Porkchop Geyser

Last Known Eruption
22y 40d 7h 53m ago

Latest Eruptions

Eruption DurationInterval
16 Jul 2003 @ 1115 min18h 5m
15 Jul 2003 @ 1710 min13y 316d 2h 30m
05 Sep 1989 @ 14403y 126d 40m
03 May 1986 @ 1400 ie299d 19h 30m
07 Jul 1985 @ 1830 A296d 10h 6m
14 Sep 1984 @ 08243h 21m
14 Sep 1984 @ 05031h 8m 3h 31m
14 Sep 1984 @ 01321h 6m 29d 4h 53m
15 Aug 1984 @ 20393h 39m
15 Aug 1984 @ 17001h 11m 3h 15m
15 Aug 1984 @ 13451h 4m 3h 38m
15 Aug 1984 @ 10071h 8m 10d 14h 45m
04 Aug 1984 @ 19222h 59m
04 Aug 1984 @ 16231h 14m 3h 7m
04 Aug 1984 @ 13161h 18m 9d 18h 43m
25 Jul 1984 @ 18333h 6m
25 Jul 1984 @ 15271h 19m 5d 17h 11m
19 Jul 1984 @ 22161h 23m 2h 57m
19 Jul 1984 @ 19191h 21m 3h 10m
19 Jul 1984 @ 16091h 25m 3h 2m
19 Jul 1984 @ 13071h 22m 22h 10m
18 Jul 1984 @ 14571h 22m 23h 58m
17 Jul 1984 @ 14593h 11m
17 Jul 1984 @ 11481h 21m 2h 53m
17 Jul 1984 @ 08551h 22m 5d 20h 8m
11 Jul 1984 @ 12471h 22m 3h 23m
11 Jul 1984 @ 09241h 21m 2h 14m
11 Jul 1984 @ 0710 ie>35m 302d 20h 10m
12 Sep 1983 @ 110053d 18h 3m
20 Jul 1983 @ 1657 ie9d 5h 17m
11 Jul 1983 @ 1140 ie51d 16h 19m
20 May 1983 @ 1921 ie258d 22h 1m
03 Sep 1982 @ 2120 ie55d 3h 40m
10 Jul 1982 @ 17402h 19m
10 Jul 1982 @ 1521 ie9d 22h 21m
30 Jun 1982 @ 17001y 2d 6h 4m
28 Jun 1981 @ 1056 ie283d 23h 27m
17 Sep 1980 @ 1129 ie17h 14m
16 Sep 1980 @ 1815 ie14d 23h 27m
01 Sep 1980 @ 1848 ie37d 58m
26 Jul 1980 @ 1750 ie309d 1h 12m
21 Sep 1979 @ 16385h 53m
21 Sep 1979 @ 1045 ie16m 38s 9d 1h 0m
12 Sep 1979 @ 0945 ie4d 48m
08 Sep 1979 @ 0857 ie7d 23h 27m
31 Aug 1979 @ 0930 ie17h 15m
30 Aug 1979 @ 1615 ie13d 31m
17 Aug 1979 @ 1544 ie6h 12m
17 Aug 1979 @ 0932 ie4d 18h 41m
12 Aug 1979 @ 1451 ie9d 5h 51m
03 Aug 1979 @ 0900 ie13d 23h 57m
20 Jul 1979 @ 0903 ie18d 8m
02 Jul 1979 @ 0855 ie20d 22h 45m
11 Jun 1979 @ 1010 ie5d 19h 50m
05 Jun 1979 @ 1420 ie1d 3h 13m
04 Jun 1979 @ 1107 ie261d 20h 48m
15 Sep 1978 @ 1419 ie13d 5h 45m
02 Sep 1978 @ 0834 ie1d 22h 59m
31 Aug 1978 @ 0935 ie4d 0m
27 Aug 1978 @ 0935 ie76d 22h 55m
11 Jun 1978 @ 1040294d 50m
21 Aug 1977 @ 09505d 35m
16 Aug 1977 @ 091518d 25m
29 Jul 1977 @ 0850 ie37d 15m
22 Jun 1977 @ 0835 ie149d 20h 5m
23 Jan 1977 @ 1130 ie121d 22h 0m
23 Sep 1976 @ 1430 ie1d 30m
22 Sep 1976 @ 1400 ie1d 4h 50m
21 Sep 1976 @ 0910 ie3d 18h 22m
17 Sep 1976 @ 14483d 5h 33m
14 Sep 1976 @ 09159d 15m
05 Sep 1976 @ 0900 ie1d 0m
04 Sep 1976 @ 0900 ie16d 18h 35m
18 Aug 1976 @ 1425 ie11d 5h 20m
