Category: 2024

The radio call for Beehive's Indicator came through just before the alarm for getting up to go out to Grand went off. So went over first to Beehive, then got out to Grand about an hour after my original plan. I didn't miss much, it appears. After about 1-1/2 hour wait, got a One Burst Eruption when it had warmed up a bit so it wasn't quite so steamy.

2024-Aug-21:09:12:37 G1C

 09:12:37	B1	--- d=09m54s
 09:12:58	Turban	0m21s
 09:15:36	Vent	2m59s
 09:22:31	P1	9m54s
Vent & Turban continue

				     	ΣD=09m54s
	* * * * *
 07:44:12			d=03m53s 	
 08:02:39	Int: 18m27s	d=03m45s 	
 08:20:47	Int: 18m08s	d=03m56s 	
 08:38:41	Int: 17m54s	d=03m23s 	
 08:55:43	Int: 17m02s	d=03m41s 	
		      Grand: 16m54s

Spent a couple of hours at Fan & Mortar. At times the High Vent could look interesting, strong and tall, but on the whole, I didn't see much in the way of any cycles. The vents would come on for a few minutes, then everything was quiet. The only good news was that Angle would shutdown along with the others.

After that, headed over to Daisy where a 102 minute interval resulted in a 3m25s long eruption.

The wait for Grand during the afternoon was similar to that of the morning. There was just a string of undistinguished Turban eruptions before the One Burst Grand eruption. The only notable difference was that the Turban eruption intervals were longer.

2024-Aug-21:17:20:46 T1Q

 17:20:07	Turban	-0m39s
 17:20:10	Vent Ovfl	-0m36s
 17:20:40	Boop	-0m06s
 17:20:46	B1	--- d=10m15s
 17:23:05	Vent	2m18s
 17:31:02	P1	10m15s
 17:31:56	V&T Quit	11m10s

				     	ΣD=10m15s
	* * * * *
 15:19:38			d=04m19s 	
 15:39:12	Int: 19m34s	d=04m02s 	
 16:00:59	Int: 21m47s	d=04m15s 	
 16:21:40	Int: 20m41s	d=04m04s 	
 16:40:09	Int: 18m29s	d=03m11s 
 16:58:38	Int: 18m29s	d=03m37s 
		     Turban: 21m28s

Arrived for the moonlight Grand and waited a total of five minutes for a nice two burst eruption. There was a slight breeze blowing the steam to the north, so couldn't see Turban or Vent start, but it also made the activity easily visible, especially the second burst. And that concluded a four Grand eruption day.

2024-Aug-21:23:45:21 G2C

 23:45:21	B1	--- d=09m03s
 23:54:25	P1	9m03s d=43s
 23:55:08	B2	9m46s d=44s
 23:55:52	P2	10m31s
Vent & Turban continue

				     ΣB=09m47s	ΣD=10m31s

There wasn't a Turban Delay interval, but Grand still took nearly 2-1/2 hours after my arrival before sunrise to finally have the One Burst Eruption. For six Turban intervals, both the durations and the intervals got short so that the Grand eruption was less than 16 minutes after a Turban eruption lasting less than 3-1/2 minutes. Were fortunate to have Grand erupt when it did, as a thunderstorm moved in as we were leaving, with a downpour about twenty minutes later.

2024-Aug-20:08:40:19 T1C

 08:40:02	Turban	-0m16s
 08:40:19	B1	--- d=10m53s
 08:43:09	Vent	2m50s
 08:51:12	P1	10m53s
Vent & Turban continue

				     	ΣD=10m53s
	* * * * *
 06:22:31			d=01m39s 	
 06:35:46	Int: 13m15s	d=04m39s 	
 06:53:52	Int: 18m06s	d=04m07s 	
 07:11:57	Int: 18m05s	d=03m59s 	
 07:30:57	Int: 19m00s	d=03m38s 	
 07:49:18	Int: 18m21s	d=03m33s 	
 08:07:07	Int: 17m49s	d=03m29s 	
 08:24:23	Int: 17m16s	d=03m27s 	
		     Turban: 15m38s

Ended up waiting less than two Turban eruption intervals before the next Grand eruption. The interval on which Grand eruption was almost a Turban Delay interval, but came about 25seconds short. It took Turban almost a minute to start its eruption. The first burst lasted 9m18s, and the pause between the bursts was short, at 21s. It also had a sort of two meter high boop before starting. It was a windy day, and my camera tripod tried to take flight on a couple of occasions.

2024-Aug-20:15:24:52 G2Q

 15:24:45	Boop	-0m07s
 15:24:52	B1	--- d=09m18s
 15:25:48	Turban	0m56s
 15:27:41	Vent Ovfl	2m49s
 15:28:36	Vent	3m44s
 15:34:10	P1	9m18s d=21s
 15:34:31	B2	9m39s d=44s
 15:35:15	P2	10m23s
 15:36:01	V&T Quit	11m09s

				     ΣB=10m02s	ΣD=10m23s
	* * * * *
 15:00:17			d=04m03s 	
		      Grand: 24m35s

Decided to kill some time at Riverside, but after about 15 minutes, got a radio call about Beehive's Indicator in eruption. As it had been less than twelve hours since the pre-sunrise eruption, decided to abandon Riverside and head to the Firehole River overlook. The Indicator lasted at least 27 minutes, and looked like we might be getting a False Indicator. Until the last five minutes or so, there was only some weak splashing from Beehive.

Grand could've taken the opportunity to erupt instead of having a Turban Delay interval. The moon had just risen above the trees, and it would have been nicely backlit. Instead it was six Turban intervals later, and after midnight, when Grand behaved like it was going to erupt. It wasn't a Turban Delay interval, as the interval was less than 22 minutes. For the next Turban eruption there was no overflow, as if it had been a Delay interval.

