Last Known Eruption
116d 17h 9m ago

Latest Eruptions

Eruption DurationInterval
30 Jan 2024 @ 1400 ie117d 1h 27m
05 Oct 2023 @ 133332m
05 Oct 2023 @ 1301 ie11d 2h 3m
24 Sep 2023 @ 10586d 17h 50m
17 Sep 2023 @ 170833m
17 Sep 2023 @ 1635 ie5h 20m
17 Sep 2023 @ 11154d 18h 48m
12 Sep 2023 @ 16272d 0m
10 Sep 2023 @ 16271d 5h 1m
09 Sep 2023 @ 1126 ie8d 9m
01 Sep 2023 @ 1117 min2d 17h 22m
29 Aug 2023 @ 175556m
29 Aug 2023 @ 1659 ie1h 3m
29 Aug 2023 @ 15561d 1m
28 Aug 2023 @ 1555 ie6d 41m
22 Aug 2023 @ 151434m
22 Aug 2023 @ 144030m
22 Aug 2023 @ 141034m
22 Aug 2023 @ 133659m
22 Aug 2023 @ 1237 ie6d 22h 13m
15 Aug 2023 @ 142433m
15 Aug 2023 @ 13511h 0m
15 Aug 2023 @ 125131m
15 Aug 2023 @ 1220~3m 59m
15 Aug 2023 @ 112130m
15 Aug 2023 @ 1051~2m 16h 40m
14 Aug 2023 @ 181118d 3h 58m
27 Jul 2023 @ 14136d 20h 28m
20 Jul 2023 @ 1745 ie3h 43m
20 Jul 2023 @ 14023h 38m
20 Jul 2023 @ 102414m 15d 23h 10m
04 Jul 2023 @ 111415m 11d 27m
23 Jun 2023 @ 104717m 2d 22h 4m
20 Jun 2023 @ 12431h 23m
20 Jun 2023 @ 112031m
20 Jun 2023 @ 10491h 42m
20 Jun 2023 @ 0907~5m 12m
20 Jun 2023 @ 08551h 4m
20 Jun 2023 @ 0751<5s 2d 14h 7m
17 Jun 2023 @ 1744~11m 1h 25m
17 Jun 2023 @ 1619~7m 1h 34m
17 Jun 2023 @ 144518m
17 Jun 2023 @ 14271h 15m
17 Jun 2023 @ 131225m
17 Jun 2023 @ 124724m
17 Jun 2023 @ 122336m
17 Jun 2023 @ 1147 ie22m
17 Jun 2023 @ 11251h 40m
17 Jun 2023 @ 094553m
17 Jun 2023 @ 08522d 19h 9m
14 Jun 2023 @ 134312m 3d 2h 54m
11 Jun 2023 @ 1049 ie21h 19m
10 Jun 2023 @ 1330 A1h 15m
10 Jun 2023 @ 1215 ie17h 16m
09 Jun 2023 @ 18591h 27m
09 Jun 2023 @ 17321h 32m
09 Jun 2023 @ 1600 ns2h 58m
09 Jun 2023 @ 130224m
09 Jun 2023 @ 1238 ie1h 6m
09 Jun 2023 @ 11321h 27m
09 Jun 2023 @ 1005 ie1h 26m
09 Jun 2023 @ 08393d 23h 4m
05 Jun 2023 @ 0935 ie>12m 5d 14h 50m
30 May 2023 @ 18451h 31m
30 May 2023 @ 17144h 23m
30 May 2023 @ 12511h 17m
30 May 2023 @ 11341h 25m
30 May 2023 @ 100919h 14m
29 May 2023 @ 14551h 29m
29 May 2023 @ 13261h 23m
29 May 2023 @ 120315h 26m
28 May 2023 @ 20375d 7h 29m
23 May 2023 @ 1308 ie25m
23 May 2023 @ 12431h 3m
23 May 2023 @ 114012m 1d 22h 12m
21 May 2023 @ 13281h 3m
21 May 2023 @ 12251h 27m
21 May 2023 @ 10582d 21h 12m
18 May 2023 @ 13461h 32m
18 May 2023 @ 1214 ie59m
18 May 2023 @ 11151h 12m
18 May 2023 @ 1003314d 12m
08 Jul 2022 @ 095121h 24m
07 Jul 2022 @ 122721m 1d 3h 17m
06 Jul 2022 @ 0910 ie1d 15h 11m
04 Jul 2022 @ 175919m 5h 30m
04 Jul 2022 @ 1229 ns~20m 3d 2h 15m
01 Jul 2022 @ 101420m 1d 18h 6m
29 Jun 2022 @ 16082d 1h 54m
27 Jun 2022 @ 141424m 3d 23h 36m
23 Jun 2022 @ 14385d 2h 45m
18 Jun 2022 @ 115322h 48m
17 Jun 2022 @ 1305 ie13d 17h 28m
03 Jun 2022 @ 1937 ie9h 23m
03 Jun 2022 @ 101414m 10d 19h 5m
23 May 2022 @ 150918m 30m
23 May 2022 @ 14398d 2h 49m
