| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 22425 |
18 Aug 2022 @ 1212 |
--- |
ThomasR |
Sign still at previous location and upright. Seriously doubt previous entry. |
| 21694 |
03 Jun 2022 @ 1818 |
--- |
Mkeller |
Between 1445 and 1800 platform was very weak similar to post marathon. Bijou started waking up around 1700. There was one pause at 1728 where water was barely visible in the front vent of Mastiff from the railing. Bijou came on strong about 45 seconds later. Very weak splashing in Giant otherwise. |
| 20938 |
02 Apr 2022 @ 1110 |
--- |
Mkeller |
In 50 minutes there was no Bijou pause but it would slow down every 6-15 minutes. So so surges in Giant, never put any water out. Back Mastiff splashed a few times to a couple of feet. |
| 20347 |
13 Nov 2021 @ 1138 |
--- |
Mkeller |
Between 0930-1130 Bijou slowdowns every 6-15 minutes but no true pauses. Occasional surges half way up the cone from Giant. Frequent 4-8 foot splashes from Catfish and occasional surges from back Mastiff. |
| 19053 |
22 Aug 2021 @ 1100 |
--- |
Mkeller |
Spent about 80 minutes at Giant. Bijou would slow down every 6-15 minutes but never paused. Frequent 2-8 foot eruptions from Catfish. Occasional boiling seen in back Mastiff. Giant had 2 surges that put water out the front of the cone. No hot periods taking place. |
| 16505 |
07 Nov 2020 @ 0915 |
--- |
Mkeller |
Grotto in marathon. Bijou dead, platform dry. |
| 16106 |
13 Sep 2020 @ 1140 |
13 Sep 2020 @ 1240 |
SteveO |
1140 Bijou slow down
1152 Bijou slow down
1204 Bijou slow down
1217 Bijou slow down
1224 Bijou slow down
1232 Bijou slow down
Infrequent low left to right splashing in Giant's cone. Bijou was weak, most splashes 2 feet or less. Platform mostly dry, wet in the usual spots. |
| 15671 |
21 Aug 2020 @ 1859 |
--- |
Mkeller |
Between 1745-1900 frequent surges up to the bite, no sloshing out the front. One very weak Bijou pause at 1852 that lasted about 25 seconds. Weak jets to a few feet from Catfish. No surges over the rim seen from back Mastiff. |
| 15596 |
16 Aug 2020 @ 0900 |
--- |
Mkeller |
Between 0705 and 0900 Bijou slowdowns every 15-18 mi utes but no true pauses. Sloshing in Giant up to the bite and occasionally out the front of the cone. Back Mastiff surging over the rim. No evidence of any recent hot period activity. |
| 14578 |
10 Jun 2020 @ 0759 |
--- |
K.Cooper |
Bijou is on strong, small mastiff splashing, Giant is occasionally surging angled to a few feet. |
| 14232 |
21 May 2020 @ 1644 |
--- |
Mkeller |
Between 1455-1630 frequent angled surges into the bite with 2 periods of sloshing out the front. Bijou slowdowns every 7-13 minutes but no true pauses. |
| 14198 |
18 May 2020 @ 1737 |
18 May 2020 @ 1801 |
Janet Jones |
I went down to check on F&M and stopped off at Giant because there was water on the platform. Took a quick photo - noticed that Bijou was off and headed to F&M where there was a tiny bit of water standing, but not enough to say it erupted. Back to Giant by 1755. Still no splashing visible in Giant. Checked the GIP and couldn't see any water from the boardwalk. 1758 saw one small spike from Catfish, and a bit later just one visible angled splash in Giant. The odd thing is that the standing water by the viewing platform had microbes growing in it. I have videos on my Instagram account https://www.instagram.com/yellowstonenaturalist and photos and videos on FB on the geyser discussion group. OH - and Marathon Pool was lower and near boiling - sort of at that point between heavy bubbles rising and boiling. |
| 14145 |
