Last Known Eruption
39y 335d 15h 57m ago

Latest Eruptions

Eruption DurationInterval
29 Aug 1984 @ 21013y 3d 3h 2m
27 Aug 1981 @ 1758:441m 33s 8m 45s
27 Aug 1981 @ 1749:591m 21s 9m 22s
27 Aug 1981 @ 1740:371m 7s 8m 55s
27 Aug 1981 @ 1731:421m 16s 9m 46s
27 Aug 1981 @ 1721:561m 13s 9m 16s
27 Aug 1981 @ 1712:401m 8s 11m 26s
27 Aug 1981 @ 1701:141m 39s 13m 34s
27 Aug 1981 @ 1647:401m 37s 4d 21h 26m 2s
22 Aug 1981 @ 1921:3844s 11m
22 Aug 1981 @ 191038s 1m
22 Aug 1981 @ 1908:281m 12s 10m 9s
22 Aug 1981 @ 1858:191m 39s 9m 21s
22 Aug 1981 @ 1848:581m 30s 4m 28s
22 Aug 1981 @ 1844:302m 59s 14m 21s
22 Aug 1981 @ 1830:0950s 2m 5s
22 Aug 1981 @ 1828:041m 10s 14m 47s
22 Aug 1981 @ 1813:172m 10m 53s
22 Aug 1981 @ 1802:242m 11m
22 Aug 1981 @ 175115d 2h 25m
07 Aug 1981 @ 1526:001m 43s 3m 32s
07 Aug 1981 @ 1522:288m 13s
07 Aug 1981 @ 1514:152m 34s 9m 29s
07 Aug 1981 @ 1504:462m 40s 4m 1s
07 Aug 1981 @ 1500:45 min13m 52s
07 Aug 1981 @ 1446:533m 36s 1m 12s
07 Aug 1981 @ 1445:415m 4s 8m 6s
07 Aug 1981 @ 1437:352m 22s 6d 22h 14m 30s
31 Jul 1981 @ 1623:057m 53s
31 Jul 1981 @ 1615:128m 44s
31 Jul 1981 @ 1606:285m 56s
31 Jul 1981 @ 1600:327m 44s
31 Jul 1981 @ 1552:486m 33s
31 Jul 1981 @ 1546:156m 58s
31 Jul 1981 @ 1539:175m 55s
31 Jul 1981 @ 1533:22 min6m 36s
31 Jul 1981 @ 1526:467m 25s
31 Jul 1981 @ 1519:217m 5s
31 Jul 1981 @ 1512:167m 32s
31 Jul 1981 @ 1504:448m 1s
31 Jul 1981 @ 1456:436m 8s
31 Jul 1981 @ 1450:3521h 55m 46s
30 Jul 1981 @ 1654:49 maj3m 26s 6m 29s
30 Jul 1981 @ 1648:2059s 7m 44s
30 Jul 1981 @ 1640:36 maj2m 31s 6m
30 Jul 1981 @ 1634 maj1m 19s 8m
30 Jul 1981 @ 1625:20 maj2m 27s 7m 22s
30 Jul 1981 @ 1617:58 maj2m 54s 7m 34s
30 Jul 1981 @ 1610:24 maj2m 2d 3h 37m 34s
28 Jul 1981 @ 1232:504m 15s 7m 40s
28 Jul 1981 @ 1225:104m 30s 7m 45s
28 Jul 1981 @ 1217:254m 15s 7m 50s
28 Jul 1981 @ 1209:354m 5s 7m 0s
28 Jul 1981 @ 1202:353m 28s 7m 35s
28 Jul 1981 @ 1155:003m 35s 9m 6s
28 Jul 1981 @ 1145:544m 26s 7m 14s
28 Jul 1981 @ 1138:403m 27s 9m
28 Jul 1981 @ 11295m 20s 6d 18h 32m
21 Jul 1981 @ 1656:273m 47s 9m 2s
21 Jul 1981 @ 1647:254m 55s 8m 36s
21 Jul 1981 @ 1638:494m 13s 1m 29s
21 Jul 1981 @ 1637:20 maj4m 13s 4m 55s
21 Jul 1981 @ 1632:251m 40s 8m 27s
21 Jul 1981 @ 1623:58 maj3m 52s 7m 23s
21 Jul 1981 @ 1616:35 min2m 44s 9m 15s
21 Jul 1981 @ 1607:204m 4s 15m 50s
21 Jul 1981 @ 1551:302m 58s 3m 2s
21 Jul 1981 @ 1548:283m 28s 6m 4s
21 Jul 1981 @ 1542:243m 42s 6m 6s
21 Jul 1981 @ 1536:18 min2m 34s 7m 54s
21 Jul 1981 @ 1528:242m 58s 10m 44s
21 Jul 1981 @ 1517:403m 40s 5m 31s
21 Jul 1981 @ 1512:092m 11s 7m 36s
21 Jul 1981 @ 1504:333m 1s 1m 59s