07 Aug 1976 @ 0905 ie10d 16h 35m
27 Jul 1976 @ 163019d 7h 15m
08 Jul 1976 @ 0915 ie5d 30m
03 Jul 1976 @ 0845 ie13d 21h 15m
19 Jun 1976 @ 1130 ie5d 20h 30m
13 Jun 1976 @ 1500 ie7d 5h 55m
06 Jun 1976 @ 0905 ie4d 50m
02 Jun 1976 @ 08156d 23h 13m
26 May 1976 @ 0902 ie269d 16h 47m
30 Aug 1975 @ 1615 ie6d 2h 45m
24 Aug 1975 @ 1330 ie3d 4h 23m
21 Aug 1975 @ 0907 ie9d 18h 50m
11 Aug 1975 @ 141723h 47m
10 Aug 1975 @ 1430 ie5h 30m
10 Aug 1975 @ 0900 ie2d 16h 30m
07 Aug 1975 @ 1630 ie8d 4h 40m
30 Jul 1975 @ 1150 ie8d 19h 20m
21 Jul 1975 @ 1630 ie22h 0m
20 Jul 1975 @ 1830 ie5d 9h 35m
15 Jul 1975 @ 08556d 17h 10m
08 Jul 1975 @ 1545 ie2d 5h 50m
06 Jul 1975 @ 0955 ie7d 45m
29 Jun 1975 @ 09106d 18h 27m
22 Jun 1975 @ 1443301d 5h 5m
25 Aug 1974 @ 0938 ie7d 18h 0m
17 Aug 1974 @ 1538 ie1d 6h 26m

Interval Statistics

Interval Count100
Min2h 14m
Max13y 316d 2h 30m
Mean105d 14h 39m
Median6d 17h 48m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
41011 11 Aug 2025 @ 1747 --- MAB full blue w sizzle in center - good flow both directions down channels out the back side
40657 27 Jul 2025 @ 1756 --- MAB full with no sizzle or blip seen on brief stop - great overflow out the back both directions with more flooding to the west into the silica bog but still not reaching round the bend to Second Erupter
40442 17 Jul 2025 @ 1757 --- nails Faint popping or thumping sounds. Opalescent blue with one slight bubbling point.
39956 20 Jun 2025 @ 1708 --- MAB full and pearly blue with tiny center blip - flow out the back both directions but it was hard to see east channel
39851 13 Jun 2025 @ 1709 --- MAB full - greenish blue and thumping - east ovfl out the back reached the creek - west overflow out the back covers a wider area
39772 08 Jun 2025 @ 1642 --- MAB blue with center sizzle - visually seems full but may be a bit low - channel out the back to S Fork is only wet part way - channel to west towards silica bog towards bwalk flowing pretty well but bog towards Second erupter is dry
39674 05 Jun 2025 @ 1540 --- MAB full w flow out the back - not as much on east side
39565 31 May 2025 @ 0852 --- ypcaribou Full with luminescent colloidal blue water.
39491 29 May 2025 @ 1712 --- MAB full w tiny center blips- overflow out back side
39178 19 May 2025 @ 1915 --- Ajw High water level with moderate steam and pretty blue color in the pool. Visibly boiling.
