Last Known Eruption
1h 2m ago

Latest Eruptions

Eruption DurationInterval
25 Jul 2021 @ 09111h 40m
25 Jul 2021 @ 073133s 1h 4m
25 Jul 2021 @ 0627 ie28m
25 Jul 2021 @ 0559 ns1h 0m
25 Jul 2021 @ 0459 ie2h 56m
25 Jul 2021 @ 0203 wc>3h 29m 7h 4m
24 Jul 2021 @ 1859 ie1h 41m
24 Jul 2021 @ 17187h 14m
24 Jul 2021 @ 10041h 48m
24 Jul 2021 @ 0816 wc1h 32m
24 Jul 2021 @ 0644 wc2h 49m
24 Jul 2021 @ 0355 wc3h 50m
24 Jul 2021 @ 0005 A2h 43m
23 Jul 2021 @ 21222h 31m
23 Jul 2021 @ 18515h 13m
23 Jul 2021 @ 13382h 10m
23 Jul 2021 @ 1128 ie wc6h 4m
23 Jul 2021 @ 0524 ie6h 1m
22 Jul 2021 @ 2323 ns1m 5h 15m
22 Jul 2021 @ 1808 ie2h 23m
22 Jul 2021 @ 154527m 49s 1h 46m
22 Jul 2021 @ 135958s 1h 25m
22 Jul 2021 @ 12343m 57s 6h 58m
22 Jul 2021 @ 0536 wc7h 49m
21 Jul 2021 @ 2146:11 wc22m 3s 23m 20s
21 Jul 2021 @ 2122:51 wc<17m 6s 6h 15m 21s
21 Jul 2021 @ 1507:30 wc6h 6m 25s 1h 54m
21 Jul 2021 @ 13131m 3h 23m
21 Jul 2021 @ 0950 ie wc>2h 2m 2h 8m
21 Jul 2021 @ 0742 ie wc>1h 47m 11h 53m
20 Jul 2021 @ 1949 ie wc2h 49m
20 Jul 2021 @ 17002h 8m
20 Jul 2021 @ 145230m 22m
20 Jul 2021 @ 143040s 19m
20 Jul 2021 @ 141145s 5h 45m
20 Jul 2021 @ 08263h 53m 25m
20 Jul 2021 @ 080133s 1h 12m
20 Jul 2021 @ 0649 ie28m
20 Jul 2021 @ 0621 ns15m 1h 22m
20 Jul 2021 @ 0459 ie wc8h 27m
19 Jul 2021 @ 203249m 32s 29m
19 Jul 2021 @ 200334s 1h 23m
19 Jul 2021 @ 1839:50 wc2m 39s 3h 47m
19 Jul 2021 @ 1452 ie2h 51m
19 Jul 2021 @ 120154m 2h 6m
19 Jul 2021 @ 09557m 1h 15m
19 Jul 2021 @ 0840 ie3h 56m
19 Jul 2021 @ 0444 ie wc7h 47m
18 Jul 2021 @ 2057 wc2h 31m
18 Jul 2021 @ 1825:20 wc4h 24m
18 Jul 2021 @ 1401 ie wc3h 36m
18 Jul 2021 @ 102529m 1h 50m
18 Jul 2021 @ 083525m
18 Jul 2021 @ 0810 ie1h 59m
18 Jul 2021 @ 061142m 1h 28m
18 Jul 2021 @ 0443 ie wc9h 49m
17 Jul 2021 @ 1854 wc2h 15m
17 Jul 2021 @ 1639 wc33m 42m
17 Jul 2021 @ 1557~1m 28m
17 Jul 2021 @ 1529~1m 2h 28m
17 Jul 2021 @ 1301 ie wc4h 7m
17 Jul 2021 @ 08545h 8m 2h 51m
17 Jul 2021 @ 060354m 10h 11m
16 Jul 2021 @ 19522h 16m
16 Jul 2021 @ 173629m 7h 39m
16 Jul 2021 @ 0957 wc2h 16m
16 Jul 2021 @ 0741 ie wc3h 13m
16 Jul 2021 @ 0428 ie wc6h 45m
15 Jul 2021 @ 2143 ie wc5h 27m
15 Jul 2021 @ 16162h 22m
15 Jul 2021 @ 135420m 4h 43m
15 Jul 2021 @ 09113h 11m 2h 28m