21 Jul 1981 @ 1502:34 min35s 6m 12s
21 Jul 1981 @ 1456:222m 52s 7m 3s
21 Jul 1981 @ 1449:193m 14s 7m 35s
21 Jul 1981 @ 1441:443m 6s 9m 22s
21 Jul 1981 @ 1432:224m 54s 3m 24s
21 Jul 1981 @ 1428:582m 45s 7m 45s
21 Jul 1981 @ 1421:133m 36s 7m 16s
21 Jul 1981 @ 1413:573m 17s 7m 43s
21 Jul 1981 @ 1406:143m 4s 7m 36s
21 Jul 1981 @ 1358:383m 15s 9m 26s
21 Jul 1981 @ 1349:124m 9s 4m 57s
21 Jul 1981 @ 1344:151m 33s 7m 35s
21 Jul 1981 @ 1336:40 maj3m 18s 9m 47s
21 Jul 1981 @ 1326:534m 1s 4m 47s
21 Jul 1981 @ 1322:061m 47s 9m 14s
21 Jul 1981 @ 1312:52 maj5m 6s 2m 43s
21 Jul 1981 @ 1310:091m 11s 9m 15s
21 Jul 1981 @ 1300:545m 4s 2m 27s
21 Jul 1981 @ 1258:271m 45s 8m 37s
21 Jul 1981 @ 1249:50 maj4m 38s 3m 30s
21 Jul 1981 @ 1246:202m 12s 7m 27s
21 Jul 1981 @ 1238:533m 31s 6m 11s
21 Jul 1981 @ 1232:423m 1s 8m 32s
21 Jul 1981 @ 1224:104m 53s
21 Jul 1981 @ 1219:172m 6s 8m 21s
21 Jul 1981 @ 1210:56 maj3m 59s 5m

Interval Statistics

Interval Count100
Min1m
Max3y 3d 3h 2m
Mean11d 8h 29m
Median7m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
35405 21 Jun 2024 @ 1051 --- nails Slightly grey green and calm. Occasional lazy bubbles in south end and middle.
35072 10 Jun 2024 @ 0932 --- SantaFe108 Small, infrequent bubbles on the Hurricane Vent side.
34232 19 Apr 2024 @ 0911 --- MAB clear with the tiniest of bubbles floating on the east end
33958 30 Jan 2024 @ 1400 --- JR Bubbly, a bit lower water level?
29049 22 Oct 2023 @ 1308 --- SantaFe108 Bubbling on NW end of the pool and the E main vent. Colloidal Pool boiling on NW end.
28914 20 Oct 2023 @ 1038 --- MAB more bubbles on the nw end - and a few mid-pool I didn't see Tuesday - most bubble boils from main E vent - Sunday is putting more water into Scummy than Colloidal is
28848 17 Oct 2023 @ 1604 --- MAB murky seafoam green - light boil on west end - another 2/3 towards east vent - most action near east end - COLLOIDAL POOL all lobes same color an ugly taupe - low and barely flowing past Sunday & even less flowing under the bw to Scummy
23254 18 Aug 2022 @ 1843 --- MAB Sunday and Colloidal both appear over full - channel into Scummy has water
22525 12 Jul 2022 @ 1135 --- cb clear and blue again
22285 02 Jul 2022 @ 1050 02 Jul 2022 @ 1249 cb Cloudy blue in color with 2 small boils. not flowing into Scummy pool
22177 28 Jun 2022 @ 1356 --- cb blueish in color with a small boil in a gew ateas of the pool
21446 23 May 2022 @ 1215 --- MAB a few random bubbles
19998 16 Oct 2021 @ 1202 --- cb Sunday and Colloidal spring's pools have cleared & are no longer murky/muddy pools.
