Category: Activity Report

Since I was coming in the South Entrance anyhow, and I had already been told the last Grand and Beehive times I decided that I should at least stop by and see if King Geyser was still active and at least make an attempt to see it. That was my first visit to West Thumb in years, and during the 45 minutes I was there all I saw was periodic boiling. Maybe I'll stop again on the way out.

Tilt Geyser 2010 Jul 17




Tilt Geyser 2010 Jul 17

Heading out to Grand I received a pleasant surprise. When I walked up on Tilt, it was pulsating with occasional bubbles coming up from both vents. It's been years since I've seen an eruption from the start. Since I had plenty of time, I waited there a bit, only to have the pulsations get heavier, with increased overflow, along with more bubbling. Finally, the western/right vent started to erupt. The total duration of the eruption was 3m24s, and there were occasional droplets well above my head. So from what I remember, this was a fairly typical and normal eruption.

At Grand, got a Vent overflow delay, with Grand erupting 4 Turban intervals later. The eruption itself came near the end of the West Triplet window, about two hours after the start of West Triplet. The eruption itself was an ordinary short one burst. (You can tell it was short because Vent and Turban didn't pause.)

This morning Fan & Mortar could have erupted in daylight with no one around. I'd been up since 05:30, and not hearing anything from that part of the basin, decided I had to know what was going on. I got down there about 06:45 and found the area deserted. Fortunately the marker was still in place and the walkways showed no sign of wash. But still, at over 5 days, with a large crowd of geyser groupies in the area and even an expert or too in attendance, you'd think that one of those folks would have comet at dawn.

The weather was no excuse. There'd been no rain overnight, and it was pretty calm and relatively cloud free (at least compared to this past week). As it was, everyone got lucky as F&M appeared to be in a garbage mode, a mode that persisted all morning.

Tilt Geyser blowout

I didn't check Tilt on the way to Grand as I usually do, so it wasn't until walking back that I noticed that it had cleared out the red scum and muck which had been choking the vent. I think I checked it yesterday, so that would put the eruption, such as it was, overnight. While standing there and taking photos, the pool pulsated for a minute or so, then dropped well below the rim.

With the relatively nice day, and since I was already down at that end of the basin, I also decided to check out the Giant platform. Wasn't quite as dead as I'd expected. At first I thought the water standing on the platform indicated something might have happened, but later evaluation by myself and some others was that Mastiff and Giant are just really splashing hard, enough to keep the puddles in front of them wet and full. It probably means that Giant just might erupt in September.

Overnight Grand had a short interval, and followed that up with one that was just within my window. So glad I'm not going to be here anymore to fight with it. The morning eruption was probably under the best conditions I've seen this trip, with sunlight most of the time, and even a second burst. It started only about 40 minutes after the end of Rift's eruption, so it might even be said that it appeared in the proper West Triplet window.

By having the morning eruption go on a short interval also meant that there was now a chance for one more daylight eruption, at sunset.

Once again, Beehive erupted at almost the same time as Grand, this time starting during the second burst. That also meant that once again, there were several hours of nothing to do. Fan & Mortar did fill that gap, either.

The weather stayed fairly nice until the time for Grand approached. By the time I got out there, it was already sprinkling, and I spent the wait under an umbrella. Once again, Grand erupted about 2.5 hours after West Triplet.This was a little long, as indicated by West Triplet starting during the first burst.

At that point I made a mistake. The first call of a possible event at Fan & Mortar was made. I considered just heading in and getting ready to go home, but the idea of missing an eruption down there just didn't appeal. Even though I know that those things never give me a break or cooperate. This was no exception. Spent another hour and a half in the rain. The only thing of interest is that once Fan's vents started to die down, Upper Mortar started having splashes, the kind that can possibly build into an Upper Mortar initiated eruption. But after a couple of good meter high plumes, it died down and it was time to bike in in the dark.

Started out the day by seeing a coyote nosing around my cabin. Then out at Grand saw the first elk of the season, when a couple of them wandered through over by Economic.

The morning itself was dry, but overcast and windy, making it much more miserable than it needed to be. I decided that I didn't need to be out until 8 hours, and arrived just at the end of a West Triplet eruption, so everything worked out. Grand did wait almost 2.5 hours, which makes for a bigger window than I'd like, but still one about an hour wide.

