Last Known Eruption
4h 32m ago

Latest Eruptions

Eruption DurationInterval
30 Apr 2025 @ 1759 maj9m 5h 22m
30 Apr 2025 @ 1237 min16m
30 Apr 2025 @ 1221 min9m
30 Apr 2025 @ 1212 min12m
30 Apr 2025 @ 1200 min1h 48m
30 Apr 2025 @ 1012 ie wc maj20h 40m
29 Apr 2025 @ 1332 min18m
29 Apr 2025 @ 1314 min5h 16m
29 Apr 2025 @ 0758 wc min1h 41m
29 Apr 2025 @ 0617 ie wc maj18h 13m
28 Apr 2025 @ 1204 min1d 2h 2m
27 Apr 2025 @ 1002 min14h 47m
26 Apr 2025 @ 1915 min11m
26 Apr 2025 @ 1904 min19m
26 Apr 2025 @ 1845 min32m
26 Apr 2025 @ 1813 min2h 4m
26 Apr 2025 @ 1609 ie wc maj1h 37m
26 Apr 2025 @ 1432 wc2h 0m
26 Apr 2025 @ 1232 ie wc maj23h 51m
25 Apr 2025 @ 1241 ie1h 54m
25 Apr 2025 @ 1047 wc13m
25 Apr 2025 @ 1034 wc23h 25m
24 Apr 2025 @ 1109 ie maj30m
24 Apr 2025 @ 1039 min12m
24 Apr 2025 @ 1027 min14m
24 Apr 2025 @ 1013 min23m
24 Apr 2025 @ 0950 min12m
24 Apr 2025 @ 0938 min9m
24 Apr 2025 @ 0929 min15m
24 Apr 2025 @ 0914 min1h 18m
24 Apr 2025 @ 0756 ie wc maj19h 12m
23 Apr 2025 @ 1244 min13m
23 Apr 2025 @ 1231 min13m
23 Apr 2025 @ 1218 min12m
23 Apr 2025 @ 1206 min51m
23 Apr 2025 @ 1115 ns wc1d 55m
22 Apr 2025 @ 1020 min2h 9m
22 Apr 2025 @ 0811 ie wc maj1h 17m
22 Apr 2025 @ 0654 wc maj14m
22 Apr 2025 @ 0640 ie wc12h 22m
21 Apr 2025 @ 1818 ie wc maj5h 3m
21 Apr 2025 @ 1315 wc19h 29m
20 Apr 2025 @ 1746 ie wc maj48m
20 Apr 2025 @ 1658 maj38m
20 Apr 2025 @ 1620 min2m
20 Apr 2025 @ 1618 min8m
20 Apr 2025 @ 1610 min5h 21m
20 Apr 2025 @ 1049 min1h 54m
20 Apr 2025 @ 0855 ie wc18h 54m
19 Apr 2025 @ 1401 wc25m
19 Apr 2025 @ 1336 wc28m
19 Apr 2025 @ 1308 ie wc4h 31m
19 Apr 2025 @ 0837 ie wc maj18h 7m
18 Apr 2025 @ 1430 min11m
18 Apr 2025 @ 1419 min20m
18 Apr 2025 @ 1359 min13m
18 Apr 2025 @ 1346 min28m
18 Apr 2025 @ 1318 min28m
18 Apr 2025 @ 1250 min25m
18 Apr 2025 @ 1225 min12m
18 Apr 2025 @ 1213 min18m
18 Apr 2025 @ 1155 min31m
18 Apr 2025 @ 1124 min29m
18 Apr 2025 @ 1055 min10m
18 Apr 2025 @ 1045 min16m
18 Apr 2025 @ 1029 min42m
18 Apr 2025 @ 0947 maj10m 1d 18h 17m
16 Apr 2025 @ 1530 wc31m
16 Apr 2025 @ 1459 wc maj1h 2m
16 Apr 2025 @ 1357 wc maj49m
16 Apr 2025 @ 1308 ie wc maj53m
16 Apr 2025 @ 1215 wc min1h 24m
16 Apr 2025 @ 1051 wc min23m
16 Apr 2025 @ 1028 wc min2h 4m
16 Apr 2025 @ 0824 ie wc maj2h 9m
16 Apr 2025 @ 0615 wc maj10h 3m
15 Apr 2025 @ 2012 wc min17m
15 Apr 2025 @ 1955 wc min26m
15 Apr 2025 @ 1929 wc maj33m
15 Apr 2025 @ 1856 ie maj1h 29m
15 Apr 2025 @ 1727 wc maj1h 48m
15 Apr 2025 @ 1539 wc maj41m
15 Apr 2025 @ 1458 wc maj43m
15 Apr 2025 @ 1415 wc maj20m
15 Apr 2025 @ 1355 wc min40m
15 Apr 2025 @ 1315 wc min2h 37m
15 Apr 2025 @ 1038 wc maj48m