19920 06 Oct 2021 @ 1413 --- cb Pool is cloudy light brown color and more blue green in the center with 2 boiling points on the northern side of the pool and the east end. Colloidal Pool was mostly blue green and fairly clear for the past few weeks. Today it looks like thick chocolate milk. it has a few boils on the north end of the pool closest to Constant.
29884 20 Jul 2000 @ 1200 --- research-mab 7/20 - no time noted - "weak Disturbance" Scummy Pool, Colloidal Pool and Sunday Geyser are all “muddy”.
30003 09 Sep 1997 @ 1200 --- research-mab 9/9/1997 - no time noted - Colloidal Pool and Sunday geyser are more transparent and blue than their previous opaque opalescence. Less silica, more sulfur ? {? is in original mab}
30029 19 Jun 1996 @ 1200 --- research-mab 6/19/1996 - no time noted - Sunday geyser has become clear from its normal cloudy blue color.
30286 25 Aug 1993 @ 1200 --- research-mab 8/25/1993 - no time noted - Sunday Geyser cleared up from milky to clear & bottom topography visible.
30562 22 Jul 1991 @ 1200 --- research-mab 7/22/1991 - no time noted - Sunday Geyser level even lower today.
30559 20 Jul 1991 @ 1200 --- research-mab 7/20/1991 - no time noted - Sunday Geyser water level down 6”-8”
30509 16 May 1991 @ 1200 --- research-mab 5/16/1991 - no time noted - Sunday Geyser – greenish brown with a bubbly foam over ½ of surface.
30674 06 Sep 1990 @ 1200 --- research-mab 9-6 - no time noted - disturbance continues Many beautiful delicate bubbles dancing on the surface of Sunday Geyser.
30663 03 Sep 1990 @ 1200 --- research-mab 9/3/90 - no time noted -Colloidal Pool, Sunday geyser and the pool between Sunday Geyser and the Boardwalk are silty and over flowing. More new frying pan fumeroles on the opposite side of the board walk. The algae runoff channels near the board walk crossing Porcelain are white and silty. I wonder if it is the silt or a surge of hotter water that kills the algae. It smells like low tide.
30843 16 Aug 1988 @ 1200 --- research-mab 8/16/1988 - no time noted - Sunday Geyser now has grey black bubbles on the surface of the pool near its vent which appear to persist for a long time.
30807 03 Jul 1988 @ 1200 --- research-mab 7/3/1988 - no time noted - Sunday Geyser has a lot of black near the vent.
28989 23 Aug 1987 @ 1200 --- research-mab 8-23-87- no time noted - Sunday Geyser is putting out a lot of black granular sediment.
33466 26 Apr 1987 @ 1200 --- research-mab 04/26/1987 – no time noted - Sunday Geyser– Calm boil over northwestern edge of crater, maybe 1 foot high. No sign of a “major” eruption.
33446 09 Oct 1986 @ 1200 --- research-mab 10/09/1986 – no time noted - Sunday Geyser – muddy and boiling constantly.
33431 06 Oct 1986 @ 1200 --- research-mab October 6, 1986 - no time noted - *SUNDAY GEYSER has turned into a gray constant boiler...muddy.
33679 21 Aug 1985 @ 1200 --- research-mab 8/21/1985 - no time noted - Basin Geyser = 203º Water erupting ½ to 1 foot in a rock crevice on the middle of the side nearest the boardwalk – on the side of the pool Sunday Geyser Pool = 183º = bubbling (low) in the center of the pool Colloidal Pool = 178º- pool looked all calm, no main bubbling or boiling in the pool.
30916 08 May 1985 @ 1200 --- research-mab Wednesday May 8 1985 - no time noted - Sunday G. has mild bubbling toward its northern end; both it and Colloidal Pool are opalescent blue and fairly calm.
31029 02 Sep 1984 @ 1200 --- research-mab 9/2/1984 - no time noted - Much activity on Porcelain compared to normal. The run off on Sunday Geyser has increased dramatically! Temperature on Sunday geyser is 180ºF up 6ºF from what it was all summer!
