Last Known Eruption
27d 46m ago

Latest Eruptions

Eruption DurationInterval
28 Apr 2024 @ 11236m 8m
28 Apr 2024 @ 11159m
28 Apr 2024 @ 11062m 3d 22h 51m
24 Apr 2024 @ 12151m 16m
24 Apr 2024 @ 11591m 8m
24 Apr 2024 @ 11512m 22m
24 Apr 2024 @ 112915m
24 Apr 2024 @ 11149m 28m
24 Apr 2024 @ 1046 ie37d 22h 57m
17 Mar 2024 @ 11499m 146d 21h 40m
22 Oct 2023 @ 1409~12m 53s 2d 6h 4m
20 Oct 2023 @ 0805 ie18h 29m
19 Oct 2023 @ 13361d 22h 14m
17 Oct 2023 @ 1522 ns9m 1s 4h 47m
17 Oct 2023 @ 103510m 2s 2h 27m
17 Oct 2023 @ 08089m 29s 2d 17h 6m
14 Oct 2023 @ 1502 ie4h 9m
14 Oct 2023 @ 1053~5m 1h 50m
14 Oct 2023 @ 09035m 50s 6d 21h 11m
07 Oct 2023 @ 11526m 1h 10m
07 Oct 2023 @ 1042 ns6m 1d 21h 18m
05 Oct 2023 @ 13245d 2h 41m
30 Sep 2023 @ 104313m 31s 1h 51m
30 Sep 2023 @ 0852~7.5m 19h 31m
29 Sep 2023 @ 1321 ie1h 52m
29 Sep 2023 @ 1129 ns8m 2d 21h 37m
26 Sep 2023 @ 1352~7.5m 1h 48m
26 Sep 2023 @ 12048m 1h 39m
26 Sep 2023 @ 10258m 1d 20h 24m
24 Sep 2023 @ 1401~7m 1h 45m
24 Sep 2023 @ 12167m 1h 45m
24 Sep 2023 @ 10316m 1h 43m
24 Sep 2023 @ 08486m 2d 20h 52m
21 Sep 2023 @ 11567m 1d 1h 3m
20 Sep 2023 @ 10536m 18s 1h 27m
20 Sep 2023 @ 09268m 21h 22m
19 Sep 2023 @ 12041h 32m
19 Sep 2023 @ 103212m 1d 17h 3m
17 Sep 2023 @ 1729<1m 5h 28m
17 Sep 2023 @ 12016m 1h 37m
17 Sep 2023 @ 10245m 29s 1h 17m
17 Sep 2023 @ 09075m 32s 4d 16h 15m
12 Sep 2023 @ 16521h 25m
12 Sep 2023 @ 1527~5m 22m
12 Sep 2023 @ 150528s 1h 9m
12 Sep 2023 @ 1356~4m 31m
12 Sep 2023 @ 13251d 21h 11m
10 Sep 2023 @ 1614~4m 7m
10 Sep 2023 @ 16071d 2h 16m
09 Sep 2023 @ 1351~2m 1h 24m
09 Sep 2023 @ 1227~5m 25m
09 Sep 2023 @ 1202 nsLess than a minute I think10d 17h 33m
29 Aug 2023 @ 1829 ns~4m 19m
29 Aug 2023 @ 181036s 57m
29 Aug 2023 @ 1713 ns~4m 57m
29 Aug 2023 @ 1616 ns15m
29 Aug 2023 @ 16015m
29 Aug 2023 @ 155620h 25m
28 Aug 2023 @ 193142m
28 Aug 2023 @ 1849 ns42m
28 Aug 2023 @ 1807 ns13m
28 Aug 2023 @ 17541m 2s 1h 13m
28 Aug 2023 @ 1641 ns51m
28 Aug 2023 @ 15506d 7m
22 Aug 2023 @ 1543 ie5m 32s 1h 26m
22 Aug 2023 @ 1417 ie5m 5s 1h 32m
22 Aug 2023 @ 1245 ie5m 23s 6d 21h 11m
15 Aug 2023 @ 1534 ie35m
15 Aug 2023 @ 1459 ie19m
15 Aug 2023 @ 1440 ie24m
15 Aug 2023 @ 1416 ie39m
15 Aug 2023 @ 1337 ie28m
15 Aug 2023 @ 1309 ie27m
15 Aug 2023 @ 1242 ie35m
15 Aug 2023 @ 1207 ie19m
15 Aug 2023 @ 1148 ie20m
15 Aug 2023 @ 112811m
15 Aug 2023 @ 111741m
15 Aug 2023 @ 1036 ie16h 25m
14 Aug 2023 @ 181141m
14 Aug 2023 @ 1730~2m 43m
14 Aug 2023 @ 1647~2m 13d 22h 9m
31 Jul 2023 @ 1838~5.5m 1h 16m
31 Jul 2023 @ 17225m 17s 1h 7m
31 Jul 2023 @ 16155m 20s 1h 16m
31 Jul 2023 @ 14595m 31s 1h 7m
31 Jul 2023 @ 13525m 20s 23m
31 Jul 2023 @ 13291m 11s 1h 24m
31 Jul 2023 @ 12055m 40s 16m
31 Jul 2023 @ 1149 ns1h 5m
31 Jul 2023 @ 10445m 45s 1h 53m
31 Jul 2023 @ 0851 ns6m 21m
31 Jul 2023 @ 0830 ns36m
31 Jul 2023 @ 0754 ns3d 17h 47m