15 Apr 2025 @ 0950 wc maj1h 42m
15 Apr 2025 @ 0808 wc maj11h 52m
14 Apr 2025 @ 2016 wc maj38m
14 Apr 2025 @ 1938 ns wc44m
14 Apr 2025 @ 1854 wc maj48m
14 Apr 2025 @ 1806 ns wc30m
14 Apr 2025 @ 1736 min39m
14 Apr 2025 @ 1657 ns wc maj34m
14 Apr 2025 @ 1623 ie wc maj48m
14 Apr 2025 @ 1535 ie wc maj1h 6m
14 Apr 2025 @ 1429 min9m
14 Apr 2025 @ 1420 wc31m
14 Apr 2025 @ 1349 wc maj36m

Interval Statistics

Interval Count100
Min2m
Max1d 18h 17m
Mean3h 53m
Median40m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
38477 18 Apr 2025 @ 1507 --- Graham Has been splashing occasionally but not erupting.
35296 17 Jun 2024 @ 1724 --- K.Cooper consistent low splashing
35274 17 Jun 2024 @ 0806 17 Jun 2024 @ 0832 Forestbewithyou Failed eruptions at 8:06, 8:09, 8:11,8:14,8:17,8:20,8:23,8:26,8:30,8:32
35257 16 Jun 2024 @ 1734 --- Forestbewithyou Failed eruption
35252 16 Jun 2024 @ 1456 --- Forestbewithyou Failed eruption
35180 13 Jun 2024 @ 1417 --- Forestbewithyou Fail. Leaving it unattended now
35179 13 Jun 2024 @ 1412 --- Forestbewithyou Play Price is Right losing music here. Fail
35178 13 Jun 2024 @ 1403 --- Forestbewithyou Failed
35177 13 Jun 2024 @ 1352 --- Forestbewithyou Failed eruption
35175 13 Jun 2024 @ 1337 --- Forestbewithyou Attempted eruption
35174 13 Jun 2024 @ 1300 --- Forestbewithyou Failed eruption
35173 13 Jun 2024 @ 1250 --- Forestbewithyou A pitiful attempt… like one splash
35172 13 Jun 2024 @ 1236 --- Forestbewithyou Attempted to erupt but failed
35169 13 Jun 2024 @ 1145 --- Forestbewithyou Attempted eruption. No water in hole during attempt
34863 03 Jun 2024 @ 1304 --- SantaFe108 Strong attempt to erupt.
34224 19 Apr 2024 @ 1830 --- SantaFe108 Failed eruption.
28124 08 Sep 2023 @ 1618 --- K.Cooper Splashing heavily but not commiting
27630 15 Aug 2023 @ 2330 --- Ben VL Splashing episodes but no additional eruption by this time.
27361 31 Jul 2023 @ 1745 31 Jul 2023 @ 1750 Brian episodes of weak splashing at: 1745 1748 1750
27360 31 Jul 2023 @ 1720 31 Jul 2023 @ 1741 Brian episodes of weak splashing at: 1720 1723 1726 1728 1731 1733 1736 1741
27359 31 Jul 2023 @ 1659 31 Jul 2023 @ 1713 Brian episodes of weak splashing at: 1659 1702 1705 1707 1711 1713
27356 31 Jul 2023 @ 1642 --- Brian weak splashing inside crater
27354 31 Jul 2023 @ 1629 --- Brian ~10sec of weak splashing inside crater
26612 23 Jun 2023 @ 0946 23 Jun 2023 @ 1017 Forestbewithyou Failed eruption at: 9:48, 9:54,9:57, 10:00, 10:02, 10:05 1007 10:11 10:13 10:16 Additional note, may have had a minor/major shortly before my arrival. Parts of the cone outside are wet.