Fan & Mortar didn't erupt overnight, so they could have been the timewaster of the day. Turns out they cooperated in their not erupting. Made two round trips down there, the first from the cabins in the morning after Grand, the second, from Grand right after the eruption. In both cases arrived for Bottom Vent activity which led to normal looking activity from the Fan vents. So the middle of the day was free to do nothing much, but at least not spent out in the showshowers and wind.

We finally got a Beehive eruption. There was a rumor that it erupted last night at or before midnight, so it appears that the reason it was missed yesterday was because it had also erupted shortly before dawn.

That evening Grand I mentioned was post-Rift, which is a case where the West Triplet window doesn't really apply, at least for now. In the past there used to be a period post-Rift where Grand wouldn't normally erupt, and with some observations, it might be determined that that's still the case.

On my back from my morning attempt to make yesterday's posting, I saw something new: someone who'd driven onto the pedestrian walkway/emergency road to get to the OF entrance road. Another reason I take the trolley to work instead of playing in traffic twice a day.

Not much to report. Another dreary gray day with not much going on. Beehive either erupted during the night, or can have intervals much greater than 24 hours, as it wasn't seen during daylight.

After the long wait at night I got out to see another long wait. Coming to the conclusion that the 7 hour interval was unite an outlier and needs to be ignored when going out in poor conditions. West Triplet is providing a couple of eruption windows, the first with its early interval eruption around 7 to 8 hours, the second about 1.5 to 2 hours after the stat of an eruption. West Triplet itself is erupting with intervals of around 2.5 to 3 hours.

If the NPS were a flexible organization, and there were people around to make the changes, it would be easily possible to adjust the Grand predictions based on this information, reducing the current (and wrong) 4 hour window to a smaller one hour one. It just requires someone to see West Triplet erupt.

(The current Grand window is from 6.5 to 10.5 hours, which means that the first half of the window the NPS provides to the public is not only useless, but actually making it harder for visitors to see an eruption. Right now, there's no one with any authority or motivation to get that window changed, either.)

So after multiple intervals of 10 hours, and none shorter than 8.5, I decided no reason to be out any earlier. I was looking forward to going out in the dark and experiencing a dawn (as long as it wasn't raining, like it did overnight). So I get out to Rift in eruption and an empty crater. So it appeared that Grand finally took advantage of the early West Triplet window instead of delaying for two hours like it had been doing earlier this week.

That's what can be really annoying at Grand, the inconsistency. The length of the interval is irrelevant (at least once it gets up to 8 hours). But the range, jumping from ten hour intervals down to a seven and then probably more tens, is what gets frustrating. It leads to a lot of two or three hour waits, unless you are willing to forego those short intervals. (which is fine if you are letting others do your waiting for you…)

So for the mid-day eruption, came out early, and of course Grand erupted two hours after West Triplet for a nice 10 hour interval. And almost like yesterday, Beehive's Indicator started right as Grand was ending. So at that point, I had nothing more to do, and with rain heading in, too.

Went out to the evening Grand at a break in the rain. But first I had to dodge a small herd of bison who were moving through the trees next to the Lower lift station. Then, when I got out to Grand, I noticed a coyote nosing around the rocks behind Rift. Apparently I didn't bother it.

Right as I got there, West Triplet started. I hoped that this was a good sign that it would be a short wait, at worst getting the eruption in a couple of hours for a nice 9 hour interval. Instead, that time came and went, and then the rain returned. Finally, West Triplet started at the ten hour mark, with Rift joining in at midnight. At least Grand didn't wait the full two hours, just an hour and a quarter.

The rain also had stopped by then, and at least it was a two burst eruption. Might actually have been better to delay one more Turban as the moon came out right after the end.

After a clear night, it was a gray, overcast morning. No rain, but the threat was there. While waiting I heard that West Triplet had started at the 7h30m mark in the interval, so I figured there might be a chance that this could be a short interval. No such luck. Once again, it took Grand two hours after West Triplet to erupt.