27 Jul 2023 @ 1407 ie2d 2h 34m
25 Jul 2023 @ 1133 ns1h 36m
25 Jul 2023 @ 09576m 1d 16h 25m
23 Jul 2023 @ 17322m 1h 6m
23 Jul 2023 @ 1626 ns2d 22h 16m
20 Jul 2023 @ 18105m 29s 20m

Interval Statistics

Interval Count100
Min5m
Max146d 21h 40m
Mean2d 19h 51m
Median1h 24m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
34237 19 Apr 2024 @ 0922 19 Apr 2024 @ 1150 MAB when possible {lots steam + wind} I noted when low burbling started - these would maybe stop but return fairly quickly with surges to 2ft {3ft at best) before abruptly stopping - some would not stop but just continue burbling before building to the surge - the highest surge durations were less than 50sec - when possible to see general intervals were ~5-6min
29321 31 Oct 2023 @ 1200 --- MAB no audible eruptions all morn - when fog would clear briefly saw a little steam creeping down channel - but it never reached Colloidal
25940 30 May 2023 @ 0850 30 May 2023 @ 1910 MAB Arrived at the bench 0850 - IE in a low burble most of the day with activity notably increasing a few times {0923 1226 1453 & 1620 seen} to the point that in other years it would be the start of a full eruption. Those surges were from 12-18in lasting about 60sec
25875 28 May 2023 @ 2035 28 May 2023 @ 2130 SantaFe108 Splashing from inches to ~1ft high. Lighting is not good so couldn't tell if there was a pause at any point.
25527 18 May 2023 @ 0905 --- MAB 0905 thru 1500 - burbling varying in intensity - at the peak bursts could be nearly 12in - hard to discern if it ever actually stopped - even harder to see once the day warmed up
25060 27 Feb 2023 @ 1400 --- MAB approx time - seen from various vantage points appeared to have low burbles but hard to see with steamy conditions - never saw anything more than a few inches in height if that
24588 30 Oct 2022 @ 1828 --- MAB briefly big @1827-1828 but won't enter others - see Friday 28th Note
24526 29 Oct 2022 @ 1811 --- MAB same deal as yesterday low play then ~30s of bigger bursts near end then repeat but I'm not writing them down
24507 28 Oct 2022 @ 0836 28 Oct 2022 @ 1838 MAB Definitely Periodic! Thought I heard splashes in the morn but couldn't see a thing. Low burbles then were observed to pause every ~5m. As visibility improved I could see some decent height bursts some as much as 4ft, full bodied and wide. Those best-bursts lasted 30s or less then the flow {and steam} flowing into Colloidal would cease. Some of the low play would not evolve into the larger bursts but no way to know which would or would not, and finding an actual start to time was a problem, so I collected times of the biggest bursts as 'IE near end' because I wanted these intervals saved for the record. Some are obviously not Closed Intervals as Constant or Whirligig took my attentions but you get the idea.