Grand finally had the One Burst Eruption on the eighth interval, lasting under 9-1/2 minutes. Uncertain was gurgling steadily as we left, but after being out that long, decided it didn't need me around in order to erupt.

2024-Aug-21:00:40:08 D8/G1C

 00:40:08	B1	--- d=09m23s
 00:49:32	P1	9m23s
Vent & Turban continue

				     	ΣD=09m23s
	* * * * *
 21:33:35			d=04m47s 	
 21:50:56	Int: 17m21s	d=04m16s 	
 22:16:33	Int: 25m37s	d=04m21s  D0	
 22:32:58	Int: 16m25s	d=04m24s  D1	
 22:51:56	Int: 18m58s	d=03m57s  D2	
 23:10:37	Int: 18m41s	d=03m50s  D3	
 23:28:12	Int: 17m35s	d=03m24s  D4	
 23:44:23	Int: 16m11s	d=03m35s  D5	
 00:06:09	Int: 21m46s	d=04m21s  D6	
 00:24:19	Int: 18m10s	d=03m39s  D7
		      Grand: 15m49s

With it pouring rain at midnight, didn't bother to head out, although it appears the conditions improved enough that the overnight Grand eruptions was seen on the webcam

So got out well after sunrise for the morning Grand eruption. No sign of a delay, so the interval to the One Burst Grand eruption was only about seven hours.

2024-Aug-19:09:19:49 G1C

 09:19:49	B1	--- d=08m46s
 09:20:40	Turban	0m50s
 09:23:04	Vent	3m14s
 09:28:36	P1	8m46s
Vent & Turban continue

				     	ΣD=08m46s
	* * * * *
 08:15:42			d=04m19s 
 08:35:50	Int: 20m07s	d=04m11s 
 08:55:17	Int: 19m26s	d=04m41s 	
		      Grand: 24m32s

Decided that this might be a good day to try for a Beehive video. Turned out to be correct, as there was almost no one waiting for the eruption. All the little sputs around the cone were quiet. After about an hour of waiting, I thought that I was hearing some bubbling or a frying pan, but could see the source of the noise. About five minutes later the Indicator started erupting. The video turned out nicely, although my framing was a bit off with the Indicator.

In the afternoon walked up onto a Turban Delay interval. Unlike previous days, only had to wait for two Turban eruption intervals before the One Burst Grand eruption.

2024-Aug-19:16:19:15 D2/G1Q

 16:19:07	Boop	-0m07s
 16:19:15	B1	--- d=10m56s
 16:20:10	Turban	0m54s
 16:23:37	Vent	4m22s
 16:30:12	P1	10m56s
 16:31:28	V&T Quit	12m13s

				     	ΣD=10m56s
	* * * * *
 15:39:37			d=05m27s  D0	
 15:58:27	Int: 18m50s	d=04m10s  D1	
		      Grand: 20m48s

Went out for the sunset Castle eruption. Starting about 2-1/2 minutes into the eruption, Castle began to have significant pauses every 40-45 seconds or so. This continued until the ten minute mark, when a restart did not occur. For the next 2-1/2 minutes Castle was mostly quiet, with only occasional weak splashes. Then one of those splashes built up and the eruption resumed. It seemed like the transition to steam was delayed also.

Finally went out for the moonlit midnight Grand. There wasn't any Turban Delay, and the 7-1/2 hour interval put the One Burst Grand eruption start just before midnight.

2024-Aug-19:23:51:43 T1C

23:50:31	Turban	-1m12s
23:51:43	B1	--- d=09m42s
00:01:26	P1	9m42s
Vent & Turban continue

				     	ΣD=09m42s
	* * * * *
22:38:00			d=04m24s 
22:57:16	Int: 19m16s	d=04m09s 
23:15:55	Int: 18m38s	d=03m34s 
23:32:36	Int: 16m41s	d=03m54s 
		     Turban: 17m54s

Got a wakeup call for Beehive at 04:20 that the Indicator was in eruption. Just made it over in time for the start of Beehive's eruption.

I had planned on going out to Grand about an hour later, so instead of trying to get a little sleep, went on out in the dark. I'm pretty sure I arrived in the middle of a Turban Delay interval, based on the long, heavy overflow and that the next Turban eruption interval had no overflow audible from Grand. So it was a cold wait through six Turban intervals before the One Burst Grand eruption.

2024-Aug-18:07:25:09 G1Q

 07:25:09	B1	--- d=11m17s
 07:26:00	Turban	0m51s
 07:28:25	Vent	3m16s
 07:36:26	P1	11m17s
 07:37:21	V&T Quit	12m12s

				     	ΣD=11m17s
	* * * * *
 05:34:49			d=05m38s 	
 05:53:15	Int: 18m26s	d=03m49s 	
 06:11:26	Int: 18m11s	d=04m10s 	
 06:30:48	Int: 19m22s	d=03m43s 	
 06:48:35	Int: 17m47s	d=03m23s 	
 07:05:51	Int: 17m16s	d=03m56s 	
		      Grand: 19m18s

The afternoon gave us a Turban Delay interval followed by a seven Turban interval delay before the One Burst Grand eruption.

