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Observations for 2023 August 25


Not knowing when Grand erupted overnight, I went out at the twelve hour mark. Turned out that was a bit early, but I did get to see Castle have a major eruption after having a second minor eruption overnight. Grand also had an early Turban Delay interval. About 32 minutes in, I heard a boil or boop from Grand. It was another three minutes until Turban finally erupted, so a boop then fits the usual pattern.

On the second Turban interval, Grand's pool looked good enough to erupt, but didn't, and it took Grand two more Turban eruptions before we got the One Burst Grand eruption. Beehive also erupted during that wait.

2023-Aug-25:11:20:27 D4/T1Q

11:20:16	Turban		-0m10s
11:20:23	Vent Ovfl	-0m03s
11:20:27	Grand B1	---	d=10m49s
11:23:17	Vent		2m50s
11:31:16	P1		10m49s
11:32:19	V&T Quit	11m52s

				     	ΣD=10m49s
	* * * * *
09:33:50			
10:06:38	Int: 32m48s	d=5m46s  D0 Boop: 10:03:57	
10:25:10	Int: 18m32s	d=4m36s  D1	
10:44:22	Int: 19m12s	d=3m48s  D2	
11:01:57	Int: 17m35s	d=4m25s  D3	
		     Turban: 18m19s

For the afternoon Grand eruption there was finally no Turban Delay interval. Just a series of Turban eruptions. The interval was about one Turban Interval longer than expected, at just over 6-1/2 hours. Just before Grand did erupt I saw what I thought was Uncertain. It was hard to tell, as at first it was a thin, continuous water column about as high as an Uncertain eruption. Then the column was interrupted by pauses, and finally just quit without going into a mild steam phase. It was just Tardy having one of its weird Sawmill Group Deep Drain eruptions. It was hard to tell at first without landmarks (or tourists standing nearby) and because it just didn't look like Tardy.

The Grand eruption itself had an 8m20s first burst, nicely followed by a second. Grand's vent showed water for a third, but drained after about ten seconds. Was a bit surprised to see Vent & Turban continue.

2023-Aug-25:17:59:51 G2C

17:59:48	Boop		-0m02s
17:59:51	Grand B1	---	d=8m23s
18:00:40	Vent Ovfl	0m49s
18:00:45	Turban		0m54s
18:03:48	Vent		3m57s
18:08:14	P1		8m23s	d=0m40s
18:08:55	B2		9m04s	d=0m53s
18:09:49	P2		9m57s
Vent & Turban continue

				     ΣB=9m17s	ΣD=9m57s
	* * * * *
16:41:13			
16:57:18	Int: 16m05s	d=4m14s 	
17:18:03	Int: 20m45s	d=3m30s 	
17:38:29	Int: 20m26s	d=4m28s 
		      Grand: 21m22s

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Observations for 2023 August 24


Out to Grand on a foggy, damp morning. Only waited one Turban eruption interval, which turned into a Turban Delay eruption interval of 33-1/2 minutes. Because of the fog, it was hard to tell what the pool was doing after Turban started erupting. But a minute in, Turban was still powerful and vigorous, and the steam over Grand's pool seemed to have increased. So I wasn't surprised when after 1-1/2 minutes of Turban erupting, Grand started also. This was another long One Burst Grand eruption lasting almost 11-1/2 minutes.

2023-Aug-24:08:22:35 D0/T1Q

08:21:06	Turban		-1m29s
08:22:35	Grand B1	---	d=11m29s
08:24:48	Vent		2m13s
08:34:04	P1		11m29s
08:34:59	V&T Quit	12m24s

				     	ΣD=11m29s
	* * * * *
07:47:37			d=4m26s 	
		     Turban: 33m29s

With Little Squirt active yesterday, and nothing much else going on, decided to spend time on Geyser Hill over by Aurum. The vents were splashing around, but I don't know enough about it to know if we were close to an eruption. In any case, about a half hour later we got the call for Beehive's Indicator. I arrived at the benches just in time for Beehive to have a huge surge and being erupting. After the Beehive eruption, Lion had the second eruption of its series.

The midday Grand eruption was similar to this mornings, where once again Grand erupted after over 31 minutes of a Turban Delay interval. This time Grand started the eruption with an explosive burst as high as the trees, as seen from the benches. And once again, it was a long One Burst Eruption.

2023-Aug-24:14:46:47 D0/G1Q

14:46:47	Grand B1	---	d=11m04s
14:47:43	Turban		0m56s
14:48:52	Vent Ovfl	2m05s
14:50:16	Vent		3m29s
14:57:51	P1		11m04s
14:58:46	V&T Quit	11m59s

				     	ΣD=11m04s
	* * * * *
13:55:41			d=4m11s 	
14:15:45	Int: 20m04s	d=4m38s 	
		      Grand: 31m02s

Went out early for the next Grand, because it was the first nice sunset, with no wind or clouds, in quite a while. Ended up seeing another Turban Delay interval, this time at the 5-1/2 hour mark. But the One Burst Grand occurred only three Turban eruption intervals later, so the Grand interval was just over 6-1/2 hours. By then it was dark. Only four geyser gazers were there for the start, but the quarter moon gave plenty of light so no flashlights were used.

