Last Known Eruption
15y 128d 3h 47m ago

Latest Eruptions

Eruption DurationInterval
16 Jul 2003 @ 1115 min18h 5m
15 Jul 2003 @ 1710 min13y 316d 2h 30m
05 Sep 1989 @ 14404y 60d 20h 10m
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 ie35m+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 ie2d 4h 50m
20 Sep 1976 @ 0910 ie2d 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
16 Aug 1974 @ 0912 ie44d 23h 12m

Interval Statistics

Interval Count100
Min2h 14m
Max13y 316d 2h 30m
Mean106d 1h 27m
Median6d 17h 48m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
10724 04 Nov 2018 @ 1145 --- MAB Overflowing out the south side, not even hard to see as it cut a path through the snow! Pooling and cooling near the boardwalk in the trees, and not reaching farther north.
10677 28 Oct 2018 @ 1511 --- MAB Porkchop still overflowing to the south, but not as heavily as last week. The west side still pools by the boardwalk in the trees but doesn't continue northerly to the Second Erupter channel. The east side still drains down into the Gray Lakes channel of Tantalus. On my first visit in the morning I didn't see steam in that channel, but later in the day could see water.
10658 22 Oct 2018 @ 1400 --- MAB Full, overflowing to the south. Runoff goes two directions, one leg east towards the Gray Lakes branch of Tantalus, the other leg flows west to puddle near the boardwalk in the trees, then curves north to join Second Erupter's runoff channel near the boardwalk crossing.
10448 25 Sep 2018 @ 1737 --- cb water level is high. up to the rim
10182 13 Sep 2018 @ 1300 --- cb down about 1" from rim
9935 29 Aug 2018 @ 1850 --- cb About 2" below the rim. calm, no boil. Second Erupter has water sloshing around the rim and splashing 6" above the rim
9903 28 Aug 2018 @ 1010 --- cb down about 3" from the rim. floating bubbles. no boil
9871 25 Aug 2018 @ 0930 --- cb still down about 6", calm, greenish color with a few small bubbles floating on the top
9831 22 Aug 2018 @ 1813 --- cb Down 10" from the rim. slight occasional single bubble in the center. Water in the feature at the base has visible water spray to 4" above the crater.
9757 17 Aug 2018 @ 1812 --- MAB Water level still down several inches; water remains weird green color. No boiling seen; numerous floating bubbles on the surface.
9612 10 Aug 2018 @ 1410 --- MAB My eyes, brain and memory said 2-4" below the sinter rim, but photos show more like 6" down. Water is Greenish in color.
9520 07 Aug 2018 @ 1153 --- bbev 3-4" below overflow.
9436 03 Aug 2018 @ 1106 --- cb 2" below rim. color is a greenish blue. slight bubble. Feature below and in front of porkchop is active and erupting 2 - 3" continually.
9171 12 Jul 2018 @ 2130 13 Jul 2018 @ 0500 DGInc Temperature rose ~6°C in approximately this time span - from ~75.5°C to ~81.5°C. Start of a new cycle?
9132 11 Jul 2018 @ 0950 --- Tara Water level down about 3" from rim. Vent to NW down and gurgling.
9076 09 Jul 2018 @ 0820 --- Polly Norris cycle appears to have shortened to 5 days. (See the low points on the Porkchop graph June 28, July 3, and possibly July 8.)
8960 30 Jun 2018 @ 1020 --- MAB Still down. Could my my imagination but possibly lower than my last viewing... about 8"
8849 22 Jun 2018 @ 1050 --- MAB Water level still down about 6"
8880 21 Jun 2018 @ 0945 --- Polly Porkchop's pool is down 2 or 3 inches. It is bubbling and is a beautiful bluish color.
8798 19 Jun 2018 @ 1845 --- cb water level has dropped a few inches and it has a noticeable boil in the center. The pool in front was very steamy
8752 18 Jun 2018 @ 0700 --- Polly A note from Bob about reading the Porkchop graph: Need to read the logger considering ambient temperatures (daily high & low air temperatures) and precipitation. Not an exact science. Main thing is a low drop not weather related followed over the next 12 to 24 hours by a rise not weather related. Steamboat “pause” (drop) typically 2 days later followed by recovery to a peak 1 to 2 days later followed by a slow taper to next “pause”.
