Last Known Eruption
1y 170d 21h 35m ago

Latest Eruptions

Eruption DurationInterval
24 Jun 2018 @ 1020 ie3d 10m
21 Jun 2018 @ 1010 ie4y 16d 14h 55m
05 Jun 2014 @ 1915272d 3h 4m
06 Sep 2013 @ 1611 ie11y 38d 6h 8m
02 Aug 2002 @ 10031y 360d 13h 0m
06 Aug 2000 @ 210329m
06 Aug 2000 @ 20341y 18d 10h 34m
20 Jul 1999 @ 100042d 22h 49m
07 Jun 1999 @ 11112y 333d 20h 51m
08 Jul 1996 @ 14201h 30m
08 Jul 1996 @ 12501h 18m
08 Jul 1996 @ 113257m
08 Jul 1996 @ 10351y 31d 1h 15m
08 Jun 1995 @ 0920122d 17h 5m
05 Feb 1995 @ 1515148d 20h 48m
09 Sep 1994 @ 192796d 4h 31m
05 Jun 1994 @ 1456256d 3h 27m
22 Sep 1993 @ 1128:302m 0s
22 Sep 1993 @ 1126:301m
22 Sep 1993 @ 112531d 50m
22 Aug 1993 @ 103539m
22 Aug 1993 @ 095635d 22h 23m
17 Jul 1993 @ 11335m
17 Jul 1993 @ 112813m
17 Jul 1993 @ 111541m
17 Jul 1993 @ 10342d 20h 49m
14 Jul 1993 @ 1345 ie5d 2h 35m
09 Jul 1993 @ 11101d 26m
08 Jul 1993 @ 10442y 311d 22h 53m
31 Aug 1990 @ 11511y 50d 22h 51m
11 Jul 1989 @ 130010d 19h 55m
30 Jun 1989 @ 1705351d 2h 50m
14 Jul 1988 @ 14152y 329d 30m
20 Aug 1985 @ 1345 ie13d 45m
07 Aug 1985 @ 1300 A32d 1h 30m
06 Jul 1985 @ 1130 ? A1y 322d 0m
19 Aug 1983 @ 113016d 19h 50m
02 Aug 1983 @ 15408d 19h 40m
24 Jul 1983 @ 2000 A4d 9h 30m
20 Jul 1983 @ 10302y 1d 19h 21m
18 Jul 1981 @ 15094h 9m
18 Jul 1981 @ 110021d 23h 56m
26 Jun 1981 @ 11042y 9d 21h 19m
17 Jun 1979 @ 1345 ie260d 21h 38m
29 Sep 1978 @ 1607 ie20d 4h 34m
09 Sep 1978 @ 1133 ie45d 23h 3m
25 Jul 1978 @ 12301d 22h 40m
23 Jul 1978 @ 135011d 3h 0m
12 Jul 1978 @ 105033d 18h 28m
08 Jun 1978 @ 1622 ie4h 34m
08 Jun 1978 @ 1148 ie75d 1h 21m
25 Mar 1978 @ 09271y 188d 21h 27m
17 Sep 1976 @ 1300 ie1d 3h 0m
16 Sep 1976 @ 1000 ie1d 20h 0m
14 Sep 1976 @ 1400 ie1d 15m
13 Sep 1976 @ 1345 ie2d 3h 45m
11 Sep 1976 @ 1000 ie19h 20m
10 Sep 1976 @ 1440 ie1h 15m
10 Sep 1976 @ 1325 ie20h 40m
09 Sep 1976 @ 1645 ie5h 30m
09 Sep 1976 @ 1115 ie1d 20h 59m
07 Sep 1976 @ 14161d 2h 1m
06 Sep 1976 @ 12151d 20h 25m
04 Sep 1976 @ 1550 ie7h 35m
04 Sep 1976 @ 0815 ie2d 18h 30m
01 Sep 1976 @ 1345 ie2h 15m
01 Sep 1976 @ 1130 ie23h 35m
31 Aug 1976 @ 1155 ie18h 55m
30 Aug 1976 @ 1700 ie22h 0m
29 Aug 1976 @ 1900 ie9h 30m
29 Aug 1976 @ 0930 ie2d 20h 30m
26 Aug 1976 @ 1300 ie22h 20m
25 Aug 1976 @ 1440 ie4h 20m
25 Aug 1976 @ 1020 ie1d 19h 25m
23 Aug 1976 @ 1455 A20h 45m
22 Aug 1976 @ 18106h 40m
22 Aug 1976 @ 1130 A23h 50m
21 Aug 1976 @ 1140 ie2d 40m
19 Aug 1976 @ 1100 A21h 10m
18 Aug 1976 @ 1350 ie3h 0m
18 Aug 1976 @ 1050 ie21h 5m
17 Aug 1976 @ 1345 ie3h 15m
17 Aug 1976 @ 1030 ie16h 0m
16 Aug 1976 @ 1830 ie1d 1h 45m
15 Aug 1976 @ 1645 ie1d 3h 35m
14 Aug 1976 @ 1310 ie2d 23h 30m
11 Aug 1976 @ 1340 ie23h 0m
10 Aug 1976 @ 1440 ie1d 4h 10m
09 Aug 1976 @ 1030 ie2h 0m
09 Aug 1976 @ 0830 ie17h 0m
08 Aug 1976 @ 1530 ie1d 53m
07 Aug 1976 @ 1437 ie23h 52m
06 Aug 1976 @ 14459d 4h 0m
28 Jul 1976 @ 1045 ie23h 45m
27 Jul 1976 @ 11001d 30m
26 Jul 1976 @ 103030m 1d 19h 26m
24 Jul 1976 @ 1504 ie2d 22h 34m
21 Jul 1976 @ 16301d 1h 47m
20 Jul 1976 @ 1443 ie5d 22h 43m
14 Jul 1976 @ 16003h 0m