28 Feb 2020 @ 1627 |
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Mkeller |
Between 1400 and 1515 one Bijou pause that lasted about 80 seconds. Frequent sloshing up to the bite in Giant but nothing out of the cone. Back Mastiff had a few splashes and Catfish was frequently erupting to a few feet. No evidence of hot periods. |
| 14081 |
21 Jan 2020 @ 1050 |
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Graham |
Snow bank across the front of the whole Giant platform. No eruption or hot period recently. |
| 12421 |
29 Jun 2019 @ 1512 |
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Polly |
I could hear SW Vents clunking (bubbling below the surface) from the boardwalk while I was watching Grand. (I heard this same clunking sound often in 2017.) |
| 11535 |
03 Jun 2019 @ 0558 |
--- |
Kyle |
platform dry around HP vents. no sign of a hot period. Bijou continues to not pause |
| 11482 |
01 Jun 2019 @ 2040 |
--- |
Mkeller |
No Bijou pauses from 1940-2035. Back Mastiff had 4 or 5 episodes with surging over the rim. Giant surges into the bite with occasional sloshing out the front. Reversed jetting from Giant at 1955 lasted about 2 minutes |
| 11263 |
18 May 2019 @ 1045 |
--- |
Mkeller |
Between 0920 and 1045 Bijou was perpetual but would weaken every 13-22 minutes and almost pause. Mastiff occasionally seen splashing. Giant frequent surges 1/4 to 1/2 way up the cone. |
| 11260 |
17 May 2019 @ 2030 |
--- |
Mkeller |
Bijou fully recovered and perpetual. No pause seen between 1920-2015. Front and back Mastiff frequently splashing over their rim. Giant had frequent surges from 1/3 to 3/4 up the cone with occasional sloshing out the front. |
| 11256 |
17 May 2019 @ 1510 |
--- |
Mkeller |
Bijou very weak, a few spits every few seconds. Weak bursts from front Mastiff. Giant having occasional surges about 1/3 of the way up the cone. |
| 11175 |
05 May 2019 @ 0730 |
05 May 2019 @ 1020 |
RLJones |
I did not observe a pause in Bijou during this entire time. I did leave for 30m to watch Riverside. I checked the GIP numerous times and the water level was constant at a very low level.
L to R splashes in Giant occured fairly frequently rising about 1/4 up the cone. 2-3FT bursts occur occasionally from the back of Massif |
| 11152 |
03 May 2019 @ 1320 |
--- |
Mkeller |
Observations from 1320-1400. Bijou perpetual, Mastiff front vent steady depth charging. Nothing seen in back Mastiff. Giant frequent surging every couple of minutes out the front with 7-8 surges over the back of the cone. No evidence of recent hot periods. |
| 11031 |
20 Apr 2019 @ 1130 |
--- |
RMichaels |
Watched Giant for 40 min. Bijou on strong the whole time, not even a slowdown. Vigorous activity from Mastiff's rear vent. Some occasional vertical splashing in Giant's cone. This is exactly how it's looked every time I've passed by the last two days. No sign of a recent hot period. |
| 10970 |
04 Apr 2019 @ 1130 |
--- |
Bijoumonkey |
Giant sign repositioned by NPS. No evidence of an eruption since 3/16/19. |
| 10950 |
22 Feb 2019 @ 1148 |
--- |
novakg |
Snow on platform. signs not rolled. |
| 10941 |
07 Feb 2019 @ 1217 |
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ddshepard |
Upon further observation there is thin layer of snow on the crust the equivalent depth of the amount of snow that fell last night. Snow started around 7 PM so I believe eruption actually occurred on the early evening of 2/6. We left Giant at about 4:30 PM on 2/6 and there had been no eruption. |
| 10940 |
06 Feb 2019 @ 1630 |
07 Feb 2019 @ 1110 |
ddshepard |