39072 15 May 2025 @ 1125 --- mhreed Overflowing, thumping
38947 10 May 2025 @ 1614 --- MAB full w tiny center blips - flow out the back both ways -
38793 03 May 2025 @ 1635 --- MAB Full opalescent blue flowing both directions out the back- no blips seen just a center sizzle
38663 27 Apr 2025 @ 1735 --- MAB full pearly blue - flowing out back side
38524 19 Apr 2025 @ 1603 --- MAB full pretty pearly blue no boils or convection seen - light overflow out back side
38413 10 Apr 2025 @ 1244 --- SantaFe108 Full and overflowing colloidal blue water. Bubbling.
38011 15 Dec 2024 @ 1623 --- K.Cooper blue and relatively calm
37916 07 Nov 2024 @ 1600 --- SantaFe108 3" below rim and lightly bubbling. Colloidal blue color.
37884 31 Oct 2024 @ 1632 --- SantaFe108 ~2in below rim and boiling milky blue water.
37829 29 Oct 2024 @ 1630 --- MAB a shade lower at ~2-3in below sinter shelf
37796 27 Oct 2024 @ 1310 --- MAB NO runoff either direction - water level down ~2in below sinter shelf - opaque blue w center blips
37735 24 Oct 2024 @ 1618 --- SantaFe108 Overflowing and bubbling with milky blue water.
37651 19 Oct 2024 @ 1614 --- MAB light blue very full with runoff out the back
37486 10 Oct 2024 @ 1036 --- SantaFe108 Overflowing out the back, thumping and boiling with blue, milky water.
37367 03 Oct 2024 @ 1510 --- SantaFe108 Overflowing with milky blue water. Boiling and thumping.
37251 29 Sep 2024 @ 0948 --- TSBryan perfectly quiet
37224 28 Sep 2024 @ 1729 --- cb milky turquoise blue in color. pool is overflowing. tiny bubbles over the vent
36587 27 Aug 2024 @ 1916 --- cb hard to see but the pool looks more green than blue. overflowing on 2 sides and I can still hear the popping sounds.
35419 21 Jun 2024 @ 1511 --- nails Opalescent blue with small bubbling area in center.
35341 19 Jun 2024 @ 1055 --- Craigmon99 Beautiful opalescent blue. Intermittent bubbles in center
35342 19 Jun 2024 @ 1055 --- Craigmon99 Beautiful opalescent blue. Intermittent bubbles in center
35098 10 Jun 2024 @ 1312 --- SantaFe108 Calmly overflowing blue milky water.
35003 08 Jun 2024 @ 1152 --- cb pool is milky turquoise blue in weak overflow, with tiny bubbles in the center. still making the popping sounds.
34711 26 May 2024 @ 0850 --- ypcaribou Time approximate. Very full, a glowing colloidal blue. Runoff wet on terracing.
34252 19 Apr 2024 @ 1503 --- MAB full and a very pretty colloidal blue w light center blips - flow wraps around but isn't flooding the silica bog and 2nd Erupter area only reaching the 2nd Erupter channel closer to the boardwalk
29317 31 Oct 2023 @ 1615 --- MAB 2 inches below the rim - ping pong sized center bloops but not steady - no flow out the back - the little terraces are dry and snow in the silica bog is undisturbed
29024 22 Oct 2023 @ 0918 --- SantaFe108 In overflow, milky blue water with boiling. Not thumping as I walked by.
28977 21 Oct 2023 @ 1538 --- JR Still cloudy blue, but some decent bubbles in the center.
28917 20 Oct 2023 @ 1546 --- MAB just below the sinter shelf - backside channels and terraces damp but drying out - blue pool w pretty good center blips
28882 19 Oct 2023 @ 1212 --- DanS Full, blue with bubbling and thumps.
28795 14 Oct 2023 @ 1620 --- MAB full blue pool with tiny center blips - light runoff out back side
28769 14 Oct 2023 @ 1330 --- SantaFe108 Thumping! Colloidal blue and overflowing.
28636 05 Oct 2023 @ 1227 --- cb Turquoise blue pool with tiny bubbles breaking the surface. overflowing out both sides. i can still hear the thumping sounds.
28575 30 Sep 2023 @ 0804 --- ypcaribou Full, milky blue, thumping to the beat of an A-Fib heart.