2024-Aug-18:16:24:00 D7/T1C

 16:23:21	Vent Ovfl	-0m39s
 16:23:24	Turban	-0m36s
 16:23:55	Boop	-0m05s
 16:24:00	B1	--- d=09m22s
 16:26:36	Vent	2m36s
 16:33:22	P1	9m22s
Vent & Turban continue

				     	ΣD=09m22s
	* * * * *
 13:51:19			d=04m20s 	
 14:16:23	Int: 25m04s	d=03m38s  D0	
 14:31:50	Int: 15m27s	d=04m18s  D1	
 14:50:36	Int: 18m46s	d=04m17s  D2	
 15:09:39	Int: 19m03s	d=03m42s  D3	
 15:27:16	Int: 17m37s	d=04m04s  D4	
 15:45:32	Int: 18m16s	d=03m21s  D5	
 16:02:20	Int: 16m48s	d=03m45s  D6	
		     Turban: 21m04s

With no report on activity in the Grand or Sawmill groups, and Grand's interval around nine hours, I went out at sunrise to see what was going on. I found that Rift's marker was gone, and all of the features there quiet. But I only had to wait one Turban eruption interval before Grand erupted. Unlike yesterday, at least the One Burst Eruption lasted about 10-1/2 minutes.

2024-Aug-17:07:18:12 T1Q

 07:17:57	Turban	-0m15s
 07:18:12	B1	--- d=10m29s
 07:20:45	Vent	2m33s
 07:28:41	P1	10m29s
 07:29:33	V&T Quit	11m21s
 07:37:29	V&T Restart	19m17s

				     	ΣD=10m29s
	* * * * *
 07:01:30			d=02m59s 	
		     Turban: 16m27s

Afterwards, I noticed that the water levels in the Sawmill Group were high. Belgian Pool was full to the rim, while Crystal was overflowing slightly and drowning Slurp. Sawmill was high and quiet, while Spasmodic was quiet and starting to overflow. Tardy was full and overflowing, and booped once while I was taking a video of the group.

The overflow from Spasmodic ended within ten minutes, and all the water levels dropped by then.

By early afternoon Belgian had dropped about 5cm so that the side lobe was empty. At Grand there were several undistinguished Turban eruptions followed by a Turban Delay interval of over 33 minutes. The next few intervals were all around 17 to 17-1/2 minutes long.

It was six Turban eruption intervals later where Grand finally looked like there would be an attempt at erupting. Vent started to overflow a few second before Turban began a vigorous eruption. This eruption lasted for over 2-1/2 minutes before Grand finally started, with Vent in overflow and Grand was pulsating the whole time. Because of the long delay in Grand starting, Vent started just over a minute after Grand.

The first burst lasted just under eight minutes. There was never much doubt that there would be a second burst, which ended up lasting a minute. Vent & Turban quit less that a minute later. Vent & Turban quickly restarted about nine minutes later.

2024-Aug-17:16:07:54 D6/T2Q

 16:05:13	Vent Ovfl	-2m41s
 16:05:17	Turban	-2m37s
 16:07:52	Boop	-0m02s
 16:07:54	B1	--- d=07m51s
 16:09:00	Vent	1m06s
 16:15:45	P1	7m51s d=42s
 16:16:27	B2	8m33s d=01m00s
 16:17:27	P2	9m33s
 16:18:16	V&T Quit	10m22s
 16:27:27	V&T Restart	19m33s

				     ΣB=08m51s	ΣD=09m33s
	* * * * *
 13:14:42			d=05m04s 	
 13:32:25	Int: 17m43s	d=04m19s 	
 13:50:38	Int: 18m13s	d=04m22s 	
 14:23:55	Int: 33m17s	d=04m16s  D0	
 14:39:54	Int: 15m59s	d=03m46s  D1	
 14:57:20	Int: 17m26s	d=03m53s  D2	
 15:14:32	Int: 17m12s	d=04m07s  D3	
 15:31:32	Int: 17m00s	d=03m50s  D4	
 15:48:47	Int: 17m15s	d=03m34s  D5	
		     Turban: 16m30s

For the third day in a row, Uncertain was looking interesting after Grand. Didn't have a long wait before we got to see it erupt.

The moon was high in the sky, and an orange-red due to a layer of smoke. It slowly improved during the wait for the next Grand eruption, but even an hour later there was a yellowish cast and it didn't seem bright enough for moonbows.

Arrived at Grand in time for the Turban Delay eruption, but fortunately, the wait was only for two more Turban intervals. Grand tried to have a second delay, but finally started the One Burst Eruption 24 minutes after the previous Turban eruption. As expected, we didn't see any sign of moonbows, although the moon was bright enough to see details of Grand's water spikes.

2024-Aug-17:23:09:56 G1C

 23:09:56	B1	--- d=10m09s
 23:10:48	Turban	0m52s
 23:13:21	Vent	3m24s
 23:20:06	P1	10m09s
Vent & Turban continue

				     	ΣD=10m09s
	* * * * *
 22:27:26			
 22:27:26	d=05m29s 	
 22:45:57	Int: 18m31s	d=04m34s 
		      Grand: 23m59s

During the Grand eruption, West Triplet was near overflow, and at one point, put out a trickle of water

Another foggy morning where I wasn't able to tell that Grand had not yet erupted until I got over by Rift. Only had to wait one Turban eruption interval before the One Burst Eruption started. It lasted under nine minutes.

2024-Aug-16:06:45:13 T1C

 06:44:58	Turban	-0m15s
 06:45:13	B1	--- d=08m52s
 06:48:02	Vent	2m48s
 06:54:06	P1	8m52s
Vent & Turban continue

				     	ΣD=08m52s
	* * * * *
 06:27:14			d=03m50s 	
		     Turban: 17m44s

In the afternoon, went out for the Grand eruption wait, and arrived in what was probably a Turban delay interval, based on having twenty minutes between my arrival and when Turban finally erupted. Grand erupted after a four Turban interval delay, and the One Burst Eruption only lasted 8m37s.

