Last Known Eruption
4d 4h 20m ago

Latest Eruptions

Eruption DurationInterval
17 Sep 2018 @ 0936 maj1h 15m 5d 5h 13m
12 Sep 2018 @ 0423 maj~55m 4d 18h 3m
07 Sep 2018 @ 1020 maj43m 8s 5d 10h 59m
01 Sep 2018 @ 2321 maj5d 1h 51m
27 Aug 2018 @ 2130 maj5d 9h 47m
22 Aug 2018 @ 1143 maj14m 17d 21h 33m
04 Aug 2018 @ 1410 maj14d 15h 34m
20 Jul 2018 @ 2236 maj22m 14d 8h 59m
06 Jul 2018 @ 1337 maj32m 20d 20h 42m
15 Jun 2018 @ 1655 maj37m 4d 15h 49m
11 Jun 2018 @ 0106 maj6d 16h 2m
04 Jun 2018 @ 0904 maj30m 7d 13h 49m
27 May 2018 @ 1915 maj19m 7d 21h 27m
19 May 2018 @ 2148 maj6d 17h 57m
13 May 2018 @ 0351 E maj8d 4h 36m
04 May 2018 @ 2315 E maj7d 16h 45m
27 Apr 2018 @ 0630 E maj7d 14h 4m
19 Apr 2018 @ 1626 E maj35d 11h 5m
15 Mar 2018 @ 0521 E maj3y 193d 6h 38m
03 Sep 2014 @ 2243 E maj23m 1y 34d 3h 13m
31 Jul 2013 @ 1930 E maj6y 162d 2h 30m
21 Feb 2007 @ 16001y 274d 2h 19m
23 May 2005 @ 1441 maj1y 213d 18h 15m
22 Oct 2003 @ 2026 maj178d 16h 32m
27 Apr 2003 @ 0354 E maj32d 2h 22m
26 Mar 2003 @ 0032 E maj193d 3h 12m
13 Sep 2002 @ 2220 maj140d 20m
26 Apr 2002 @ 2200 ie maj1y 359d 16h 0m
02 May 2000 @ 0600 ie maj8y 214d 14h 11m
02 Oct 1991 @ 1549 maj1y 120d 7h 41m
04 Jun 1990 @ 0808237d 12h 31m
09 Oct 1989 @ 1937 A157d 8h 33m
05 May 1989 @ 1104 maj12m 109d 20h 19m
15 Jan 1989 @ 1345 A maj4y 112d 10m
26 Sep 1984 @ 1435 maj20m 82d 5h 34m
06 Jul 1984 @ 0901 maj8m 23d 9h 11m
12 Jun 1984 @ 2350 maj~19m 19d 19h 5m
24 May 1984 @ 0445 A69d 5h 45m
15 Mar 1984 @ 2200 A93d 13h 0m
13 Dec 1983 @ 0900 A106d 20h 2m
28 Aug 1983 @ 135865d 18h 33m
23 Jun 1983 @ 192516m 47d 19h 25m
07 May 1983 @ 0000 A20d 6h 3m
16 Apr 1983 @ 165714d 16h 57m
02 Apr 1983 @ 0000 A9d 9h 20m
23 Mar 1983 @ 144010d 14h 40m
13 Mar 1983 @ 0000 A12d 0m
01 Mar 1983 @ 0000 A24d 13h 5m
04 Feb 1983 @ 105515d 16h 55m
19 Jan 1983 @ 1800 ie18d 18h 0m
01 Jan 1983 @ 0000 A24d 4h 0m
07 Dec 1982 @ 2000 A24d 10h 0m
13 Nov 1982 @ 1000 A15d 11h 0m
29 Oct 1982 @ 0000 A19d 4h 0m
09 Oct 1982 @ 2000 A19d 9h 23m
20 Sep 1982 @ 103715m 13d 23h 1m
06 Sep 1982 @ 113633d 2h 33m
04 Aug 1982 @ 0903 maj43d 6h 51m
22 Jun 1982 @ 021213d 18h 22m
08 Jun 1982 @ 07506d 20h 36m
01 Jun 1982 @ 111411d 23h 20m
20 May 1982 @ 1154 maj10d 18h 54m
09 May 1982 @ 17004d 19h 43m
04 May 1982 @ 21176d 9h 17m
28 Apr 1982 @ 1200 A4d 6h 43m
24 Apr 1982 @ 04178d 4h 17m
16 Apr 1982 @ 0000 A26d 0m
21 Mar 1982 @ 0000 A10d 15h 0m
10 Mar 1982 @ 0900 A7d 9h 0m
03 Mar 1982 @ 0000 A9d 5h 0m
21 Feb 1982 @ 1900 A10d 19h 0m
11 Feb 1982 @ 0000 A28d 7h 0m
13 Jan 1982 @ 1700 A2y 210d 2h 34m
18 Jun 1979 @ 1526299d 7h 23m
23 Aug 1978 @ 0803 maj147d 20h 33m
28 Mar 1978 @ 10309y 216d 9h 20m
26 Aug 1968 @ 021083d 19h 5m
03 Jun 1968 @ 070541d 17h 27m
22 Apr 1968 @ 1238311d 6h 58m
16 Jun 1967 @ 064028d 6h 40m
19 May 1967 @ 0000 A11d 0m
08 May 1967 @ 0000 A11d 23h 0m
26 Apr 1967 @ 0000 A37d 0m
20 Mar 1967 @ 0000 ?144d 2h 10m
26 Oct 1966 @ 225077d 3h 14m
10 Aug 1966 @ 193652d 8h 54m
19 Jun 1966 @ 104289d 9h 42m
22 Mar 1966 @ 000017d 6h 0m
04 Mar 1966 @ 1800 A27d 2h 39m
05 Feb 1966 @ 152177d 15h 21m
20 Nov 1965 @ 000069d 3h 11m
11 Sep 1965 @ 2149 ns13d 21h 34m
29 Aug 1965 @ 001549d 2h 45m
10 Jul 1965 @ 213027d 1h 50m
13 Jun 1965 @ 19409d 10h 12m
04 Jun 1965 @ 09288d 22h 13m
26 May 1965 @ 11157d 15h 50m
18 May 1965 @ 192510d 22h 25m