Geyser Hill was reopened. There didn't seem to be a mad rush to get over there. Depression still erupting about every two-and-a-half to three hours.

For the evening eruption, Grand took the opportunity to delay just long enough to completely avoid the intermittent sunshine coming through the clouds. During its eruption, it appears that Beehive's Indicator started and so did Beehive.

There is nothing quite as creepy as the lock-step over-reaction of neo-Victorian bureaucrats. This year it's all the little signs advertising "bezerk gunmen welcome here" on all the building doors that just reinforces that feeling.

Put together an overnight eruption of Fan & Mortar and a bear closure of Geyser Hill and you get a number of people standing around with the look you get on an old dog whose food dish has been moved from the spot it's been in the last few years.

So Fan & Mortar did erupt overnight, and based on the amount of water still on the walkway at 08:00, I'm guessing just before daylight. Castle had a dawn minor, and Grand appears to have had another long interval.

For me the morning was one of watching GeyserHill from the parking lot, working on a project and watching a woodpecker trying to work on the tree next to the bike rack. (Whenever people would walk by, it would fly off, only to reappear a few minutes later. So there must be something to like there.) The weather itself was nice, a little breezy at times, but a great improvement from previous days.

The early afternoon Grand eruption was a pretty unspectacular 1 burst which this time was only an hour and a half after West Triplet.

I wasn't sure if I wanted to go out for the middle of the night eruption of Grand. The day had become overcast, and before sunset (which couldn't be seen), there was even a sprinkle or two. I decided that maybe I should stay in, when I noticed the moon was visible. SInce I could at least get out with some light, decided to go out.

It cleared as I waited, but it was really steamy. At one point, I heard a bison or two grunting away over by Calida. There was other wildlife out and about too: drunken Amfac louts were making noises, but I never saw any until after the Grand eruption. Even Sawmill had quit by then, so they were going out only for exercise.

The eruption of Grand was spectacular in its own way. Rift had just finished when I arrived, so no need to worry about West Triplet. Finally there was a Turban that had all the right sounds for an eruption, and Grand's pool looked steamy than before. But the Turban eruption just kept on going, with no Grand. Finally, at 3m18s, Grand took off. It was so steamy over toward Turban that I couldn't see what Vent might have done.

With that long to get started, I was half-expecting a short one burst, so not surprised when the first burst ended after only 7m36s. This had to mean a second burst, which I did get. After it ended, I could hear Vent blasting away, a sign that the pool was probably trying to refill and a third burst was possible. It took 1m13s before that finally happened, and once it was over, so was Vent and Turban. SoI would have liked to have seen exactly what they were doing back in that steam, it was still enjoyable.

I woke up at what might have been the 9 hour mark if Grand hadn't yet erupted, but with the snow and cold and such, it seemed like I wouldn't get out there by the 10 hour mark. So I stayed in, and Grand had a second interval longer than 10 hours.

I've seen several eruptions of Depression the last few days, including a couple of intervals of about 3 hours. Quite a change from my last visits when one Depression eruption per day was about it.

Bison herd at Grand

The walk out to Grand was delayed for a bit by a herd of bison that probably numbered over one hundred. For at least an hour they came down from the hillside behind Grand and Rift and crossed over to the flats to the northwest.

Turns out the bison delay didn't matter, as once again Grand waited two hours from the start of a West Triplet eruption before itself erupting. And once again, there was a considerable period (75 seconds) between the start of Turban and the start of Grand. At the 9m30s mark, Grand had a false pause at least 5 seconds long. So it was a bit surprising that both Vent and Turban didn't quit with Grand.

The odds of walking up onto an eruption of a geyser measured in days is low. The odds of that happening the very first time you walk up to that geyser are even lower. So when you walk up and see what appears to the activity which may lead to an eruption, your first assumption should not be that you are going to see an eruption. Especially when an eruption would lead to an unusually short interval when compared to recent intervals.

So some advice I don't expect to be followed: not only find out what the geyser has been doing recently, but also at least spend a few minutes determining if it really is going to lead to an eruption before you begin a radio play-by-play.

I may or may not have a full Geyser Groupie rant later in the week. That was just a sample.

