the N & NE but not from Sand Spring. |
6419 |
20 Aug 1972 @ 1630 |
--- |
research-mab |
08/20/1972
Pinwheel empty at 4:30 |
6427 |
19 Aug 1972 @ 0800 |
--- |
research-mab |
08/19/1972
Water level in Porcelain Basin is continuing to drop-off
Pinwheel Geyser’s water level was down 12-13 inches at 8:00 as there was no water coming into it from Sand Spring. |
6438 |
18 Aug 1972 @ 1800 |
--- |
research-mab |
08/18/1972
Pinwheel at lowest level ever observed water level down 10-15” with absolutely no water running either in or out! {no specific time} |
6437 |
17 Aug 1972 @ 0940 |
--- |
research-mab |
08/17/1972
By 9:40 Pinwheel geyser full w/runoff. |
6436 |
17 Aug 1972 @ 0830 |
17 Aug 1972 @ 0930 |
research-mab |
08/17/1972
Pinwheel G with absolutely no runoff 8:30-9:30, however the small frying pans N of the enclosure at Pinwheel contain more water than has been observed there for the last three days. Temp=78.5º (when drained) |
6414 |
16 Aug 1972 @ 1530 |
16 Aug 1972 @ 1640 |
research-mab |
08/16/1972
Pinwheel – empty at 3:30 (no run off) – at least 4:40 |
6479 |
15 Aug 1972 @ 0800 |
15 Aug 1972 @ 1545 |
research-mab |
08/15/1972 Pinwheel G – full with normal discharge 8:00 AM {Down 1 inch 3:45pm) |
6390 |
13 Aug 1972 @ 1000 |
--- |
research-mab |
08/13/1972 By 10:00 Pinwheel was again full with almost normal amount of water flowing into and out of the pool. |
6380 |
11 Aug 1972 @ 1730 |
--- |
research-mab |
08/11/1972
Pinwheel Geyser had completely drained by 5:30 pm. |
6471 |
02 Oct 1971 @ 1800 |
--- |
research-mab |
10/02/1971 Pinwheel Geyser – water clear but only around 60% normal runoff. |
6515 |
26 Sep 1971 @ 1800 |
--- |
research-mab |
09/26/1971
The water levels and thermal activities are continuing to fluctuate abnormally. Pinwheel Geyser has drained again with the water level this morning 2 inches below the overflow point. In addition there is not as much water flowing into it as yesterday.
By afternoon Pinwheel was overflowing again since there is more discharge from the Sand Geyser area. |