2024-Aug-16:14:07:34 G1C

 14:07:34	B1	--- d=08m38s
 14:08:29	Turban	0m55s
 14:08:58	Vent Ovfl	1m24s
 14:11:03	Vent	3m29s
 14:16:12	P1	8m38s
Vent & Turban continue

				     	ΣD=08m38s
	* * * * *
 12:52:18			d=05m35s 	
 13:10:28	Int: 18m10s	d=04m00s 	
 13:29:54	Int: 19m26s	d=03m48s 	
 13:47:45	Int: 17m51s	d=03m41s 	
		      Grand: 19m49s

Shortly after the end, did get to see another eruption of Uncertain, while a couple of hours later heard the radio call for Beehive. It was a bit windy, and of course the wind shifted just enough to insure the entire walkway railing got wet during the eruption.

Went out to Grand at sunset with the hope that it would take its time and not erupt until dark and by moonlight. Which it did. Unfortunately, during the Turban eruption interval preceeding the Grand eruption, clouds moved in and covered the moon. The clouds did part around the eight minute mark, so we did get some of the eruption by moonlight.

The first burst lasted exactly ten minutes, so it was a bit of a surprise when after a 48s pause, we got a second burst.

2024-Aug-16:21:34:45 2Q

 21:34:45	B1	--- d=10m00s
 21:44:45	P1	10m00s d=48s
 21:45:33	B2	10m48s d=40s
 21:46:13	P2	11m28s
 21:47:03	V&T Quit	12m18s

				     ΣB=10m40s	ΣD=11m28s
	* * * * *
 20:02:00			d=03m51s 	
 20:21:20	Int: 19m20s	d=04m17s 	
 20:40:18	Int: 18m58s	d=03m46s 	
 20:58:57	Int: 18m39s	d=04m18s 	
 21:17:01	Int: 18m04s	d=03m43s 	
		     Turban: 17m44s

On the walk back toward Castle, raindrops started to fall from a distant cloud, as the moon was still visible.

At sunrise in the cabin area the fog was so thick that it was hard to see the farthest cabins, and walking to the indoor plumbing was through a mist.

Only had to wait one Turban eruption interval for the first One Burst Grand eruption of this visit. While it was still foggy, it was possible to see details of the start of the eruption, which started out well enough. But around then ten minute mark, it got entertaining. The eruption devolved into Big Sawmill, and at the eleven minute mark there was a significant false pause. There was another about 30 seconds later, and a third about ten seconds before the eruption finally ended at just over 13 minutes. Much of the last minute or so consisted of large splashes only a couple of meters high. It was also no surprise that Vent & Turban quit within seconds of Grand's end.

2024-Aug-15:08:58:11 G1Q

 08:58:11	B1	--- d=13m03s
 08:58:19	Turban	0m08s
 09:01:03	Vent	2m52s
 09:09:18	FP	11m07s
 09:09:43	FP	11m32s
 09:11:04	FP	12m53s
 09:11:14	P1	13m03s
 09:11:27	V&T Quit	13m16s

				     	ΣD=13m03s
	* * * * *
 08:41:19			d=02m35s 	
		      Grand: 16m52s

Spent the rest of the morning out in the basin since we needed to wait for our proper cabin to be made available. So after breakfast, went on down to see an eruption of Daisy. The interval was only 100 minutes, which is much less than the close to two hour intervals of previous years.
The duration was 3m11s, which seemed too short.

After than it was time to see the next Castle eruption following the eruption I saw last night. Didn't have to wait long for the 2m45s long minor eruption.

After finally getting moved into our cabin, went back out to Grand. This time we had to wait two Turban eruption intervals for Grand. Shortly before that we got to see an eruption of Oblong, which didn't seem to be as tall as I've seen previous years.

The Grand eruption took place in a break in the gathering afternoon thunderstorm clouds. The first burst lasted 9m15s, but the crater never really drained, so a second burst was expected. After the eruption, I noticed that West Triplet was in heavy overflow. No attempt at an eruption, and in a few minutes the overflow had ceased.

2024-Aug-15:15:38:17 G2Q

 15:38:15	Boop	-0m02s
 15:38:17	B1	--- d=09m16s
 15:38:51	Vent Ovfl	0m33s
 15:38:59	Turban	0m42s
 15:41:47	Vent	3m29s
 15:47:34	P1	9m16s d=55s
 15:48:29	B2	10m12s d=56s
 15:49:26	P2	11m09s
 15:50:09	V&T Quit	11m51s

				     ΣB=10m13s	ΣD=11m09s
	* * * * *
 14:59:00			d=04m08s 	
 15:18:14	Int: 19m14s	d=04m24s 	
		      Grand: 20m03s

I noticed after that that Oval Spring was down and murky, and not sure what that might mean.

Walked over toward Sawmill, where I could hear Uncertain gurgling. Water was visible in Sawmill's vent, and a few minutes later was noticeably higher. But over the next half hour, the water level in Sawmill dropped out of sight, while the gurgling in Uncertain slowly turned into splashed.

Then Castle had another eruption, this time a major eruption. There were a number of distinct pauses followed by tall jets.

Right after the start of Castle Tardy erupted for a couple of minutes. That's when Uncertain's splashing really picked up. A minute after Tardy ended Uncertain's vent filled and overflowed water, and we thought the eruption had started. But it subsided and a few second later a second surge turned into an eruption. Got back into the cabin just as the thunderstorm raindrops started.

Was planning to head out to Grand for a moonlight eruption, but that thunderstorm was the first of several. Getting soaked in the dark held little appeal.

After the rainstorm ended it was cool and damp. There wasn't much going on in the Upper Basin, but having just arrived, I still wanted to see some sort of activity. So went over to Geyser Hill just before sunset to at leastsee Anemone erupt, and catch anything else.