Giant erupted sometime after 4:30 PM on 2/6. Heavy crust on snow near Path SE of walkway; Giant sign out of place |
| 10936 |
03 Feb 2019 @ 0950 |
--- |
DaveM |
Giant was either post eruptive or in a pause. Nothing from Bijou, steaming from Giant but snow on the platform. Snow could have been from this morning. Conditions not conducive to extended observation. |
| 10927 |
27 Jan 2019 @ 0850 |
--- |
Graham |
Bijou slowed dowm, Mastiff quiet. SW vents barely steaming. Slowing down due to long Grotto |
| 10872 |
20 Jan 2019 @ 0930 |
--- |
novakg |
Giant platform is dead. Bijou is not erupting right now. Maybe a Grotto marathon? I don’t know. |
| 10772 |
15 Dec 2018 @ 1057 |
--- |
Bijoumonkey |
Yesterday’s eruption confirmed. Signs are rolled, Bijou just starting to spit again as of 1100. |
| 10762 |
07 Dec 2018 @ 1347 |
--- |
Betty |
Steam drift from the left side at 1347 when OF area was in view. At 1350 cam turned left and the big steam plume was visible. If it was not Giant I will delete this note |
| 10758 |
01 Dec 2018 @ 1233 |
--- |
JSJ |
GOSA playback shows a big, wind-blown steam plume in the right place, appearing to last between 1 and 1.5 hours. |
| 10717 |
04 Nov 2018 @ 0830 |
--- |
steve |
No overnight eruption |
| 10708 |
03 Nov 2018 @ 1110 |
--- |
steve |
No eruption overnight |
| 10703 |
02 Nov 2018 @ 1128 |
--- |
steve |
For the last 10 minutes Bijou has been off with no water in Mastiff and even the sw vents are quiet with no steam. Grotto is on, maybe a Grotto marathon. |
| 10672 |
28 Oct 2018 @ 1633 |
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steve |
The danger sign and the giant sign were rolled, one to just above India and the other to the right side of the cage. |
| 10671 |
28 Oct 2018 @ 1129 |
--- |
steve |
Geology will be in the ugb to replace the signs on Wednesday |
| 10561 |
05 Oct 2018 @ 0930 |
--- |
Tara |
No eruption overnight. |
| 9978 |
01 Sep 2018 @ 1708 |
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Graham |
Water seen over the ridge on the webcam at 1708. Big puff of steam earlier at 1707 could have been Mastiff. |
| 9901 |
28 Aug 2018 @ 0545 |
--- |
SteveO |
No Giant yet. |
| 9607 |
10 Aug 2018 @ 1904 |
10 Aug 2018 @ 1905 |
JSJ |
Seven minutes after end of hot period, Giant had sustained, wide, subvertical (very slightly angled to the left) surging above the cone for ~0.25 to 0.5 minutes. |
| 9558 |
08 Aug 2018 @ 2114 |
--- |
Brian |
Unattended at 2115 |
| 8827 |
20 Jun 2018 @ 2349 |
--- |
Tom C. |
Tara's write up of the GHP is excellent and contains more info than I could have recalled. I'd just add that Catfish and B-C vent (which I've called "Crawdad" for years, without any support) were also active to varying degrees throughout the GHP, but never notable enough for me to include in my calls. But that's not the point of this note. I'd just like to say that the Grotto which preceded the GHP was still ie. right through the Giant start. It was 7 min. shy of 2 hrs. in duration at that point. It had 'tried' and failed to have a Rocket major for ~ 20 min. from about the 1 hr. to 80 min. mark. The previous Giant (6/9/18) was preceded by about a 2 hr. Grotto that also 'tried' and failed to have a Rocket major from about the 1 hr. mark until it just gave up and quit without a Rocket. So, 2 data points. Use them recklessly. Also, Grotto started again within 10 min. of Giant ending. |
| 8878 |
19 Jun 2018 @ 1223 |
--- |
Polly |
Surge from A & B vents almost out of the cone. (Also vertical surges at 1236 - A & B 1' , 1238 - B vent 2' , 1248 B vent.) |
| 8733 |
16 Jun 2018 @ 1820 |