15 Jul 2021 @ 064342m 9h 47m
14 Jul 2021 @ 2056 wc2h 34m
14 Jul 2021 @ 18223h 24m
14 Jul 2021 @ 1458 ie2h 20m
14 Jul 2021 @ 12382h 20m
14 Jul 2021 @ 101822m 3h 21m
14 Jul 2021 @ 0657 ie14h 58m
13 Jul 2021 @ 15592h 25m
13 Jul 2021 @ 133441m 2h 1m
13 Jul 2021 @ 113332m 1h 29m
13 Jul 2021 @ 10045m 19m
13 Jul 2021 @ 094511m 23m
13 Jul 2021 @ 092215m 2h 53m
13 Jul 2021 @ 0629 ie8h 17m
12 Jul 2021 @ 221243m 2h 43m
12 Jul 2021 @ 192922m 26m
12 Jul 2021 @ 190316m 5h 44m
12 Jul 2021 @ 13195h 35m 5h 4m
12 Jul 2021 @ 081529m 39s 16h 8m
11 Jul 2021 @ 160711m 6h 48m
11 Jul 2021 @ 0919 ns30m 1h 3m
11 Jul 2021 @ 081628m 30m
11 Jul 2021 @ 07466m 14m
11 Jul 2021 @ 07322m 18h 37m
10 Jul 2021 @ 1255 ie5h 26m
10 Jul 2021 @ 072918m 14h 44m
09 Jul 2021 @ 1645 ie wc7h 40m
09 Jul 2021 @ 0905 ie wc2h 22m

Interval Statistics

Interval Count100
Min14m
Max18h 37m
Mean3h 51m
Median2h 31m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
18651 25 Jul 2021 @ 1008 --- dandersen Sawmill off by 1008
18645 25 Jul 2021 @ 0635 --- dandersen Sawmill of by 06:34.
18644 25 Jul 2021 @ 0616 --- dandersen Sawmill of by 0616
18643 25 Jul 2021 @ 0555 --- dandersen Off sometime during Castle's eruption. Noticed off at 05:55.
18619 24 Jul 2021 @ 0657 --- JoeN quit before 0657
18618 24 Jul 2021 @ 0638 --- JoeN quit between 0626 and 0638
18614 23 Jul 2021 @ 1942 --- JoeN quit at 1942
18583 22 Jul 2021 @ 1613 --- JoeN quit ~ 1613
18575 22 Jul 2021 @ 1225 --- SteveO End 1225, pretty sure this is the 0534 wc eruption
18550 20 Jul 2021 @ 1749 --- JoeN sawmill is done,quit before 1749
18541 20 Jul 2021 @ 0613 --- JimS Eruption ended
18511 18 Jul 2021 @ 1707 --- SteveO Sawmill end at 1707, deep drain.
18495 18 Jul 2021 @ 0936 --- Brian Off and drained
18474 17 Jul 2021 @ 1402 --- JoeN off at 1402
18438 16 Jul 2021 @ 0607 --- JimS Ended 0607.
18494 15 Jul 2021 @ 1002 --- Brian off and drained
18417 14 Jul 2021 @ 1006 --- SteveO Deep drain, Twilight is drained.
18378 12 Jul 2021 @ 0636 12 Jul 2021 @ 0650 SteveO About am inch from overflow. 0650 water level dropping.
18364 11 Jul 2021 @ 1636 11 Jul 2021 @ 1646 SteveO Reached overflow 1636, overflow reached the river at 1646.