2023-Aug-24:21:25:44 D3/G1C

21:25:44	Grand B1	---	d=10m33s
21:36:17	P1		10m33s
Vent & Turban continue

				     	ΣD=10m33s
	* * * * *
19:55:23			
20:28:21	Int: 32m58s	d=5m28s  D0	
20:46:57	Int: 18m36s	d=4m48s  D1	
21:05:27	Int: 18m30s	d=4m01s  D2	
		      Grand: 20m17s

The last several minutes of the eruption were Big Sawmill mode, and just as Grand ended, Castle started. The minor eruption was over by the time I was packed up and walked over there. Not unexpected, as there have been several major Castle eruptions in a row.


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Observations for 2023 August 23


Rift had quit erupting by the time I got out to Grand. Not knowing the start or end time, but I suspect the eruption lasted less than three hours.

So it was a bit of a surprise when there was a Turban Delay interval just after the six hour mark. With no Grand eruption, that meant that the Grand interval would be the longer expected with Rift activity.

Six Turban eruptions later, there was a second Turban Delay interval. Fortunately, Grand had a One Burst Eruption about 31 minutes after the previous Turban eruption.

2023-Aug-23:12:37:59 D6/D0/T1Q

12:37:50	Turban		-0m09s
12:37:53	Vent Ovfl	-0m06s
12:37:59	Grand B1	---	d=11m28s
12:40:32	Vent		2m33s
12:49:27	P1		11m28s
12:49:47	V&T Quit	11m48s

				     	ΣD=11m28s
	* * * * *
10:01:13			d=3m18s 	
10:35:45	Int: 34m32s	d=4m26s  D0	
10:53:58	Int: 18m13s	d=4m19s  D1	
11:12:09	Int: 18m11s	d=3m30s  D2	
11:30:48	Int: 18m39s	d=3m52s  D3	
11:49:33	Int: 18m45s	d=3m51s  D4	
12:07:37	Int: 18m04s	d=3m34s  D5	
		     Turban: 30m13s

Afterward, Bulger was frequently rumbling, while Belgian and Crystal were both extremely low. Sawmill had been erupting for most of our Grand wait, but was now quiet, and Uncertain did not look like it would erupt.

Crystal Spring, 2023 August 23.

Afterwards, realized it had been 17 hours since we had seen Castle erupt last night. Turned out that Castle needed an additional half hour to finally erupt, and even then there were multiple pauses during the first five minutes. But it finally stopped pauseing and we had the second major eruption in a row.

Going out to Beehive after the Indicator call, we first saw Little Squirt in eruption, then the Lion eruption starting a series. Once again it was windy, but the wind didn't shift so only a portion of the boardwalk west of Plume got doused.

Went out for Grand expecting it near sunset. There was a series of undistinguished Turban eruptions, then Grand filled quickly and we got the One Burst Eruption on the last opportunity before sunset. This time the duration was less than ten minutes.

2023-Aug-23:19:31:52 G1C

19:31:51	Vent Ovfl	-0m01s
19:31:52	Grand B1	---	d=9m38s
19:34:59	Vent		3m06s
19:41:30	P1		9m38s
Vent & Turban continue

				     	ΣD=9m38s
	* * * * *
18:18:41			d=4m40s 
18:35:43	Int: 17m02s	d=3m57s 
18:55:01	Int: 19m18s	d=3m39s 
19:14:27	Int: 19m25s	d=3m55s 
		      Grand: 17m25s

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Observations for 2023 August 22


Got out to Grand at the 12-1/2 hours mark, and didn't have enough time to get set up before the eruption started. It was a two burst eruption, and once again, around the 40 second mark of the second burst Grand went into Big Sawmill mode where it looked like it was going to stop, but would keep thrashing around with jets and boils less than 10 meters high.

2023-Aug-22:06:28:24 G2*Q

06:28:24	Grand B1	---	d=8m58s
06:29:10	Turban		0m46s
06:31:45	Vent		3m21s
06:37:22	P1		8m58s	d=0m52s
06:38:15	B2		9m51s	d=2m27s
06:39:03	FP		10m39s
06:40:42	P2		12m18s
06:41:21	V&T Quit	12m57s

				     ΣB=11m25s	ΣD=12m18s

After breakfast, went out to see this morning's Castle minor eruption. It lasted about 5-1/2 minutes, and was already having pauses at the three minute mark.

The weather was heavily overcast, but with little rain forecast. Unfortunately, there were showers showing on the radar map headed our way. At around the six hour mark, Grand had a strong Turban Eruption Interval which caused the eruption to finally happen five Turban intervals later. Fortunately, the showers didn't really appear, although after yesterday I didn't take any chances.

Once again, Grand had a short first burst and a long second, where the second was long (this time by one second) and much of that time was in Big Sawmill mode. Not only that, but the whole eruption lasted less than ten minutes.

