Last Known Eruption
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Latest Eruptions

Interval Statistics

Not enough entries to compute statistics.

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
11931 23 Jun 2019 @ 1800 --- Tom C. Down a little over 1' at 1800.
11876 19 Jun 2019 @ 0650 --- cb Cistern Spring is down 12 - 18" below overflow.
11851 17 Jun 2019 @ 0823 --- udo Full and overflowing strongly in all directions. Normal boil. Still in heavy overflow 1152
11833 16 Jun 2019 @ 1537 --- cb No water visable, no steam, no sounds.
11819 16 Jun 2019 @ 0820 --- cb Cistern Spring has water just barely visable in the bottom of the crater. It is lightly steaming. No gurgling/ boiling sounds. 0941 no visable water, no steam, no sounds.
11790 14 Jun 2019 @ 1145 --- cb Cistern Spring is in overflow. it's a clear beautiful turquoise blue color with a 2 point boil.
11767 13 Jun 2019 @ 1452 --- CrisG water well visible with heavy rolling boil. Mike Keller from Geology dept on site placing monitoring devices nearby. He states water has risen about 2 meters in the past couple of hours.
11766 13 Jun 2019 @ 1305 --- CrisG Small amount of water visible at the bottom of the pool. Pool was completely drained on my first walk through at 0800.
11760 13 Jun 2019 @ 0800 --- bbev ~19 hrs. post SB eruption. Cistern drained, no sound no steam.
11732 11 Jun 2019 @ 1652 --- Polly Vigorous boil in center. Overflowing in right front, with some light overflow in other areas.
11709 10 Jun 2019 @ 1555 10 Jun 2019 @ 1557 Polly A little overflow on the back left & front right sides. Boil was fairly vigorous at times.
11666 08 Jun 2019 @ 1738 --- bbev 1 day, 16 hrs post Steamboat: Cistern 20-24" below overflow, opalescent with moderate boil.
11672 08 Jun 2019 @ 1647 --- Bhoffer Refilling. About one foot below overflow. Bubbling gently in center.
11663 08 Jun 2019 @ 1515 --- novakg Water in recovery. Gentle boil. water just up to South log.
11644 08 Jun 2019 @ 0802 --- bbev Cistern has a vigorous boil just visible from the deck above, approximately 4-5 ft below the rim of the inner tube.
11631 07 Jun 2019 @ 1800 --- bbev ~16.75 hours post SB eruption. Cistern totally drained, no sound, no water, no steam.
11505 02 Jun 2019 @ 1200 --- cb Down another 2' since 1130. Water is at the top of the stick at the entrance to "cave".
11498 02 Jun 2019 @ 0800 02 Jun 2019 @ 1000 cb CS pool has dropped 2.5 feet in the last 2 hours. photos available if needed. * SB quieted down markedly in this same time frame.
11484 01 Jun 2019 @ 1145 --- udo Overflowing nicely in all directions. 3 foot diameter boil doming max 6 inches. Opaque, not clear.
11467 01 Jun 2019 @ 0835 --- cb Cistern Spring pool is low but in overflow. CS pool is VERY steamy again this morning. I am unable to see the boil but can hear it. Opalescent blue in color.
11458 31 May 2019 @ 1715 --- cb Cistern Spring is a opalescent blue color. Still very steamy and hard to see the boil except when the breeze is out of the north. In overflow.
11452 31 May 2019 @ 1138 31 May 2019 @ 1140 ge From an untrained eye, pool is full and overflowing, with a good boil.
11449 31 May 2019 @ 0824 31 May 2019 @ 0828 cb Cistern Spring is to steamy to see into the majority of the pool but edges show a color to beautiful blue green color. Audible boil and in overflow.
11424 30 May 2019 @ 0817 --- bbev lighty overflowing to the west, clear, soft boil.
11387 27 May 2019 @ 1900 --- Kyle color is brown. pool was drowned by Steamboat runoff. pool already 2-5 cm below below overflow
11379 27 May 2019 @ 1023 --- JeffL Pretty vigorous boil in the middle. Looks like its cleared up some from yesterday
11385 27 May 2019 @ 0515 --- Kyle in overflow to SE SW and W. milky colloidal blue color
11355 26 May 2019 @ 1033 --- ypcaribou Still a wee bit below overflow and colloidal/nit clear
11353 26 May 2019 @ 0622 --- ypcaribou Just a wee bit below overflow, blue, and somewhat colloidal-looking (not clear)
11344 24 May 2019 @ 2053 --- Kyle in steady overflow gentle boil in center
11338 24 May 2019 @ 0630 --- Kyle full and overflowing.gentle boil in center
11309 22 May 2019 @ 1556 --- cb Pool is high and just barely in overflow. Catch basins on the NE and S sides are just starting to fill. Medium boil. 33°and lightly snowing.
