| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 38816 |
03 May 2025 @ 2133 |
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K.Cooper |
INCREDIBLE meteor lit up the entire back basin before exploding. Loud sonic boom rumble followed a minute later, enough to shake trees |
| 38809 |
03 May 2025 @ 2132 |
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aferrara |
Boom? Earthquake? heard/ felt in both Grant and Old Faithful near simultaneously |
| 38785 |
03 May 2025 @ 1240 |
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MAB |
from Constant bench steam behind the berm in N Porc beautifully prismatic! |
| 38553 |
20 Apr 2025 @ 0915 |
20 Apr 2025 @ 1445 |
DanS |
Gates on Firehole Lake Drive closed but no bear management closure. Road has not been plowed but is passable from entrance. Substantial snow blockage from Fountain exit gate. Road conditions decent.
Fountain Flat road also open. |
| 38381 |
28 Mar 2025 @ 1703 |
28 Mar 2025 @ 1758 |
DanS |
Wolves near Castle.
Also seen in same area this morning. |
| 38379 |
28 Mar 2025 @ 0035 |
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JarnoO |
Shockwaves from the M7.7 earthquake in Myanmar/Burma began passing through Yellowstone, especially noticeable from 0040 to 0258. |
| 38340 |
01 Mar 2025 @ 0856 |
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BrandonC |
Wapiti Pack at biscuit basin |
| 38293 |
23 Feb 2025 @ 1400 |
23 Feb 2025 @ 1600 |
K.Cooper |
Entire hillside by ledge thumping every few minutes with a audible constant rumbling/shaking |
| 38243 |
08 Feb 2025 @ 1630 |
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JSJ |
Shock waves from a magnitude 7.6 earthquake along the Swan Islands Transform Fault in the western Caribbean Sea arrived at Yellowstone's seismic network. |
| 38237 |
05 Feb 2025 @ 0818 |
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BrandonC |
Wolves at biscuit basin heading towards Artemesia |
| 38195 |
14 Jan 2025 @ 1439 |
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aferrara |
Coyote on geyser hill near Sponge |
| 37970 |
05 Dec 2024 @ 1147 |
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JarnoO |
Shockwaves from an M7.0 at the southern end of the Cascadia Basin (near the triple junction) began passing through Yellowstone at this time. |
| 37946 |
19 Nov 2024 @ 1530 |
--- |
rwd03 |
Fox on webcam! |
| 37910 |
03 Nov 2024 @ 0200 |
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JarnoO |
MDT -> MST; OFVEC static switched to MST at 1259 MDT |
| 37822 |
29 Oct 2024 @ 1215 |
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MAB |
flock of noisy ducks took off from Nuphar Lake |
| 37791 |
27 Oct 2024 @ 1149 |
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MAB |
2 fighter jets buzzed the basin from south to NE |
| 37536 |
12 Oct 2024 @ 1840 |
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Betty |
Wolves or Coyotes heard howling in Norris back basin |
| 37502 |
10 Oct 2024 @ 1300 |
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SantaFe108 |
NGB: Boardwalk still closed between Basin and the junction above Guardian. |
| 37467 |
10 Oct 2024 @ 0600 |
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JarnoO |
The SWPC forecasts an aurora visible tonight from "maybe as far south as Alabama to northern California", in association with a fast coronal mass ejection in the evening of October 8. |
| 37452 |
08 Oct 2024 @ 2315 |
--- |
Ben VL |
Faint aurora visible in UGB. Small pillars for a couple mins. |
| 37442 |
08 Oct 2024 @ 1251 |
--- |
JarnoO |
(wc) Couple with a (tame) golden parakeet or sun conure (former seems more likely) off the trail on the path towards the Beehive viewing platform across the river. Parrot had been placed in the dead tree located where the boardwalk starts, after which pictures/videos were taken of it. On trail again 1253. |
| 37438 |
07 Oct 2024 @ 2015 |
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Ben VL |
Aurora visible on the horizon in the UGB. A bit better than last night. ~2020 about 5-10 mins of nice activity. Tall pillars and saturated reds. No waves |
| 37454 |
07 Oct 2024 @ 0054 |
--- |
JarnoO |
Shockwaves from an M4.1 east of Dillon (MT) passed through Yellowstone beginning this minute. Even showed up on normally insensitive seismographs, such as YNM and YNB. |
| 37424 |
06 Oct 2024 @ 2045 |
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Ben VL |
Extremely weak Aurora visible in UGB. |
| 37400 |
04 Oct 2024 @ 1715 |
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cb |
path in front of Ledge is closed from the intersection coming up from Crackling Lake to the Basin Geyser intersection. Must take new bw past Congress now. |
| 37254 |
29 Sep 2024 @ 1004 |
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TSBryan |
had been told of muddy springs and possible disturbance but today minimal murkyness in all Back Basin springs. However Tantalus Creek distinctly muddy at bridge near Vixen; later was told "we've been seeing that." |
| 37211 |
28 Sep 2024 @ 1505 |
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ddshepard |
Two men walked to edge of Brilliant Pool (in front of Comet). I yelled at them and they left. |
| 37208 |
28 Sep 2024 @ 0945 |
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Graham |
New boardwalk from Porcelain Basin overlook by the Museum to Congress Pool provides nice wheelchair access to the existing boardwalk down to Porcelain Basin. The old gravel trail was hard going. |
| 37196 |
27 Sep 2024 @ 1930 |
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Graham |
Many wolf watchers out at Biscuit Basin again. |
| 37190 |
27 Sep 2024 @ 1110 |
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Tara |
Trail to geyser Hill currently open, bison is well Upstream of bridge |
| 37187 |
27 Sep 2024 @ 0917 |
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ddshepard |
Grey wolf just south of Biacuit Basin. Appears to be eating a carcass. Lots of cars stopped.