24393 15 Oct 2022 @ 1842 --- MAB still burbling as high as 8in as seen the last 2 days
24267 05 Oct 2022 @ 1434 05 Oct 2022 @ 1600 cb continuous small low level blips observed from the Constant bench
23884 17 Sep 2022 @ 1715 17 Sep 2022 @ 1830 MAB steady low play from 1-4in
23563 04 Sep 2022 @ 1245 --- cb barely visable splashes in the vent observed above with binoculars
23373 23 Aug 2022 @ 1030 23 Aug 2022 @ 1825 MAB burbling to a few inches during most of my time today - some up to 8in - some pauses - repeat
23253 18 Aug 2022 @ 1852 --- MAB seen burbling 6in or so from above until it was out of sight
23227 16 Aug 2022 @ 1703 16 Aug 2022 @ 1723 MAB small burbling barely visible - stopped 1723
23053 05 Aug 2022 @ 1120 05 Aug 2022 @ 1314 cb a steady blipping boil ~2"-5"
22395 08 Jul 2022 @ 0944 08 Jul 2022 @ 1125 cb low level blips
22243 30 Jun 2022 @ 1052 --- cb start of low level (just visable) blips.
21491 25 May 2022 @ 1007 --- Graham Boiled up but then quit.
20276 03 Nov 2021 @ 0828 03 Nov 2021 @ 1612 MAB morphed between low burps and more robust bursts of maaaybe 15in all day with a few seconds of quiet - may be regular but didn't track it closely
20178 28 Oct 2021 @ 0840 28 Oct 2021 @ 1522 MAB low burble all day - puts out enough water to steam up the runoff channel - a few times it built a few inches higher like typically pre start but no go
20117 24 Oct 2021 @ 0855 24 Oct 2021 @ 0921 MAB Low burbling while in the area
19951 10 Oct 2021 @ 0852 --- MAB low burbling while in the area - didn't build any higher that I saw
18306 07 Jul 2021 @ 0939 --- cb looks recently post eruptive. very wet runoff channel and gently steaming.
18038 22 Jun 2021 @ 1232 --- MAB visible burbles after 0900 which slowed by 1000 - viewed from above 1232 vent area has water but is not overflowing
17717 12 Jun 2021 @ 1900 --- MAB Tiny burbles visible from above - runoff channel damp most of the way to Colloidal
17544 07 Jun 2021 @ 0902 --- MAB Saw Arsenic burbling in the morning but it never progressed - coming back from Nuphar @ 1800 water is visible around the vent and down the channel but no steam
17074 12 May 2021 @ 0936 --- MAB heavy steam in channel all the way to Colloidal- must have just finished
8004 26 Apr 2018 @ 1127 --- Micah Kipple It's having very frequent splashing 10-20 cm but am only entering true jetting eruptions.
4171 31 May 2017 @ 1200 --- kc Arsenic was on and off all afternoon with durations ranging from 1 to 5 minutes.
3987 21 Apr 2017 @ 0956 21 Apr 2017 @ 1022 MAB Appears to start, but never reaches full height. Not closed intervals as it was very steamy and I was walking around the lower loop.
2398 21 Sep 2015 @ 0930 21 Sep 2015 @ 1410 MAB Burbling and looking pre-eruptive for 4 hours, no eruption seen. Same for the afternoon visit from 1641 - 1750
2380 18 Sep 2015 @ 0603 --- MAB I had a good handle on Arsenic pre-disturbance. It has skunked me the last 4 visits, sometimes burbling and looking quite pre-eruptive. Jake may have seen the last one for a while! I will start noting the burbles that are about 4" and see if they fit the interval pattern from earlier this month. I hope I am just unlucky and am missing them.
3756 15 Aug 2015 @ 0941 --- jh23487 Arsenic was either erupting or bubbling a little, not very tall. Possibly at the end of an eruption.
29755 09 Jun 2007 @ 1130 --- research-mab 6/9/2007 - Arsenic has been burping on & off since 1130 hrs.
29794 11 Jun 2006 @ 1200 --- research-mab 6/11/2006 - no time noted - Arsenic 2-7 minute intervals.
29930 19 Apr 1998 @ 1200 --- research-mab 4/19/98 - no time noted - Arsenic is only having heavy boils.
29920 06 Apr 1998 @ 1200 --- research-mab 4/6/1998 - no time noted - Lots of interesting things going on in Porcelain Basin... . Arsenic is anemic.
30220 26 Oct 1994 @ 1200 --- research-mab 10/18-26 1994 - no times noted - Arsenic had a very strange start. It began its normal eruption, got to approx 1½ feet then quit after 2 minutes! About 30 minutes later it started again!! This time a normal eruption. Very strange.
4696 02 Jul 1988 @ 1800 --- research-mab 7/2/1988 Also, Arsenic geyser is erupting this summer.