15 May 2022 @ 115018m 9d 1h 22m
06 May 2022 @ 10281h 20m
06 May 2022 @ 0908 ?7d 21h 59m

Interval Statistics

Interval Count100
Min12m
Max314d 12m
Mean6d 10h 7m
Median3h 18m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
34239 19 Apr 2024 @ 0930 --- MAB very light steam - no steam creeping down the channel regularly though - seen from above later in the morning slightly different coloring possibly convection above vent
28538 29 Sep 2023 @ 1100 --- DanS Big splash but didn’t start.
28354 19 Sep 2023 @ 1132 --- novakg One blurp. Not much else.
28237 12 Sep 2023 @ 1300 12 Sep 2023 @ 1600 cb no activity observed other than periods of increased weak steam.
27366 31 Jul 2023 @ 0800 31 Jul 2023 @ 1200 MAB seeing fill push and drop with some waves but no bursts at least none seen thru steam - will add some random afternoon bursts later
27224 25 Jul 2023 @ 1005 --- mhreed Push, no eruption.
25045 27 Feb 2023 @ 1348 --- MAB full - visible center blips - also FYI Primrose group full and contributing waters to Pinto flowing around the berm
24502 28 Oct 2022 @ 0836 28 Oct 2022 @ 1839 MAB has water with light steam until 1000 and after 1800 - no steam flowing down channel - very little water flowing around the corner of the berm into Pinto
24264 05 Oct 2022 @ 1441 --- cb water in the pool, no activity
23662 08 Sep 2022 @ 1135 --- MAB full but receiving no waters from Primrose group
23564 04 Sep 2022 @ 1246 --- cb water in the pool but no activity
23054 05 Aug 2022 @ 1319 --- cb water in the pool, light convection over the vent
23007 03 Aug 2022 @ 1239 --- cb water in the pool, no activity, runoff channel dry.
22852 26 Jul 2022 @ 1043 --- cb no activity observed. pool has water
22758 21 Jul 2022 @ 0815 21 Jul 2022 @ 0945 nails Slight overflow. Not steaming. Occasional lazy bubbling visible with binoculars.
22725 20 Jul 2022 @ 1030 20 Jul 2022 @ 1150 cb occational convection rings and in overflow
22697 19 Jul 2022 @ 0915 19 Jul 2022 @ 1215 nails Full with maybe light overflow. Occasional mild bubbling.
22601 15 Jul 2022 @ 1045 15 Jul 2022 @ 1150 cb occational 2" blips seen from the Constant bench
22546 13 Jul 2022 @ 1548 --- cb pool quiet, no activity
22542 13 Jul 2022 @ 1018 13 Jul 2022 @ 1254 cb 1018 small blips.@1229 still nothing more than occational blips & pool has dropped below overflow. 1254 water dropped out of sight.
22526 12 Jul 2022 @ 1132 12 Jul 2022 @ 1608 cb pool has water. @1607 there is small convection waves in the center
22396 08 Jul 2022 @ 0945 --- cb low level blips
22266 01 Jul 2022 @ 1922 --- MAB seen drained
22242 30 Jun 2022 @ 1000 30 Jun 2022 @ 1154 cb low level blips were ie when i arrived. left the area @ 1154. still nothing more than low level blips.