18358 11 Jul 2021 @ 1252 11 Jul 2021 @ 1320 SteveO Start overflowing 1252, overflow at 1308. Dropped back to just below overflow at 1320
18348 11 Jul 2021 @ 0810 --- SteveO Thumping with 1 splash.
18409 11 Jul 2021 @ 0747 --- Brian ended and drained (again)
18336 10 Jul 2021 @ 0717 10 Jul 2021 @ 0724 SteveO 0717 Start overflowing, 0724 overflow reached the river.
18248 02 Jul 2021 @ 1940 --- Graham Approx time of overflow. Dropped 2003, no eruption. Overflowed forabout 23m.
18238 02 Jul 2021 @ 1444 --- dank In gentle overflow
18233 01 Jul 2021 @ 2002 --- Graham Start of ovwefloq down the channel.
18232 01 Jul 2021 @ 1928 --- Graham Start of overflow down the runoff channel. 15m after Spasmodic started.
18222 01 Jul 2021 @ 1419 --- Graham Start of overflow down runoff channel. Dropped 1437, 18m of overflow.
18220 01 Jul 2021 @ 1143 --- Graham In overflow down runoff channel but did not erupt.
18219 01 Jul 2021 @ 1105 --- Graham In overflow down runoff channel 13m after Spasmodic started. Tardy still ie.
18194 29 Jun 2021 @ 2048 --- Graham Already in overflow.
18145 27 Jun 2021 @ 1820 --- CrisG pool filling for possible 4th eruption. Unfortunately, I had to walk away. Great way to end a trip! Go Sawmill!!! Welcome back, old friend!
18178 27 Jun 2021 @ 1820 --- CrisG pool filling for probable 4th eruption. unfortunately I had to walk away. Great way to end a trip! Go Sawmill!!
18144 27 Jun 2021 @ 1702 --- CrisG 2nd channel overflow started
18176 27 Jun 2021 @ 1702 --- CrisG 2nd channel runoff started
18143 27 Jun 2021 @ 1649 --- CrisG start of first channel overflow between 1645 and 1649. Was below overflow at last pass-by at 1644.
18173 27 Jun 2021 @ 1649 --- CrisG start of first channel overflow between 1645 and 1649. was below overflow at last pass at 1644.
18112 27 Jun 2021 @ 0927 --- Janet Jones Nice wet area around it. Would guess it went earlier this morning.
18106 26 Jun 2021 @ 2120 --- Graham Dropped after Spasmodic quit. Did not erupt this cycle.
18105 26 Jun 2021 @ 1947 --- Graham Start of overflow between 1939 and 1947.
18103 26 Jun 2021 @ 1430 --- am In overflow
18084 25 Jun 2021 @ 1647 --- K.Cooper First overflow
18078 25 Jun 2021 @ 0535 --- JimS Pool very low. Nearly out of sight.
18076 24 Jun 2021 @ 2316 24 Jun 2021 @ 2347 Ben VL In overflow.
18067 24 Jun 2021 @ 0557 24 Jun 2021 @ 0629 Ben VL Orange bacteria in the rim is pretty much gone. In overflow 0604, below overflow by 0629.
18066 23 Jun 2021 @ 2110 --- Ben VL Thumped and splashed again. ~1.5'-2' on first splash. Tardy started a long major and it came back up and boiled significantly DURING Tardy but did not thump. Time of note approximate based on my bad sense of time and not checking the time. Luke has the time and I will delete this once he can get a note in.
18061 23 Jun 2021 @ 1616 --- K.Cooper Sawmill thumping and had one large splash.
18051 23 Jun 2021 @ 0732 --- JimS In overflow.
18048 23 Jun 2021 @ 0650 --- JimS Pool just below overflow and runoff channel wet to the river.
18047 22 Jun 2021 @ 2156 --- Ben VL In ovfl again at this time, probably more later.
18018 22 Jun 2021 @ 1631 22 Jun 2021 @ 1729 Ben VL Sawmill reached ovfl at 1631, right away the r-o was as about as strong as earlier. 1648 Water in second channel out of sawmill's pool connected to main channel flow. 1700 second channel disconnected. 1706 second channel flowing steadily. Convection seen on the vent. ...