7620 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Sunday Geyser – Dormant, opal blue mod turbid, gasy at NW end 120gpm 85º
31158 29 Aug 1983 @ 1200 --- research-mab 8/29/1983 temperatures - no time noted - Sunday Geyser opalescent, 1-3” bubbling in NW end of pool, inactive as geyser, 193ºF
31057 30 May 1983 @ 1800 --- research-mab May 30 1983 - no time noted - Sunday eruption 2’ (3) from NE edge of pool
31087 21 May 1983 @ 1200 --- research-mab May 21 1983 – no time noted ~morning {Observations from ~0900 to 1154 in Porcelain Basin, and 1530 to 1745 in the Back Basin.} Sunday – Doming and splashing up to 3 feet. It looks a little stronger than last night. The water is opaque light grey, and there is little runoff.
31079 20 May 1983 @ 1200 --- research-mab May 20 1983 - no time noted - Disturbance!... Sunday- Boiling up 2 feet approximately. The water is murky grey.
31048 19 Feb 1983 @ 1200 --- research-mab 2/19/1983 - no time noted - Sunday Geyser 194º “boiling” to 6” slightly turbid light blue
31368 13 Aug 1982 @ 1200 --- research-mab 8/13/1982 - no time noted - Sunday has very milky white H20
31347 17 Jul 1982 @ 1201 --- research-mab Some Temps from Porcelain Basinland taken on July 17th - no time noted - Sunday 192º light blue milky slightly turbid H20 splashing to 6’.
31331 17 Jul 1982 @ 1200 --- research-mab July 17, 1982 - no time noted - Sunday periodic to 10 feet
31322 09 Jul 1982 @ 1045 --- research-mab July 9th 1982 - inferred time TM in basin 1045 = Sunday Geyser - Constant bursting eruptions from 1 to 6 feet= bursting sometimes not quite as high as yesterday. Sometimes today over 6 feet to boardwalks level or higher – saw once it going to about 4 to 5 feet over the boardwalk.
4665 08 Jul 1982 @ 1800 --- research-mab 7/8/1982 Sunday Geyser – Occasionally bursts to height of boardwalk Tomas
31318 08 Jul 1982 @ 1500 --- research-mab July 8th – approx afternoon time ~TM in Porcelain 1400-1845 - Sunday Geyser Constant very heavy surging- water from 2 feet to 6 feet, sometimes higher= once saw it go to 1 or 2 feet above the boardwalk.
31276 06 Jul 1982 @ 1924 --- research-mab 7/6/1982 Observations by DScheel + GSchrayer - Arrived 1924 - Sunday greyish-splashing; murky runoff from Blue; Graceful eruptions visible form Visitors Center
31280 06 Jul 1982 @ 1600 --- research-mab July 6 - inferred approx time - The CHANGE in features occurred between 1230 and 1345 – for both basins.Colloidal – turbid and boiling, light brown color - Sunday Geyser – grey brown - ↑activity, ↑overflow
31285 06 Jul 1982 @ 1520 --- research-mab July 6 - approx time - The CHANGE in features occurred between 1230 and 1345 – for both basins - Temperatures taken at 1505-1600 :- Sunday Geyser – actively spouting to 1-2’, main pool 200º, 2nd pool 190º
31257 20 Feb 1982 @ 1200 --- research-mab February 20 1982 - no time noted - Sunday Geyser 196º pool temp. Still a beautiful blue but not so much debris is being brought up.
31201 15 Jan 1982 @ 1200 --- research-mab January 15th, 1982 - no time noted -Sunday Geyser vent splashing 3’ but only from 1 vent instead of 3; 200º. Pool in Sunday’s runoff is 192º bubbling vigorously in center b ringing up gravel & debris surrounded by beautiful bright blue slightly turbid H20. Very pretty!
