Last Known Eruption
3y 64d 16h 34m ago

Interval Statistics

Interval Count51
Min2m
Max20y 36d 23h 5m
Mean286d 16h 59m
Median23h 8m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
37506 10 Oct 2024 @ 1316 --- SantaFe108 1.5' below rock, bubbling all over the place. Sidewall Vent quietly emitting steam.
37349 03 Oct 2024 @ 1014 --- SantaFe108 Sidewall Vent gently forcing steam, water level ~2ft below rock and bubbling from multiple spots.
35349 19 Jun 2024 @ 1144 --- Craigmon99 Boiling lazily
35350 19 Jun 2024 @ 1144 --- Craigmon99 Boiling lazily
35071 10 Jun 2024 @ 0931 --- SantaFe108 Low, boulder in middle almost entirely exposed. Sidewall vent gently forcing steam.
29047 22 Oct 2023 @ 1305 --- SantaFe108 Rippling and bubbling all over the pool. Murky gray color.
28987 21 Oct 2023 @ 1605 --- JR Gentle steam
28909 20 Oct 2023 @ 1106 --- MAB agitated ripples from bubbles in many spots - too steamy to really see color
28850 17 Oct 2023 @ 1607 --- MAB murky
29094 01 Aug 2022 @ 1200 --- research-mab 8/01/2022 - no time noted - Hurricane Vent turning blue
22855 26 Jul 2022 @ 1154 --- cb steamy but no activity. water at the base is at the same level its been for a few weeks
29085 16 Jul 2022 @ 1200 --- research-mab no time noted - 7/16 Hurricane Vent and Scummy Pool don’t seem as dark brown. Maybe changing color
22528 12 Jul 2022 @ 1609 --- cb pool is ~3" higher
22353 06 Jul 2022 @ 1011 --- cb Has more water in the pool than ive seen lately. The dry caked mud at the bottom of the pool is partially covered in water and it has areas beneath the vent and on the edge toward Congress that have a small roiling boil. Also the color milk chocolate.
22167 27 Jun 2022 @ 1116 --- MAB water level in pool dropped quite a bit exposing deep mud cracked areas on E & W ends of pool
29073 18 Jun 2022 @ 1200 --- research-mab 6/18 Post Flood: - no time noted - Hurricane Vent water level super low & muddy!
21210 06 May 2022 @ 1140 --- MAB some chunks have sloughed off of the shoulder vent - will compare photos from previous years - haven't yet stood there during its cycle to see if more or less water is spritzing out than other years but now am interested and will do that
16493 30 Oct 2020 @ 1459 --- steve The side vent is steaming with no water.
29147 16 Jun 2020 @ 1129 --- research-mab According to The Geysers of Yellowstone 5th edition, “Hurricane Sidewall Vent: has been noted to spray several feet high since 2015. This was my first time witnessing it! 11:29 AM – J McIlwain
14600 11 Jun 2020 @ 1645 --- cb Vent is gently steaming. pool is low, the rock in the pool is 1.5' exposed and water is a clear blue color
11017 20 Apr 2019 @ 0945 20 Apr 2019 @ 0950 MAB Very forceful water sprays and roaring steam from the north shoulder vent, moreso than last year, and in series. Water seen 945, 947, 949, and brief at 950. The crack is enlarged more to the east.