21726 04 Jun 2022 @ 1311 --- cb had water at 1308. empty at 1310
21619 31 May 2022 @ 1200 31 May 2022 @ 1340 cb Pool is high and steamy but not a blip was seen
21500 25 May 2022 @ 1346 --- Graham Splashing
21499 25 May 2022 @ 1316 --- Graham Splashing
21498 25 May 2022 @ 1214 --- Graham Splashed
21496 25 May 2022 @ 1118 --- Graham Bigger splash
21494 25 May 2022 @ 1052 --- Graham Splashing
21489 25 May 2022 @ 0953 --- Graham Small splashes from full pool.
21450 23 May 2022 @ 0903 23 May 2022 @ 1205 MAB similar to sorta cyclic preplay seen a few weeks ago - visible pushes and pool receding regularly prior to 1118 single tall spike above the berm - recede - another low splash at 1144 - more pushes then recede etc - saw another splash 1244 coming back from Nuphar but not continuous obs
20323 06 Nov 2021 @ 1656 --- MAB still low - no visible water in Primrose Springs- blowing snow & steam made it impossible to get a photo of the channel from them coming around the berm into Pinto but nada in it
20332 06 Nov 2021 @ 0809 --- MAB still low as seen from afar
20291 04 Nov 2021 @ 1646 --- MAB still well below full - seen from above Arsenic @ 1653 could see center blips
20274 03 Nov 2021 @ 1702 --- MAB visible center blips seen from above walking out
20277 03 Nov 2021 @ 1440 --- MAB still well below full - did see a little steam earlier today
20242 31 Oct 2021 @ 1720 --- MAB still well below overflow - also all Primrose Springs are empty
20228 30 Oct 2021 @ 1149 --- cb Has water in the platform but level is low. 2' of exposed rim around the platform. Not in overflow. no boil but a tiny whiff of steam
20194 29 Oct 2021 @ 1705 --- MAB much fuller than a.m. - Fireball started and I couldn't zoom in to see edges of the Crater
20205 29 Oct 2021 @ 0850 --- MAB more visible water in Pinto's crater as seen from above
20175 28 Oct 2021 @ 1155 --- MAB water visible in the crater seen from above - very light steam occasionally seen from Constant bench
20043 19 Oct 2021 @ 1226 --- cb platform dry. no water
20002 16 Oct 2021 @ 1342 --- cb pool is empty and platform dry
19921 06 Oct 2021 @ 1554 --- cb Pinto has water in its pool again. (dry for the past few weeks) and has a few bubbles breaking the surface over the vent.
18392 12 Jul 2021 @ 1058 12 Jul 2021 @ 1135 cb The main vent is increasingly getting taller (2") blips. The vent closest to the back berm is visable to the naked eye today and blipping ~1-2" also. 1135 bigger blips
18293 06 Jul 2021 @ 1536 --- MAB Viewed from above very faint center boil - this time it means more - it's post-eruptive. Pool seen full 40m after last bursts
18296 06 Jul 2021 @ 1027 --- MAB very faint center boil - still receiving waters from around the berm but not as much
18043 22 Jun 2021 @ 1235 --- MAB center blips as viewed from above - water color is odd grayish color- will look again at different light angles
17545 07 Jun 2021 @ 1000 --- MAB small bloops big enough to be visible from Constant bench - all day
17070 12 May 2021 @ 1408 --- MAB fairly strong boil visble in center
16941 28 Apr 2021 @ 1838 --- MAB Cool - water comes around the berm from E. Porcelain and flows into Pinto's pool
16265 26 Sep 2020 @ 1416 --- cb I have not seen Pinto this year. Pool is overflowing down its runoff channel but I can't see any convection waves or steam on this chilly, windy day.
13049 05 Aug 2019 @ 0926 --- MAB all day. Blips and bloops - never really saw runoff change
11020 20 Apr 2019 @ 0958 --- MAB Strong convection seen in the center when viewed from above past Hurricane.
10277 17 Sep 2018 @ 1532 --- MAB slight convection seen - first time I've seen it this season
8840 21 Jun 2018 @ 0955 21 Jun 2018 @ 1645 MAB Small blips, tiny domes and convection visible all day but not a huge amount of overflow.
3870 06 Nov 2016 @ 1503 --- srboom started trying to erupt, then aborted
2365 15 Sep 2015 @ 1016 --- MAB Increased convection and bubbles seen than those most of the summer, with good concentric mini-waves, as seen from above. (Remember 5 weeks of boardwalk closure, it was viewed from above frequently.) No noticeable increase in overflow though.