I didn't have any prediction for Castle, but turns out I was able to see the start of a major eruption while I was over by Aurum. It was nicely backlit by the low sun.

I also noticed that the frying pan area near the boardwalk over by Little Squirt had a small area of steaming, made obvious by the dampness.

Waited through two hours of indifferent Turban eruptions. When Rift started thirty minutes after West Triplet, and the next Turban eruption did not result in Grand erupting, it was time to leave.

But it appears that this eruption of Rift had little effect. Grand erupted within an hour of our leaving, and the following interval was well under seven hours.

Expecting Grand to have longer intervals, did visit to the Lower Basin, but Great Fountain was not near overflow when the rain started. Left, only to have that be the only showers for several hours.

The rain didn't restart until it was time for Grand to erupt. After some prelimiary showers, a strong rain started just as Grand was full and having waves. That rain, which included hail at the end, ended with the One Burst Grand eruption.

2024-Jun-09:16:19:41 G1C

 16:19:36	Boop	-0m05s
 16:19:41	B1	--- d=10m18s
 16:20:41	Turban	1m00s
 16:21:19	Vent Ovfl	1m38s
 16:23:28	Vent	3m47s
 16:29:59	P1	10m18s
Vent & Turban continue

				     	ΣD=10m18s
	* * * * *
 14:59:53			d=04m21s 	
 15:21:23	Int: 21m30s	d=04m14s 	
 15:40:57	Int: 19m34s	d=03m49s 	
 15:58:32	Int: 17m35s	d=03m28s 	
		      Grand: 21m09s

Once again, the day started with a middle of the night call for Beehive's Indicator. Made it over there in plenty of time to contribute a light to the eruption.

After yesterday's long waits, Grand ended up having a short interval overnight. It was mid-morning before finally getting out into the basin. Took a look at Economic, which looks no different from two weeks ago. Castle had another major eruption, and the Grand had the first observed two burst eruption in several days. The interval was also short and the eruption started shortly after West Triplet started erupting. The West Triplet eruption was over by the time Grand had quit.

2024-Jun-08:11:11:03 G2C

 11:11:03	B1	--- d=08m49s
 11:11:28	Turban	0m25s
 11:12:57	Vent Ovfl	1m54s
 11:14:11	Vent	3m08s
 11:19:52	P1	8m49s d=20s
 11:20:13	B2	9m10s d=45s
 11:20:58	P2	9m55s
Vent & Turban continue

				     ΣB=09m34s	ΣD=09m55s
	* * * * *
 10:08:12			d=04m25s 	
 10:26:48	Int: 18m36s	d=04m37s 	
 10:46:55	Int: 20m07s	d=04m01s 
		      Grand: 24m07s

It being a nice morning, went on down the basin. Thought about going to Daisy, but got a call about some Main Vent Splashing at Fan & Mortar. So went there and hung around for a while. When the Fan vents started, they were much stronger than the activity I'd seen earlier this week. It was the kind of activity that looked like it could build into an eruption when Fan & Mortar are having frequent eruptions.

From there, stopped by Riverside to wait for the start of an eruption. One problem is that over the years, much of the view of Riverside has been blocked by trees.

Was starting to prepare dinner when got another call for Beehive's Indicator. This was a bit of a surprise, as we had been expected Beehive and Grand to be competing for attention. The sky turned dark as we waited and got a few droplets of rain after Beehive's eruption. So returned from Geyser Hill and picked up the food prep where we'd left off.

Because of the interruption, it was time to head back to Grand after cleanup. Waited one Turban eruption interval, the first time for that in days, for yet another short Grand eruption interval. The One Burst Grand eruptions almost quit around the 8m30s mark, and then spent much of the next two minutes in Big Sawmill Mode.

2024-Jun-08:17:48:20 G1Q

 17:48:20	B1	--- d=11m15s
 17:48:23	Vent Ovfl	0m03s
 17:48:47	Turban	0m26s
 17:51:34	Vent	3m14s
 17:59:35	P1	11m15s
 18:00:15	V&T Quit	11m54s

				     	ΣD=11m15s
	* * * * *
 17:25:58			d=04m02s 	
		      Grand: 22m22s

Since Grand erupted early, and it was well before sunset, went out to see an eruption of Fountain. That eruption lasted nearly 30 minutes, nicely lit by the low sun (except for a few clouds).

The day started with a 1d11h interval for Rift. The Grand Group had barely recovered from the previous eruption when this one started. Six hours later we finally got the One Burst Grand eruption starting explosively after several boops.

At first the Turban eruption intervals and durations got shorter as expected, but the last two eruptions had longer intervals and longer durations than earlier. The Rift eruption lasted about 2-3/4 hours, but it took three more hours before Grand finally had a long, strong fill. The Grand eruption lasted almost eleven minutes, yet Vent & Turban continued to erupt. It appears that the reactivation of Rift is finally having an effect on Grand.

During the wait, I did get to see Uncertain erupt. Others noticed that the vent was full and even overflowing while Sawmill was in eruption, so once one of the Turban eruptions ended, I walked down that way. As I passed Old Tardy, Sawmill ended. The Uncertain eruption took place within a couple of minutes.