2023-Aug-22:14:09:28 D5/T2*Q

14:08:45	Turban		-0m43s
14:09:03	Vent Ovfl	-0m24s
14:09:16	Boop		-0m11s
14:09:28	Grand B1	---	d=7m56s
14:12:06	Vent		2m38s
14:17:25	P1		7m56s	d=0m34s
14:18:00	B2		8m31s	d=1m16s
14:19:08	FP		9m40s
14:19:16	P2		9m48s
14:20:19	V&T Quit	10m50s

				     ΣB=9m13s	ΣD=9m48s
	* * * * *
11:49:35			
12:08:48	Int: 19m13s	d=4m16s 	
12:41:34	Int: 32m46s	d=4m43s  D0	
12:58:30	Int: 16m56s	d=3m49s  D1	
13:16:22	Int: 17m52s	d=3m59s  D2	
13:34:28	Int: 18m06s	d=3m39s  D3	
13:51:36	Int: 17m08s	d=3m47s  D4	
		     Turban: 17m09s

Beehive finally erupted a few hours later. The wind by that time was steady and strong, so I decided that the railing near Plume would be save, and it was. The winds didn't shift during the eruption, so the only area that got wet were the two benches and the wide platform. Since Old Faithful erupted at the same time, the crowd for Beehive was small.

It took six Turban eruption intervals from arrival at sunset to the One Burst Grand eruption. During that time we got to see Daisy erupt, a magenta sunset, and Castle finally have its major eruption after this morning's minor eruption. Grand was a disappointment, as the duration was just under 9-3/4 minutes. A minute after the eruption ended Vent & Turban got quite powerful, then calmed back down.

2023-Aug-22:21:54:00 G1C

21:53:55	Boop		-0m04s
21:54:00	Grand B1	---	d=9m41s
22:03:41	P1		9m41s
Vent & Turban continue

				     	ΣD=9m41s
	* * * * *
19:57:19		
20:16:38	Int: 19m19s	d=4m32s 
20:35:36	Int: 18m58s	d=4m14s 
20:55:20	Int: 19m43s	d=4m03s 
21:13:10	Int: 17m50s	d=3m59s 
21:31:46	Int: 18m35s	d=3m46s 
		      Grand: 22m13s

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Observations for 2023 August 21


A much nicer day than yesterday, although did have to wait about an hour in the morning for the last of the showers to end. Out at Grand it quickly went from cool to calm, sunny, warm and humid.

Before going to Grand, I was able to catch a short Castle minor eruption. Grand had a nice steamy backlit two burst eruption where the pool actually held water for about ten seconds after that second burst. Once again Grand erupted at the first opportunity after the six hour mark, so I expect until the next Rift eruption to be out there on the short side of the interval.

2023-Aug-21:10:18:40 G2Q

10:18:37	Boop		-0m03s
10:18:40	Grand B1	---	d=8m47s
10:19:29	Turban		0m49s
10:20:50	Vent Ovfl	2m10s
10:21:52	Vent		3m12s
10:27:27	P1		8m47s	d=0m35s
10:28:02	B2		9m22s	d=0m58s
10:29:00	P2		10m20s
10:29:48	V&T Quit	11m08s

				     ΣB=9m45s	ΣD=10m20s
	* * * * *
09:03:37			
09:18:33	Int: 14m56s	d=4m39s 	
09:40:12	Int: 21m39s	d=4m49s 	
09:59:08	Int: 18m56s	d=4m37s 	
		      Grand: 19m32s

And of course, before completely packed up from the Grand eruption there is the radio call for Beehive's Indicator starting. Instead of treking to Geyser Hill, I decided to watch from Sawmill, which was in eruption.

There were still showers in the forecast when it was time to head out to Grand, but no rain right then. A hour later we got heavy winds, heavy rain and raisin sized hail between two Turban eruptions, and then another shower as Grand erupted.

The leadup to the Grand eruption was different. Right after the hailstorm there was a short Turban eruption interval, followed by an extremely short Turban eruption duration of just over 2-1/2 minutes. Then the Turban intervals got even shorter. Grand's pool was full within ten minutes, and the overflow could be heard as soon as eleven minutes after the Turban eruption.

Three Turban eruption intervals later Grand's pool was full and it slowly over the span of about five minutes built into waves and then some boops. It was so humid and steamy that I could not see any of the side activity. But the first burst ended after only 7-1/4 minutes. The pause was short, but the second burst ended up lasting about 2-3/4 minutes. After the first 50 seconds, it appeared as if the burst was going to end, and that was when we went into Big Sawmill mode for the rest of the eruption,

2023-Aug-21:17:55:00 G2*Q

17:54:57	Boop		-0m03s
17:55:00	Grand B1	---	d=7m15s
18:02:15	P1		7m15s	d=0m20s
18:02:35	B2		7m35s	d=2m42s
18:05:17	P2		10m17s
18:06:44	V&T Quit	11m44s

				     ΣB=9m57s	ΣD=10m17s
	* * * * *
15:42:47			
16:01:24	Int: 18m37s	d=3m52s 	
16:23:20	Int: 21m56s	d=4m31s 	
16:42:49	Int: 19m29s	d=4m14s 	
17:01:19	Int: 18m30s	d=2m39s 	
17:19:03	Int: 17m44s	d=3m14s 	
17:35:13	Int: 16m10s	d=4m01s 	
		      Grand: 19m47s

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Observations for 2023 August 19


A cool damp day that threatened to rain at any time. Out at Grand we saw a couple of Turban eruptions before we got a Turban Delay Interval. It was relatively short (28 minutes) and Grand's pool never looked like an eruption was emminent. Three Turban intervals later, the pool did look good. Turban started, and it took Grand nearly two minutes to finally erupt, from a pool that mostly filled after Turban had started. For the first time in days, Grand had a short first burst, but a second burst lasting 2-1/2 minutes.