- Still there as of 16:10 |
| 37180 |
26 Sep 2024 @ 1845 |
--- |
PMGuernsey |
Pack of 4 wolves just south of biscuit basin. Large black one in the river. |
| 37172 |
26 Sep 2024 @ 0949 |
--- |
Graham |
Black wolf at Biscuit Basin |
| 37013 |
16 Sep 2024 @ 1219 |
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Ben VL |
Two tour busses parked in the hams lot, the two combined blocking over a third of the available spots. |
| 36996 |
15 Sep 2024 @ 1629 |
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JarnoO |
Shockwaves of an M6.5 at Queen Charlotte Sound passed through Yellowstone beginning this minute. |
| 36991 |
15 Sep 2024 @ 1313 |
--- |
Tara |
Grizzly bear strolling past Black Diamond on the broken boardwalk, casually ignoring closure signs |
| 36975 |
14 Sep 2024 @ 1410 |
--- |
Pholli |
boardwalk repairs from grotto to giant completed. no longer any closure |
| 36864 |
09 Sep 2024 @ 1010 |
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CP |
The boardwalk from Grotto to Oblong is open. |
| 36815 |
06 Sep 2024 @ 1825 |
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Dave W |
Firehole Lake Drive is now closed until 2nd wooden bridge (which has a 1 1/2 to 2 foot hole in it) can be repaired. Ranger stated road will be closed for about 2 weeks. |
| 36751 |
04 Sep 2024 @ 1649 |
--- |
LynnS |
There’s a small fire next to the west entrance road. The road is open but some pullouts and Riverside Are closed. |
| 36743 |
04 Sep 2024 @ 1234 |
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Ben VL |
2x car alarm dool in the parking lot somewhere |
| 36754 |
04 Sep 2024 @ 1200 |
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steve |
The boardwalk from the bridge to grotto geyser will be replaced over the next two weeks. |
| 36733 |
04 Sep 2024 @ 0700 |
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SteveO |
Backhoe with forks hauling bunks of lumber down basin on the asphalt path. |
| 36628 |
30 Aug 2024 @ 1353 |
--- |
Scott H |
NPS is closing Madison-West from 1430 to 1525 for emergency road repair. |
| 36522 |
23 Aug 2024 @ 1758 |
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Kyle |
Traffic accident on loop road, southbound lane. 0.8 miles north of OF exit. 0.7 miles south of Daisy Trail turnout
large RV vs small sedan. traffic control and ambulance on the scene |
| 36336 |
09 Aug 2024 @ 1600 |
--- |
JarnoO |
(wc) Conewalkers (one in white, one in black) at Three Sisters, on the Little Brother and Three Crater side of the pool. The person in white walked on the edge of the pool at Little Brother and again at Three Crater; they're lucky the former erupted only seconds after they had passed. Reached the road mid-1601. |
| 36266 |
04 Aug 2024 @ 1222 |
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minissa |
Tourists with a child walking around on sinter at 3 Sisters. North pool is still not quite refilled |
| 36237 |
02 Aug 2024 @ 2315 |
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Joel |
Somebody just drove their car up to morning glory as I was walking back. Washington plate, not NPS |
| 36183 |
30 Jul 2024 @ 2010 |
30 Jul 2024 @ 2020 |
EmilyW |
3 powerful, close and, positive lightning strikes that shook the cabins during this time. |
| 36058 |
23 Jul 2024 @ 1209 |
23 Jul 2024 @ 1212 |
JarnoO |
(wc) Helicopter flew a couple of rounds somewhere downbasin in line of Artemisia. Given recent events (read: Black Diamond eruption) it was likely a short survey of its immediate surroundings. |
| 36053 |
23 Jul 2024 @ 1103 |
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aferrara |
biscuit to be closed for immediate future |
| 35837 |
11 Jul 2024 @ 0912 |
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JarnoO |
M6.4 (1508:47 UTC/0908:47 MDT) at the Cascadia Basin west of Vancouver Island, on the Juan de Fuca Ridge halfway between Seminole and Springfield seamounts. A couple show the P waves passing through beginning 0912 (including YMC, YNR, YLT, YHL, YMV), with S waves showing up well starting 0915 on all seismographs (even the normally insensitive ones like YNB, YMR; perhaps with exception to YNM). |
| 35820 |
10 Jul 2024 @ 0924 |
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Dan A |