2024-Jun-07:14:09:23 T1C

 14:09:04	Vent Ovfl	-0m19s
 14:09:14	Boop	-0m09s
 14:09:22	Turban	-0m01s
 14:09:23	B1	--- d=10m47s
 14:11:19	Vent	1m56s
 14:20:10	P1	10m47s
Vent & Turban continue

				     	ΣD=10m47s
	* * * * *
 08:19:52			
 08:35:52	Int: 16m00s	d=03m38s 	
 08:56:04	Int: 20m12s	d=04m25s 	
 09:14:03	Int: 17m59s	d=04m06s 	
 09:34:15	Int: 20m12s	d=03m56s 	
 09:55:31	Int: 21m16s	d=03m57s 	
 10:13:57	Int: 18m26s	d=03m46s 	
 10:32:09	Int: 18m12s	d=03m10s 	
 10:49:58	Int: 17m49s	d=03m25s 	
 11:09:02	Int: 19m04s	d=03m26s 	
 11:27:05	Int: 18m03s	d=03m40s 	
 11:44:25	Int: 17m20s	
 12:01:23	Int: 16m58s	d=03m05s 	
 12:18:41	Int: 17m18s	d=03m38s 	
 12:36:52	Int: 18m11s	d=03m00s 	
 12:52:43	Int: 15m51s	d=02m59s 	
 13:08:39	Int: 15m56s	d=02m45s 	
 13:28:21	Int: 19m42s	d=03m28s 	
 13:46:28	Int: 18m07s	d=03m54s 	
		     Turban: 22m54s

Was going to wait for Castle after Grand erupted, based on the NPS prediction. But then several people started doing the math, and concluded that it would be several hours before Castle had a chance. That Castle was completely dead the whole time we were considering our options reinforced that conclusion. Castle ended up erupting over three hours later.

Grand is now seems to be in a mode where it is erupting three times a day, with two of the eruptions in the dark.

Went out at sunset for a Grand erupion in the dark. It was still light when we got a Turban Delay interval. Three Turban intervals later Grand had the One Burst Eruption lasting one second under ten minutes.

2024-Jun-07:22:01:23 D3/G1C

 22:01:23	B1	--- d=09m59s
 22:11:22	P1	9m59s
Vent & Turban continue

				     	ΣD=09m59s
	* * * * *
 20:39:22			d=03m56s 	
 21:05:57	Int: 26m35s	d=04m19s  D0	
 21:22:58	Int: 17m01s	d=03m56s  D1	
 21:40:47	Int: 17m49s	d=03m48s  D2	
		      Grand: 20m36s

And why is it that family reunion groups staying in the Old Faithful Lodge Cabins have to be so loud and obnoxious? Do they not realize that not everyone is a part of their little clan?

Just after dawn, Fan & Mortar behaved much like I saw the other day. Went down there just in case. Turns out that Bottom Vent did not erupt, and the activity of the Fan vents was better than what I had seen.

Spent half an hour in the Bijou Cage, just to see how things were. Bijou was strong and never stopped. Right after I left, I saw Grotto Fountain starting to erupt. Grotto had one of the stronger and taller starts I've seen in a while, in part because I was upwind over in the corner of the boardwalk.

By then it was time to go to Grand. Arrived to find West Triplet in eruption. As this was almost too early for Grand to erupt, we ended up having to wait the 2-1/2 hours for the next West Triplet eruption. It appears that right now Grand is being strongly influenced by West Triplet, and it's in the mode where there is a West Triplet Window. If Grand doesn't erupt during or immediately after West Triplet, it doesn't even try to erupt for the next couple of hours.

The eruption itself was another One Burst Grand eruption. While waiting, there was an eruption of Uncertain Geyser. I watched it from the benches, and it appeared to be quite tall.

2024-Jun-06:12:55:06 G1Q

 12:55:03	Boop	-0m03s
 12:55:06	B1	--- d=11m05s
 12:55:08	Vent Ovfl	0m02s
 12:55:33	Turban	0m27s
 12:58:06	Vent	3m00s
 13:06:11	P1	11m05s
 13:06:49	V&T Quit	11m43s

				     	ΣD=11m05s
	* * * * *
 10:30:08			d=05m00s 	
 10:48:16	Int: 18m08s	d=04m13s 	
 11:08:46	Int: 20m30s	d=03m57s 	
 11:28:23	Int: 19m37s	d=03m59s 	
 11:46:09	Int: 17m46s	d=03m56s 	
 12:03:04	Int: 16m55s	d=03m35s 	
 12:20:49	Int: 17m45s	d=03m54s 	
 12:36:54	Int: 16m05s	d=03m21s 	
		      Grand: 18m12s

Beehive erupted in the afternoon, and afterwards, saw a couple of new little sputs I haven't seen before. One is probably "Borah Peak Geyser" while the other is located near the location of Dragon Springs and hasn't been seen before. The latter only erupts to about a meter at a severe angle and lasts for maybe 20 seconds. It looks like something that is erupting from a drained pool.

Grand was set up for a sunset eruption, but by then the sky was completely overcast, and was just going to turn gray and then get dark. When I arrived, I saw that some bison had passed through the formations between the boardwalk and the geysers, and left a couple large deposits of well used plant-life. These became a source of humor, especially when the One Burst Grand eruption started and began to erode them. The large one created a discolored streak that reached the boardwalk.

The eruption itself was during the West Triplet window. When West Triplet started, there was a sort Turban eruption interval. The next interval was much longer. Grand's pool slowly filled and stayed full, looking like it might be a Turban Delay interval instead. Finally there was an explosive start to the eruption. West Triplet ended during Grand's eruption.