2023-Aug-19:09:27:48 D3/T2*Q

09:26:07	Turban		-1m41s
09:27:48	Grand B1	---	d=8m13s
09:29:55	Vent		2m07s
09:36:01	P1		8m13s	d=0m41s
09:36:42	B2		8m54s	d=2m31s
09:39:13	P2		11m25s
09:39:53	V&T Quit	12m05s

				     ΣB=10m44s	ΣD=11m25s
	* * * * *
07:24:49			
07:44:12	Int: 19m23s	d=4m23s 	
08:03:48	Int: 19m36s	d=4m27s 	
08:31:52	Int: 28m04s	d=4m24s  D0	
08:48:28	Int: 16m36s	d=4m13s  D1	
09:07:53	Int: 19m25s	d=4m08s  D2	
		     Turban: 18m14s

Went out to Grand early in anticipation of rain. Turned out we got a few sprinkles during the wait, but far less than the forecast and weather radar would have indicated.

Once again Grand had a Turban Delay Interval on the first Turban eruption after I arrived. Three intervals later Grand had a strong fill, failed to erupt on a otherwise normal Turban interval. It was two more Turban intervals after that before we did get a Grand eruption that lasted just over ten minutes.

2023-Aug-19:16:46:17 G1C

16:46:11	Boop		-0m06s
16:46:17	Grand B1	---	d=10m06s
16:46:21	Vent Ovfl	0m04s
16:46:48	Turban		0m31s
16:49:23	Vent		3m06s
16:56:23	P1		10m06s
Vent & Turban continue

				     	ΣD=10m06s
	* * * * *
15:15:04			d=5m23s 	
15:33:02	Int: 17m58s	d=3m35s 
15:50:56	Int: 17m53s	d=3m44s 
16:10:00	Int: 19m03s	d=3m38s 
16:28:11	Int: 18m11s	d=3m46s 
		      Grand: 18m06s

All day Beehive was expected to erupt, but didn't. The eruption wasn't until nearly 19:00, for a 34 hour interval.


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Observations for 2023 August 17


Sleeping in too long means going out to Grand and barely catching the early daylight eruption. Did get out early enough to see the Turban eruption where Grand didn't overflow, and then get the almost 12 minute One Burst Grand eruption.

2023-Aug-17:08:36:51 G1Q

08:36:45	Boop		-0m06s
08:36:51	Grand B1	---	d=11m50s
08:37:14	Vent Ovfl	0m23s
08:37:28	Turban		0m37s
08:40:09	Vent		3m18s
08:48:41	P1		11m50s
08:49:26	V&T Quit	12m35s

				     	ΣD=11m50s
	* * * * *
08:11:51			d=4m39s 	
		      Grand: 25m00s

Afterwards noticed that a number of the features in the Sawmill Group had water levels much higher than usual. So I got to see Oval Spring erupt to about 1/2 meter from a full pool, then drop about 30-50 cm afterwards. Spasmodic was high, but nowhere near overflow.

Down at Fan & Mortar there was some event activity, with Bottom Vent erupting enough to put water down to the river, multiple large splashes from Main Vent, and Lower Mortar high and vigorous. But nothing much came of it, other than the Fan vents showed a short resurgence just as everyone was about to leave.

In the afternoon there was another Turban Delay Interval followed by seven more intervals before we got the long One Burst Grand Eruption. This one featured multiple false pauses during the nearly twelve minute long eruption.

2023-Aug-17:16:55:45 D7/T1Q

16:54:58	Turban		-0m46s
16:55:15	Vent Ovfl	-0m29s
16:55:45	Grand B1	---	d=11m05s
16:58:12	Vent		2m26s
17:04:04	FP		8m18s
17:05:10	FP		9m25s
17:06:50	P1		11m05s
17:07:36	V&T Quit	11m50s

				     	ΣD=11m05s
	* * * * *
14:05:48			d=4m19s 	
14:24:00	Int: 18m11s	d=4m33s 
14:49:18	Int: 25m18s	d=5m29s  D0	
15:07:55	Int: 18m37s	d=3m38s  D1
15:27:06	Int: 19m10s	d=4m11s  D2
15:45:49	Int: 18m43s	d=4m00s  D3
16:03:57	Int: 18m08s	d=3m34s  D4
16:20:43	Int: 16m45s	d=3m04s  D5
16:37:44	Int: 17m01s	d=3m37s  D6
		     Turban: 17m13s

While walking away past Sawmill, there came the call for Beehive's Indicator, so made the side trip to Geyser Hill. Because of the wind direction, from the railing near the sign I was able to see a bright, double rainbow centered over Plume.


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Observations for 2023 August 16


When I saw that it had been over seven hours since the Grand eruption we were at last night, I went on out again. Waited a full Turban eruption interval and then got a steamy One Burst Grand that lasted less than 9-1/2 minutes.

2023-Aug-16:06:54:49 T1C

06:53:00	Turban		-1m49s
06:54:49	Grand B1	---	d=9m19s
06:56:53	Vent		2m04s
07:04:08	P1		9m19s
Vent & Turban continue

				     	ΣD=9m19s

With Beehive active before dawn, it seemed like a good Lower Basin day. Since nothing expected from Fountain for a few hours, rode the bikes out to Great Fountain.

Arrived there and the water level was high, but well below overflow. After an hour, and several White Dome eruptions, Great Fountain overflowed for a few minutes, the receded below the level it was at when we arrived. It was another 40 minutes before the real overflow began.