29569 05 Jun 2016 @ 1200 --- research-mab 6/5/2016 - no time - 2-3 ft “eruption” plus a lot of & steam and noise from a vent on the southwest corner of Hurricane Vent
29458 08 Aug 2012 @ 1345 --- research-mab 8/8/2012 Hurricane Steam Vent loud, visible steam that died away and became quiet as I watched at 1345
29818 18 Aug 2004 @ 1200 --- research-mab 9/18/2004 Disturbance Day! - no time noted - This morning on rove, I noticed some disturbance behavior! - Hurricane Vent is turbid
29961 29 Aug 1998 @ 1408 29 Aug 1998 @ 1439 research-mab 8/29/1998 Hurricane Vent 208 210 214 239 – may have been more but had to keep walk moving
29959 21 Aug 1998 @ 1517 --- research-mab 8/21/1998 Hurricane Vent – 1517 roaring noise from 3 vents
29958 21 Aug 1998 @ 1426 21 Aug 1998 @ 1440 research-mab 8/21/1998 Hurricane Vent – 14:26. 14:28. 1431, 1433, 1436, 1440, (Rebecca saw)
29957 20 Aug 1998 @ 1840 --- research-mab 8/20 Hurricane Vent strong hissing/howling release from 3 vents at 640 p for about 1m
29956 15 Aug 1998 @ 1408 --- research-mab 8-15/1998 I saw Hurricane Vent erupt again today! It was at 208 pm – for 2 min. The process was the same as I mentioned earlier (back 5 pages) I was quite excited, just as before!
29955 16 Jul 1998 @ 1609 --- research-mab 7/16/1998 I saw Hurricane Vent erupt! For the first time this year at least for me. At 409pm for 1 min there was heavier steaming from vent on ledge NE of pool – it was roaring too then it began to get quieter and section of rock along that edge of the pool were wet and there was a wave and ripples moving across the pool from the direction of the vent.
29970 07 Jul 1997 @ 1200 --- research-mab 7/7/1997 - no time noted - Water in Hurricane Vent is low (~6-9 in)
30031 19 Jun 1996 @ 1200 --- research-mab 6/19/1996 - no time noted - Hurricane Vent seems inactive but Congress pool is the most active that I have seen.
30146 26 Sep 1995 @ 1200 --- research-mab 9/26/1995 - no times noted - A quick heads up to observe Hurricane Vents “backwards” eruptions. It is having a series of 2-5 eruptions about 2 minutes apart. I have not observed a closed interval between this series. It is a lot of fun to watch
30056 15 Jun 1995 @ 1200 --- research-mab 6/15/1995 - no time noted - New breakout by Hurricane – to west in duff near (dead) brown tree
30191 31 Aug 1994 @ 1200 --- research-mab 8/31/1994 - no time noted - After the Ledge eruption... Hurricane Vent has started an interesting eruptive pattern – first noticed Fri or Sat. There is a steam vent on the NE side of slope which will release a great amount of steam for 30 sec. After which water flows from a small 1” x 1/2” (?) square vent below the steamvent quite near the pool level. The rock around the water run off area is black in color – the water flows for 30 sec or so… Have seen series of eruptions & also single eruptions an hour or so apart.
30456 01 Sep 1992 @ 1030 --- research-mab 9/1/1992 Saw Hurricane Vent erupt & overflow ~ 10:30 am
30400 29 Jul 1992 @ 1515 --- research-mab 7/29/1992 - inferred time based on other entries - Also note that I saw my first activity from Hurricane Vent for this season – seems to be steam and water every three minutes
30314 26 Apr 1992 @ 1200 --- research-mab 4/26/1992 - no time noted - Hurricane Vent – quiet
30567 22 Jul 1991 @ 1200 --- research-mab 7/22/1991 - no time noted - Hurricane Vent int ~2½ min
30546 08 Jul 1991 @ 1200 --- research-mab 7/8/1991 - no time noted - Hurricane Vent seems peculiarly quiet.
30531 22 Jun 1991 @ 1200 --- research-mab 6/22/91 - no time noted - Hurricane Vent is still steaming them overflowing frequently ie ~ 3-5 min.
30508 16 May 1991 @ 1200 --- research-mab 5/16/1991 - no time noted - Hurricane Vent – same as usual
30687 27 Sep 1990 @ 1200 --- research-mab 9/27 - no time noted - Hurricane Vent – very heavy water phase and heavy sulfur crystal build up around the vents
30656 14 Aug 1990 @ 1200 --- research-mab 8-14: - no time noted - Today was my 1st observation seeing Hurricane Vent steaming without subsequently spewing water. Is this normal? {handwritten reply above - ‘I’ve seen it a couple of times without water – but I think it is rare!} - Another Hurricane Vent w/o water phase {added}
10863 23 Jun 1990 @ 1800 --- research-mab 6/23/1990 Hurricane vent not showing water flow after steam for first time that I’ve noticed.