Water seen erupting from the left side of the old faithful inn above the third story, duration ~2.5m, Major, went into mixed steam phase about 1.5m into eruption estimated at 30’ down per Ben VL, loud eruption. |
| 35732 |
05 Jul 2024 @ 1703 |
--- |
Art |
FLD (Firehole Lake Drive) reported opened to motor vehicle traffic. |
| 35684 |
02 Jul 2024 @ 1815 |
--- |
aferrara |
Fighter jets making low passes over the UGB |
| 35555 |
25 Jun 2024 @ 1437 |
--- |
Craigmon99 |
Dust devil turned pollen devil ripped through lower hamms and up geyser hill by bronze. Personally pelted with loads of sand but luckily saw it coming to guard my face. Cool! But also ow. |
| 35563 |
25 Jun 2024 @ 1417 |
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Darcie |
Black collared wolf in the flat between great fountain and pink cone |
| 35203 |
14 Jun 2024 @ 1005 |
--- |
CrisG |
2 military jets flying over Upper Basin again |
| 35151 |
12 Jun 2024 @ 1632 |
--- |
CrisG |
2 military jets flew over Upper Basin |
| 35267 |
11 Jun 2024 @ 1955 |
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Siegmund |
Mountain goat west of Black Sand Basin. It was pointed out to me by an OF-area employee who said "she came to BSB with her morning coffee every day to look for the goat." Visitor Center had only 1 previous report of the goat from a week previously. It's the only one I've seen in 30 years of looking at that cliff. |
| 35265 |
11 Jun 2024 @ 1015 |
11 Jun 2024 @ 1100 |
Siegmund |
Convoy of 4 NPS trucks on Firehole Lake Loop. Parked for some time at Pink Cone ~1040. |
| 35108 |
10 Jun 2024 @ 1635 |
--- |
CrisG |
West Thumb boardwalk closed from just north of Blue Funnel to to intersection north of Twin for doe elk with calf hanging out. |
| 34949 |
06 Jun 2024 @ 1636 |
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JSJ |
Two military fighter jets flew over the Lower Geyser Basin. Four of them flew over the Upper Geyser Basin yesterday afternoon. |
| 34770 |
30 May 2024 @ 1551 |
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Pat Snyder |
Cones moved back so Grand is accessible again. |
| 34762 |
30 May 2024 @ 0928 |
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ge |
Walkways still blocked at Castle and just after Grand |
| 34753 |
29 May 2024 @ 1430 |
--- |
aferrara |
Wildlife closure at Grand moving to Sawmill. |
| 34749 |
29 May 2024 @ 0928 |
--- |
Tara |
There has been an FRS radio announcement that due to wolves feeding on a bison carcass, the north part of UGB will be closed. The closure includes the bike path beyond Castle and boardwalks beyond Grand, the Daisy trail, and the Artemisia trail. |
| 34607 |
18 May 2024 @ 0930 |
--- |
Janet Jones |
Ice out is underway. Lots of ice also piled up at MaryBay and Sedge Bay. |
| 34555 |
14 May 2024 @ 1451 |
--- |
BigSkyKatie |
griz sow with two 2nd year cubs crossed from Castle area to just east of Grand then turned eastward and disappeared into trees going in the direction of the Lion Group |
| 34552 |
14 May 2024 @ 1247 |
--- |
Lizzysa |
Has stopped snowing |
| 34513 |
10 May 2024 @ 1630 |
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Tara |
3 bears seen along edge of trees north of Thud Group, probably the same 3 grizzlies from this morning. |
| 34496 |
10 May 2024 @ 1135 |
--- |
Tara |
Sow grizzly with 2 near-grown cubs foraging in the meadow near Mary Mountain TH. (edit: originally said 3 cubs, sorry about the typo) |
| 34275 |
20 Apr 2024 @ 1500 |
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RMichaels |
OF bike path has been plowed and is rideable down to Fan and Mortar. |
| 34274 |
19 Apr 2024 @ 1135 |
--- |
MAB |
NGB: NUPHAR FULL within maybe ~20-30ft of Trail Closed sign - not much steam from atop Porcelain Terrace indicating flow into the lake but that whole visit was tough to see due to swirling steam - possibly some changes near Grindstones and the 1970s blowouts and whatever I tried I could not photograph - need a warmer day |
| 34207 |
18 Apr 2024 @ 1740 |
--- |
aferrara |
Energetic steam vent north of Wall Pool occasionally spritzing water. Another small boiling feature further north. |
| 34159 |
05 Apr 2024 @ 1053 |
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ltgangi |