The overflow lasted 80 minutes, and up until the 70 minute mark, we had the place to ourselves. During most of that time White Dome was quiet. That's when two families arrived. The pause at the start of the eruptions lasted about 1-1/2 minutes. The action wasn't Great Flounder class, but was definitely nothing big or spectacular. There were a few nice bursts angled toward the benches.

We stayed until the end of the third burst. On the way back Pink Cone was in eruption, which was a nice bonus.

When I went out to Grand for the sunset eruption, there was so much overcast (and probably smoke) that the sky was mostly gray. West Triplet was just starting to overflow, which is the first time I've seen that since early in this visit.

After a couple of Turban eruptions, Grand started to behave as if there was going to be a Turban Interval Delay. At around the 23 minute mark the boops started, and lasted for a full minute. Some of the boops were several meters high and wide. The start of Grand's One Burst Eruption was weak, but it lasted almost 12-1/2 minutes with few slowdowns. It took over a minute for Turban to start erupting, and it was finished within seconds of the end of Grand's activity.

2023-Aug-16:19:37:21 G1Q

19:36:20	Boop		-1m01s
19:37:21	Grand B1	---	d=12m24s
19:38:26	Turban		1m05s
19:39:31	Vent Ovfl	2m10s
19:41:05	Vent		3m44s
19:49:45	P1		12m24s
19:49:57	V&T Quit	12m36s

				     	ΣD=12m24s
	* * * * *
18:53:58			d=4m35s 	
19:13:21	Int: 19m23s	d=4m36s 	
		      Grand: 24m00s

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Observations for 2023 August 15


Grand wasn't erupting as I biked past the Lodge. It was erupting as I approached the Inn. I turned around and let others enjoy the One Burst Eruption (and it was one) to go back to sleep for a while longer.

A few hours later, was expecting Beehive, but probably not soon. So intended to wait over by Aurum for the Indicator call. Waited less than ten minutes. Between the call and Beehive's eruption, also witnessed the second Lion eruption of the series, and a Plate eruption. I haven't seen Plate up from on Geyser Hill in a few years, and it seemed to me that the eruption was much larger than way back then. Beehive itself erupted in almost dead calm condition, with the spray and condensation settling on the walkway down by Plume.

For the next Grand we only had to wait for a few Turban eruption intervals before we got the Grand eruption a bit late in its early window. The first burst lasted almost 9-1/2 minutes, so it was a pleasant surprise to once again see a minute's worth of sloshing about in Grand's crater before we got the second burst. Despite the length of the eruption, over 11 minutes, Vent & Turban did not quit this time.

2023-Aug-15:12:51:06 G2C

12:51:06	Grand B1	---	d=9m26s
12:52:08	Turban		1m01s
12:54:31	Vent		3m24s
13:00:33	P1		9m26s	d=0m39s
13:01:12	B2		10m05s	d=0m56s
13:02:09	P2		11m02s
Vent & Turban continue

				     ΣB=10m23s	ΣD=11m02s
	* * * * *
11:52:14			d=5m34s 
12:11:20	Int: 19m06s	d=4m35s 
12:30:51	Int: 19m30s	d=4m32s 
		      Grand: 20m15s

For the next Grand wait, went out about three hours after the start of a Rift eruption. Did not expect or intend to be still out there four hours later.

When I arrived, I noticed a new sputtering hole, or at least one I didn't remember seeing previously. It is located about 1.5 meters from Sput D, directly on the line between Sput D and West Triplet. The vent is tiny, and the sputtering was only a few centimeters high. But it continued, along with Sput D's activity, as long as Rift was erupting. Until I can confirm that I didn't use the designation before, I'll refer to this as Sput G.

Sput G (in box) and Sput D erupting.

The second Turban eruption since my arrival was a Turban Delay Interval. From there, it took twelve more intervals before we finally got the One Burst Grand eruption. Rift itself ended after the fourth interval, for an approximate duration of five hours.

2023-Aug-15:22:39:31 D12/T1Q

22:38:35	Turban		-0m55s
22:39:31	Grand B1	---	d=10m25s
22:41:39	Vent		2m07s
22:48:58	FP		9m26s
22:49:56	P1		10m25s
22:50:52	V&T Quit	11m21s
22:59:52	V&T Restart	20m21s

				     	ΣD=10m25s
	* * * * *
18:30:09			
19:04:20	Int: 34m10s	d=4m17s  D0
19:21:01	Int: 16m41s	d=4m25s  D1
19:39:27	Int: 18m26s	d=3m49s  D2
19:59:08	Int: 19m40s	d=3m41s  D3
20:16:18	Int: 17m10s	d=3m51s  D4
20:35:37	Int: 19m19s	d=3m52s  D5
20:54:18	Int: 18m41s	d=3m35s  D6
21:11:28	Int: 17m10s	d=3m18s  D7	
21:28:37	Int: 17m08s	d=3m29s  D8
21:46:46	Int: 18m08s	d=3m33s  D9
22:04:23	Int: 17m37s	d=3m49s  D10
22:22:51	Int: 18m27s	d=3m21s  D11
		     Turban: 15m44s

Just before Grand erupted we got a little diversion. Ben Vanderley noticed that Bulger was erupting, and it was a major. In the dark, the gazers waiting for Grand ran down there, to the confusion of various visitors who were still waiting in the dark for Grand. Within a minute of Bulger starting, Bulger's Hole began erupting.