2024-Jun-06:20:01:12 G1Q

 20:01:12	B1	--- d=10m42s
 20:01:15	Vent Ovfl	0m02s
 20:01:23	Turban	0m10s
 20:04:16	Vent	3m03s
 20:11:55	P1	10m42s
 20:13:02	V&T Quit	11m49s

				     	ΣD=10m42s
	* * * * *
 19:03:57			d=05m14s 
 19:22:07	Int: 18m09s	d=03m50s 
 19:36:11       West Triplet    d=30m57s      
 19:38:55	Int: 16m48s	d=03m55s 
		      Grand: 22m16s

Once again, was awakened by a call for Beehive's Indicator, this time before sunrise. Got over to Geyser Hill with plenty of time, but realized that I'd forgotten to bring my umbrella. Fortunately, didn't need it, as it was mostly calm and I could move fast enough to avoid the slowly migrating spray zone. We were the only two people over there.

With no report on the overnight Grand eruption, I went out at around the twelve hour mark. Turns out I was a bit early, as I overheard some NPS personnel who were downloading data say it was at 04:04. After an hour of longer Turban eruptions, there a 36 minute Turban Delay interval. From there it was a wait of five more Turban eruption intervals before the One Burst Grand eruption. This was a 9-1/2 minute long eruption where Vent & Turban continued afterwards. During the eruption, West Triplet started to erupt, but finished before the Grand eruption ended.

2024-Jun-05:11:35:58 D5/T1C

 11:34:40	Turban	-1m18s
 11:35:53	Boop	-0m05s
 11:35:58	B1	--- d=09m34s
 11:38:32	Vent	2m34s
 11:45:32	P1	9m34s
Vent & Turban continue

				     	ΣD=09m34s
	* * * * *
 08:42:42			d=03m57s 	
 09:05:21	Int: 22m39s	d=04m21s 	
 09:27:04	Int: 21m43s	d=04m38s 	
 10:04:49	Int: 37m45s	d=04m47s  D0	
 10:21:38	Int: 16m49s	d=04m15s  D1	
 10:40:43	Int: 19m05s	d=03m50s  D2	
 11:00:50	Int: 20m07s	d=03m45s  D3	
 11:17:18	Int: 16m28s	d=03m40s  D4	
		     Turban: 17m22s

Decided I should try and wait for something at the northern end of the Upper Basin, and as I rode up, Grotto Fountain was boiling up nicely. It didn't erupt, but I waited the hour for the next opportunity, where Grotto Fountain and Grotto did erupt. The wind shifted just enough so that my camera was not in the best place to record the activity, but I didn't want to move and adjust it while recording.

A few hours later arrived back out to Grand to find West Triplet late in an eruption. That turned out to be important, as over the next three hours Grand made no real attempt to erupt. There was a series of ten Turban eruptions where stayed pretty constant at around 3-1/2 minutes, with two exceptions where the durations were less than three.

Finally West Triplet started to erupt again and Grand went into a Turban Delay interval. At the 29minute mark, with the sun set, Grand finally erupted with an explosive start. This gave us an over 11 minute One Burst Eruption, followed almost immediately by the start of and eruption of Rift.

2024-Jun-05:20:55:17 D0/G1Q

 20:55:16	Vent Ovfl	-0m01s
 20:55:17	B1	--- d=11m28s
 20:55:54	Turban	0m37s
 20:57:40	Vent	2m23s
 21:06:45	P1	11m28s
 21:07:26	V&T Quit	12m09s

				     	ΣD=11m28s
	* * * * *
 17:43:16			d=04m15s 	
 18:02:49	Int: 19m33s	d=04m02s 	
 18:21:25	Int: 18m36s	d=03m32s 	
 18:41:07	Int: 19m42s	d=03m29s 	
 18:57:25	Int: 16m18s	d=02m43s 	
 19:15:59	Int: 18m34s	d=03m16s 	
 19:34:17	Int: 18m18s	d=03m33s 	
 19:52:18	Int: 18m01s	d=03m31s 	
 20:09:34	Int: 17m16s	d=03m32s 	
 20:26:15	Int: 16m41s	d=02m55s 
 20:33:45				West Triplet	
		      Grand: 29m02s

Rift erupted overnight, so not surprised to find that Grand had not yet erupted at dawn. Unfortunately, was preparing to head out when it did erupt. So went back to sleep for a few hours, then went out to Geyser Hill for the morning Beehive eruption.

Lion had been last seen almost 24 hours earlier, so decided I would wait over there. But it was cold and windy, and after about an hour or so, decided I'd had enough and headed in. Got as far as the Firehole River bridge when I heard the radio call for the Indicator. During most of the time the Indicator was erupting, the wind was moving the steam toward Plume, but as usual, it shifted to the north as the time for Beehive to start got closer. I decided to risk staying in place, and turns out I didn't have to worry. Being so close means that one doesn't notice the wind-sheared eruption as much.

After that, it was time to head out to Grand again, with the expectation of a longer wait due to Rift effects. But the interval was just over seven hours.

We've noticed recently that many Grand eruptions have Vent & Turban ending, with fewer where they continue. These Quit type eruptions are the result of either multiple bursts or long One Burst eruptions, while the Continue type eruptions are those that are a short One Burst Eruption. When we've had a shorter eruption, we end up getting a second burst that results in a Quit. That was the case again with this eruption, where the first burst lasted over 9-1/2 minutes and we still got our second burst.

2024-Jun-04:12:42:46 G2Q

 12:42:46	B1	--- d=09m35s
 12:43:43	Turban	0m57s
 12:46:38	Vent	3m52s
 12:52:21	P1	9m35s d=46s
 12:53:07	B2	10m21s d=53s
 12:54:00	P2	11m14s
 12:54:42	V&T Quit	11m56s

				     ΣB=10m28s	ΣD=11m14s
	* * * * *
 12:01:09			d=03m45s 	
 12:22:35	Int: 21m26s	d=04m05s 	
		      Grand: 20m11s

Having expected to wait a while at Grand, decided to continue on down basin and see what Fan & Mortar had to offer. Went there also to test out some new features in my geyser logging application.