07 May 1965 @ 2100 A9d 1h 0m
28 Apr 1965 @ 2000 A14d 3h 0m

Interval Statistics

Interval Count100
Min4d 6h 43m
Max9y 216d 9h 20m
Mean195d 3h 17m
Median20d 13h 22m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10320 21 Sep 2018 @ 0742 21 Sep 2018 @ 0805 bbev Soft rumbling and wispy jetting from NV, some splashing from SV 5' and runoff has trickle of water. 0748 20' wispy jet from NV, some small splashes from SV. 0754 more small jetting from both vents. Trench remains empty from previous eruption, with clear trickle just beginning to fill it with water. Runoff below bridge is dry. Cistern overflowing, but only barely into muddy pool.
10311 20 Sep 2018 @ 1700 20 Sep 2018 @ 1758 cb platform is dry. Very wispy NV splashes maybe 4 - 7' tall @ 1711 and 1714, 1736, 1740, 1745, 1748, 1756 otherwise both NV and SV are just gently steaming. 1 SV wispy 2' splash at 1749. All runoff channels are dry. 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.
10306 20 Sep 2018 @ 0835 --- cb Water has returned to Steamboat's platform. 0839 NV angled 5' splash. 0841 NV angled splash. 0844 NV 8' angled splash.0852, 0855 NV splash. No splashes from SV observed. channels are wet but it did rain this morning. no water running down channel ar the bridge.
10304 19 Sep 2018 @ 1800 --- cb Steamboat platform is quiet. Just soft billows of steam coming from all vents. No water. Platform and runoff channels are dry. Cistern Spring is approximately 2.5' below overflow and is milky blue with a 2' diameter boil.
10308 19 Sep 2018 @ 1203 --- bbev Still quietly steaming. Cistern Springs up from this morning, 3-3.5" below rim of inner tube, vigorously boiling, water appears milky.
10296 19 Sep 2018 @ 0800 --- bbev Quietly steaming. Cistern Springs just refilling, grey, boiling water can just be seen from lower boardwalk, 5-6' below rim of inner "tube".
10290 18 Sep 2018 @ 1840 --- cb SB is quietly steaming and the platform is dry. no water in the system. Cistern Spring is still empty. No sign of water. (61°) No audible bubbling sounds, no steam, nada. . .
10281 18 Sep 2018 @ 0942 --- cb platform is quiet, gently huffing with a narrow band of dampness on SV runoff channel. No water in the system < 24 hours post eruption. Cistern Spring has drained. no water or steam visible (32°) Trough is mostly dredged with a small amount of pebbles and silt covering the drainage
10266 16 Sep 2018 @ 1255 16 Sep 2018 @ 1938 udo Woo-hoo! 1316 Woo. 1324 Woo. 1425 Woo-flippin'-hoo! 1717 Woo-hoo. 1720 Woo-hoo. 1723 Woo-hoo. 1906 Marking. no eruption yet.
10265 16 Sep 2018 @ 0800 16 Sep 2018 @ 1116 udo Emerald is clear, overflowing. Its south bubbler is barely blipping. Cistern is clear, overflowing into muddy pit. Runoff is clear. Gravel pit is nearly dredged. A few good minors should clear it. 0823 first concerted vertical with good runoff = Woo. Almost woo-hoo. ET not covered. 0942 Woo. 0947 Woo. 1022 Woo. 1042 Woo. 1044 Woo. 1057 Woo.
10254 16 Sep 2018 @ 0900 16 Sep 2018 @ 0925 bbev Increased activity from last evening. NV having angled jetting 25'+, saw 2 small vertical splashes. SV 10 - 15' with continuous light outflow that has mostly filled the trench. Some concerted play. Cistern Springs is overflowing in all directions.