It was a strong eruption, with heights to about 4 meters at times. The activity slowed down twice as if the eruption was ending, then came back strong. There wasn't any sound effects from the Hole when it drained. The total duration of the eruption was about three minutes.

After Grand we hung around Bulger in case there was a second major and Bulger's Hole eruption, but after about 1/2 hour it was obvious that the one eruption was it. As we walked away, we noticed that Sawmill was quiet and Uncertain was steaming gently. It seemed obvious that in the dark we'd missed an eruption, about 20 minutes earlier, perhaps during an eruption of Old Tardy.


Posted on

Observations for 2023 August 14


In the morning there wasn't a Turban Delay Interval, just a series of non-descript Turban eruptions which finally led up to a One Burst Grand eruption. It seems like the start of the Grand window has shifted back about 45 minutes.

2023-Aug-14:09:24:41 G1Q

09:24:41	Grand B1	---	d=10m51s
09:25:42	Turban		1m01s
09:26:54	Vent Ovfl	2m13s
09:28:34	Vent		3m53s
09:35:32	P1		10m51s
09:36:24	V&T Quit	11m43s

				     	ΣD=10m51s
	* * * * *
08:20:02			d=4m10s 	
08:41:53	Int: 21m51s	d=4m32s 	
09:03:16	Int: 21m23s	d=4m32s 	
		      Grand: 21m25s

One the way back, saw something new and different. From Sawmill, we saw an ATV driving south toward Castle. The driver stopped there, got out and looked around for a while. Tried to get close enough to take some pictures, but he drove off before I could get close. I did see him drive up to the front of the Inn. I joked that it was probably someone claiming to use it because of a disability. The NPS was informed of this, and I heard that the Law Enforcement types wanted to find him, because they thought he might try driving down the Fountain Freight Road or Firehole Lake Drive. They did find an RV in the East Lot that had an empty trailer with the ramps down.

Found out late I wasn't far off. The person appeared at the Visitor Center to complain about disability access, and was told that he got to talk to Law Enforcement about how a licensed vehicle is not a mobility device.

Unrelated, but also from the radio-- doing 64 in the 25 zone at the West Entrance station will get you a mandatory visit to the magistrate in Mammoth.

Had time to kill, so went down to Fan & Mortar for a few hours. Everything was dry, and nothing happened for the first half hour I was there. Then there was the usual progression over the next half hour of vents starting and stopping. Twenty minutes after River had quit it was back on and another cycle started. This time the activity lasted about 20 minutes. After about ten minutes of no activity, I drifted away to catch Daisy.

The Daisy eruption was pretty much normal, with the usual duration of 3m20s.

In the afternoon at Grand, we got a short Turban Delay Interval of only 28 minutes. It was three Turban Intervals later that Grand erupted. The first burst lasted less than nine minutes, while the second was two seconds under the limit to be considered a Long Second. Even then, Grand toyed with us by having the crater start to refill before draining and Turban and Vent quitting.

2023-Aug-14:16:31:16 D3/G2Q

16:31:16	Grand B1	---	d=8m56s
16:31:53	Vent Ovfl	0m37s
16:32:05	Turban		0m49s
16:34:34	Vent		3m18s
16:40:12	P1		8m56s	d=0m42s
16:40:54	B2		9m38s	d=1m13s
16:42:07	P2		10m51s
16:43:06	V&T Quit	11m50s
16:51:53	V&T Restart	20m37s

				     ΣB=10m09s	ΣD=10m51s
	* * * * *
15:07:20			d=4m32s 	
15:35:15	Int: 27m55s	d=4m29s  D0	
15:52:02	Int: 16m47s	d=5m00s  D1	
16:11:40	Int: 19m38s	d=4m16s  D2	
		      Grand: 19m36s

Went out near sunset to catch Castle, expecting a minor since there was a major eruption after midnight. Instead we got a consecutive major eruption.

After dark we got out to Grand just in time to catch the Turban which started the Delay Interval. The overflow was heavy around the 20 minute mark, then decreased to almost nothing by 25. Then it picked up. By 28 minutes the overflow was heavy again. Just as Turban started, it sounded like there was a boil over Grand, and the One Burst Eruption started. It lasted almost 11 minutes.

2023-Aug-14:22:50:57 D0/T1Q

22:50:54	Turban		-0m03s
22:50:57	Grand B1	---	d=10m56s
22:53:27	Vent		2m30s
23:01:53	P1		10m56s
23:02:47	V&T Quit	11m50s

				     	ΣD=10m56s
	* * * * *
22:17:08			d=4m46s 	
		     Turban: 33m46s

Posted on

Observations for 2023 August 13


As expected, Grand reverted to the shorter, six hour long intervals. So when I woke up and saw it was already in eruption, I went back to sleep.

Did go out early for the next eruption of Grand. Another One Burst Grand eruption, but once again, the interval was at the short end of the range. Windy and cool, and multiple times people between West Triplet and Rift got soaked.