Early morning snow accumulation

Woke up to a winter wonderland, as the photos show. There was about four inches of wet snow on the ground, and about as much slush on the roadways. The boardwalks had a little layer of slush at the bottom making them extremely slippery.

Sawmill with bison herd and Grand's runoff

Also during the wait for Grand an eagle perched on one of the dead trees behind Grand for about an hour. (No photo, as the clouds and sleet and my camera wouldn't have shown anything.) A bison herd also passed through on its way to Geyser Hill.

The big surprise though, was that West Triplet was in overflow but not erupting. For about ninety minutes I watched have about five minute long overflows with 12 to 19 minutes intervals. Finally, the overflow increased in intensity and upwelling began to appear over the vent. After a couple of minutes of that, a burst finally occurred.

The activity appeared no different from what I've seen the last few days. WIth its start, West Triplet was quickly joined by Percolator. The eruption lasted a bit less than 31 minutes, again nothing unusual, and Percolator quit with it. Rift make no attempt to start, as only once did I even see a whisp of steam form it.

At the end of the Grand eruption West Triplet's water level was near the point where it could erupt, but I didn't stick around long enough. A few hours later I came back and it appeared that both West Triplet and Rift had erupted while I was gone.

The evening's eruption of Grand was a bit of a disappointment. I was hoping for another West Triplet overflow, but all we got was a normal eruption followed by the two hour wait until Grand. All while waiting in windy snow showers. And because it had warmed up during the day, it wasn't sticking but was just getting everything wet.

So the West Triplet overflow may have been some fluke, for reasons unknown.

So after I did yesterday's posting, I noticed a couple of rangers park over behind the Lodge and head over to Geyser Hill for a while. Then later I saw one carrying a new signboard over that same way. The next morning, on my way back from Grand, saw one finishing a patrol. Perhaps the fact that prints would be visible in the snow kept people out.

Woke up to a light overnight dusting of snow and watching an eleven hour interval of Grand from my cabin window. I had been planning on getting up around then, so I didn't have to endure the wait, but it did mean there'd be no reason to go out for a while if the weather remains nasty.

Outside my cabin door I found not only my footprints from earlier in the morning, but a new set of elk prints. So that noise of some sort of commotion outside wasn't entirely a dream.

The day started out looking like a continuation of yesterday, but as it progressed, it got nicer. The wind died down and the clouds disappeared, even though it was still cold. (The light snow which was in shadows took hours to disappear. It wasn't until after Grand's afternoon eruption that the clouds came back in. But by that time, there wasn't much reason to be out.

I made a sweep down basin, visiting all the features which weren't going to merit a visit in yesterday's conditions. Got suckered into some early interval chaos at Fan & Mortar: Lots of Bottom Mortar activity accompanied by Lower Mortar splashes and Upper Mortar rumbles, and big splashes from Fan's Main Vent. All during that time, Fan would start steaming like it was having River Vent pauses. Then suddenly it all shifted to Gold erupting and everything else quiet. If I hadn't known that it was less than a day and a half since the last eruption, I would have been disappointed. As it is, I still wonder what it is that makes that same sort of behavior seem so important to an eruption when it occurs later in the interval.

Otherwise saw a nice steamy Castle and your typical Daisy eruption. The Grand eruption surprised us with a second burst, since the first was over 10 minutes long. The lead-up Turbans were all the same, bland and average, so it was an uneventful wait in relatively nice weather.

I found out that the responsible party for the lack of bike racks is not the NPS, but for once we can blame Xanterra I've already voiced my disappointments to my contact within that organization.

Over on Geyser Hill, located below Lion, is a fresh elk carcass. There've also been bear sightings, so the prudent step was taken to close Geyser Hill last night. Today it was still closed, but the closure wasn't being enforced. By the time I was heading out to Grand, it seemed like there was a small but steady stream of people visible over there. When Beehive's Indicator was announced while waiting at Grand, and number of geyser groupies were seriously considering running over there for the eruption. Word was getting around that the closure wasn't being enforced.

Which is all fine and good, but I also am fairly certain that they'd have screamed for sympathy if they'd been caught. It seems every few years gazers and other such hangers on need to be taught the lesson about the application of the rules, and we must not have had a volunteer for the case-study recently.