10219 15 Sep 2018 @ 1755 15 Sep 2018 @ 1830 bbev SV runoff wet to bridge and beyond. Trough is mostly empty and wet. Both vents active, NV 20-25', and SV 10+', some concerted play. Trickle of water starting down shoulder from behind SV. 1824 small vert splash from NV after some strong jetting. 1827 more vertical splashing from solo NV
10210 15 Sep 2018 @ 1120 --- cb Water is returning to the platform. SV runoff has a thin area of dampness just below the vent but water has not reached the bridge. NV had a few 5 - 10' splashes one at 1128 that was CNV with a 3' V splash. Cistern Spring is overflowing with a 3' diameter boil and is a milky blue color. No water at the bridge. Emerald Spring is clear, calm and a beautiful turquoise blue color with patches of green on the rocks within the pool.
10213 15 Sep 2018 @ 0735 15 Sep 2018 @ 0746 bbev Wispy jetting from both vents. 0742 20' jet from NV. NV continued with 10-15' jetting and occasional splash from SV. Trickle of water in SV runoff.
10202 14 Sep 2018 @ 1332 14 Sep 2018 @ 1402 bbev Still quietly steaming. Cistern Springs overflowing from all sides, including into muddy pool. 1341 wispy spritz from NV, then quiet. 1350 Another very wispy NV.
10193 14 Sep 2018 @ 0935 --- cb SB platform is quiet and dry. water has not returned to the system yet. 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.
10200 14 Sep 2018 @ 0755 14 Sep 2018 @ 0811 bbev Steamy, occasional soft huffing from both vents. No water seen, which would be expected with Cistern Springs still below overflow. Cistern Springs 12-14" below overflow, light boil in middle of clear pool.
10185 13 Sep 2018 @ 1825 --- cb SB is still quiet and dry. Cistern Spring is filling. Water level is about 5' below the inner tube. It has a vigorous roiling boil and is a muddy gray color.
10178 13 Sep 2018 @ 1145 --- cb SB is quiet and gently steaming. Platform and channels are dry. Trough is mostly empty, bottom is covered in silt, no gravel. Cistern Spring has drained and is empty with just a thin wisp of steam. Emerald is just below overflow, is clear, quiet and a beautiful turquoise blue color
10170 12 Sep 2018 @ 1828 12 Sep 2018 @ 1844 bbev Continuous jetting from both vents, NV 5-20' and SV 5-10'. Continued for the 15 min I was there. Light, milky runoff in SV channel. Trench has fine silt but has not filled.
10168 12 Sep 2018 @ 1210 12 Sep 2018 @ 1217 bbev Forceful steam from NV, and some water in its channel. SV steaming and runoff dry, trough is mostly empty. Report from my coworker is that at 0845A, went from steam to water from SV and water and dirt from NV.
10164 12 Sep 2018 @ 0830 12 Sep 2018 @ 1200 bburrus At 909 steamboat had a pause, the steam dropped and then restarted with water from the north vent for a few minutes. At 1124 water started coming out of north vent again to about tree line. It also had a brief pause during this and shot up some rocks as well. Around 1130 went back to mix water and steam from North vent. Cistern spring was a few inches from the top when I got there and when I left it had drained about 12-14".
10159 11 Sep 2018 @ 1806 11 Sep 2018 @ 2023 udo WooHoo at 1806, 1830, 1838, 1935 No eruption yet.
10155 11 Sep 2018 @ 1850 11 Sep 2018 @ 2005 bbev Heard calls of 3 consecutive big minors as we drove into parking lot. Reported that trough filled this afternoon and was mostly clear when I went down to bridge. Observed several strong concerted, vertical minors, nothing sustained for more than a few seconds. Cistern was still overflowing heavily, apparently unaffected by the strong minors, which has been the case in past 2 eruptions.
10157 11 Sep 2018 @ 0815 11 Sep 2018 @ 0915 Micah Kipple Spent an hour down at steerage. There is still a lot of silt in the trench but it is partially dredged. On a Micah 1-10 scale overflow averaged about 1.5. Minors are occurring but not very voluminous. North and South did throw in some vertical splashes several times during concerteds but nothing that got me excited.
10141 10 Sep 2018 @ 1819 10 Sep 2018 @ 1836 bbev Both vents active and jetting every other minute or so, NV 5-15' and SV 5+'. SV runoff wet at top. Cistern Springs continues heavy overflow, gently boiling in center of somewhat milky, blue pool. Not a trickle of water at bridge, trough is empty of gravel or sand.
10130 10 Sep 2018 @ 0806 10 Sep 2018 @ 0830 bbev Soft rumbling with spritz of water from SV as I walked up, runoff dry. 0806 same spritz from NV. Cistern Springs overflowing from all sides. Trough is mostly empty, with only a fine silt covering the bottom. 0818 light splash from NV. Appears that water just coming back into system. 0821 lgt splash from SV. Still mostly quiet and steamy. 0826 10' jet from NV. 0830 lgt splash NV.