2023-Aug-13:12:23:16 G1Q

12:23:09	Boop		-0m07s
12:23:16	Grand B1	---	d=11m21s
12:23:19	Vent Ovfl	0m03s
12:23:35	Turban		0m19s
12:26:23	Vent		3m07s
12:34:37	P1		11m21s
12:35:34	V&T Quit	12m18s

				     	ΣD=11m21s
	* * * * *
11:23:14			d=5m45s 	
11:42:54	Int: 19m40s	d=4m35s 	
12:03:17	Int: 20m23s	d=4m39s 	
		      Grand: 19m59s

Just afterwards, was in the middle of lunch when heard the call for Beehive's Indicator starting to erupt. The wind hadn't changed much, so was able to stand along the railing and look up at the water column, which was cut off a bit by the same wind.

Went out again several hours before sunset, prepared to return in the dark. Both Grand and Castle were due during the same time period, but Castle had a short minor eruption shortly after I got to Grand. The series of ordinary Turban eruptions ended at the last eruption just before sunset. From my usual vantage point, with the wind from the north, this One Burst Grand eruption had a full rainbow extending from Vent to near Sawmill. One again the boardwalk (and people waiting there) from West Triplet to Rift got a soaking.

2023-Aug-13:19:49:03 T1C

19:48:05	Turban		-0m58s
19:48:25	Vent Ovfl	-0m38s
19:49:03	Grand B1	---	d=9m50s
19:51:33	Vent		2m30s
19:58:54	P1		9m50s
Vent & Turban continue

				     	ΣD=9m50s
	* * * * *
18:10:52			d=4m10s 
18:30:14	Int: 19m21s	d=4m17s 
18:49:58	Int: 19m44s	d=4m21s 
19:09:31	Int: 19m33s	d=4m06s 
19:29:51	Int: 20m19s	d=3m56s 
		     Turban: 18m14s

After the Grand eruption, with Lion still active, this meant there was a good possibility of some sort of eruption from North Goggles. Back in the cabin to refit for a wait in the dark, and then walked up on North Goggles minor eruption within a couple of minutes. Nice to see it before it got cold and was still light.


Posted on

Observations for 2023 August 12


Went out to Grand before midnight, and caught what was probably another Turban Delay Interval. That eruption of Turban lasted almost six minutes, while the next Turban eruption had no overflow from Grand. So the One Burst Eruption most likely occurred on the fourth Turban Interval after the Eruption Delay (D4).

2023-Aug-12:01:03:41 G1Q

01:03:41	Grand B1	---	d=11m58s
01:04:27	Turban		0m46s
01:07:03	Vent		3m22s
01:15:39	P1		11m58s
01:16:32	V&T Quit	12m51s

				     	ΣD=11m58s
	* * * * *
Yesterday 23:48:33			d=5m55s 	
00:07:05	Int: 18m32s	d=4m42s 	
00:26:31	Int: 19m26s	d=4m01s 	
00:44:31	Int: 18m00s	d=4m12s 	
		      Grand: 19m10s

Less of a wait for the Grand eruption at dawn. Arrived in time to experience another Turban Delay Interval, but fortunately, the One Burst Grand was the result.

2023-Aug-12:07:12:31 G1Q

07:12:31	Grand B1	---	d=11m19s
07:13:49	Turban		1m18s
07:14:50	Vent Ovfl	2m19s
07:16:16	Vent		3m45s
07:23:50	P1		11m19s
07:24:41	V&T Quit	12m10s

				     	ΣD=11m19s
	* * * * *
06:47:44			d=0m54s 	
		      Grand: 24m47s

Tried to visit the Lower Basin, but arrived at a nearly full Paint Pots parking lot at 09:00 to see Fountain in eruption. It was over by the time we walked out there. Based on an observation of Great Fountain the previous evening, we also decided to try biking out to it on another time.

The mid-day Grand turned into the afternoon Grand when another Turban Interval Delay took eight more Turban eruptions to recover. This eruption of Grand started with about 16 seconds of boops, including one shot up to 8 meters high, angled to the south. The start of the eruption itself was unimpressive, but fortunately, we got a second burst that was much higher. The second burst ended with a total eruption duration less than ten minutes, so it was disappointing when Grand's pool immediately drained with no attempt to refill.

Grand super-boop
2023-Aug-12:15:53:56 D8/G2C

15:53:39	Boop		-0m16s
15:53:56	Grand B1	---	d=8m27s
15:54:50	Turban		0m54s
15:55:10	Vent Ovfl	1m14s
15:57:06	Vent		3m10s
16:02:23	P1		8m27s	d=0m41s
16:03:05	B2		9m08s	d=0m41s
16:03:46	P2		9m50s
Vent & Turban continue

				     ΣB=9m08s	ΣD=9m50s
	* * * * *
12:40:13			
12:55:54	Int: 15m41s	d=4m21s 	
13:31:24	Int: 35m30s	d=5m11s  D0	
13:49:19	Int: 17m55s	d=4m21s  D1	
14:08:06	Int: 18m47s	d=3m50s  D2	
14:25:49	Int: 17m43s	d=3m42s  D3	
14:44:10	Int: 18m20s	d=3m36s  D4
15:02:17	Int: 18m06s	d=3m47s  D5
15:19:14	Int: 16m57s	d=3m21s  D6
15:36:20	Int: 17m06s	d=3m44s  D7	
		      Grand: 17m35s

There is at least one raven which has learned to clean up after the crowd at Grand disperses. Sometimes there's been a companion, but it usually starts at the northern runoff and works its way down the benches. So far it's kept its distance from people but I expect them to start checking bags and packs at some point.