As for the NPS, what's the point of having a restriction if you aren't going to enforce it (seems like the Feds so that a lot, doesn't it?). If they can't or won't enforce their restrictions when they are so publicly flouted, then they need to use a different policy. How about posting signs like the current ones, warning of the bear activity, and basically telling people, "beyond here, you're on your own." That might actually keep more people out.

Yeah, I know, the first such incident and the idiot (or idiot's estate) sues, and wins. But I also don't like the idea that those of us who follow the rules are punished (by not seeing Beehive up close), while those who break them get rewarded. (Again, seems like a common policy with the Feds.)

(And as I post this, it's starting to snow again…)

I haven't come into the park through the South Entrance in 20 years. For that matter, I haven't come in any entrance but the West during that time. So today was almost a new experience.

But getting there was lots of fun. It started snowing in Dubois, and there was several inches accumulated by the time I reached Togwotee Pass. Sometimes the wind would shake so much snow off of the trees that I couldn't see anything ahead of me. Fortunately, the road itself was bare, with only occasional patches of slush.

The snow showers continued all the way to Old Faithful, but it really didn't slow the traffic down.

There, once I'd checked into my cabin, I discovered that Grand was due in the next few hours. I got lucky in that once I put on the long underwear, the weather going out was nice. That quickly changed, and I was glad I and did the clothing change. Grand decided that it was a good time for a delay, So I got to also see the starts of West Triplet and Rift.

So after four more Turban eruptions in which it was obvious even through the steam and snow that Grand wasn't going to erupt, finally got a good vigorous Turban. One that went on for 2m14s before Grand finally joined in for a short one burst eruption. At that point, was time to head in and warm up.

Once again, the NPS has come up with a new way to be annoying. The bike racks at Castle are gone. I don't know about the ones down basin, as didn't get that far. Checking that out is on tomorrow's agenda.

I heard the call for Beehive's indicator, but decided that since the actual start hadn't been seen, I had no idea how much time there was to get out of bed, get dressed and get over to Geyser Hill. Actually, I just rationalized it that way because I'd forgotten to have things ready just in case, and was too lazy to get moving. As it was, I might have made it, as Beehive was 8 minutes later.

Getting up for Grand was a bit disappointing. The moon was obscured by a band of clouds. Not what I'd wanted, but as it turned out, by the time I got out to Castle, the clouds were mostly gone, and the few remaining were not going to cause a problem. The rest of the night was clear. It was a quiet night. In front of the Inn, on my bike, I also could hear the bursting from Giantess.

The wait for Grand was one of those where everything else has to erupt first. Not only was Grotto in a marathon, but I also got to see Castle, Daisy, Oblong and Riverside first. Once again, Turban avoided the chaotic activity and fell into a nice pattern where I could predict what should happen next. The eruption of Grand was two burst, both nicely illuminated by a low moon (a penumbral eclipse was in progress, but I couldn't tell the difference).

Wanting to get some sleep, and not expecting anything much to happen, I left the radio off. So the first thing I hear when I turn it back on in the morning was a report that at Fan & Mortar the Bottom vent was erupting and still in a long pause. Figures. Three and a third days is also long enough that it could erupt. So instead of a leisurely start to the day, I ended up zipping down there just in case. Looked good, but what do I know, for quite a while until suddenly the water levels in Fan dropped and Mortar's frying pans started steaming.

Giantess was still active over 30 hours after the start, with some nice Big Sawmill type spikes throughout the morning and afternoon. Geyser Hill just didn't look right with all that activity going on. Giantess also doesn't appear to have had an effect on Beehive. Again this morning there was an interval in the 12 hour range.

The morning's non-geyser entertainment was when someone in a car decided that they wanted to drive up to Old Faithful. I saw them negotiating the little connector between the Inn parking lot and the trail, then make a right to go up the hill. I heard they figured out that they were not on a road, but didn't leave it until they got out to take some pictures of Faithful.