7950 18 Feb 2018 @ 0001 04 Mar 2018 @ 1717 Polly This note is from my brother, Bob Partner, and gives additional information regarding DGInc's Echinus notes on 2/19 & 3/3. The temperature graph at Pork Chop somewhat mimics the Steamboat temps (& the Steamboat graph has been down except for now showing data Feb 28-Mar 3). -Polly. “Event” at Norris late on 2/17 – early 2/18. Anomaly in Constant Geyser (very low spike in temp rather than normal larger spike), and big drop in temp at Porkchop, followed shortly after by frequent minors at Echinus. Drop in temp and steady increase in flow from Tantalus Creek (need to go to the “stream flow data” page). Has some of the look of another disturbance, but…... Interesting that there is a temperature recovery on Tantalus early on the 18th while water flow continued to increase – got unusually high. Storm hit about that time, but precipitation totals (less than 0.1 inch per hour, so only light precipitation) would not account for the large increase in water volume or initial drop in temp, and air temps at the time did not fluctuate a lot, so temp drop would not relate to the storm either. Definitely some kind of “event” in the basin with all the changes occurring about the same time frame.
7797 29 Oct 2017 @ 2359 --- DGInc It appears as if Porkchop's water level is recovering. Hit ±11°C (±52°F) on 14th of October, shortly after that a sharp increase to more than ±35°C (±95°F). Temperature still variable, sometimes increasing and sometimes dropping below ±30°C (±86°F).
7687 03 Oct 2017 @ 2359 --- DGInc Temperature made a remarkable drop from ±47°C (±117°F) to ±24°C (±75°F) between Sep. 4 and Oct. 4. This has likely nothing to do with the changing weather, as the start of the drop was a couple of days before the Nuphar Lake logger began logging lower temperatures.
4046 05 May 2017 @ 1040 --- sfavor pool full
3011 08 Jun 2016 @ 1712 --- MAB Full again, as seen on the yvo monitor, but I wanted to confirm it visually. Second Erupter was IE but not producing any runoff
2973 05 Jun 2016 @ 1100 05 Jun 2016 @ 1730 MAB Water level is still nearly out of sight. It could be coming up, or maybe I was viewing it in a better spot
2941 01 Jun 2016 @ 1249 --- MAB Empty as far as you can see into it. There is water in Second Erupter, slight pulsing but not overflowing down the channel
7647 01 Jan 1990 @ 1800 --- research-mab 1-01-90 Porkchop Geyser No overflow,water very opalescent, intermittent boiling up to 1m. Pool to north discharging an estimated 70-80 gpm – also slightly opalescent
4701 22 Oct 1989 @ 1800 --- research-mab 10/22/1989 Porkchop- pool still beautiful aqua-blue some “eruptive type” activity. Vigorous splashing above rocks visible from boardwalk. Will it become a fountain geyser?
5371 13 Sep 1989 @ 1800 --- research-mab 9/13/1989 More info on Porkchop as per R. Hutchinson: Maximum ejecta: 66.1 meters to the south, 43.4 m to the north, 31.5 to the west, 25.6 m to the east. The largest piece is 1.88 m long; 1.23m by 11.7>m E→W the pool is 4m x 5 ½ m. and is about 2’ deep with boiling water. Porkchop began spouting ‘perpetually’ about 4 yr and 5 months ago.
7596 19 Feb 1989 @ 0000 19 Feb 1989 @ 2359 JSJ Porkchop Geyser's ice cone [= wintertime ice buildup from emitted steam and water crystallizing around vent area] 7.11 meters high.
7653 19 Feb 1989 @ 1800 --- research-mab 2-19-89 Porkchop Geyser ice cone 7.11m high,
7571 12 Feb 1989 @ 1800 --- research-mab 2-12-89 Porkchop Geyser ice cone 6.27m high
7589 05 Feb 1989 @ 0500 05 Feb 1989 @ 2359 JSJ Porkchop Geyser's ice cone [= wintertime ice buildup from emitted steam and water crystallizing around vent area] much higher - estimated 6 meters tall - than last week. Morning low temperature at Canyon today was -43 degrees Celsius.
7567 16 Jan 1989 @ 1800 --- research-mab 1-16-89 Porkchop Geyser – ice cone is ~3.3-3.4m high & very blue on the back side.
7569 15 Jan 1989 @ 1800 --- research-mab 1-15-89 Checked ice cone near Porkchop Geyser. Estimated height of blue ice formation was 3.3-3.4m.
4697 02 Jul 1988 @ 1800 --- research-mab 7/2/1988 Porkchop is louder than ever with continuous steam/water eruptions. It sounds like a jet plane & is audible from the museum and the campground.
4692 05 Jun 1988 @ 0000 --- research-mab 6/1/1988 Porkchop Rick Hutchinson: Ice Cone max height this winter 6 meters, 1588 cubic meters - 46,000,000 ice cubes