--- |
Polly |
Unattended |
| 8871 |
16 Jun 2018 @ 1224 |
16 Jun 2018 @ 1800 |
Polly |
Periodic vertical surges in Giant (1-3 feet, but mostly 1 foot). |
| 8700 |
15 Jun 2018 @ 1854 |
--- |
Mkeller |
Two minute cycle of reverse jetting over 1/2 way up Giant's cone |
| 8970 |
14 Jun 2018 @ 1342 |
14 Jun 2018 @ 1400 |
Polly |
Periodic vertical surging in Giant 1-2' high. |
| 8580 |
08 Jun 2018 @ 2130 |
--- |
WillBoekel |
unattended |
| 8513 |
06 Jun 2018 @ 1749 |
--- |
WillBoekel |
unattended |
| 8172 |
13 May 2018 @ 0550 |
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SteveO |
No Giant yet, I've gone to Norris. |
| 8165 |
12 May 2018 @ 1215 |
12 May 2018 @ 1227 |
Polly |
Numerous good-sized splashes both vertical and right to left in Giant’s cone. |
| 8257 |
11 May 2018 @ 0820 |
11 May 2018 @ 1800 |
Polly |
Energy has shifted overnight. Bijou is behaving normally with pauses. (No steam phase in Bijou observed.). Giant has more normal-looking surges. Mastiff is much calmer today, with occasional splashes, depth charging, and occasional bathtubs. Observations were at various time spans during the day. |
| 7966 |
06 Apr 2018 @ 1330 |
--- |
Bijoumonkey |
Giant sign and "Stay On Walk" sign have rolled off the platform. |
| 7940 |
07 Feb 2018 @ 0850 |
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Dave from B |
Giant and Mastiff signs have moved/rolled. Possible eruption between Sat, Feb 3 1312 (Graham's last post) and 1600 Tuesday, Feb 6 (NPS OFVEC ) |
| 7897 |
30 Jan 2018 @ 0730 |
--- |
Graham |
Back to normal now, no depth charging. |
| 7892 |
29 Jan 2018 @ 1456 |
--- |
Graham |
Some vertical splashes. Over several hours there were occasional vertical splashes the width of the cone, not reaching the bite. A few vertical spikes on the left side reached the bite. |
| 7890 |
29 Jan 2018 @ 1350 |
--- |
Graham |
Giant doing some left to right splashes out of the cone and Mastiff is depth charging. More water than I saw yesterday. |
| 7700 |
10 Oct 2017 @ 1823 |
--- |
WillBoekel |
Mastiff sign has moved and the giant sign is not under the boardwalk but certainly moved (it is approximately 15 feet from the boardwalk) and facing the wrong direction. Hope this helps. |
| 5459 |
27 Aug 2017 @ 1325 |
27 Aug 2017 @ 1425 |
minissa |
Noted voluminous steam not Bijou while awaiting Grotto. Sat in cage through several short (2 min) Bijou pauses. Noted depth charging in back Mastiff plus some frank splashing with decent volume although only 1-2 feet in height, also some vertical (B Vent?) splashing from Giant. However, the activity in Mastiff was not coordinated with Bijou pauses and I did not see water rise in front Mastiff with any pause. Back Mastiff was ejecting quite a bit of water and steam overall, though |
| 3959 |
03 Mar 2017 @ 1233 |
--- |
steve |
All the signs are in place at Giant, frozen in place |
| 2637 |
24 Dec 2015 @ 1230 |
--- |
Tara |
Platform covered in snow, no eruption since 9/28/15. |
| 2471 |
04 Oct 2015 @ 0710 |
--- |
JimS |
Bijou strong. Mastiff depth charging. |
| 2467 |
03 Oct 2015 @ 1904 |
--- |
WillBoekel |
Foot bath for about 30 sec |
| 2463 |
03 Oct 2015 @ 0815 |
--- |
JimS |
Platform quiet. Bijou quiet. Trying to recover from Grotto marathon. |
| 2450 |
01 Oct 2015 @ 0700 |
--- |
JimS |
Bijou strong. Grotto eruption now is not a continuation of yesterday's marathon. |
| 2448 |
30 Sep 2015 @ 2105 |
30 Sep 2015 @ 2310 |
Jake |
Post Grotto marathon...Bijou off. occasional light spitting from Catfish. Nothing out of Mastiff but steam. Giant noisy with occasional water visible. Light steam from Feather. |