Grand could've had a short interval, but instead decided to try all sorts of tricks. Not only did we have Rift, but a couple of of times Vent came up to overflow on a less than ideal pool. This caused the interval to almost put Grand in conflict with the next Fan & Mortar event. But fortunately, Grand couldn't wait any longer, and I was able to leave the two burst eruption at a civilized pace and still get down to see another failed attempt at an eruption by Fan & Mortar. Like this morning, the water levels never wanted to progress beyond, "looking okay".

While waiting for Grand, a pair of coyotes did make an appearance from the north, then moving up the hill. I'd guess this is the same pair I saw back in May, and are probably the reason this whole trip I haven't seen any marmots on the hill behind Grand.

The next Grand eruption was going to take place after sunset. As with last night, there were quite a few clouds to the south, but like last night, whatever storm that was went right by, and within an hour the sky was clear. But heading out meant bugs. There must've been a fly hatching as there were more than just mosquitoes in the mix, and they were so thick that I had to breath through my nose or ingest more than few as I biked down from the Inn.

The first view of the moon I had was through the steam of a West Triplet eruption, with it casting shadows of the trees by the trail onto that steam cloud. Viewed from my usual spot while waiting for Grand, there was an almost 3-dimensional appearance as the steam caused various parts of the shadows to disappear and reappear. The Grand eruption itself was nicely illuminated, but one burst eruptions are always a bit disappointing.

Beehive made up for that. After the eruption, just as I was going to leave Grand it was announced that the Indicator was erupting. I decided that I didn't want to walk to Geyser Hill and back, but could easily ride the bike to the overlook. I arrived there just moments before the eruption started. I believe that this may have been the first time I'd seen a moonbow in Beehive's spray, which was to the northwest over the river. (And at the start we had the usual idiot with a light, out for the full moon, who thinks he can do a better illumination job than the moon is doing.)

The plan was to take a few hours nap, then head out to Grand just as the last bit of twilight disappeared. Just not much twilight as there were still quite a few clouds. But unlike the previous nibht, these were scattered and there wasn't any layer scattering the moon when it was in the clear.

A check of the weather radar sites shows a nice storm in Idaho between Idaho Falls and Pocatello heading in a direction that should take it just south of her. So as the night progressed, so did the cloudiness to the south, along with occasional flashes of lightning. But moon did make it between the clouds for the crew who got to see the middle of the night Beehive eruption, and by then it appeared we were going to miss that storm.

But for some reason, just as Grand started, the wind shifted putting my position directly in the line of precipitation. A fairly unusual occurance, as only rarely do I have to make a run for it at the start of the eruption. Like several other eruptions, this one had well over a minute and a half from Turban's start to Grand's. Then Grand wasted the opportunity by denying us a second burst by low moonlight.

I decided getting to Grand by the 7-1/2 hour point would be okay, and so was just turning into the Inn parking lot on my way to the Lower Ham's lot when I heard someone announce the current time and "Great Fountain". Which didn't make any sense, since there's no way to report s Great Fountain start time from there. Then the report was amended to "Giantess" or something that sounded like that. I glanced over toward the Inn and the new Cathedral and saw a large steam cloud rising, so I knew that it must really be Giantess.

I considered turning around and following Scott Bryan, who I passed on the utility road, but decided that going to Geyser Hill via Castle and Sawmill worked just as well. As it was, I could still hear the boiling from the initial bursting as I walked through the trees towards Lion. That bursting stopped around the time I broke into the open. The main burst started almost precisely at the half hour mark. The water jetting wasn't all that impressive, and after only a couple of minutes quickly turned to steam.

That part of the eruption was pretty impressive. The roaring was louder than anything Castle can produce, and a naturalist on patrol reported hearing it over by Grand. Standing on the boardwalk near the Vault sign, I could feel the rumbling in my feet. Turns out the walkway was acting as a sounding board, because standing on the gravel didn't have the same feel. At one point, when there was a miniature rainstorm landing on the walkway down by Pump, I got out my umbrella and went looking for a 360 degree rainbow. Which was easy to find, but there wasn't a sign of a second rainbow.

The weather conditions slowly worstened, and by the end Beehive (a long indicator but almost the interval one would have expected without Giantess), Giantess was starting to have pauses and was transitioning back into water. So it looked like the rest of this eruption was going to be in Big Sawmill Mode.