10125 09 Sep 2018 @ 0810 --- cb Quietly huffing steam, no water. Emerald Spring is in overflow, clear and calm. Cistern Spring is refilling slowly and is down 12" below the inner tube. (approximately 6' from overflow)
10108 08 Sep 2018 @ 1312 --- bbev Still quietly steaming, no water. Cistern Spring is empty, no sight or sound of water....really.
10114 08 Sep 2018 @ 0811 --- WillBoekel emerald spring is In overflow, clear, calm and blue/green in color. SB is mostly quiet with only a occasional huff from NV. Cistern Spring has completely drained WHICH IS TO BE EXPECTED AFTER SB QUITS! Just a faint steam from Cistern. Trough is empty of debris and did not refill.
10105 07 Sep 2018 @ 1916 07 Sep 2018 @ 1941 bbev Surprisingly quiet, yet forceful, steam from both vents, with beautiful rainbow, light precipitation on both decks. Cistern Springs down 14-16" below overflow, clear with occasional bubbles in center. Some runoff still in NV channel from the rain. SV very muddy grey, steady runoff at bridge, unable to tell how full (if at all) trough is due to very milky runoff.
10072 06 Sep 2018 @ 0730 06 Sep 2018 @ 1839 cb We've had 12+ nice NVV events throughout the day. At 1800 the deep rumbling became louder and was accompanied with some nice concerted vertical from both vents. Cistern is overflowing and Emerald has reached overflow again and is turning a beautiful shade of turquoise blue! Just for the record.
10067 06 Sep 2018 @ 1730 --- novakg No eruption yet.
10048 05 Sep 2018 @ 1835 05 Sep 2018 @ 1936 bbev Nice jetting from both vents, some occasional concerted vertical, NV 25+' and SV 15+' with SV runoff cresting middle rock on one strong SV and rolling as much gravel in, as it might take out of the trough, which is mostly full. Overall, only change was SV more active, with increased runoff, and slightly more concerted play.
10047 05 Sep 2018 @ 1124 05 Sep 2018 @ 1223 bbev NV 20-25' SV 10-15', 1201 Nv 25+ with vertical, nothing out of SV. 1205 another nice NV 25'+ with vertical, 5' SV. 1209 10-15' SV, no runoff. 1211 concerted with 20+ NV vert and SV jetting 10', still very little if any runoff. 1221 another NV 20+' with vertical. SV not as active, with very little runoff. Trickle of water at and beyond bridge.
10049 05 Sep 2018 @ 1100 05 Sep 2018 @ 1200 BillJ To add to bbev's note: in this hour, I counted 99 NV minors/splashes, 18 from SV, 16 more or less concerted. Of those, 3 or 4 were moderate and the others weak. No "Beverly OMG" events or even close.
10035 04 Sep 2018 @ 1938 04 Sep 2018 @ 2010 cb Steamboat is starting to Splash. NV 1941 nice small angled jet. 1942 wispy jet from NV. 1946 5+' NV Splash. 1947 wispy NV jet. 1950 wispy NV splash. 1952 5+' splash X 2. 1953 NV splash. 1955 NV wispy splash. 1957 NV 10' splash. 1958 NICE NV 10 - 15' jetting lasting about 20s. 2001 NV wispy splash. Next splash was at 2009 NV 5' splash. Lots of deep grumbling and gurgling accompanied with huffing from NV. SV is steamy and the splash zone is damp but no water observed from it during this time frame. Emerald Spring is the same as this morning. Cistern Spring (much like this morning) is in heavy overflow with a 2' diameter boil.
10027 04 Sep 2018 @ 1155 --- novakg NV and SV were steam only. Occasional huffing could be heard.
10021 04 Sep 2018 @ 0900 --- cb Steamboat is gently steaming with occasional stronger huffs from both vents. SV runoff channel is damp about 15' from its vent. Water levels in Emerald are slowly rising but still below overflow. New South break out is still putting out water AND there is a new steamy area in the trees closer to the boardwalk! Cistern Is in heavy overflow in all directions and the muddy pool is WAY high! To steamy to see a boil but I can hear a faint bubbling sound and can see convection waves at the edge of the pool.
9998 03 Sep 2018 @ 0916 --- cb Quietly steaming. All runoff channels are dry. Cistern is Empty. completely drained but steamy with some audible bubbling sounds deep down. (34 degrees this morning) Emerald is up a bit, maybe 3". New thing to the south is only erupting to 2-3" and steamy. Trough is full of a gray, fine silty/sandy mix.
9989 02 Sep 2018 @ 1203 --- novakg Steady play from NV and SV. NV to 30 feet. I only stayed a minute or so.
9986 02 Sep 2018 @ 0935 02 Sep 2018 @ 1020 Polly Mixed steam and water phase. Both vents continuous water with periods where they became more steamy. North Vent had some bursts that were likely 120’ or more. Water from both vents was thin.
9982 01 Sep 2018 @ 1918 01 Sep 2018 @ 2130 cb 1918 was a OMG HOLY SHIT MINOR with huge run off and many other huge verticals with amazing runoff and raging rivers. at that point trough was totally dredged.