18022 22 Jun 2021 @ 1632 --- Forestbewithyou Runoff started flowing down channel again
18021 22 Jun 2021 @ 1315 --- Forestbewithyou Sawmill runoff has made it past south scalloped spring
18020 22 Jun 2021 @ 1259 --- Forestbewithyou Sawmill is sending runoff down the channel past churn. It was doing this upon arrival at 12:59
18019 22 Jun 2021 @ 1236 22 Jun 2021 @ 1243 Forestbewithyou Sawmill has reached overflow. It is sending a small amount of water down the runoff channel. Sawmill dropped at 12:43
17997 22 Jun 2021 @ 0725 --- K.Cooper Water rising, some water flowing into the catch basins
17970 21 Jun 2021 @ 1658 --- K.Cooper Water starting to become visible
17975 21 Jun 2021 @ 1552 --- K.Cooper No water in sight
17946 20 Jun 2021 @ 1923 --- K.Cooper Parasite vent and spas on. Penta high and bubbling in the side vents. Tardy high and convection. Churn high and boiling. Sawmill high and about 6inches below overflow.
17912 19 Jun 2021 @ 1245 --- Craigmon99 Lower than inner ring. Spasmodic reported off 1215
17884 18 Jun 2021 @ 1231 --- Craigmon99 High. No evidence of water pushing over islands into catch basins though.
17866 17 Jun 2021 @ 1240 --- Craigmon99 At what this observer would call average. Seems late in spasmodic eruption with parasite vent going strong. No water in catch basins so no extended overflow in the last 4 hours.
17853 16 Jun 2021 @ 1551 --- Craigmon99 Currently raising
17834 15 Jun 2021 @ 1614 --- Craigmon99 Has lowered with spasmodic while I was away. 1629 raising without spasmodic eruption
17828 15 Jun 2021 @ 1411 --- Craigmon99 Has stopped raising since parasite vent of spasmodic has turned on. Is not draining, maintaining current levels and pulsing slowly 1423 Has begun to lower Water levels as a whole have begun to lower at above time as well.
17827 15 Jun 2021 @ 1351 --- Craigmon99 Still currently raising. Water has overflowed enough to enter separate pools in catch basin
17825 15 Jun 2021 @ 1339 --- Craigmon99 Water beginning to spill outside of main crater and into outer catch basins
17819 15 Jun 2021 @ 1314 --- Craigmon99 Is currently rising. MUCH hotter than yesterday. Dark brown algae is GONE. Bacteria that is present is bright orange leading into yellow but is clearly dying. Water in catch basin that was present yesterday is gone
17777 14 Jun 2021 @ 1550 --- Craigmon99 Visible blue/turquoise in middle of pool. Water pooled in northern catch basin. Unsure whether from rain or not
14583 10 Jun 2020 @ 1331 --- K.Cooper Foot below overflow
14575 09 Jun 2020 @ 1741 --- K.Cooper empty, water barely visible
14574 09 Jun 2020 @ 1632 --- K.Cooper 6 inches below overflow, orange cyanobacteria growing in the crater
14136 22 Feb 2020 @ 1443 --- Art Still dormant. Snow in runoff.
14032 14 Dec 2019 @ 0807 --- Micah Kipple Still very dormant. Snow piled up in Runoff channel and around crater rim.
13752 19 Sep 2019 @ 1455 --- TheHikingDude Water about 5 in above orange bacteria ring
13641 10 Sep 2019 @ 1118 --- kenreeves tardy overflowing, sawmill nearly full but not overflowing
13165 11 Aug 2019 @ 1325 --- aferrara Water in Sawmill ~2-3in below overflow, well above orange line.
13021 04 Aug 2019 @ 1440 --- Stephen_Gemar Water above orange bacteria line.
12915 01 Aug 2019 @ 1303 01 Aug 2019 @ 1309 rbwhitaker Was a few inches below the orange ring. At 1309 it has risen back up to the orange ring.