Arrived to find that everything was quiet. I thought I saw River and the other Fan vents start, but that activity only lasted a few minutes. Then Bottom Vent started splashing, and I saw splashes in Main Vent. The activity in Main Vent lasted for over thirty minutes, and some of the splashes were wide and as tall as the formations to the north/right. Bottom went into a full eruption that also lasted over half an hour.

The remainder of the cycle was anticlimactic, as the Fan Vents never came close to showing any good activity. The only good thing to note is that Angle Vent was quiet except during the period of time when it needed to be on after High and Gold were fully engaged in erupting.

F&M Test_2024-Jun-04_1318
---------------
2024-Jun-04
13:18      All quiet                               F&M Cycle
13:20      River start                             F&M Cycle
13:21      Gold & High start                       F&M Cycle
13:31      Vents quiet                             F&M Cycle
13:32      River quiet                             F&M Cycle
13:34      Bottom splashing                        F&M Cycle
13:35      Main splash                             F&M Event
13:39      Main splash                             F&M Event
13:42      Main splash                             F&M Event
13:45      Main splash                             F&M Event
13:49      Main splash                             F&M Event
13:50      Main splash                             F&M Event
13:51      Bottom quiet                            F&M Cycle
13:51      River start                             F&M Cycle
13:51      Bottom start                            F&M Cycle
13:53      River quiet                             F&M Cycle
13:54      Main splash                             F&M Event
13:57      Main splash                             F&M Event
14:00      Bottom start                            F&M Cycle
14:01      Main splash                             F&M Event
                    As high as back formation 
14:03      Main splash                             F&M Event
14:05      Bottom erupting                         F&M Cycle
                    Water has reached the river
14:09      Main splash                             F&M Event
14:30      River start                             F&M Cycle
14:31      Gold & High splashing                   F&M Cycle
14:36      Bottom end                              F&M Cycle
14:38      Gold & High start                       F&M Cycle
14:47      Angle st                                F&M Cycle
14:49      >>> Eruption                            Riverside
14:50      Gold & High quiet                       F&M Cycle
14:54      Vents restart                           F&M Cycle
15:02      Gold & High quiet                       F&M Cycle

Arrived out at Grand for the evening eruption just in time to see the first Turban eruption after a Turban Delay interval. From there we had to wait about two hours for the seventh in a series of similar Turban intervals and eruptions. When Grand finally erupted, Turban preceeded some booping by a few seconds, then the first burst lasted just over eight minutes. The total duration was just under ten minutes, which was short enough that Vent and Turban did not quit.

2024-Jun-04:20:44:43 T2C

 20:44:37	Turban	-0m06s
 20:44:43	B1	--- d=08m11s
 20:47:33	Vent	2m50s
 20:52:54	P1	8m11s d=54s
 20:53:48	B2	9m05s d=54s
 20:54:42	P2	9m59s
Vent & Turban continue

				     ΣB=09m05s	ΣD=09m59s
	* * * * *
 18:52:47			d=03m43s 	
 19:12:37	Int: 19m50s	d=03m45s 	
 19:31:06	Int: 18m29s	d=03m35s 	
 19:49:42	Int: 18m36s	d=03m55s 	
 20:08:16	Int: 18m34s	d=03m22s 	
 20:26:58	Int: 18m42s	d=03m06s 	
		     Turban: 17m39s

It was drizzly heading out for the morning Grand eruption, and it was getting wetter. Had to dodge a bison twice, as it was blocking the bike trail, and when I tried to use the gravel bypass, it had move to block that trail. I walked up on Turban erupting, and I took most of the Turban interval to get prepared for the increasing rain.

The pool was full when Turban had an explosive start, and stayed full. Grand finally started erupting almost 1-3/4 minutes later. The first burst lasted almost 9-1/2 minutes, which is long enough for a One Burst eruption, but as the steam cleared, water was visible in Grand's pool. A short pause, and we got a nice second burst.

2024-Jun-03:06:50:47 T2Q

 06:49:05	Turban	-1m42s
 06:50:47	B1	--- d=09m25s
 06:53:12	Vent	2m25s
 07:00:12	P1	9m25s d=54s
 07:01:06	B2	10m19s d=32s
 07:01:38	P2	10m51s
 07:02:23	V&T Quit	11m36s

				     ΣB=09m57s	ΣD=10m51s
	* * * * *
 06:32:20			d=02m52s 	
		     Turban: 16m45s

The weather forecast said that the rain might subside in an hour. What the forecast left out was that the rain wasn't that heavy, but it was windy. Decided to walk instead of riding a bike to Castle to see the next Grand eruption.

Arrived just in time for the first Turban eruption after the Turban Delay interval. For the next hour, it was wet and windy and Grand showed no sign of trying to erupt. Then the rain started to let up, and we got a longer Turban eruption interval and waves on a full pool. Unfortunately, the Big Sawmill mode at around the eight minute mark didn't result in a pause, so we got a One Burst Grand instead. At least most of the walk back we only had to contend with wind.

2024-Jun-03:14:18:01 G1Q

 14:18:01	B1	--- d=11m40s
 14:18:24	Turban	0m23s
 14:21:36	Vent	3m35s
 14:29:41	P1	11m40s
 14:30:09	V&T Quit	12m08s

				     	ΣD=11m40s
	* * * * *
 13:21:32			d=03m30s 	
 13:40:08	Int: 18m36s	d=03m23s 	
 13:56:50	Int: 16m42s	d=03m28s 	
		      Grand: 21m11s

A few hours later came a report of Beehive's Indicator. One look out the cabin window at the rain and wind and we decided that others didn't need our presence to enjoy the eruption.