29886 20 Jul 2000 @ 1200 --- research-mab 7/20 - no time noted - "weak Disturbance" - Fireball eruptions are quite strong and Pinto’s are going about 12 minutes.
29915 25 Sep 1999 @ 1420 --- research-mab 9-25-99 - Other strange activity from Fireball with very few eruptions and Pinto saw only one eruption. With a full pool and overflow at about 1030 am then eruption did not come until 1420. What Happenin
29928 19 Apr 1998 @ 1200 --- research-mab 4/19/98 - no time noted - Pinto Geyser has stopped. Fireball is active. Arsenic is only having heavy boils.
29916 06 Apr 1998 @ 1200 --- research-mab 4/6/1998 - no time noted - Lots of interesting things going on in Porcelain Basin... Pinto Geyser is active!! This is the first activity here in about 20 years. (I have to do a bit more research to be sure.) Intervals appear to be about 2 hours and durations about 6 minutes. It looks like a miniature Echinus!
30109 03 Aug 1995 @ 1200 --- research-mab 8/3/1995 - no time noted - Primrose is empty still and Pinto has lower water levels approx 5” below rim.
30215 28 Sep 1994 @ 1800 --- research-mab 9/28/1994 - no time noted {pm} - pm Fireball remains very active. Good boil in Pinto! The temp has doubled in Pinto in two months.
7645 26 Jun 1986 @ 1800 --- research-mab 6-26-1986 Pinto Geyser – Flooded by affluents of SE Porcelain Basin with dark orange & brown algae extending into vent from the north. Cyanidium algae along east margin of pool. Discharge from Pinto is greater than inflow, with opalescent blue water over vent. T=137º
4848 19 Aug 1985 @ 1800 --- research-mab 8/19/1985 Pinto Geyser = continued about constant up to 2 feet or so all day = from ½ foot to 2 feet at most
30956 19 Aug 1985 @ 1800 --- research-mab 08/19/1985 - no time - Pinto Geyser = continued about constant up to 2 feet or so all day = from ½ foot to 2 feet at most
7606 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Pinto Geyser 72ºC Water, slightly turbid, is flowing in from the north. Medium gray color.
7651 31 Aug 1983 @ 1800 --- research-mab 8-31-83 Pinto G slight convection, med grn algae lined 56ºC
31051 19 Feb 1983 @ 1200 --- research-mab 2/19/1983 - no time noted - Pinto Geyser 124º overflowing slightly turbid H20 with green algae
31334 18 Jul 1982 @ 1200 --- research-mab July 18 1982 - no time noted - Pinto- quiet
31343 17 Jul 1982 @ 1201 --- research-mab Some Temps from Porcelain Basinland taken on July 17th - no time noted -Pinto geyser 200º taken 1 ½ minutes prior to the eruption. Tan/gray H20 splashing 2-3’ over vent prior to eruption & during the bursts were hitting an estimated 25-30’! Following the eruption the pool quickly drained completely. Pinto was only observed to erupt on July 17th. At least 4-6 eruptions were seen that day & since then it has returned to dormancy.
31326 17 Jul 1982 @ 1200 --- research-mab July 17, 1982 - no time noted - Pinto Geyser was erupting this morning! Very muddy brown water – highest bursts 25-30 feet. Eruptions occurring every 15 minutes. Last seen at ____ blank__. Runoff entirely into Africa’s vent.