26603 22 Jun 2023 @ 2013 22 Jun 2023 @ 2030 Forestbewithyou Failed eruptions at: 2013 2026 There are so many mosquitoes out here…
26623 18 Jun 2023 @ 0941 18 Jun 2023 @ 1012 Forestbewithyou Failed eruptions at 9:42, 9:47, 9:49, 9:55, 10:02, 10:06, 10:12
26622 17 Jun 2023 @ 1922 17 Jun 2023 @ 1936 Forestbewithyou Failed eruptions at 1922,1925,1928,1930,1934,1936
26621 17 Jun 2023 @ 1844 17 Jun 2023 @ 1900 Forestbewithyou Failed eruptions at 1844,1848,1852,1855,1858
26620 17 Jun 2023 @ 1801 17 Jun 2023 @ 1816 Forestbewithyou Failed eruptions at 1801,1803,1806,1808,1810,1813,1816
26619 17 Jun 2023 @ 1635 17 Jun 2023 @ 1701 Forestbewithyou Failed eruptions at 1636, 1638, 1641,1644,1647,1649,1652,1655,1658,1701
26618 17 Jun 2023 @ 1424 --- Forestbewithyou Failed eruption
26617 17 Jun 2023 @ 1350 --- Forestbewithyou Failed eruption
26616 17 Jun 2023 @ 1311 17 Jun 2023 @ 1328 Forestbewithyou Failed eruptions at 1311, 1317, and 1328
26185 09 Jun 2023 @ 0725 --- K.Cooper Failed attempts every few minutes
26098 06 Jun 2023 @ 2050 06 Jun 2023 @ 2057 SantaFe108 Failed eruptions at: 2050 2053 2057
26096 06 Jun 2023 @ 1932 06 Jun 2023 @ 1936 SantaFe108 Failed eruptions at: 1932 1936
26094 06 Jun 2023 @ 1919 --- SantaFe108 Failed eruption.
25711 22 May 2023 @ 2015 22 May 2023 @ 2100 SantaFe108 Having failed eruptions every 3 minutes. Each fail is followed by weak filling and dropping in Bulger's Hole. 2007 major likely end of series.
25577 20 May 2023 @ 1032 --- SantaFe108 Failed eruption.
25439 14 May 2023 @ 1805 --- SantaFe108 Failed eruptions every 3 minutes.
25396 13 May 2023 @ 1124 --- SantaFe108 (wc) Failed eruption.
25304 30 Apr 2023 @ 1907 --- SantaFe108 Failed eruptions every few minutes.
24914 16 Jan 2023 @ 0830 --- Graham Having frequent heavy splashes in last 45min, not erupting.
24901 14 Jan 2023 @ 1426 --- Graham Switched to heavy splashing every few minutes after the last minor.
24872 11 Jan 2023 @ 1255 11 Jan 2023 @ 1509 Graham No eruption, just splashing every few minutes.
24853 09 Jan 2023 @ 1035 --- Graham Heavy splashes every few minutes. No more eruptions.
24564 30 Oct 2022 @ 1658 --- SantaFe108 Failed eruptions every 3 minutes.
24429 16 Oct 2022 @ 1824 --- SantaFe108 Having failed eruptions every 2 minutes. Being very annoying.
23585 05 Sep 2022 @ 1344 --- Graham Splashed and pooled water. No eruption in last 6.5h.
23445 27 Aug 2022 @ 1948 --- SantaFe108 LONG failed eruption, ~1m long! Did not fill up the crater.
23444 27 Aug 2022 @ 1942 --- SantaFe108 Failed eruption.