After all the excitement earlier in the day, a one burst Grand in windy conditions was just ordinary.

After all the long Grand intervals, I decided that there wasn't much point in going out in the morning at the seven hour mark. I could use the extra hour sleep. As it turned out, the interval was a minute under eight hours, and I arrived no more than a couple of minutes before the start of the eruption. Another two burst eruption, but this time the first burst lasted 10m15s, making it a minute longer than all of last night's eruption.

I finally got around to seeing what conditions are like around the new Visitor's Cathedral, and discovered that they had provided a bike trail bypass around the new junction. That's all I really wanted when I was here last time, I can slow down for the gravel detour. But what I don't understand is, why did they up pull up the old concrete walkway only to replace it with an identical one? Are they planning to do more concrete replacement?

Waiting for the morning Beehive eruption, for the first time in years I saw an eruption of Depression up close. A combination of little time spent on Geyser Hill and Depression's long intervals were the reason. Still need to do the same for Aurum. Beehive itself waited until the mid-day clouds had a chance to form and block the sun for most of the eruption.

Castle started a minor just as I was about to head out to Grand in the morning. The sound gave me a brief start. A few hours later, it had another minor, this one over 10 minutes long.

The midday Grand was another case of waiting for Rift to end, then waiting a few hours of chaotic Turban activity before finally getting a one burst eruption. Time to revert back to normal and get used to a bunch of one bursts.

So it turns out that the assumption that Fan & Mortar was safe to ignore for the night because of the event it had at sunset was not true. It ended up erupting in the early morning hours with no one around. I might even have heard the start. Like I said in an earlier post, by the time I went it, it was calm and quiet and easy to hear Old Faithful from the Sawmill Group. A little bit farther on, as I was trudging up the hill to Crested, I remember stopping and looking back for quite a bit of time. Some noise down basin caught my attention, but I couldn't place it. There was just general steam down there, but nothing that looked like an eruption of Giant. So I went on in.

I made the right decision to eat breakfast in the Lower Ham's store right when the opened at 07:30. Because Grand decided for no good reason to have an 11.5 hour interval. Instead of a steaming, backlit eruption, we got a warm midday one. None of the patterns I've seen recently seemed to work or matter. An eruption of West Triplet came and went. There were several short Turban durations in a row. At least once we saw water boil up in Vent. Nothing seemed to matter. The eruption itself was a nondescript one burst that didn't even give the appearance of trying for two.

So at that point, there wasn't much to do until evening, at least in terms of large geyser activity. Mike Keller pointed out that Great Fountain would be erupting during the afternoon, so this actually looked like a good time to risk a trip to the Lower Basin. The afternoon itself was a series of thundershowers, but Great Fountain managed to wait until things were generally dry before erupting. Nothing spectacular, and a bit steamy, but there were some nice bursts during the first and third burst periods.

The rains continued off an on, but by the time it was time to head out to Grand, the rains had quit and the clouds seemed to be promising to disappear. Thanks to the cloudiness and rains, it was a bit chillier than would normally be expected in July. But not cold enough to discourage the mosquitoes. Shortly before sunset I noticed that the moon had risen, and was increasing the distance between itself and the clouds as it rose. An announcement of Beehive's Indicator then cleaned out all the geyser gazers. The Beehive eruption itself was easily heard at Grand.

An hour after sunset, about 22:05 or so I notice what sounds like thunder off in the distance to the northwest. By this time the clouds have mostly cleared away, and there's nothing that looks like it could produce lightning in any direction. I hear it several times. It sounds like it could be a thermal feature, but there's not been any changes in the steam clouds. Then it occurs to me-- I'd heard that West Yellowstone was going to have fireworks tonight, starting at 22:00. So what I was hearing was the sound of those fireworks, about 20 to 25 miles away with all sorts of terrain in the middle.

On the next Turban, it had finally been long enough that Grand couldn't hold off any more. It was too dark, despite a near full moon, to seem much more than the steam, but Turban gave the typical explosive start that signals that Grand is having waves. This time, that Turban activity seemed to die down, and by a minute and a half, despite all the steam coming from Grand's pool, it sure did seem like there wasn't going to be an eruption. As it was, it was 1m40s before Grand started. All that Turban activity must've had an effect, as the total duration of the two bursts was only 9m10s. I wouldn't be surprised that if we could have seen the pool of Grand, we'd have seen water sloshing around for about a minute or so before draining.