31296 07 Jul 1982 @ 1200 --- research-mab 7/7/1982 - no time noted - Pinto Geyser & Ledge both quiet with disturbance
31591 11 Dec 1981 @ 1200 --- research-mab Dec 11 1981 - no time noted - Pinto Geyser 118º bright green algae, overflowing, no sign of eruption, calm slightly turbid H20 gently bubbling
31457 02 Aug 1981 @ 1200 --- research-mab Sunday August 2 1981 The Basin Wide Disturbance has occurred! - no time noted - Pinto Geyser – Grey, blue turbid bubbling and overflowing water 159ºF
31808 27 Sep 1980 @ 1200 --- research-mab Saturday September 27 1980 - no time noted - Pinto Geyser – Vigorous boiling now with clear water down 3 feet 204ºF
4620 22 Sep 1980 @ 1800 --- research-mab 9/22/1980 Pinto Geyser – Boiling very vigorously, water 2 feet down, but erupting 2 to 4 feet, white murky water 204ºF
4608 15 Sep 1980 @ 1800 --- research-mab 9/15/1980 Pinto Geyser – Turbid grey, bubbling mildly, increased overflow but no evidence of a disturbance related eruption 150ºF
31749 09 Sep 1980 @ 1200 --- research-mab Tuesday Sept 9 1980 - no time noted - Pinto Geyser – murky greyish water, a trickle of overflow 138°F
31616 08 Jun 1980 @ 1200 --- research-mab June 8 1980 - no time noted - Pinto Geyser – no sign of recent activity, 146ºF
5145 27 Sep 1979 @ 1800 --- research-mab 09/27/1979 Pinto – 200ºF – clear water, boiling violently out of an empty pool. Marker gone.
32001 27 Sep 1979 @ 1200 --- research-mab September 27 1979 - no time noted - Pinto – 200ºF – clear water, boiling violently out of an empty pool. Marker gone.
4998 20 Sep 1979 @ 1800 --- research-mab 09/20/1979 Disturbance Pinto Geyser – muddy gray water bubbling gently. Had the appearance of having erupted during the day. Marker of light gravel placed in run off channel. 163ºF Geyser in run off channel north of Constant which flows to the east of Constant. Perpetually spouting 2 to 5 feet. This same feature became active with last year’s season end change. - 188ºF
31939 18 Sep 1979 @ 1200 --- research-mab Sept 18 1979 - no time noted - Pinto Geyser 158°
5537 29 Jun 1976 @ 1540 29 Jun 1976 @ 1600 research-mab 06/29/1976 Arsenic, Moxie & Pinto erupting simultaneously from 3:40 -4:00
32678 24 Aug 1975 @ 1200 --- research-mab 08/24/1975 - no time noted - 17- Pinto Geyser – has changed color from light pink to light green, the temp = 150º
32661 22 Aug 1975 @ 1200 --- research-mab 08/22/1975 - no time noted - More changes in Porc. - Pinto area flooded, Pinto bubbling.
32716 23 Aug 1974 @ 1208 --- research-mab 08/23/1974 - no time noted - Pinto full of clear water
32850 25 Sep 1973 @ 1200 --- research-mab 9/25/1973 - no time - Pinto Geyser 196° water down in vent, none in basin, water-clear green.
6057 18 Aug 1973 @ 1800 --- research-mab 08/18/1973 Pinto in eruption AM
6449 02 Sep 1972 @ 1800 --- research-mab 09/02/1972 Pool around Pinto has drained
6440 27 Aug 1972 @ 1800 --- research-mab 08/27/1972 Pinto has become a pool approx. 10’-12’ in diameter. Very hot with bubbling from the vent. A good deposit of sulphur around the vent makes the center of the pool appear greenish.
33299 09 Aug 1972 @ 1200 --- research-mab - no time noted - Pinto started to erupt after the Aug 9 change. Was seen to play up to 30 feet. No cycle as yet.
7869 09 Aug 1972 @ 1100 --- research-mab Pinto Geyser: The first known tall eruptions were observed for several days after the September 9th, 1971 disturbance, none since then until August 9th, 1972: {generic time}
33298 15 May 1972 @ 1200 --- research-mab May 15 1972 – no time - 198F Some geyser activity up to one foot, no overflow that I can see.
6513 14 Sep 1971 @ 1800 --- research-mab 09/14/1971 Some new changes noted in Porcelain: Pinto had no observed eruptions today.
6523 12 Sep 1971 @ 1800 --- research-mab 09/12/1971 Pinto Geyser – no eruptions were observed today
EntrySourceLinkComment
09 Aug 2014 @ 1629 JSJ https://www.youtube.com/watch?v=ucVjOxMzsT4 See clips # 10-18 (time stamp - 1:37) of this video compilation.
09 Aug 2014 @ 1527 JSJ https://www.youtube.com/watch?v=ucVjOxMzsT4 See clips # 3-9 (time stamp - 0:23) of this video compilation.
08 Aug 2014 @ 1813 JSJ https://www.youtube.com/watch?v=ucVjOxMzsT4 See clips # 1-2 of this video compilation.
Baseline does not exist.