4685 29 Jun 1986 @ 1800 --- research-mab 6/29/1986 Porkchop is still erupting constantly, but has lost much of the force it was exhibiting. (Began March 1985) (not continuous for a short time last week)
4846 07 Aug 1985 @ 1800 --- research-mab 8/07/1985 Porkchop Geyser = low sputtering all day with the loud putt-putt noise that it makes. It did have some bursts that went 5 to 10 feet but mainly was low to 5 feet high.
4859 17 Jul 1985 @ 1800 --- research-mab 7/17/1985 Porkchop seems to be back to violence again. Watched it for close to ½ hr erupt water 7-15’. Very noisy w/roaring steam again too.
7602 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Porkchop Geyser – V. opalescent milky blue water - recently active & on 2/12/84
5235 10 Sep 1976 @ 0920 --- research-mab 09/10/1976 Dr Morey’s Porkchop – full, with small bubbles breaking gently on its surface (9:20)
5634 12 Aug 1975 @ 1815 --- research-mab 08/12/1975 Dr Morey’s Porkchop filling rapidly at 1815
5857 07 Jun 1974 @ 1800 --- research-mab 06/07/1974 Observed Dr Morey’s Porkchop, Vixen, Veteran and my “Rubble Geyser” (Hodie’s New Crater Geyser”) in eruption. {no times noted}
6213 26 Sep 1973 @ 1800 --- research-mab 09/26/1973 {no time noted} Temperatures taken today Dr Morey’s Porkchop 186 erupting
6109 03 Sep 1973 @ 1800 --- research-mab 09/03/1973 Dr Morey’s Porkchop seen erupting up to ~2’ {no time}
6075 22 Aug 1973 @ 1800 --- research-mab 08/22/1973 Dr Morey’s Porkchop seen erupting up to 4’ {no time}
6069 20 Aug 1973 @ 1800 --- research-mab 08/20/1973 Dr Morey’s Porkchop appears quiet & clear – but all around it is a recent white deposit {different writing} --> Silica
5919 14 Mar 1973 @ 1830 --- research-mab 03/14/1973 Dr Morey’s PorkChop: at 6:30 pm the pool was observed to be completely drained out and the geyser was experiencing an extremely vigorous and noisy steam phase, shooting spray and steam up to 9 feet.
6432 30 Aug 1972 @ 1800 --- research-mab 08/30/1972 Dr Morey’s Porkchop – was completely drained – even well below the vent opening. {generic time- end of day note}
6347 08 Jul 1972 @ 1055 --- research-mab 07/08/1972 Dr Morey’s had water, all drained except for fluctuating 5-7” at vent at SW end at 10:55
6312 14 May 1972 @ 1800 --- research-mab 05/14/1972 The following geysers have been seen erupting since I arrived last night: Ledge 6-10’, Iris 2-3’, Little Whirligig 15’, Basin 1’-2’, Fan 4’-5’, Bear Den, Feisty, Fireball 2-3’, Minute 1’-2’, Blue 7-15’, Africa 25-35’, Vixen 7’-15’, Dr Morey’s Porkchop 3’-5’, Echinus 10’-40’, Steamboat 5-20’
6476 02 Oct 1971 @ 1800 --- research-mab 10/02/1971 Dr. Morey’s Porkchop – observed starting to overflow for another eruption. {on rove- no time}
6516 26 Sep 1971 @ 1800 --- research-mab 09/26/1971 Green Dragon was observed to be still more active, Dr. Morey’s Pork Chop had erupted during the afternoon, & Black Hermit Cauldron area is killing a few more trees.
6573 11 Sep 1971 @ 1800 --- research-mab 09/11/1971 Dr Morey’s Pork Chop 186º – up 23º 7/31/71 – in eruption {temps taken 1430-1700}
6531 10 Sep 1971 @ 2000 --- research-mab 09/10/1971 Dr Morey’s Pork Chop- pool is clear as usual but it erupted at least once this afternoon and was starting to refill by 8:00 PM
6567 07 Sep 1971 @ 1015 --- research-mab 09/07/1971 No activity out of either Dr. Morey’s Porkchop or Rick’s new thing {Rubble Geyser} when I checked at 10:15 this morning.
6538 06 Sep 1971 @ 1030 06 Sep 1971 @ 1830 research-mab 09/06/1971 More observations on Dr. Morey’s Porkchop: it was practically empty but erupting at around 10:30, 1½ inches below the rim but shooting a fine pencil like ray of water 15-20 feet, here each burst of water was like what one would hear of the exhaust pipe of an old John Deere “A” tractor was sputtering a little over a foot below the water level – both in sounds and in the time interval between each sputter. At approximately 6:30 PM the pool was almost empty again, but with little bubbling action; it soon increased again however. The vent at the base of the pool from which DR Morey’s PorkChop plays is roughly an equalangular triangle, about 3” long on the base & 1¼ in for the height.
No attachments for this geyser.
Baseline does not exist.


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