Grizzly bear on geyser hill. mostly in woods but did walk boardwalk across the back towards aurum and then back on ground. One or two bison were around and it didnt seem like it wanted to share space with them. Lost him when he walked deeper into the woods. |
| 34061 |
22 Feb 2024 @ 0915 |
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aferrara |
Visitors reported wolves howling near Pipeline Meadows |
| 34060 |
22 Feb 2024 @ 0828 |
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Kat |
Wolves noted in front of Oblong (07:58) followed as they walked the boards to the hill. There was a small rally in front of Lion, wolves exited the view to the rIght of Dome. Count of 12. Appears to be Wapitis |
| 33029 |
18 Dec 2023 @ 1412 |
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JarnoO |
Webcam functioning again |
| 32728 |
12 Dec 2023 @ 1341 |
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JarnoO |
(wc) Low helicopter flyby |
| 32064 |
04 Dec 2023 @ 1501 |
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JSJ |
YNM station is finally online. |
| 29489 |
05 Nov 2023 @ 0100 |
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DaveM |
MST, Mountain Standard Time started. MDT ended at 02:00. |
| 28896 |
20 Oct 2023 @ 1324 |
--- |
Betty |
Webcam is back on |
| 28895 |
20 Oct 2023 @ 1049 |
--- |
OFVEC |
Webcam is down |
| 28618 |
04 Oct 2023 @ 0919 |
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JarnoO |
(wc) Helicopter flew across the background while cam was on Old Faithful |
| 28551 |
29 Sep 2023 @ 1915 |
29 Sep 2023 @ 1930 |
ThomasR |
Wolf pack at Fountain Flat easily viewable from road. |
| 28523 |
28 Sep 2023 @ 0710 |
--- |
CraigC |
Bull elk west of Firehole Lake Drive South gate. |
| 28476 |
26 Sep 2023 @ 1100 |
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Tara |
Group of 4 otters fishing and playing in the Firehole at the small cascade near Cascade |
| 28336 |
18 Sep 2023 @ 2110 |
--- |
OFVEC |
Northern lights visible in the UGB. International Space Station passed over Old Faithful at 2125 |
| 28318 |
17 Sep 2023 @ 1805 |
--- |
SantaFe108 |
Surprise Pool's runoff has built a nice mineral terrace on the sidewalk and in the road on Firehole Lake Dr. |
| 28122 |
08 Sep 2023 @ 0815 |
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Pat Snyder |
Two large bison herds (moms and youngsters) moving through Fountain Flats causing a traffic jam. They were heading towards Fountain. |
| 27774 |
25 Aug 2023 @ 1330 |
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LynnS |
A trash bin has been placed at the Fairy Falls trailhead. |
| 27714 |
21 Aug 2023 @ 1645 |
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Tara |
Heavy downpour in UGB with hail and gusty winds, lasted about 10 minutes. |
| 27387 |
02 Aug 2023 @ 1412 |
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Polly |
“YNP: North bound road from Old Faithful is now open for all travel.” |
| 27385 |
02 Aug 2023 @ 1111 |
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Polly |
“YNP: West Thumb Junction to Old Faithful is now open. The northbound lane from Old Faithful to Madison remains closed.” |
| 27384 |
02 Aug 2023 @ 1020 |
--- |
Polly |
“YNP: Temporary road closure from Madison Junction, south, to West Thumb Junction due to hazards on roadway. Notification will be sent once safe” |
| 27380 |
02 Aug 2023 @ 0613 |
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EmilyW |
Drive in from west has an absurd amount of debris from the construction. Starts before fountain flats.
Horrendous between grand prismatic overlook and biscuit. |
| 27372 |
01 Aug 2023 @ 0615 |
--- |
JarnoO |
Per this month's Yellowstone update: "A small section of boardwalk between Sponge Geyser and Doublet Pool remained closed during July due to the proximity of thermal features that had been spattering hot water and some debris onto the pathway, but that closure will be lifted soon." Materialized August 29 per in-basin entry. |
| 27309 |
28 Jul 2023 @ 2120 |
--- |
SantaFe108 |
Driving NB out of Norris, very strong sulfuric smell coming from the basin. |
| 27239 |
26 Jul 2023 @ 0040 |
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ypcaribou |
Norris GB. Smelled very sulfury as he drove by southbound from Norris junction. (As in a noticeable increase in odor.) |