33467 26 Apr 1987 @ 1217 26 Apr 1987 @ 1546 research-mab 04/26/1987 Arsenic Geyser – Interesting cycle of activity noted in Arsenic. At 12:17, 12:23, and 13:31, a 2 – 5 foot, 20 second eruption occurred. The vent was then quiet until another cycle at 13:07, 13:12, 13:16, 13:20, 13:32, 13:35, 13:44 and 13:49. Each eruption lasted a little longer and was slightly more powerful. The third cycle was at 14:01, 14:14, 14:23, 14:33, 14:36, and 14:49. The water in all the eruptions was a muddy grey. Another minor at 15:01:27 suddenly started into a major eruption. Ranging from 3 – 20 feet, it ended at 15:46:31. The major started with muddy water but it cleared to a more clear blue.
7638 26 Jun 1986 @ 1800 --- research-mab 6-26-1986 Arsenic Geyser – Active. Clear, full, boiling before eruption. T=201º
31021 02 Sep 1984 @ 1200 --- research-mab 9/2/1984 - no time noted - Much activity on Porcelain compared to normal. Arsenic, and Fireball very active.
30972 12 Jun 1984 @ 1200 --- research-mab Tuesday June 12 1984 - no time noted - Arsenic and Fireball playing simultaneously for several minutes.
7604 11 Feb 1984 @ 1800 --- research-mab 2-11-84 Arsenic Geyser active.
5367 11 Aug 1983 @ 1800 --- research-mab 8/11/1983 Arsenic Fireball Splutterpot in simultaneous eruption {time unknown}
31080 20 May 1983 @ 1200 --- research-mab May 20 1983 - no time noted - Disturbance!... Arsenic – perpetual wheezy eruption, smaller than normal. The spouters behind Arsenic are active too. {geezer? mab}
31384 26 Aug 1982 @ 1200 --- research-mab Aug 26 1982 - no time noted - Arsenic erupted in afternoon
31344 17 Jul 1982 @ 1201 --- research-mab Some Temps from Porcelain Basinland taken on July 17th - no time noted - Arsenic 200º overflowing splashing 3’ above the vent.
31328 17 Jul 1982 @ 1200 --- research-mab July 17, 1982 - no time noted - Arsenic in a low constant eruption
31320 08 Jul 1982 @ 1400 08 Jul 1982 @ 1845 research-mab July 8th – TM in Porcelain 1400-1845 - Arsenic Geyser Most of time I was in the Porcelain Basin it was barely spouting above the main vent. Except: (below) 3:54 to 4:07= went up to 6 feet = maybe few bursts little higher- 18:25 to some afterwards= went to 3 or 4 feet
31298 07 Jul 1982 @ 1200 --- research-mab 7/7/1982 - no time noted - Arsenic in a low, probably perpetual eruption.
31590 11 Dec 1981 @ 1200 --- research-mab Dec 11 1981 - no time noted - Arsenic 178º ie but not in the H20 as it was being ejected. Bursts 7-10’ The eruption lasted at least ½ hr. & it was still sputtering an hour later
4644 14 Aug 1981 @ 1200 --- research-mab 8/14/1981 - no time noted - Arsenic Geyser is in perpetual spluttering as is Moxie and 2 other small spouters. Fireball is somewhat weak. GS
31509 13 Aug 1981 @ 1200 --- research-mab Aug 13 1981 - no time noted - Acute Spouter was in a perpetual 1 to 2 foot eruption all day Arsenic and Sunday geyser were also perpetually playing.
31455 02 Aug 1981 @ 1200 --- research-mab Sunday August 2 1981 The Basin Wide Disturbance has occurred! - no time noted - Arsenic Geyser – in a low perpetual 2 to 5 foot eruption, clear water all day, 203ºF
31807 27 Sep 1980 @ 1200 --- research-mab Saturday September 27 1980 - no time noted - Arsenic Geyser – erupting 2 to 6 feet, 203ºF
4615 22 Sep 1980 @ 1800 --- research-mab 9/22/1980 Arsenic Geyser – in a low eruption a good share of the day ie 204ºF
31752 09 Sep 1980 @ 1200 --- research-mab Tuesday Sept 9 1980 - no time noted - Arsenic Geyser – not ie 199°
4762 22 Jul 1980 @ 1315 22 Jul 1980 @ 1330 research-mab 7/22/80 Porcelain 1:15-1:30 -Arsenic – constant, one to two feet
5133 01 Jun 1980 @ 1800 --- research-mab 06/01/1980 Arsenic was observed in two different eruptions to 5’. (no times)
31989 27 Sep 1979 @ 1200 --- research-mab September 27 1979 - no time noted - Arsenic Geyser – 200ºF- continues perpetual eruption of clear water 2 to 6 feet high.