30613 27 Apr 1990 @ 1200 --- research-mab 4/27/1990 - no time noted - Hurricane Vent appears as frequent and interesting as always.
10860 16 Sep 1989 @ 1800 --- research-mab 9/16/1989 New fresh surface sulfur deposits at Crater Springs & Hurricane Vent.
30736 07 Sep 1989 @ 1441 --- research-mab 9/7/1989 - Hurricane Vent- bubbling in pool more intense and all across. 1441 steam eruption, 30 sec later water, end 1442. 1444 steam 1444:30 water. Water phase is longer and heavier than usual. - Colloidal Pool – very muddy at surface with intense bubbling.
10862 06 Aug 1988 @ 1800 --- research-mab 8/6/1988 Hurricane Vent In Porcelain Basin, Hurricane Vent has an upside down (for a geyser, that is) eruption. It’s eruption is preceded by increased steaming from the fumeroles to the north. After several minutes of increased steam, water overflows from a horizontal crack in the rock, which is about one foot long and about 1½ feet above the water level, on the north side. The water flows out for about 1-2 minutes.
30806 03 Jul 1988 @ 1200 --- research-mab 7/3/1988 - no time noted - Hurricane Vent has dropped about 6” in water level. It continues to have “water fall” eruptions out of the horizontal crack on the north west side of the rock wall.
10861 02 Jul 1988 @ 1800 --- research-mab 7/2/1988 Observations: Hurricane Vent has dropped about 6” in water level. It continues to have “water fall” eruptions out of the horizontal crack on the north west side of the rock wall.
31047 19 Feb 1983 @ 1200 --- research-mab 2/19/1983 - no time noted - Hurricane Vent 140º slightly turbid & calm
31202 15 Jan 1982 @ 1200 --- research-mab January 15th, 1982 - no time noted -Hurricane Vent – 146º another low temp. This is a hard one to take a temp on in the winter so again it may be wrong. Blue-green slightly turbid calm H20 = = Colloidal Pool 178º bright blue slightly turbid & calm H20
31605 11 Dec 1981 @ 1200 --- research-mab Dec 11 1981 - no time noted - Hurricane Vent 140º grey/blue turbid water calm – temp is probably low since the ground was muddy and I wasn’t going to stick around long. = Colloidal Pool 168º slightly turbid blue/green and calm
31426 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.
31823 29 May 1981 @ 1200 --- research-mab 5-29-81 - no time noted - Water levels in Colloidal & Hurricane ↓75cm.
31816 30 Sep 1980 @ 1200 --- research-mab 9/30/80 - no time noted - Colloidal Pool + Hurricane Vent were muddy “swiss cheesy” which surprised me.
31755 09 Sep 1980 @ 1200 --- research-mab Tuesday Sept 9 1980 - no time noted - Hurricane Vent – turbid, grey green, calm. No overflow 164° = Colloidal Pool - blue, turbid water, overflowing 170°
31615 08 Jun 1980 @ 1200 --- research-mab June 8 1980 - no time noted - Hurricane Vent – blue-grey, waterfall appears to have been inactive for a long time. 142ºF – calm. = Colloidal Pool – lovely aquamarine color, calm 188ºF
32029 14 Oct 1979 @ 1200 --- research-mab October 14 1979 - no time noted - Algae is beginning to grow again in the runoff channels of Porcelain basin. Colloidal Pool and Hurricane Vent have turned blue once again.