23443 27 Aug 2022 @ 1936 --- SantaFe108 Failed eruption.
23276 19 Aug 2022 @ 1447 --- SantaFe108 Failed eruption.
23274 19 Aug 2022 @ 1405 --- SantaFe108 Failed eruption.
22173 28 Jun 2022 @ 0852 --- K.Cooper Attempted eruption
22256 08 Jun 2022 @ 2229 09 Jun 2022 @ 0100 SantaFe108 Did not attempt an eruption or had visible water of any kind for the rest of the night. Occasionally, gurgling would increase in volume but did not amount to anything. Bulger pretty much went to sleep for the night.
21850 08 Jun 2022 @ 2039 08 Jun 2022 @ 2133 SantaFe108 Bulger had an eruption attempt every 2-5 minutes (averaging 3 minutes) during this period.
21845 08 Jun 2022 @ 1715 08 Jun 2022 @ 1828 Forestbewithyou Bulger was quite busy. Had many failed attempts at erupting. Apologies in advance for this long list: 1715, 1719, 1722, 1725, 1729, 1732, 1735, 1738, 1741, 1744, 1747, 1750, 1753, 1756, 1759, 1802, 1805, 1809, 1812, 1815, 1818, 1821, and 1825. Man my finger hurts now.
21835 08 Jun 2022 @ 1509 08 Jun 2022 @ 1516 Forestbewithyou Failed start at 1509 and 1515. Interesting note: Shortly after the 1515 fail, Bulger’s hole filled with water to about 1/2 full with mildly boiling water
21831 08 Jun 2022 @ 1258 --- Forestbewithyou Failed eruption
21828 08 Jun 2022 @ 1156 --- Forestbewithyou Failed eruption
21818 07 Jun 2022 @ 2141 --- SantaFe108 Failed eruption attempt.
21808 07 Jun 2022 @ 1441 07 Jun 2022 @ 1445 Forestbewithyou Failed eruptions at 1441 and 1445
21801 06 Jun 2022 @ 1826 --- Forestbewithyou Fail eruption
21807 06 Jun 2022 @ 1219 06 Jun 2022 @ 1337 Forestbewithyou Had failed eruptions at 1219 1221 1224 1227 1230 1236 1239 1242 1244 1246 1250 1253 1256 1259 1304 1306 1309 1313 1316 1320 1326 1328 1331 1337. Left after 1337
21782 06 Jun 2022 @ 1215 --- Forestbewithyou Failed eruption… what a surprise
21783 06 Jun 2022 @ 1104 06 Jun 2022 @ 1107 Forestbewithyou Two failed eruptions at 11:04 and 11:07… Left after 11:07
21775 06 Jun 2022 @ 1100 --- Forestbewithyou Failed eruption.
21761 05 Jun 2022 @ 1729 --- Forestbewithyou Another failed eruption… Bulger is on fire today
21760 05 Jun 2022 @ 1724 --- Forestbewithyou Wow another failed eruption…
21759 05 Jun 2022 @ 1719 --- Forestbewithyou Another failed eruption
21758 05 Jun 2022 @ 1707 --- Forestbewithyou Attempted eruption but failed
21507 25 May 2022 @ 2310 25 May 2022 @ 2325 Micah Kipple Resumed it's repetitive eruption attempts every 3 minutes.
21506 25 May 2022 @ 2005 25 May 2022 @ 2140 Micah Kipple Approximately every 3 minutes, Bulger would grumble, boil, splash, and surge up to a foot above the rim for about a minute.
21040 19 Apr 2022 @ 1350 19 Apr 2022 @ 1445 RMichaels Splashed every few minutes for durations of 30-90 seconds. Some splashes ejected water from the crater, so the activity could technically be considered a long series of weak minors. After observing for a while it just seemed like pre-play building up to the next major. The intervals were not consistent like long series of minors observed in prior seasons.
20727 18 Jan 2022 @ 0952 18 Jan 2022 @ 1232 Graham No eruption during this period.
20709 16 Jan 2022 @ 1730 --- Graham No eruption in last 2 hours. Frequent splashing, sometimes lasting a minute.