31588 11 Dec 1981 @ 1200 --- research-mab Dec 11 1981 - no time noted - Sunday Geyser 184º vigorous boil to 1 ½ ‘ no evidence of eruption. The 2nd pool from the vent is vigorously boiling to 8”. The boil is bringing up gravel & debris making it look similar to the larger circular pool in the Muddy Sneaker Complex this summer; light blue with a brown center. I don’t remember anything being here this summer except a wide run off channel. It now obviously has its own vents though. Pool temp. is 196º
31540 31 Aug 1981 @ 1200 --- research-mab Monday Aug 31 1981 - no time noted - Sunday 201°
4653 27 Aug 1981 @ 1600 --- research-mab 8/27/1981 (Undated in log – placed on 27th based on log order) Lognote: Sunday Geyser is erupting at maximum 15 feet, but most eruptions are in the 5-10 foot ranges. The major activity is out of the left vent as seen from Africa, but there are quite a few comparable bursts out of the right vent. The action from the right vent increases as the left vent wanes. Activity in the left vent continues through the quiet period, so I’ve stopped using that as start of preplay. I am still using the start of 5 foot play from the left vent as the start of majors. Grover S
4863 26 Aug 1981 @ 1800 --- research-mab 8/26/81 The museum crew left today. They did an absolutely fantastic job. Gave them a final intimate tour of Porcelain Basin. Everything erupted for them (Sunday, Fireball, Arsenic, Basin, Constant, Big Whirligig, Splutter Pot, Blue and Graceful)
4650 22 Aug 1981 @ 1930 --- research-mab 8/22/1981 Sunday Geyser is resuming its behavior of Aug 7. The left vent as seen from Africa is occasionally having bursts of 20 feet or so, but most are 12 feet. Activity is continuous through quiet period. The minor activity is splashing 2 feet with occasional 3 ft bursts all from the right vents. I record start of preplay as when action starts in the left vent. Start of major play is when I saw bursts of more than 5 ft or so out of the left vents. Some eruptions are split in two by a quiet period that looks similar to preplay. The second is larger than the first of the 2.
4651 22 Aug 1981 @ 1835 --- research-mab 8/22/1981 Sunday Some bursts from right vent as seen from Africa geyser are as large as the left vent bursts. These come as activity in left vent subsides. Sunday’s majors are synchronous with Africa crater fills. Africa is filling to within 3 inches of crater rim. The second eruption of those separated by a 2m interval did not have the accompanying Africa of other majors. Grover Schrayer III
4642 14 Aug 1981 @ 1200 --- research-mab 8/14/1981 Sunday Geyser - no times - Sunday is constantly active with irreg. increases and decreases in eruption. The eruptions at their heights are smaller than last week. Times of major eruptions are rather impossible to determine being so indistinct. I saw no water in Africa geyser crater. Arsenic Geyser is in perpetual spluttering as is Moxie and 2 other small spouters. Fireball is somewhat weak. Grover Schrayer III
31510 13 Aug 1981 @ 1200 --- research-mab Aug 13 1981 - no time noted - Arsenic and Sunday geyser were also perpetually playing.
4658 07 Aug 1981 @ 1800 --- research-mab 8/7/1981 Today I saw no water in Africa’s crater. If it is still filling in concert with Sunday’s majors it certainly isn’t visible from the boardwalk. Sunday isn’t as regular as July 30th. Also, some of the eruptions come in 2 parts separated by a lull in major activity. After the pause the eruption comes back, usually stronger. The eruptions are in the 15-20 foot range. Grover Schrayer III
4639 30 Jul 1981 @ 1900 --- research-mab 7/30/1981: Sunday doesn’t drain as it has in weeks past. The eruption now takes place out of numerous vents apparently along a fissure. As seen from Africa, the left vent erupts the highest (closest to trail), but the former major vent still has bursts to equal it. Boiling and small eruptions are continuous through the quiet period. Africa is filling higher in the crater again. It still fills in concert with Sunday preplay. Africa is filling to 2 inches from the rim. The strongest part of Sunday’s major seems to come with start of drain of Africa. After major activity subsides in all vents, the old major vent has some six foot bursts, but soon quiets to 2-3 feet doming. Report and observations by Grover Schrayer III
4638 27 Jul 1981 @ 1900 --- research-mab 7/27/1981 *Sundays eruptions are weaker than last week. The former minor vent is starting the main action, but all the {vents? Missing word} are involved in the eruption. Noticed small frying pan type bubblers in Sunday’s runoff channel. Grover
4636 26 Jul 1981 @ 1900 --- research-mab 7/26/1981 Sunday Geyser eruptions seem weaker today
31429 24 Jul 1981 @ 1900 --- research-mab July 24, 1981 - no time noted - Hutchinson here this evening. We dropped a plumb line down Echinus- 28 ft 7inches from rim to bottom of vent and Sunday Geyser – 12 ½ feet to bottom of vent.