9981 01 Sep 2018 @ 1300 01 Sep 2018 @ 1700 cb At 1337 there were two back to back OMG Holy Shit events. From 1337 to 1437 73% concerted. In that time there were 11 NSVSH runoff. from 1525 to 1625 the hour started with 2 OMG Holy shit events 2 minutes apart. and that hour was 66% concerted. In that hour there was 9 concerted NSVSH with heavy runoff and 22 concerted NSV. At that time the trough was half dredged. @ 2000 the trough is completely dredged.
9979 01 Sep 2018 @ 0810 01 Sep 2018 @ 0847 bbev NV 25+' angled, some near vertical, every 1-2 min, SV 5-15', angled, less often. Back shelf wet with trickle. Some noisy runoff. 10-15% concerted. Deep rumbling. SV runoff at bridge just beginning to move gravel. No vertical seen from either vent during brief time, but activity has improved
9970 31 Aug 2018 @ 1916 31 Aug 2018 @ 2016 udo SV runoff channel is trickling. Lots of gravel in channel. Minors are infrequent, most are weak, few concerted. Max heights seen NV 30+, SV 20. None vertical. Broken board was replaced at bridge and pool to right of Elvis has no water in it but is damp.
9965 31 Aug 2018 @ 1250 31 Aug 2018 @ 1355 bbev Both vents alternating every 1-2 minutes. NV 10-20' SV 5+' Two or three concerted, no verical (and just as I finish writing) 1321. Nice 25' NV with 5' vertical x2. 1324 more vertical (even reverse) with 25' jetting from NV . 1331 NV 20+' vertical, nothing over 5' or vert from SV and no runoff. 1338 first good solo SV angled 8+' no runoff. 1342 NV 20+' with vert splash, no SV. 1349 concerted NV 25' sustained (20sec) but no vertical, SV 5-10'. NV looks promising but SV has yet to go vertical or put out anything other than a trickle of water down runoff, or wet the shelf behind it. Reminds me of what I saw daily for about 16 days in June, only NV was stronger with more vertical, and never enough SV runoff to remove the gravel from the trough.
9960 31 Aug 2018 @ 0753 --- cb a little improvement from last night but not much. SV starting to put a trickle down runoff channel. 2 splashes in 15 minutes. Cistern in overflow. Emerald spring still down a foot from overflow, clear and calm.
9964 31 Aug 2018 @ 0720 31 Aug 2018 @ 0740 bbev Several splashes from both vents, NV 5-10' and SV <5'. SV runoff is wet, enough to send trickle just as far as the bridge and darken the channel in places. Trough is full of gravel Cistern Springs still overflowing into muddy pool, enough that it is now overflowing into the trees in several places.
9955 30 Aug 2018 @ 1906 30 Aug 2018 @ 1932 bbev Steady soft rumble, 1907 light jet 10' from NV. SV runoff and back shoulder bleached white, no water in runoff. 1911 wispy jet from NV . 1913 NV 10' wispy. 1915 NV more wispy jetting Occasional stronger huffing from both vents with little or no water. 1931 wispy jet from NV, otherwise no water seen from either vent in past 16 min.
9953 30 Aug 2018 @ 1202 30 Aug 2018 @ 1220 bbev Steaming, mostly quiet with occasional soft huffing from NV . 1207 wispy splash from SV. 1210 wispy splash from NV. 1214 more light splashing from NV 1218 angled splashing 5'.from NV Cistern Spring in overflow on all sides. Overflow has filled muddy pool. Lightly boiling in middle of pool.
9944 30 Aug 2018 @ 0752 --- cb Still mostly huffing steam with one light spritz from NV that was 2' above the vent.
9933 29 Aug 2018 @ 1833 --- cb gently steaming. no audible sounds. no water yet. platform is completely dry. Cistern Spring is filling. Water is just visible about 3+' down the inner tube and it has a nice roiling boil. Emerald Spring still down 10 - 12" and is clear, calm and green
9938 29 Aug 2018 @ 1157 --- bbev Quietly steaming from both vents, no water. Cistern Spring water level is 5-6' below rim of inner tube. Water can just be seen boiling vigorously from boardwalk. Appears to be refilling.
9923 29 Aug 2018 @ 0852 --- cb SB is very quiet and putting out beautiful billows of white steam that are drifting WAY up into the sky because of the cold temps! Impressive steam cloud. Empty! no visible water or gurgling sounds from either deck but there is a column of steam rising from its depths. Emerald Spring is clear, calm, quiet and still way below overflow but up a bit from last night. New feature still erupting and overflowing into Emerald Spring runoff channe
9912 28 Aug 2018 @ 1817 --- cb mostly quiet with slight huffing. Beautiful gentle billowy steam coming from both vents. Channels dry. Cistern Spring is down approximately 2.5' - 3' from the rim. Milky blue/green in color with NO boil or bubbles.