31982 26 Sep 1979 @ 1200 --- research-mab September 26 1979 - no time noted - Arsenic and Acute Spouter continue their small, perpetual eruptions.
5065 21 Sep 1979 @ 1200 --- research-mab 09/21/1979 - no times noted - Africa, Fireball, Arsenic and Geyser north of Constant all perpetual spouters. {probably Acute Spouter?-mab}
5060 15 Aug 1979 @ 1800 --- research-mab 08/15/1979 Five geysers erupted in concert today down in the Porcelain Basin Arsenic, Africa, Fireball, Little Wirlygig, and Constant. A new small geyser (sideways) erupted 1 foot today on the eastern side of Constant. {probably Acute spouter?- mab}
4967 01 Jul 1978 @ 1110 --- research-mab 07/01/1978 Good activity out of Porcelain this morning. Between 1000 am and 1110 am geysers in eruption included Fireball, Africa, Blue, Dark Cavern, Big Whirligig (twice), Constant (twice) and * Arsenic Geyser (10 min+). *Today was the first recorded observation of this geyser in eruption recorded this summer.
5116 19 Aug 1977 @ 1800 --- research-mab 08/19/1977 Arsenic splashing up to 15” high, much as it did for most of last year.
32286 12 Jul 1977 @ 1800 --- research-mab 07/12/1977 - no time noted - Africa Fireball Arsenic Blue Big Whirly and Constant all in eruption at once.
32260 22 Jan 1977 @ 1800 --- research-mab Jan 22 1977 (Rick H) - no time - Arsenic Geyser – in eruption in pm 8 feet
5239 07 Sep 1976 @ 1800 --- research-mab 09/07/1976 Arsenic – mainly steam
32486 18 Aug 1976 @ 1200 --- research-mab 08/18/1976 - no times noted - Arsenic putting out a lot of steam, Moxie seen in action only twice.
32472 08 Aug 1976 @ 0920 --- research-mab 08/08/1976 Arsenic in a steam phase 0920 – only minor puffs of steam being emitted
32471 07 Aug 1976 @ 1630 --- research-mab 08/07/1976 - Arsenic eruptions seemed to be related to eruptions of Moxie. When observed from 430-500. When Moxie erupted Arsenic would decline to nearly nothing. Then it would surge forth strongly when Moxie was inactive.
5271 28 Jul 1976 @ 0900 --- research-mab 07/28/1976 Ragged & Arsenic both active as usual at 9:00
5554 20 Jul 1976 @ 1800 --- research-mab 07/20/1976 Arsenic & Fireball continue their nearly constant type of activity, but the intensity of the activity varies.
5535 29 Jun 1976 @ 1540 29 Jun 1976 @ 1600 research-mab 06/29/1976 Arsenic, Moxie & Pinto erupting simultaneously from 3:40 -4:00
5863 28 Jun 1976 @ 1550 28 Jun 1976 @ 1610 research-mab Arsenic Geyser erupting constantly during above interval.
5836 21 Sep 1974 @ 1428 --- research-mab 09/21/1974 1428 Africa quits, now only Arsenic {noted as Geezer in log} is erupting (3’)
6203 26 Sep 1973 @ 1800 --- research-mab 09/26/1973 Temperatures taken yesterday Arsenic Geyser 200 – not erupting {included here since it’s not mentioned much this year-mab}
32849 25 Sep 1973 @ 1200 --- research-mab 9/25/1973 - no time - Arsenic Geyser 200° – not erupting {mab - included here since it’s not mentioned much this year tho 1974 ID of this feature was wrong will put it here}
5925 17 Mar 1973 @ 0800 --- research-mab 03/17/1973 Arsenic was in its “steam phase” during all of this time.{written in morning section of log}
5912 12 Mar 1973 @ 1200 12 Mar 1973 @ 1815 research-mab 03/12/1973 Arsenic The water level was seen throughout the morning and early afternoon to be gradually rising in the vent. Accompanying the filling was continuous minor play with splashing originating at the northeastern end. During the afternoon the minor play became gradually more vigorous with water occasionally splashing out. At 1342 the last 3-4 inches to the top of the vent rapidly filled and was accompanied by the splashing changing into a series of fountain-like jets with massive overflow & runoff. After 9 minutes of play the water bursts became intermittent & more mixed with steam to end the true water phase. At 1445 the “steam phase” was still in progress with occasional bursts up to 2-3 feet, while at 1610 all play had ceased. A second phase of activity began sometime between 4:30 and 4:40, with the new “steam phase” beginning at approximately 4:45 and running to approximately 6:15.