31997 27 Sep 1979 @ 1200 --- research-mab September 27 1979 - no time noted - Hurricane Vent – 166ºF- calm, pale blue milky water = Colloidal Pool – 192ºF – boiling to 1 foot. Opaque greyish yellow-green color
10857 20 Sep 1979 @ 1800 --- research-mab 09/20/1979 Hurricane Vent – The floating sign has been removed, Hmm? Anyone counted to see if all our maintenance staff is alive. Hurricane Vent appears unchanged at 169ºF. Waterfall not erupting at observation. = Colloidal Pool – muddy-brown grey boiling in three locations to one foot. All trace of its beautiful blue color gone. 192ºF
31918 03 Sep 1979 @ 1200 --- research-mab Sept 3 1979 - no time noted - Colloidal Pool boiling vigorously, cloudy water. Hurahh! It finally lived up to its name this summer.
10856 23 Aug 1979 @ 1800 --- research-mab 08/23/1979 Nice waterfall in Hurricane Vent today at 1200 pm
31880 28 Jul 1979 @ 1200 --- research-mab July 28 1979 - no time noted - Hurricane Vent 160ºF (Steamvent beside Hurricane Vent -western side – 200ºF) Waterfall starting again along horizontal crack on east side. = Colloidal Pool 152º
10855 09 Sep 1978 @ 1800 --- research-mab 09/09/1978 Hurricane Vent – Grey, milky water – waterfall was active, dropping 1 foot to water level. Pool temp 156ºF
32043 25 Mar 1978 @ 1200 --- research-mab March 25 1978 - no time noted - Hurricane Vent – low water level, little steam
10853 31 Aug 1977 @ 1800 --- research-mab 08/31/1977 Hurricane Vent’s level has declined 8-10”
32292 28 Jul 1977 @ 1200 --- research-mab 07/28/1977 - no time noted - Hurricane Vent – falls in on again off again cycle 152º = Colloidal Pool 182°
10854 07 Jul 1977 @ 1200 --- research-mab 07/07/1977 - no time - Hurricane Vent’s water fall is back.
10850 17 Sep 1976 @ 1800 --- research-mab 09/17/1976 Hurricane Vent – the waterfall is pouring in much larger amounts of water. However, the level of the pool remains unchanged.
32560 10 Sep 1976 @ 1200 --- research-mab 09/10/1976 - no time noted - Hurricane Vent – water level down ~3” = Colloidal Pool – has returned to its pre- Aug 31 activity
10851 04 Sep 1976 @ 1200 --- research-mab 09/04/1976 - no time - There is elemental sulphur being deposited around the steam vents above Hurricane Vent = At Colloidal, only the main boiling spot remains active. The other 3 are seen occasionally, but only go 2-3’ high.
10852 01 Sep 1976 @ 1200 --- research-mab 09/01/1976- no time noted - Hurricane Vent – water level is being raised by increased output from the water fall issuing from the crack in the wall.
32509 31 Aug 1976 @ 1200 --- research-mab 08/31/1976 - no time noted - We are for sure in the grip of an end-of-the-season change! Porc Basin has gone bananas! Hurricane Vent is a light brown, no increase in activity. = Colloidal Pool has gone crazy. There are 3-4 boiling spots, all of which are constantly going. The main one is “erupting” as high as 10 feet! This causes large waves to surge over the pool’s edge & under the boardwalk.
10848 14 Jul 1976 @ 1800 --- research-mab 07/14/1976 At Hurricane Vent, the little fumarole is much quieter of late. Water fall continues.
10849 19 Jun 1976 @ 1800 --- research-mab 06/19/1976 Hurricane Vent – first waterfall I have seen in a hot spring. The cracks in the Northeast side of the vent have enlarged over the winter. Water appears to be constantly flowing from a crack in the vent, dropping two feet to the pool at the base of the vent.
10843 18 Aug 1975 @ 1800 --- research-mab 08/18/1975 Hurricane Vent – pool at bottom of vent is beginning to bottom out.