11305 22 May 2019 @ 0643 --- Kyle refilling. approximately 4-5 ft below rim. constant boiling send splashing in crater
11302 21 May 2019 @ 1715 --- bbev Cistern Spring has no activity. No audible gurgling, no visible water, no steam.
11281 21 May 2019 @ 0935 --- Kyle No water is visible in cistern. Quiet.
11398 21 May 2019 @ 0911 --- Ben VL Empty and quiet.
11304 20 May 2019 @ 2008 --- Kyle Cistern down 8-10 inches per photo
11258 17 May 2019 @ 1340 --- cb Cistern Spring was to steamy to see clearly but was obviously overflowing.
11248 16 May 2019 @ 1241 --- bbev Full and overflowing in all directions, mostly clear and boiling.
11244 15 May 2019 @ 0915 --- cb Cistern Spring is refilling and water level is 6'' below the rim of the inner tube. It has a 2 point vigorous boil.
11240 14 May 2019 @ 1655 --- cb Cistern Spring has drained. no visible water, no sounds and no steam (65°)
11238 14 May 2019 @ 0915 14 May 2019 @ 0930 cb Cistern Spring was down 3' from the rim of the inner tube and no boil.
11221 12 May 2019 @ 0800 --- cb Cistern Spring is in overflow with a 2 point vigorous boil.
11203 10 May 2019 @ 1020 --- bbev Cistern boiling, a little milky, and overflowing out west side, very little overflow to the east.
11192 09 May 2019 @ 1125 --- cb Cistern Spring has no visible water, no audible churning sounds and the faintest of steam.
11188 08 May 2019 @ 1105 08 May 2019 @ 1627 cb Cistern Spring is down 18" from overflow @ 1135. down 2.5' @ 1500. down 3.5' - 4' @ 1625.
11183 07 May 2019 @ 1655 --- cb Cistern Spring is barely in overflow. scalloped edges on the rim are visable. Overflow areas on all side are just moist.
11173 05 May 2019 @ 0912 --- bbev Cistern is full, clear, boiling in two areas in center of pool. Overflowing in all directions as well as lightly to the east into muddy pool.
11165 04 May 2019 @ 1600 04 May 2019 @ 1832 cb Cistern Spring is filling. water level is about 1.5' below the rim of the inner tube and has a vigorous boil. @1830 Cistern Spring has Come up 3' in 2.5 hours. filling quickly!
11156 03 May 2019 @ 1907 --- cb Cistern Spring is empty. No steam or audible water sounds.
11150 03 May 2019 @ 0745 03 May 2019 @ 1000 bbev Cistern down 20-24", clear, no bubbles, no boil, little steam. 0945, Cistern dropped 4-6" since first observed this morning. Still no boil, bubble or steam.
11140 01 May 2019 @ 2041 --- ypcaribou Full and blue with continuous roiling. Left side not in overflow to the muddy catch pool.
11231 30 Apr 2019 @ 1345 --- Polly Cistern Spring is in overflow to the right and the right back. There is also a little overflow in the left back. I can hear small boils.
11114 28 Apr 2019 @ 1150 --- cb Full, in overflow, clear turquoise blue green in color with a fairly vigorous boil
11099 27 Apr 2019 @ 0848 --- bbev Cistern lightly steaming and can barely hear water deep in the well.
11108 27 Apr 2019 @ 0750 --- ypcaribou Fully drained. Low gurgle audible deep inside. Steaming a smidge.
11089 26 Apr 2019 @ 1245 --- cb Cistern Spring is 4' below the inner tube and the pool is clear and blue. It has some gentle bubbles on the west side. @1315 Cistern Spring pool has dropped another 4".
11039 21 Apr 2019 @ 1530 --- JeffL in overflow, decent boiling in center. nice and clear
11002 19 Apr 2019 @ 0955 19 Apr 2019 @ 1025 ypcaribou Not quite in overflow. Clear blue and bubbly.
10687 29 Oct 2018 @ 1449 --- udo too steamy to see vent. very quiet but overflowing in all directions
10623 19 Oct 2018 @ 1243 --- MAB good overflow in all directions - including into the muddy pool. Two point moderate boil
10618 18 Oct 2018 @ 1330 --- MAB Steamy photos taken this afternoon sent to me show Cistern barely spilling over in two spots - south and west. Ridges on east shelf still visible. Couldn't see the center to report boil. Muddy area to NE dry.
10612 15 Oct 2018 @ 1550 --- Suzanne No longer in overflow, slight boiling, water level just below the rim.
10604 13 Oct 2018 @ 0830 --- Suzanne overflowing with small boil in center
10594 08 Oct 2018 @ 1700 --- Tom C. Down about 1'. Flat & calm.
10557 04 Oct 2018 @ 1302 --- bbev Overflowing into muddy pool.
10538 03 Oct 2018 @ 1250 --- cb Not at overflow level. 12+" Below overflow and is a muddy, greenish color with a 2 vent boil.