28447 24 Sep 2023 @ 1125 --- DanS Full and blue. Light audible thumping.
28012 04 Sep 2023 @ 1647 --- cb turquoise blue, low & just barely in overflow. Tiny bubbles breaking the surface. still can hear the popping sounds
27598 14 Aug 2023 @ 1617 --- cb steaming, turquoiseolky nlue in color, tiny bubbles over center vent and thumping can still be heard
27288 28 Jul 2023 @ 2018 --- SantaFe108 Overflowing with milky blue water and thumping.
26970 09 Jul 2023 @ 1559 --- cb pool milky turquoise blue with a tiny bit of convection over the vent. Popping noises are still audible. Overflowing to the west.
26950 08 Jul 2023 @ 1953 --- nails Light milky blue with tiny bubbling point. There is an intermittent thumping noise.
26832 04 Jul 2023 @ 0923 --- MAB excellent overflow out south wrapping around to the silica bog - pearly blue in color not many bubbles visible - did not hear pops or thumps
26406 17 Jun 2023 @ 1509 --- SantaFe108 Full with milky blue water.
25865 28 May 2023 @ 2004 --- SantaFe108 Full and overflowing with milky blue water. Audible thumping from boardwalk with only occasional bubbling.
25657 21 May 2023 @ 1416 --- SantaFe108 Full and in overflow, with milky blue water.
25468 15 May 2023 @ 1934 --- ypcaribou Full with milky light blue liquid. In overflow
24580 30 Oct 2022 @ 1733 --- ypcaribou Full, milky blue. Still thumping.
24409 15 Oct 2022 @ 0935 --- MAB full light blue and overflowing out E and W channels - tiny center bubbles
24255 05 Oct 2022 @ 1301 --- cb pool is high, opalescent turquoise blue color with a few small bubbles breaking the surface. overflowing in both directions. Still can here the popping sounds.
23966 20 Sep 2022 @ 1719 --- ypcaribou Full, milky, irredescent blue. Overflow coating the west knoll but not visibly flowing. Thumps still heard.
23638 07 Sep 2022 @ 1136 --- MAB pearly blue full w teeny tiny center boil - overflow wraps around to silica bog and joins 2nd Erupter channel which is bone dry above that point
23504 31 Aug 2022 @ 1139 --- cb Overflowing on both sides, milky turquoise blue with small bubble breaking the surface in the center. The audible popping sound is still here and seems louder to me!
23324 21 Aug 2022 @ 1033 --- ypcaribou Amazing, colloidal, bright blue. Full to rim. Thumping audible!
23258 18 Aug 2022 @ 0928 --- MAB pale blue overflowing both directions - popping thumps audible from bw north snd west sides
23091 07 Aug 2022 @ 0830 --- dandersen The popping noises Carol wrote about earlier this year are still happening.
23080 06 Aug 2022 @ 1146 --- cb no change
22987 02 Aug 2022 @ 1056 --- cb Pool is still opalescent turquoise blue in color with a very small bubble in the middle. pool is overflowing on both sides. I still hear the popping sounds.
22951 31 Jul 2022 @ 1130 --- cb pool is high, good overflow on both sides, opalescent turquoise blue in color with small consistent string of bubbles breaking the surface. i can still hear the weird popping sound near or around PC.
22898 27 Jul 2022 @ 1551 --- MAB in overflow
22742 20 Jul 2022 @ 1907 --- nails Light blue with a slight bubbling or convection. Second Erupter is dry.
22704 19 Jul 2022 @ 1219 --- cb Turquoise blue, overflowing X 2 & I can hear distinct thumping sounds that are either coming from PC or 2nd Eruptor. 99% convinced the sounds are coming from PC! Second Erupter has no water or steam. Thumping does not correlate with any pool movement. PC pool is steaming on this warm afternoon!
22496 11 Jul 2022 @ 1652 --- cb overflowing on both sides again. pool is blue green in color with a occational bubble
22322 04 Jul 2022 @ 1458 --- cb pool low, below the sinter rim by a hair. no overflow, 2" blooping boil in the center. volor is blue.