9917 28 Aug 2018 @ 1143 28 Aug 2018 @ 1158 bbev Heard last night at about 2130 but unsure, guess i was right about what was heard. NV continuous, angled jetting 10-50', SV continuous vertical 5-20'. Steady SV overflow at bridge, reaching shoulder of middle rock. Milky, and trough is mostly full of gravel, debris on bridge. Cistern Springs is 12-14" below overflow. Report from Ethan is that Steamboat had several strong vertical minors during both his 1400 and 1500 STEAMBOAT talks yesterday. Enough, that he stopped each talk thinking it would erupt.
9906 28 Aug 2018 @ 0915 --- cb Steamboat is post eruptive. Both vent throwing water! NV vertical to 50' and its runoff channel has pooled milky water. SV to 20' steady flow of milky water at the bridge. Cistern Spring down 18+ inches. Emerald is down below overflow.
9899 27 Aug 2018 @ 0824 --- roymarino Minor eruptions out of both vents. SV had two large runoffs. Pushed out more rocks than in deposited in the channel. NV had on vertical push maybe 10 feet high for 5 seconds but no with SV. Observed for only 20 minutes.
9888 26 Aug 2018 @ 0803 --- bbev Steaming and beginning to quietly huff from both vents. No water seen in brief time I was there. Cistern Spring in strong overflow into muddy pool and surrounding areas. Rolling boil in middle of pool. Emerald Springs has dropped to 4-6" below overflow. Bubbler to the south continues to erupt 6-8" and put water in Emeralds runoff.
9878 25 Aug 2018 @ 0724 --- bbev Quietly steaming no water seen. Cistern Springs water level 48-50" below rim of inner "tube", rolling boil. Appears to be refilling. Emerald Springs still below overflow, clear, bubbler continues 6-8" and putting water down runoff . Runoff between Monarch and Minute unchanged. My Friday and a FREE weekend!!!
9856 24 Aug 2018 @ 1311 24 Aug 2018 @ 1327 bbev Steamboat quietly steaming. Cistern Springs is completely drained, no sign or sound of water, entire crater is dry and white. I have not seen Cistern this quiet and dry all year, not to say that it has not looked this way in recent past. Emerald Springs is 3-4" below overflow (I did not notice if it was overflowing this morning as I was focused on the new bubbler). Bubbler is putting out a substantial amount of runoff, maybe equal to what Emerald had been, and is continuous, 6-12" high.
9854 24 Aug 2018 @ 0715 24 Aug 2018 @ 0735 bbev Quiet, steaming, no water from either vent and no runoff. Occasional soft huffing from NV. Runoff is bleached white to the bridge, trough is full. Cistern Springs is drained down to just below inner "tube", 32-34"(?) below overflow Water is blue, nearly clear, enough to see the stick about 6" below surface. No bubbling at all.
9851 23 Aug 2018 @ 1150 23 Aug 2018 @ 1220 bbev NV steady jetting 5 - 40'. SV steady Vertical 15 - 20. Both vents have a grayish/dirty look. SV runoff steady moderate milky flow. Trough has mostly filled in. Cistern Springs down 12 - 14" below overflow.
9844 23 Aug 2018 @ 0707 --- cb Steamboat is in mixed water/steam phase from both vents. Run off at the bridge is a steady whiteish flow. Cistern Spring is down 18" - 24" and is a calm opalescent greenish/blue pool with no boil.
9836 22 Aug 2018 @ 1739 --- cb In full steam phase. no water jets from either vent. wonderful loud roar! I am noting this Green Dragon Spring here as it doesn't have its own file. GDS has clear water running in its channels and the brown that had coated the channels from the disturbance is turning white and green.
9823 22 Aug 2018 @ 1400 --- udo Despite parking in overflow area on Grand Loop Road my car did get a small amount of Steamboat crud from this eruption. Is nowhere safe?
9821 22 Aug 2018 @ 0900 22 Aug 2018 @ 1136 udo Not much has changed in past several days. Appears to be stuck. Woo-hoo at 1012 followed by several pushes until 1024. Woo-hoo 1104. Marcing 1136.
9810 21 Aug 2018 @ 1900 21 Aug 2018 @ 2034 udo Runoff from minors continues to keep left side flowing moderately and over middle rock regularly. Minors seem less frequent, very few vertical concerteds. Hardly any were sustained. NV hit 50 feet a few times. SV to 15 or so. No eruption yet. Radio calls: collateral citation, 81 in a 45. Also 85 in a 45 on 191. Crazy drivers out there.
9796 20 Aug 2018 @ 2145 --- Kitt B no eruption yet
9795 20 Aug 2018 @ 2013 --- Kitt B no eruption yet
9791 20 Aug 2018 @ 1430 --- EricZ Has not erupted yet
9787 19 Aug 2018 @ 2112 --- Kitt B no Steamboat as of 2112. Strong minors were occurring more frequently the last hour.
9786 19 Aug 2018 @ 0630 19 Aug 2018 @ 1830 cb we had several nice events through the day that were broad, tall, vertical and started to gain height but all fail to start an eruption. ( nice NVV w/ granding) I dont have my book with me to note the times. Water coming down the channel is still clear. Cistern dropped a few inches this afternoon.