10531 02 Oct 2018 @ 1744 --- bbev Just barely able to see water in bottom of pool, regular splashing visible. Pool is speckled white/brown from SB runoff.
10530 02 Oct 2018 @ 1255 --- bbev No water visible in CS but can hear boiling deep in pool.
10521 01 Oct 2018 @ 1925 --- bbev Cistern drained, no sight or sound of any water.
10514 01 Oct 2018 @ 1025 --- bbev Cistern drained to 4-6" below rim of inner tube. Water is cloudy, possibly due to heavy SB runoff that was flowing into it last night.
10481 27 Sep 2018 @ 0944 --- cb Cistern Spring is in overflow with a trickle into the muddy pool
10473 26 Sep 2018 @ 1835 --- bbev Cistern Springs is 4-6" below rim of inner tube, maybe 4.5-5' below overflow.
10470 26 Sep 2018 @ 1150 --- bbev Cistern Spring is at a roiling boil 5-5.5' below rim of inner tube.
10449 25 Sep 2018 @ 1825 --- cb Cistern Spring has no visible water but I can hear a boil and splashing deep in the crater. a bit steamy too.
10446 25 Sep 2018 @ 1204 --- bbev Empty and quiet, no sound or sight of water, very little steam.
10429 25 Sep 2018 @ 1010 --- cb Cistern is empty with a small amount of steam coming from deep within the crater. (water not visible)
10334 21 Sep 2018 @ 1920 --- cb Cistern Spring has better overflow from this mornings observation.
10321 21 Sep 2018 @ 0757 --- bbev Cistern is overflowing, but not as heavily as in past few SB intervals, only slightly flowing into muddy pool.
10312 20 Sep 2018 @ 1727 --- cb Cistern Spring is overflowing but not into the muddy pool. There is a 3 vent boil in the center and it's blue in color.
10307 20 Sep 2018 @ 0847 --- cb Cistern Spring pool is high and is in overflow. Color is milky blue with a mild boil.
10305 19 Sep 2018 @ 1820 --- cb Cistern Spring is approximately 2.5' below overflow and is milky blue with a 2' diameter boil.
10309 19 Sep 2018 @ 1155 --- bbev Cistern Springs up from this morning, 3-3.5" below rim of inner tube, vigorously boiling, water appears milky.
10295 19 Sep 2018 @ 0804 --- bbev Cistern Springs just refilling, grey, boiling water can just be seen from lower boardwalk, 5-6' below rim of inner "tube".
10291 18 Sep 2018 @ 1900 --- cb Cistern Spring is still empty. No sign of water. (61°) No audible bubbling sounds, no steam, nada. . .
10282 18 Sep 2018 @ 0948 --- cb Cistern Spring has drained. no water or steam visible (32°)
10368 17 Sep 2018 @ 1226 --- Siegmund ~5cm below overflow, calm.
10268 17 Sep 2018 @ 1100 --- udo The following comments may only be used for personal, private, non-commercial purposes by registered users of Geyser Times and may not be reproduced, rebroadcast, or paraphrased in any form on any media without my written consent. Down about 1 inch below overflow.
10367 17 Sep 2018 @ 1013 17 Sep 2018 @ 1025 Siegmund Still overflowing (barely)
10211 15 Sep 2018 @ 1140 --- cb Cistern Spring is overflowing with a 3' diameter boil and is a milky blue color. No water at the bridge.
10203 14 Sep 2018 @ 1334 --- bbev Cistern Springs overflowing from all sides, including into muddy pool.
10194 14 Sep 2018 @ 0944 --- cb Cistern Spring has not reached overflow yet. water level is about 6 - 8" below overflow. CS pool is very steamy this morning. (40°) I can't hear or see any boil.
10201 14 Sep 2018 @ 0800 --- bbev Cistern Springs 12-14" below overflow, light boil in middle of clear pool.
10186 13 Sep 2018 @ 1839 --- cb Cistern Spring is filling. Water level is about 5' below the inner tube. (just visible) It has a vigorous roiling boil and is a muddy gray color.
10179 13 Sep 2018 @ 1215 --- cb Cistern Spring has drained and is empty with just a thin wisp of steam
10171 12 Sep 2018 @ 1834 --- bbev Down 20-24" below overflow, clear, no bubbles at all.
10167 12 Sep 2018 @ 1209 --- bbev 8-12" below overflow. Some bubbles.
10156 11 Sep 2018 @ 1901 --- bbev Cistern was still overflowing heavily, apparently unaffected by Steamboats earlier strong minors, which has been the case in at least the past 2 eruptions.
10142 10 Sep 2018 @ 1830 --- bbev Cistern Springs continues heavy overflow, gently boiling in center of somewhat milky, blue pool.
10131 10 Sep 2018 @ 0812 --- bbev Overflowing from all sides. Reliable report is that Cistern was 4" below overflow at about 1500 yesterday.
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