22376 01 Jul 2022 @ 1840 --- MAB Flowing out the backside splitting east and west
22212 29 Jun 2022 @ 1416 --- cb Vibrant opalescent turquoise blue color. Occational bubble breaking the surface. overflowing in both directions.
22120 25 Jun 2022 @ 1158 --- cb no change
22095 23 Jun 2022 @ 1748 --- cb opalescent turquoise blue color, pool is just at the rim & slight overflow on both sides. no bubbles
21611 31 May 2022 @ 1526 --- cb in overflow on both sides. Turquoise in color. 1 small bubble centerish.
21332 16 May 2022 @ 1128 --- Tara Full and overflowing, water is turquoise color.
21238 11 May 2022 @ 1620 --- MAB full - a pretty light blue color w tiny center dots not enough to even call a tiny boil
21092 26 Apr 2022 @ 1630 --- MAB full - light blue
21072 24 Apr 2022 @ 1557 --- DanS Full and blue
21017 18 Apr 2022 @ 1649 --- MAB light blue - appeared to be an inch below the shelf but waters were flowing out the S - lots of wetness from last Tuesday storm who knows
20303 04 Nov 2021 @ 1151 --- MAB light blue - full and flowing out the back - the silica bog wraps around towards Second Erupter and makes a nice blue boggy scene but doesn't connect to 2nd Erupter channel
20109 24 Oct 2021 @ 1241 --- MAB full and overflowing - didn't walk much farther south but the waters in the silica bog from overflow have joined the Second Erupter channel and a little flows under the BW - Could just be extra H2O from snow - a later visit looked like it was maybe 1in down as seen from west - too hard to tell from north view
20087 22 Oct 2021 @ 1350 --- MAB blue with overflow out the backside then E to S Fork Tantalus and W to silica bog - bog wraps around to the N towards Second Erupter but isn't as full there
20049 19 Oct 2021 @ 1326 --- cb pool is high & overflowing on in both channels. color is turquoise blue with a wee bubble barely breaking the surface of the pool.
20024 17 Oct 2021 @ 1218 --- MAB full - pretty blue color w light center boil- still overflowing out the back w waters flowing E and W
19901 05 Oct 2021 @ 1119 --- MAB pearly blue color - light center boil - overflowing out the back to both east to So. Tantalus and the bog to the west
19812 30 Sep 2021 @ 1306 --- cb pool very high, at or above the scalloped edges, and in overflow on both sides. pool is a milky, opalescent turquoise blue color & steamy.
19609 16 Sep 2021 @ 1054 --- cb pool is high & in overflow on both sides. color is greenish with occational tiny bubbles breaking the surface.
19622 16 Sep 2021 @ 0909 --- MAB full - slight overflow out back side pooling to west
19374 08 Sep 2021 @ 1154 --- Tara calm with light bubbles, down .5" from rim
18783 01 Aug 2021 @ 1038 --- cb About an inch below the scalloped edges, blue un color with weird soapy looking foam floating in patches all over the top of the pool.
18747 30 Jul 2021 @ 0750 --- ypcaribou Quite full & milky blue
18670 25 Jul 2021 @ 1740 --- cb Pool is down 2" below the rim. not in overflow, green in color and slight bubble breaking the surface!
18509 18 Jul 2021 @ 1108 --- cb 2" of exposed sinter rim. not in overflow. 1" bubbles breaking the surface in the middle of the pool. color is sea foam green.
18368 11 Jul 2021 @ 1508 --- cb pool is turquoise blue, water level is high and it has a 2" bubble in the center. Overflowing on both sides.
18330 09 Jul 2021 @ 1308 --- MAB full blue and overflowing out the back end to the little terracettes - very light boil
18279 05 Jul 2021 @ 1516 --- cb Overflowing to the west. Opalescent blue in color with miniscule convection waves occationally coming from the center.
18259 03 Jul 2021 @ 1747 --- MAB full - more blue than green with a teeny tiny center boil
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