Usually leave the radio on on the off chance that I might hear something interesting. Last night, decided that I didn't care what F&M were doing, and whatever happened after the start of a River pause, I would learn about it in the morning. So I shut the radio off and added and hour to the alarm.

That meant that instead of going out in time for Grand and Beehive's early morning eruptions, I got out just in time to miss them. Leading to another day with a huge gap before time to head out. But with the intermittent showers of the late morning, having no reason to be out and about wasn't so bad. Did get down to check out Daisy and the wash zone from the recent Link eruption, and to watch an hour of Bijou pauses. (Easier to recognize unusual behavior when you have some idea of the look of the current normal behavior.)

The Grand eruption in the afternoon was a bit of a disappointment. Other than the first few intervals being shorter than the previous one, the Turban activity leading to the eruption showed no clear patterns giving any indication of when the eruption would occur. Worse, an eruption of West Triplet came and went without either Rift or Grand. Usually a bad sign, but at least Grand did decide after a couple of Turbans to erupt. Like yesterday, we had two bursts, but unlike yesterday, they were short and the total duration barely totaled 10 minutes. One bit of amusement was that because of the storms and general bad weather, the wind was coming from an unusual direction, and all the folks gathered on the benches by West Triplet found out the hard way that Grand can get you wet. A few people didn't learn that lesson and were there for the second burst, which gave a repeat performance.

Beehive turned out to be quite cooperative in the afternoon. The weather didn't improve after Grand, and on the whole, got worse. The only good news was the wind direction, it was blowing away from Geyser Hill, so no need to worry about getting drenched by Beehive. Only getting drenched by the weather. I took a look at some weather radar sites via my iPhone, and saw there was a nice, strong cell headed our way. So as I was deciding if it was time to leave, water appeared in the Indicator. That made the decision easy, as since I was going to head in immediately after, I could risk getting doused. As it was, the rain held off just long enough to give us a nice eruption, one that drenched the people gathered across the river instead of us.

Before the evening Beehive eruption, Plume had a couple of eruptions that varied from the norm. The first, which I didn't see, was a six burst eruption. I was told that the last two bursts were the smaller, minor variety where the height only reaches about 10 feet. The next eruption was a typical five burst. The next one I saw, right after the end of Beehive's eruption, had an unusual fifth burst. It started out looking like a minor burst, staying around 10 feet for a good 10 seconds or so before lifting to a more typical height. The burst also seemed to last much longer than I'm used to seeing.

The rainstorm was pretty heavy for an hour, finally ending before sunset with a nice full arc double rainbow from my cabin door (with a Pipeline Meadows bison below it.) It was then that Fan & Mortar decided to have their first event since the activity of the night before. With the rain nearly over, and at least another hour of light, I decided that I had no excuse not to bike down there. To get there just in time to see a weak restart of the Fan vents. At least didn't have to spend much time down there.

At that point it was only about an hour before it would be time to go out to Grand, and with the clearing skies, decided that I would go out for the nighttime eruption. The moon was shining through a high thin layer, so there was plenty of light, but the sky was gray instead of black and full of stars. I arrived to find Rift in eruption, but with the overcast, it wasn't all that cold either. A couple of hours waiting for a two burst eruption wasn't so bad, especially when the second burst lasted over two minutes.

One thing I like about nighttime are the sounds you don't hear during the day. As I was leaving Grand, walking toward Sawmill, I could hear, but not see, an eruption of Old Faithful. This particular night I also got to hear a new sound. Having seen/heard so many nighttime eruptions, all the various sounds are familiar, and even expected: the gurgling of Turban after the post-eruption quit. The spitting of Percolator, and rumbles from West Triplet. As I was getting ready to leave, standing by West Triplet, I suddenly became aware of a new sound, a liquid splashing I'd never noticed before. Quickly realized it was an eruption of Sputnik. I'd seen it during the earlier eruption waits, but never heard it before.