9785 19 Aug 2018 @ 1800 --- EricZ no eruption yet
9781 19 Aug 2018 @ 1330 --- udo No eruption yet. I would not be surprised if it went overnight.
9780 19 Aug 2018 @ 1204 --- udo False start. Reminiscent of 1114 on June 10.
9773 18 Aug 2018 @ 2030 --- Kitt B no Steamboat yet
9770 18 Aug 2018 @ 1818 --- EricZ Has not erupted yet
9775 18 Aug 2018 @ 0745 18 Aug 2018 @ 1818 Tom C. From ~1030-1130 ~51 minors, ~55% C, ~30% N, ~15% S. Several Whoo-hoos. Came within an eyelash of erupting during Ranger Marc's Steamboat Geyser talk AGAIN. [The 8/4 major started during his talk.] Seems ready to go if it decides to.
9769 18 Aug 2018 @ 1745 --- JeffL no eruption as of 1745
9798 18 Aug 2018 @ 0830 18 Aug 2018 @ 1620 Ben VL Stronger activity than yesterday. Many strong verticals out of North Vent, and frequent sustained verticals out of SV. Lots of strong runoff. Energy peak around noontime brought several very strong minors at 1005 (WooHoo), 1059 (WooHoo), 1155 (WooHoo), 1211 (WooHoo), 1337 (Start Screaming), 1404 (Start Screaming), and a heart stopping minor (ironically near the end of ranger Marc's talk) at 1415 that could have easily triggered a full eruption. The gazers who had seen it before were surprised it didn't start right then and there. Energy peak ended shortly after that. Runoff channel very white, including some of the South Vent catch basin. To the best of my knowledge, Tom Carberry never noticed a particularly strong sulfur smell over at Decker Island while I was there. No eruption by 1620 when I had to pull myself away to go home, but by everything I can tell, it seems ready.
9765 18 Aug 2018 @ 1525 --- udo No eruption yet. Horizontal steam devil!
9755 17 Aug 2018 @ 2000 --- Kitt B no Steamboat yet.
9754 17 Aug 2018 @ 0630 17 Aug 2018 @ 1945 JimS No eruption yet. Minors with verticals more frequent than yesterday, but did not become stronger.
9909 17 Aug 2018 @ 0840 17 Aug 2018 @ 1730 Ben VL Stronger than yesterday. More frequent NV verticals. South Vent frequently took over concerted activity with stronger "Billing" (sorry) then yeaterday. Stronger minors at 902 (Woo-Hoo), 908, 1314, 1316, 1319, 1344 (Woo-Hoo), & 1453 with many other NV verts (some concerted, some not) mixed in between. Runoff channel progressively whiter by the and of our viewing session. Steamboat is progressing slowly.
9753 17 Aug 2018 @ 1526 --- udo No eruption yet.
9742 17 Aug 2018 @ 0957 --- Janet White No eruption yet. Granding from both vents at 0902.
9740 16 Aug 2018 @ 2020 --- Kitt B no eruption as of 2020.
9741 16 Aug 2018 @ 1620 16 Aug 2018 @ 2000 Kitt B We had sustained vertical at 1646, a 1.5 minute sustained vertical at 1735, and 1830 had another vertical but it didn't last as long. I counted 5 other times when North vent had some vertical.
9737 16 Aug 2018 @ 0730 16 Aug 2018 @ 1700 Tom C. 3 hours of logged minors (10-11 (by cb), 11-12 and 1530-1630) yielded nearly identical results: ~50% concerted, ~40% North, ~10% South. Some nice vertical play in South. A little desultory vertical play from North. A little begrudgingly sustained play from both, but rarely at the same time. Several "Whoo"s. I may have missed one or two Whoo-hoos. Never seriously threatened to erupt.
9735 16 Aug 2018 @ 0720 16 Aug 2018 @ 1625 udo No eruption yet. Rugged rubber baby buggy bumpers.
9768 16 Aug 2018 @ 0910 16 Aug 2018 @ 1503 Ben VL Better than yesterday. Slightly stronger and more frequent NV verticals then yesterday. One event with "granding" in it at 1210. Frequent heavy sustained vertical "Beehiving" in SV accompanied by heavy runoff (BIll's favorite) observed, and I was able to say "rugged rubber baby buggy bumpers" at typical conversation speed!
9728 15 Aug 2018 @ 1920 15 Aug 2018 @ 2005 bbev SV continues tall sustained vert with heavy runoff(lol), mostly concerted. Runoff channel whiter than this morning and water remains clear at bridge. Area to far left of mid rock showing signs of whitening and not having a lot of "steerage" experience, I am unsure if this is new runoff area or not. Per Jim's observation from 0600 to 2000: " Lots of strong, concerted minors with very little quiet time. Several concerted vertical from NV lasting only a few seconds. Much improved from yesterday
9767 15 Aug 2018 @ 0910 15 Aug 2018 @ 1639 Ben VL More frequent vertical out of NV when compared to yesterday, yet still not that frequent. Most of them were low heavy splashes, and they were not sustained. South dominated play.