10844 06 Aug 1975 @ 1800 --- research-mab 08/06/1975 Hurricane Vent is continuing to drop. The level of the pool in Hurricane Vent [h]as been dropping since the earthquake of June 30th, 1975
32616 06 Jul 1975 @ 1200 --- research-mab 07/06/1975 - no time noted - Nuphar Lake down 1 ft along with Hurricane Vent & Congress Pool
10845 05 Jul 1975 @ 1800 --- research-mab 07/05/1975 Hurricane Vent - - the pool in the vent is dropping or has dropped about 10”
10846 30 Jun 1975 @ 1733 --- research-mab 06/30/1975 5:33 Hurricane Vent has refilled to normal level
10847 30 Jun 1975 @ 1325 --- research-mab 06/30/1975 New fractures in north side of Hurricane Vent. Hurricane Vent is draining 1:25 pm. Down about 2 ft.
10842 07 Sep 1974 @ 1800 --- research-mab 09/07/1974 Hurricane Vent – water level has dropped 3-4”
10841 12 Apr 1973 @ 1800 --- research-mab 04/12/1973 Hurricane Vent 180° – fumaroles near edge puffing vents along joint on NE side 200°
10858 15 May 1972 @ 1800 --- research-mab 05/15/1972 Hurricane Vent – blue gray water, no bubbling, sulfur crystals have vanished from steam vents {from last year} 169º
10859 25 Sep 1971 @ 1800 --- research-mab 09/25/1971 Hurricane Vent has a line of 1 inch high bright yellow sulphur crystals being deposited from steam vents near the top NE edge of the Hurricane pit. In that the crystals are long, relatively separate from each other, and are in sharp contrast to the brownish purple soil below, I can honestly say that this is one of the most beautiful sights that I have seen in the basin all summer. (RH)
32940 11 Sep 1971 @ 1800 --- research-mab 09/11/1971 - {afternoon temps 1430-1900} - Hurricane Vent 172° - no visual change last 6 weeks = Colloidal 194°
33204 31 Jul 1971 @ 1200 --- research-mab July 31 1971 - no time - Big change – water is a gray muddy color- a little more steam activity at the north side. Water 85C 185F
33206 26 Jun 1969 @ 1200 --- research-mab 1969- June 26 - no time - Water mildly gray to green in color. No bubbling action. 160ºF
10839 16 Oct 1964 @ 1800 --- research-mab 10/16/1964 Hurricane is quiet, gray & full.
10838 09 Oct 1964 @ 1800 --- research-mab 10/09/1964 Hurricane is very high at 185º. Seems as though there is a tunnel-like connection between Hurricane & Colloidal. The wave action of Colloidal has corresponding splashes at the north edge of the Hurricane.
33088 09 Oct 1964 @ 1200 --- research-mab 10/09/1964 - no time - Hurricane (Lewis temp) 169° - Oct 9 - 185° (high water)
10837 05 Oct 1964 @ 1530 05 Oct 1964 @ 1630 research-mab 10/05/1964 Porcelain Basin observed from 3:30 pm to 4:30 pm Hurricane has gained back its original level (pre-Sept 25) & maybe more. It is murky gray.
10836 04 Oct 1964 @ 1800 --- research-mab 10/04/1964 Hurricane Vent has gained a foot or so of water as has the small ex-mudpot just east of Colloidal Pool.
33591 03 Oct 1964 @ 1801 --- research-mab - no time noted - Hurricane Vent lost water at the same rate and time with Colloidal and was completely dry on October 3. It began to gain water on the 4th and was full again on the 5th. When the water was drained, tunnel could be seen which probably connects with Colloidal.
10835 03 Oct 1964 @ 1800 --- research-mab 10/03/1964 Hurricane Vent is completely dry.
10840 30 Sep 1964 @ 1800 --- research-mab 09/30/1964 Big Colloidal & Hurricane Vent have gained but not to original level.
10834 27 Sep 1964 @ 1800 --- research-mab 09/27/1964 Hurricane Vent is almost dry and has dropped at least 2 feet. {generic time}
10833 26 Sep 1964 @ 1800 --- research-mab 09/26/1964 Hurricane Vent’s water level remains lowered.{generic time}
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Baseline does not exist.