4635 13 Jul 1981 @ 1900 --- research-mab 7/13/1981: Sunday Geyser is still increasing in height. It is having 3 types of eruptions; majors, short majors, and majors coming from left vent as seen from Africa. For the first several minutes after a major eruption, there is no activity in the craters, but activity steadily increases to a major once it has started. One one eruption today, the left vent took over major play after several seconds of play from both vents. The activity is about as high from that vent as the other when it is active. The water is ejected in 3 jets, in a fan shape. Grover Schrayer III
31427 10 Jul 1981 @ 1200 --- research-mab Friday July 10 1981 - no time noted - brought down 4 barricades from Mammoth this morning & closed off trail with warning signs by Sunday. The signs read “Scalding Water – Do Not Cross while erupting” And “Extreme Caution – Do not Cross While Sunday Geyser is in eruption”. Sunday Geyser, by the way, is splashing all the way into Hurricane Vent!
31425 09 Jul 1981 @ 1200 --- research-mab Thurs July 9 - no time noted - Sunday is splashing 4’ beyond Hurricane Vent's name sign. And Hurricane Vent sure is down in level (about 1 foot) compared to 3 wks ago during our training.
31423 05 Jul 1981 @ 1200 --- research-mab Sunday July 5 1981 - no time noted - Sunday’s eruptions continue to gain strength. Each has some 4-45 foot bursts. Between majors the activity is mostly heavy boils with occasional periods of 3 ft eruptions. The quiet period is sometimes punctuated by minor short eruptions of larger 10 ft bursts. Looking toward Africa, a vent of Sunday to the left of the main vent is erupting to 2 ft or so. The beginning of Sunday’s majors are still synchronous with Africa’s fill. However, they last well after Africa’s drain. Africa’s fill is only sometimes high enough to be seen from the walk, but each time it tries {?}, it has been synchronous with Sunday’s major start.
4633 04 Jul 1981 @ 1900 --- research-mab 7/4/1981: Sunday’s eruptions continue to gain strength. Each has some 40-45 foot bursts. Between majors the activity is mostly heavy boils with occasional periods of 3 ft eruptions. The quiet period is sometimes punctuated by minor short eruptions of larger 10 ft bursts. Looking toward Africa, a vent of Sunday to the left of the main vent is erupting to 2 ft or so. The beginning of Sunday’s majors are still synchronous with Africa’s fill. However, they last well after Africa’s drain. Africa’s fill is only sometimes high enough to be seen from the walk, but each time it tries {?}, it has been synchronous with Sunday’s major start.
33728 30 Jun 1981 @ 1200 --- research-mab 6-30-81 - no time - Norris Geyser Basin Measurements: Sunday Geyser EW 5.3 m, NS 3.1m max height 10m
4632 28 Jun 1981 @ 1900 --- research-mab 6/28/1981: Sunday is erupting over the boardwalk frequently & the water is HOT! I’ve noticed people standing next to it to have their pictures taken. We may have a problem.
4631 26 Jun 1981 @ 1900 --- research-mab 6/26/1981 Sunday bursts every 6-8 min but the intervals have 1-2’ continuous bursts
4630 24 Jun 1981 @ 1900 --- research-mab 6/24/1981 Africa and Sunday Geysers still are roughly synchronous on start times, but Sunday continues well after Africa start of drain. Saw one burst from Sunday that surely must have exceeded 35 ft. Difficult to see Africa filling, so starts of Africa’s fills after major start in Sunday could be due to poor visibility from the boardwalk. Sunday had a short eruption resembling a major at 1800:35 Grover S
4627 09 Jun 1981 @ 1200 --- research-mab 6/9/1981 - no time noted - SUNDAY Schrayer saw that at each of the first three times Sunday erupted Africa’s pool would be simultaneously full and overflowing. For the fourth eruption of Sunday that Grover caught Africa’s level only came to up to 6 inches below the rim.
4624 04 Jun 1981 @ 1800 --- research-mab 6/4/1981 Africa Geyser – dormant, Sunday Geyser active
4607 02 Jun 1981 @ 1200 --- research-mab 6/2/1981 - no time - Sunday Geyser Appears to have taken energy from Africa’s system. Eruptions of turbid gray water to 20 feet were occurring every five minutes. Considerable overflow was leaving the area.