9724 15 Aug 2018 @ 0845 15 Aug 2018 @ 1245 billwarnock Steamboat having some nice water bursts from both vents quite a few concerted, but not much vertical. There were a few nice vertical shots but not enough to get excited about.
9727 15 Aug 2018 @ 1053 15 Aug 2018 @ 1215 bbev 1053 good concerted vert from both vents, did not last. 1150 Another good vertical from NV lasting only a few seconds, nothing followed.
9721 14 Aug 2018 @ 1910 14 Aug 2018 @ 1940 bbev No NV vertical seen. No real change from my 2hr observation of this morning from 1000 to 1215. SV runoff whiter than this morning.
9719 14 Aug 2018 @ 1820 14 Aug 2018 @ 1930 minissa Only thing to add is that around 1900, both vents had some play with nice volume and vertical-ness again in SV; with improved volume, angle on NV was closer to vertical (roughly 70 degrees). Bill noted some chalky or milky quality to runoff during this period, esp visible where the runoff pools between episodes of babbling brook
9717 14 Aug 2018 @ 0610 14 Aug 2018 @ 1810 JimS Lots of concerted minors but while SV had perhaps 10 or more verticals, North had 3. Only 1 vertical was concerted and all were brief.
EntrySourceLinkComment
17 Sep 2018 @ 0936 EmilyW https://m.imgur.com/E6ivkAP YNM seismograph trace. Weak trace for this eruption compared to many others
17 Sep 2018 @ 0936 EmilyW https://m.imgur.com/a/r1XSkjw Tantulas creek cfps reading
17 Sep 2018 @ 0925 EmilyW https://m.imgur.com/a/r1XSkjw Tantulas creek discharge.
17 Sep 2018 @ 0925 EmilyW https://imgur.com/a/9ZmzU5P Consistent signal barely above background. If this is SB. It's one of the weakest signals on YNM since June.
01 Sep 2018 @ 2321 EmilyW https://imgur.com/a/tJHmemm YNM for this SB
27 Aug 2018 @ 2130 EmilyW https://imgur.com/a/0g43E5L YNM Seismograph trace shows SB start time at 2112 E maj
12 Sep 2018 @ 0423 Archer https://image.ibb.co/mZDjfU/YNM_09_12.png Brief pauses in the steam phase followed by restarts that sounded from afar like they had water show on the seismogram from University of Utah station YNM (located at the Norris Museum).
12 Sep 2018 @ 0423 Archer https://youtu.be/78XnmC4LPLs South Vent in heavy steam while North restarts with some forceful jets at 0514.
22 Aug 2018 @ 1144 EmilyW https://imgur.com/a/raJKKvd YNM seismograph trace from 8/22
20 Jul 2018 @ 2237 EmilyW https://imgur.com/fenZFsb Utah Seismograph trace
04 Jun 2018 @ 0904 JSJ https://www.youtube.com/watch?v=yZoDFbO84OE Video compilation of Steamboat Geyser's 9:04 to 9:36 AM major eruption on 4 June 2018. Water phase clips start at time stamp 5:27. Steam phase clips start at time stamp 22:29. Explanatory caption is below video (click on "Show More").
04 Jun 2018 @ 0904 JSJ https://www.flickr.com/photos/jsjgeology/albums/72157670618318878 Photo album of Steamboat Geyser's 9:04 to 9:36 AM major eruption on 4 June 2018 (5 pre-eruption photos, 156 water-phase photos, 54 steam phase photos).
15 Jun 2018 @ 1655 EmilyW https://i.imgur.com/vo8gQz7.png Utah Seismo from 6/15/18
04 May 2018 @ 2315 DGInc https://drive.google.com/file/d/1rHiqMIb9CfD-cAo7vbUn8HbE_gx0Auna/view NPS Steamboat data visualized, together with some comments from me
13 May 2018 @ 0351 DGInc https://drive.google.com/file/d/1Vfeb7Yv4VAZDsYyo5lwtvIvvByMxVELB/view NPS Steamboat data visualized, together with some comments from me
13 May 2018 @ 0351 DGInc https://www.isthisthingon.org/Yellowstone/archive/2018/05/YNM_SHZ_WY_01-20180513.png YNM seismograph
04 May 2018 @ 2315 DGInc https://www.isthisthingon.org/Yellowstone/archive/2018/05/YNM_SHZ_WY_01-20180504.png YNM seismograph
04 May 2018 @ 2315 DGInc https://natwebcaww01.wr.usgs.gov/nwisweb/data/img/USGS.06036940.82336.00065..20180504.20180505..0..gif Spike on Tantalus Creek gauge just after midnight
31 Jul 2013 @ 1930 JSJ https://www.youtube.com/watch?v=hlaa_lgxVrA Video by Micah Kipple of Steamboat's post-eruption steam phase in the morning of 1 August 2013.
31 Jul 2013 @ 1930 JSJ https://www.youtube.com/watch?v=Hx8M6MAhAyo Video of water-phase.
Baseline does not exist.


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