| 2445 |
30 Sep 2015 @ 1630 |
--- |
Jake |
Bijou off. Grotto in marathon. |
| 2436 |
29 Sep 2015 @ 0820 |
29 Sep 2015 @ 1000 |
JimS |
Bijou strong with no pauses. Mastiff depth charging strongly to 1 or 2 feet at times. Catfish some sprinkling. Water in Giant with left to right splashing at times. |
| 2433 |
28 Sep 2015 @ 1415 |
--- |
Tara |
Water visible in Giant. Everything else on the platform was gently steaming. |
| 2430 |
28 Sep 2015 @ 0834 |
--- |
JimS |
Found that the Giant sign was rolled under the cage and lots of water on the boardwalk north of Giant platform. Danger sign also looks moved and grass in runoff channel flattened. Certainly looks like a Giant eruption. |
| 1193 |
11 Jul 2014 @ 1200 |
11 Jul 2014 @ 1800 |
JSJ |
Giant Geyser was engaged in its usual small to moderately small splashing - observed in the afternoon of 11 July 2014. |
| 1050 |
25 Apr 2014 @ 0000 |
--- |
WillBoekel |
Logs are still on the platform :( |
| 1225 |
04 Jun 2013 @ 1200 |
04 Jun 2013 @ 1800 |
JSJ |
Giant Geyser was engaged in its usual, intermittent, visibly low splashing eruption behavior - observed in the early afternoon of 4 June 2013. |
| 774 |
20 Apr 2013 @ 0000 |
20 Apr 2013 @ 2359 |
WillBoekel |
Signs are still on the platform. Please wake up Giant!!! |
| 953 |
28 Apr 2008 @ 0000 |
28 Apr 2008 @ 2359 |
BoekelUpload |
signs washed; see 4/16; marker replaced |
| 950 |
05 Apr 2008 @ 0000 |
05 Apr 2008 @ 2359 |
BoekelUpload |
signs replaced 4/5 see 4/4 |
| 949 |
26 Mar 2008 @ 1835 |
--- |
BoekelUpload |
signs replaced 18:35 -- see 3/22 |
| 938 |
12 Feb 2008 @ 0000 |
12 Feb 2008 @ 2359 |
BoekelUpload |
signs replaced |
| 936 |
11 Feb 2008 @ 0000 |
11 Feb 2008 @ 2359 |
BoekelUpload |
overnight, see 2/9 [Note: No eruption overnight 2/11] |
| 933 |
05 Feb 2008 @ 0000 |
05 Feb 2008 @ 2359 |
BoekelUpload |
signs replaced 2/5 |
| 928 |
29 Jan 2008 @ 0930 |
--- |
BoekelUpload |
signs replaced ~ 09:30 |
| 732 |
26 Jan 2008 @ 0000 |
27 Jan 2008 @ 2359 |
Tara |
Giant signs washed sometime on January 26 or 27. |
| 921 |
14 Jan 2008 @ 0915 |
--- |
BoekelUpload |
signs replaced ~ 09:15 |
| 919 |
13 Jan 2008 @ 1630 |
--- |
BoekelUpload |
signs still in place as of ~16:30 or so |
| 914 |
04 Jan 2008 @ 1430 |
--- |
BoekelUpload |
signs replaced~14:30 |
| 1302 |
22 Dec 2007 @ 0930 |
--- |
BoekelUpload |
signs replaced ~09:30 |
| 740 |
14 Dec 2007 @ 0000 |
20 Dec 2007 @ 2359 |
Tara |
Giant eruption occurred sometime between December 14 and December 20, 2007. No further information is available. |
| 1301 |
20 Dec 2007 @ 0945 |
--- |
BoekelUpload |
sign straightened ~ 9:45; eruption between 12/14 - 12/20 |
| 1300 |
14 Dec 2007 @ 0000 |
14 Dec 2007 @ 2359 |
BoekelUpload |
signs in place |
| 741 |
03 Dec 2007 @ 0000 |
07 Dec 2007 @ 2359 |
Tara |
Eruption inferred sometime between December 3 and December 7, 2007. No further information is available. |
| 1299 |
07 Dec 2007 @ 1510 |
--- |
BoekelUpload |
between 12/3 |
| 1298 |
29 Nov 2007 @ 0000 |
29 Nov 2007 @ 2359 |
BoekelUpload |
"Danger sign replaced (Giant sign frozen under platform) |
| 1297 |
21 Nov 2007 @ 1500 |
--- |
BoekelUpload |
signs replaced 15:00 |
| 1296 |
17 Nov 2007 @ 1700 |
--- |
BoekelUpload |
signs replaced 17:00 |
| 1295 |
04 Oct 2007 @ 2000 |
05 Oct 2007 @ 0800 |
BoekelUpload |
overnight 10/4-10/5 |
| 1294 |
22 Sep 2007 @ 2000 |
23 Sep 2007 @ 0800 |
BoekelUpload |
overnight 9/22-9/23 |
| 3888 |
09 Sep 2006 @ 0645 |
--- |
Tara |
Water visible in Emerald Vent during marathon recovery. |
| 858 |
10 Jul 2006 @ 1006 |
--- |
Tara |
Bathtub 1006. |