31797 22 Sep 1980 @ 1200 --- research-mab Monday Sept 22, 1980 - no time noted - One week following the disturbance, some porcelain basin observations: - Sunday Geyser – somewhat turbid, grey, no overflow 139ºF = Colloidal Pool – still bubbling with vigor, opaque gray-white
31754 09 Sep 1980 @ 1200 --- research-mab Tuesday Sept 9 1980 - no time noted - Sunday Geyser - murky, calm, slight trickle 139°
31678 24 Jul 1980 @ 1200 --- research-mab Norris July 24, 1980 - no time noted - Sunday Geyser 150°
31658 06 Jul 1980 @ 1200 --- research-mab July 6 1980 - no time noted - Sunday Geyser has risen with the increase in rain.
5084 23 Jun 1980 @ 1800 --- research-mab 06/23/1980 Sunday Geyser dropped 6 inches
31627 08 Jun 1980 @ 1200 --- research-mab June 8 1980 - no time noted - Sunday Geyser – full of algae, calm, 127ºF
32193 09 Sep 1978 @ 1200 --- research-mab 09/09/1978 - no time noted - Sunday Geyser water 2 feet below crack 196ºF
32329 15 Sep 1977 @ 1200 --- research-mab 09/15/1977 - no time noted - The water level in Sunday Geyser has come back up but it is not boiling as it once was.
32320 04 Sep 1977 @ 1200 --- research-mab 09/04/1977 -no time noted - Sunday Geyser has drained about a foot back to its former level sans any bubbling.
5119 31 Aug 1977 @ 1800 --- research-mab 08/31/1977 Sunday Geyser’s water level has risen approximately 1 ½ feet. Hurricane Vent’s level has declined 8-10”
32298 19 Aug 1977 @ 1200 --- research-mab 08/19/1977 - no time noted - A number of changes in the Porcelain Basin this AM. Much more run-off than earlier and it is somewhat turbid. Congress is murky again instead of blue. Big Whirligig was in eruption at 0830. This is the first observed eruption in several weeks. Sunday Geyser was muddy.
32359 04 Jun 1976 @ 1200 --- research-mab June 4 1976 - no time noted - Sunday Geyser, which usually supports a pool extending NW from the vent, has water only in the vent itself.
32875 30 Sep 1973 @ 1630 --- research-mab 09/30/1973 Porcelain Basin 4:30 pm Some bubbling in Sunday & Congress.
32859 27 Sep 1973 @ 1500 --- research-mab Sept 27 1973 - Porcelain Basin 3:00 pm Sunday & Colloidal pools pretty clear
33151 15 May 1972 @ 1200 --- research-mab May 15 1972 - no time - 190F No activity- (a little bubbling) – no overflow – a little gray brown water. Some frying-pan spring activity at the entrance to the little alcove. Some red color in these springs.
32943 11 Sep 1971 @ 1800 --- research-mab 09/11/1971 - {afternoon temps 1430-1900} - Sunday 187° minor bubbling
33152 31 Jul 1971 @ 1200 --- research-mab July 31 1971 - no time - No action from geyser, no water flowing from area water 89C (192F)
33153 14 Jul 1970 @ 1200 --- research-mab July 14 1970 - no time - see picture. Aug 18 air 65F water 192F
33154 16 Jul 1969 @ 1200 --- research-mab July 16 1969 - no time - 92.8ºC; 198.5ºF, pH 3.9
33155 26 Jun 1969 @ 1200 --- research-mab 1969 – June 26- no time - a little bubbling action from the south east side. Not as much action as last year. Very little overflow 90ºF
33157 29 Jun 1967 @ 1200 --- research-mab June 29 1967 - no time - 200ºF and a pH of 5 at 110ºF.
33158 06 Jun 1967 @ 1200 --- research-mab June 6, 1967.- no time - Steady action one to two feet. Located just west down the hill from Hurricane Vent. The pool is 8 to 10 feet in diameter and the water runs to the west in a shallow stream. The water is boiling out of the east side two to three feet high.
33156 02 Jun 1967 @ 1200 --- research-mab June 2 1967 - no time - Boiling action from 1 to 3 feet as last year.
7139 23 Jul 1966 @ 1800 --- research-mab 07/23/1966 Sunday – More active than any other time this season – Some bursts 20’ {no specific times}
7105 07 Jul 1966 @ 0925 --- research-mab 07/07/1966 Sunday – Visitor reported play of 15’ burst saw no evidence around pool. ?? It did seem a little more vigorous than usual, though. 9:25a Report by Doug Warburton.
7099 05 Jul 1966 @ 1630 --- research-mab 07/05/1966 Sunday – more active than usual 4:30p
No attachments for this geyser.
Baseline does not exist.