19634 17 Sep 2021 @ 1056 --- Graham Splashed but did. or erupt.
18702 28 Jul 2021 @ 0635 28 Jul 2021 @ 0745 Kyle Bulger had no pool splashing within the cone but no eruption every few minutes following the 0635 minor eruption.
18585 22 Jul 2021 @ 1215 22 Jul 2021 @ 1700 SteveO 1215 to 1700 no Buger eruptions occured.
18384 12 Jul 2021 @ 1245 --- JarnoO (wc) One burst and done, "minor minor".
18218 01 Jul 2021 @ 1041 --- Graham Splashed but did not erupt.
17887 18 Jun 2021 @ 1710 --- Craigmon99 There is a 3rd vent on bulger that participates in major eruptions. Located behind the mouth and on top of the right shoulder. Photo will be attached when I have service
17830 15 Jun 2021 @ 1417 --- Craigmon99 New to me seeping vent on top of bulgers right shoulder and above front vent. If this is not new I will delete. Will add picture with better service
15670 21 Aug 2020 @ 1821 --- Forestbewithyou Appears to be post eruptive.
15414 06 Aug 2020 @ 1702 --- JSJ Very weak splashing just above ground level from 1702 to 1703.
14191 15 May 2020 @ 1524 15 May 2020 @ 1703 JarnoO (wc) Have not observed Bulger since its 1524 ie wc maj eruption in this timeframe, despite the camera frequently panning back and forth between the Hill and downbasin. During the full timeframe Grand was erupting, no Bulger was observed either.
14083 21 Jan 2020 @ 1205 --- Graham Still no eruption.
13115 08 Aug 2019 @ 1308 08 Aug 2019 @ 1646 JSJ All closed intervals.
13101 07 Aug 2019 @ 1212 07 Aug 2019 @ 1616 JSJ All closed intervals.
12954 02 Aug 2019 @ 1318 02 Aug 2019 @ 1406 rbwhitaker No additional eruptions in this time frame, after the one that started at 1318.
11579 04 Jun 2019 @ 1213 04 Jun 2019 @ 1955 JSJ All posted Bulger eruptions between these times are closed intervals.
9482 05 Aug 2018 @ 1815 --- Micah Kipple Still no eruption since ~1630
9479 05 Aug 2018 @ 1638 05 Aug 2018 @ 1738 Micah Kipple No eruption. Periodically grumbled and boiled at depth with occasional spits coming into view.
9454 03 Aug 2018 @ 1246 03 Aug 2018 @ 1250 JSJ Light, brief splashing at 1246 and 1250.
EntrySourceLinkComment
06 Aug 2020 @ 1249 JSJ https://www.flickr.com/photos/jsjgeology/50214442641 Photo (1 of 2) of Bulger Geyser's 12:49 PM-onward eruption on 6 August 2020.
10 Aug 2018 @ 1505 JSJ https://www.youtube.com/watch?v=xjf_ugkdftw#t=1m27s Video clips (time stamp 1:27 to the end) of Bulger Geyser's 3:05 to 3:14 PM eruption on 10 August 2018.
03 Aug 2018 @ 1329 JSJ https://www.youtube.com/watch?v=xjf_ugkdftw Video clips (beginning to time stamp 1:26) of Bulger Geyser's 1:29 to 1:39 PM eruption on 3 August 2018.
31 Jul 2017 @ 1500 JSJ https://www.youtube.com/watch?v=88UoDqEg17c Clips 1-3 of this video compilation (beginning to time stamp 0:49) show Bulger Geyser's 3:00 to 3:08 PM eruption on 31 July 2017. The rest of the video shows other eruptions that day.
31 Jul 2017 @ 1626 JSJ https://www.flickr.com/photos/jsjgeology/35977700814 Photo (out of 2) of Bulger Geyser's 4:26 to 4:32 PM eruption on 31 July 2017.
18 May 2015 @ 1922 JSJ https://www.flickr.com/photos/jsjgeology/18251560601 Photo of Bulger Geyser's 7:22 to 7:28 PM eruption on 18 May 2015.
Baseline does not exist.