12875 30 Jul 2019 @ 2056 --- rbwhitaker The lighting was just right enough to be able to see a tiny amount of convection on the surface over the vent and a small amount of surging. Maybe a quarter to a half inch in amplitude. Water level was several inches above the orange line. It was also rising very slowly as I left.
12867 29 Jul 2019 @ 1050 --- rbwhitaker Three inches below orange ring
12827 28 Jul 2019 @ 0656 --- rbwhitaker Several inches above the orange ring, several inches below overflow. Small amount of steam on a cool morning
12817 27 Jul 2019 @ 0809 27 Jul 2019 @ 0814 Minafuku Water 4 inches below top of orange bacteria ring, about a foot below overflow. Water gently bouncing. Rising confirmed at 0830, now only an inch below top of bacteria.
12112 05 Jul 2019 @ 0927 --- Tara Water level at upper bathtub ring.
12091 03 Jul 2019 @ 1535 --- Tara Water level at upper bathtub ring.
12090 03 Jul 2019 @ 1356 --- Tara About 2 inches below bacteria line
12066 01 Jul 2019 @ 2100 --- Tara Water level at upper bathtub ring.
11928 23 Jun 2019 @ 1431 --- Tara About an inch below bacteria line.
11926 23 Jun 2019 @ 1357 --- Tara Water level at bathtub ring above bacteria line.
11911 22 Jun 2019 @ 1458 --- dank Water level four inches beneath top of orange.
11543 03 Jun 2019 @ 1050 --- udo Water level is rising and palpitating 1/2 to 1 inch. Still far below overflow but a few inches above orange cyanobacteria stain.
10922 27 Jan 2019 @ 0900 --- Graham Snowbound all week below overflow.
10607 13 Oct 2018 @ 1305 13 Oct 2018 @ 1545 Tara At 1305, Sawmill's water level was several inches lower than usual, along with Oval Spring, and Churn was down about 1 inch below overflow. at 1545 water levels had returned to normal, but Sawmill's runioff channel was partially melted and there was still some running water, indicative of weak overflow.
10190 14 Sep 2018 @ 0837 --- Micah Kipple Within an inch of ovf
9553 08 Aug 2018 @ 1843 --- Brian Water down substantially from yesterday, 2” below orange bacteria line
9493 06 Aug 2018 @ 1125 --- Tara Water level back up to bathtub ring level.
9492 06 Aug 2018 @ 1036 --- Tara Water level down about 2 inches below bacteria line and gently rocking. Water level down in the rest of the group (Tardy, Penta, Oval, and Spasmodic) as well.
9062 08 Jul 2018 @ 0930 --- hkoenig Water level ~10cm below top of orange band.
8075 04 May 2018 @ 1513 --- udo water level is down at top of orange bacteria ring.
8060 03 May 2018 @ 1131 --- Micah Kipple Water ~5 cm below ovf and rocking slightly.
EntrySourceLinkComment
29 Jun 2021 @ 1804 JoeN https://youtu.be/_ZoBDBk0jAE sawmill video
29 Jun 2021 @ 1316 JoeN https://youtu.be/RlJjBN-y8uQ Sawmill Video
29 Jun 2021 @ 0858 JoeN https://youtu.be/UnTBT1cponQ sawmill video
25 Jun 2021 @ 1217 EricZ https://youtu.be/TjakKh6tnEI Crummy Streaming cam capture, but the best we could do with it's current settings.
28 Aug 2013 @ 1755 JSJ https://www.youtube.com/watch?v=c--h2pgLjiE Video by Micah Kipple of the start of Sawmill's eruption.
02 Sep 2012 @ 1520 Micah Kipple http://www.youtube.com/watch?v=gSiAZb154IQ Sawmill in eruption after Grand.
10 Jul 2011 @ 2015 kcmule http://tinyurl.com/6zws8zr
BaselineDistance (ft)Description
South Side 50West side of the walk near Tardy Geyser