Interval Statistics

Interval Count100
Min1m
Max11y 38d 6h 8m
Mean153d 4h 46m
Median1d 19h 43m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
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.
4741 27 Aug 1991 @ 1800 --- research-mab 08/27/1991 Blue more active today
4717 02 Aug 1990 @ 1800 --- research-mab 8/2/1990 Blue Geyser having high bursts frequently.
4695 07 Aug 1988 @ 1800 --- research-mab 8/7/1988 Blue Geyser – frequent 8-10 ft bursts
7639 26 Jun 1986 @ 1800 --- research-mab 6-26-1986 Blue Geyser. Near continuous eruption 2-7m high; water slightly opalescent blue. T=199º
7626 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Blue Geyser in continuous eruption – est. disch 1 gpm
4671 13 Sep 1983 @ 1045 --- research-mab 9/13/1983 1045 Blue has been empty, Graceful erupting, Primrose Springs spouting 2 feet
4668 07 Jul 1983 @ 1800 --- research-mab 7/07/1983 Blue geyser seems to be in almost continuous eruption. Eruption from Geezer and Arsenic and Fireball simultaneously – did not get duration.
4618 12 Aug 1980 @ 1800 --- research-mab 08/12/1980 Blue Geyser – continual eruption with bursts at 1/sec up to ~ 20 feet
5135 01 Jun 1980 @ 1800 --- research-mab 06/01/1980 Blue Geyser – nice bursts 5 to 40 feet, clear dark blue color. Iris erupting.
4990 22 Sep 1979 @ 1800 --- research-mab 09/22/1979 Blue Geyser continues to erupt dark grey muddy water. The flow of dark grey water has destroyed all of the colorful algae growth in the runoff channels of Porcelain Basin.
5021 17 Jun 1979 @ 1015 --- research-mab 06/17/1979 At 1015 Blue Geyser was drained for what may be the first time this summer.
5151 15 Sep 1978 @ 1327 --- research-mab 09/15/1978 Iris, Blue, Fiesty [sic] and Ragged Spouter, plus a dozen unnamed spouters, all ie at 1327
5093 01 Apr 1978 @ 1145 --- research-mab 04/01/1978 Feisty erupting at 1145, Ragged & Blue quiet.
6105 28 Aug 1977 @ 1800 --- research-mab 08/28/1973 Blue Geyser is clearing – but not overflowing at this time; eruption is weak. {no specific time}
5112 15 Aug 1977 @ 1800 --- research-mab 08/15/1977 Blue Geyser does not seem to erupt anymore. The pool fills and boils vigorously but no true eruption.
5273 31 Aug 1976 @ 1430 --- research-mab 08/31/1976 During the 2:30 walk, Blue & Feisty were still erupting.
5559 21 Jul 1976 @ 1530 21 Jul 1976 @ 1600 research-mab 07/21/1976 Blue Geyser was completely drained at 3:30. It began to fill slowly & by 3:42, was nearly half full. At this time, splashing & build up of splashes to large bursts began, accompanied by continued filling. Blue was full by 4:00, when it quieted down again & splashing was either very minor or non-existent.
5641 20 Aug 1975 @ 1800 --- research-mab 08/20/1975 Blue Geyser – belching muddy water
5621 22 Jul 1975 @ 1215 --- research-mab 07/22/1975 Blue Geyser – filling crater with water appeared ready to go into eruptive phase 1215
5603 04 Jul 1975 @ 1210 --- research-mab 07/04/1975 Blue Geyser was not erupting and was ½ drained at 1210 this pm. Since the dark water was no longer flooding that part of the basin some of the color has returned, ie Iris Spring.
5595 30 Jun 1975 @ 1800 --- research-mab 06/30/1975 Blue Geyser is belching black clay 5-6’ hi. {earthquakes}
6214 26 Sep 1973 @ 1200 --- research-mab 09/26/1973 Blue Geyser does not appear to have had recent runoff across Porcelain Basin. Onyx (by its appearance) seems to have been ½ full for some time; all small (broken crust) springs in area of Onyx were dry (at time temps were taken in late a.m.)
6097 05 Sep 1973 @ 1200 --- research-mab 09/05/1973 P.B. at noon - Blue G. full, erupting – much runoff to NW