5910 10 Mar 1973 @ 1635 --- research-mab 03/10/1973 At 4:35 Feisty, dark Cavern, Africa, Little Whirligig, Fireball, Blue, Arsenic, and Constant Geyser were all seen to be playing at the same time. (for 10-15 seconds due to the very short duration of Constant) Four playing together is not unusual but 8 is.
6489 11 Sep 1972 @ 1200 --- research-mab 09/11/1972 Bear Den, Dark Cavern, Africa. L. Whirligig, Blue, Fireball & Arsenic all have been observed in eruption this morning. {generic a.m. time}
6428 19 Aug 1972 @ 1800 --- research-mab 08/19/1972 Little Whirligig, arsenic, & Africa are still playing continuously. Ledge still has intermittent spray type minor play.
6398 15 Aug 1972 @ 1800 --- research-mab 08/15/1972 Arsenic – still in constant eruption, spraying water to a height of 5-7 feet.
6396 14 Aug 1972 @ 1800 --- research-mab 08/14/1972 L. Whirligig & Arsenic are still in continuous eruption.
6387 12 Aug 1972 @ 1200 --- research-mab 08/12/1972 - no time - Arsenic & Little Whirligig have not been observed to quit yet.
7866 09 Aug 1972 @ 0800 09 Aug 1972 @ 1800 research-mab 8/9/1972 Arsenic Geyser in constant 2-8’ eruption all day (before 8:00am to after 6:00 pm) normal 3-4 hours
6350 23 Jul 1972 @ 1400 --- research-mab 07/23/1972 At the end of the 1:30 walk there were 6 geysers in simultaneous eruption – Blue, Iris, Fireball, Arsenic, Africa and Little Whirligig.
6334 08 Jun 1972 @ 1548 --- research-mab 06/08/1972 Africa, Bear Den, Ledge, L. Whirligig, Arsenic and Possibly Blue (crossed out “Iris”) were all erupting at the same time at 3:48
6498 15 May 1972 @ 1800 --- research-mab 05/15/1972 Arsenic geyser – have not noticed an eruption 148º
33197 15 May 1972 @ 1200 --- research-mab May 15 1972 - no time - 198F Active all summer, playing several times a day – no time taken play for 15 to 20 minutes up to 5 to 8 feet. Check Log.
7670 12 Aug 1970 @ 1800 --- research-mab 08/12/1970 Much activity in Porcelain in late pm (6-7) Arsenic, Fireball, and Fan went off in succession. 8/12/1970 Dark Cavern had extended eruption also.
33196 19 Aug 1969 @ 1200 --- research-mab 1969 – Aug 19 1969 - no time - 200ºF Plays for about 15 minutes every ___ minutes.
7088 28 Jun 1966 @ 1800 --- research-mab 06/28/1966 Fireball & Arsenic both active this afternoon.
6797 24 Oct 1964 @ 1800 --- research-mab 10/24/1964 Arsenic is sloshing around but not erupting over the lip.
6775 17 Oct 1964 @ 1800 --- research-mab 10/17/1964 Fan {FIREBALL} & Arsenic are weak.
6772 16 Oct 1964 @ 1800 --- research-mab 10/16/1964 Fan {FIREBALL} & Arsenic are occasionally quiet & very weak.
EntrySourceLinkComment
09 Aug 2014 @ 1554 JSJ https://www.youtube.com/watch?v=2gpPvJbTC3g#t=1m47s Video clips (time stamp 1:47 to the end) of Arsenic Geyser's 3:54 to ~4:10 PM eruption on 9 August 2014.
07 Jul 2014 @ 1432 JSJ https://www.youtube.com/watch?v=2gpPvJbTC3g Video clips (beginning to time stamp 1:46) of Arsenic Geyser in eruption from 2:32 to ~2:45 PM on 7 July 2014.
Baseline does not exist.