6094 04 Sep 1973 @ 1000 --- research-mab 09/04/1973 1000 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.
6110 03 Sep 1973 @ 1800 --- research-mab 09/03/1973 Blue Geyser full ←has apparently been quite active by the amount of runoff to the NW
6091 30 Aug 1973 @ 1800 --- research-mab 08/30/1973 Blue drained most of day (still erupting)
6102 28 Aug 1973 @ 1800 --- research-mab 08/28/1973 New feature & Blue both erupting in PM – This combined runoff from these almost inundates mid-portion of the Basin.
6087 26 Aug 1973 @ 1800 --- research-mab 08/26/1973 Blue geyser is drained at least halfway but shows eruptive activity.{no specific time or range}
6082 23 Aug 1973 @ 1800 --- research-mab 08/23/1973 Blue- was drained as low as we’ve seen it today
6056 18 Aug 1973 @ 1800 --- research-mab 08/18/1973 Blue Geyser has been erupting 5-10 ft last few days – appears to be a little higher than normal & very muddy today.
6035 14 Jul 1973 @ 0915 --- research-mab 07/14/1973 Blue geyser was dry at 9:15 and 11:30
5986 07 May 1973 @ 1800 --- research-mab 05/07/1973 Blue – had the most powerful & massive eruptions seen in the past three years with several bursts estimated to be 15 feet high and more than 15 feet wide.
5922 15 Mar 1973 @ 1500 --- research-mab 03/15/1973 After 3:00 PM Blue Geyser was observed to be playing strongly. Possibly the increased runoff which is relatively cooler by the time it reaches the pool of Constant could have temporarily flooded the geyser off as it has with Pinwheel Geyser.
5918 14 Mar 1973 @ 1145 14 Mar 1973 @ 1330 research-mab 03/14/1973 Blue: was observed in the process of draining at 1145, and at 1330 it started to overflow the pool rim when observations were suspended to return to Ebony. Yesterday Blue was observed to begin its eruption before the basin was completely full, while today it did not.
5920 13 Mar 1973 @ 1345 13 Mar 1973 @ 1600 research-mab 03/13/1973 Blue : pool drained approx 2 ½ feet, first observed inactive period since arriving (March 7). From the dry runoff channels it appears that the geyser had been dormant for at least 1-2 hours when noticed at 1:45.
6426 19 Aug 1972 @ 0815 --- research-mab 08/19/1972 Blue G. - Almost completely drained at 8:15
6502 15 May 1972 @ 1800 --- research-mab 05/15/1972 Blue geyser – erupting up to 10’ have not noticed it down 199º {during day - no specific time}
7503 18 Jun 1969 @ 1200 --- research-mab 06/18/1969 Blue playing most of the am.
7356 20 Sep 1967 @ 1800 --- research-mab 09/20/1967 Water level in Blue dropped about 2 ft in 10 minutes after an eruption. {not a specific eruption time}
7382 01 Jul 1967 @ 1200 --- research-mab 07/01/1967 Blue No water, all AM.
7380 30 Jun 1967 @ 1600 30 Jun 1967 @ 1745 research-mab 06/30/1967 Blue 4:00 water out 5:15 water back, not playing. 5:45 water dropping.
7381 30 Jun 1967 @ 0900 --- research-mab 06/30/1967 June 30 Blue No water 0900
7383 23 Jun 1967 @ 1800 --- research-mab 06/23/1967 Blue June 23 The water is down 4 feet. {no specific time}
7126 18 Jul 1966 @ 0830 --- research-mab 07/18/1966 Blue – Finished an eruption not too long before 8:30 am.
7121 17 Jul 1966 @ 0815 --- research-mab 07/17/1966 Blue Quit erupting at 8:15a
7117 15 Jul 1966 @ 1605 --- research-mab 07/15/1966 Blue eruption at 4:05p Hasn’t been going long.
6904 01 Jul 1965 @ 0800 --- research-mab 07/01/1965 Blue – Erupting had stopped sometime during the night.
6876 14 Jun 1965 @ 1800 --- research-mab 06/14/1965 Blue – Did not erupt today.
6865 06 Jun 1965 @ 1800 --- research-mab 06/06/1965 Blue – erupted most of the day.
No attachments for this geyser.
Baseline does not exist.


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