If Grand had erupted on the next Turban eruption instead of the one in which it did, this would not have been a four Grand day. Instead the One Burst Grand eruption came five minutes before midnight. There wasn't any Turban Delay Interval, just a series of Turban eruptions where the duration and the intervals were getting shorter. At around the eight minute mark in the eruption, there was a false pause, and then Grand continued for almost another three minutes.

2023-Aug-12:23:55:02 G1Q

23:54:50	Turban		-0m12s
23:55:02	Grand B1	---	d=10m55s
23:57:31	Vent		2m29s
00:03:10	FP		8m07s
00:05:57	P1		10m55s
00:06:49	V&T Quit	11m47s

				     	ΣD=10m55s
	* * * * *
21:48:14			d=4m29s 	
22:07:55	Int: 19m41s	d=4m04s 	
22:26:59	Int: 19m04s	d=3m49s 	
22:45:49	Int: 18m50s	d=4m02s 	
23:03:16	Int: 17m27s	d=4m03s 	
23:20:44	Int: 17m28s	d=3m15s 
23:37:26	Int: 16m42s	d=3m34s 
		      Turban: 17m23s

Posted on

Observations for 2023 August 11


Was awake, but looking for a reason to get up and moving and not finding out until the radio call for Beehive's Indicator was made. Got out in plenty of time for a concerted eruption with Old Faithful under clear, calm, fog-free conditions.

Later on went out to Grand not knowing the time of the overnight eruption. Watched a series of indifferent Turban eruptions until after about two hours there was a Turban eruption with a short durations and preceeded by little overflow from Grand. Grand erupted on the next opportunity.

The first burst lasted 9-1/2 minutes, which is the longest first burst I've seen in years. It took over a minute for the second burst to start, which again is pretty long. Nice to see that the nine minute mark is no longer an automatic indication of a One Burst Eruption.

2023-Aug-11:11:37:01 G2Q

11:36:57	Boop		-0m04s
11:37:01	Grand B1	---	d=9m28s
11:37:47	Turban		0m45s
11:38:40	Vent Ovfl	1m38s
11:40:07	Vent		3m05s
11:46:29	P1		9m28s	d=1m02s
11:47:32	B2		10m31s	d=0m44s
11:48:17	P2		11m15s
11:48:55	V&T Quit	11m53s

				     ΣB=10m12s	ΣD=11m15s
	* * * * *
09:41:58			d=4m35s 	
10:02:15	Int: 20m17s	d=4m40s 	
10:22:32	Int: 20m17s	d=4m45s 	
10:41:56	Int: 19m24s	d=4m10s 	
11:00:52	Int: 18m56s	d=3m38s 	
11:17:49	Int: 16m57s	d=3m56s 	
		      Grand: 19m12s

Later spend time at Giant, just to see what was happening, which was little to nothing. Bijou was on most of the time, with occasional slowdowns but no real pauses. Just as we were about to leave, Giant had a mini-Cone Filling burst, which even put some water out of the front rim. Haven't seen that much in a long time.

Left to go over to Daisy, where the eruption was normal in every way.

Saw the next eruption of Daisy just as I arrived at Grand for the next wait. Which was short, as ended up waiting for only two Turban Eruption Intervals. The second interval looked like it was going to become a Turban Delay Interval, but came up a minute short when suddenly Vent overflowed, Turban started followed by Grand, all in a matter of seconds. The first burst ended well before the nine minute mark, so it was no surprise to get the second burst. Even though the eruption barely lasted ten minutes, Vent & Turban quit.

2023-Aug-11:17:56:00 T2Q

17:55:54	Vent Ovfl	-0m05s
17:55:58	Turban		-0m01s
17:56:00	Grand B1	---	d=8m36s
17:58:51	Vent		2m51s
18:04:37	P1		8m36s	d=0m40s
18:05:17	B2		9m17s	d=0m53s
18:06:11	P2		10m11s
18:06:55	V&T Quit	10m55s

				     ΣB=9m30s	ΣD=10m11s
	* * * * *
17:12:24			d=2m50s 	
17:32:11	Int: 19m47s	d=4m35s 	
		     Turban: 23m47s

Posted on

Observations for 2023 August 10


Figured with Rift having erupted, Grand might have some longer intervals for a while. So today was the day to take care of various domestic tasks and a trip to West Yellowstone for supplies.

But first, went to Norris to see that we weren't missing much. The runoff channel of the south vent is completely filled at the bridge. It appears a section of the wall collapsed causing much debris to be washed down.

Did a walk around the Back Basin, where saw an eruption of Orby and the start of Vixen. When the duration passed seven minutes, decided to move on. It was still erupting several minutes later.

Got back in time to head out for Grand. Arrived just before the six hour mark, waited on Turban eruption interval, and got to see the One Burst Grand Eruption. Also saw another eruption of Tilt on the way back.

2023-Aug-10:15:41:19 T1Q

15:40:20	Turban		-0m59s
15:40:43	Vent Ovfl	-0m36s
15:41:19	Grand B1	---	d=10m06s
15:43:53	Vent		2m34s
15:51:26	P1		10m06s
15:52:29	V&T Quit	11m09s

				     	ΣD=10m06s
	* * * * *
15:21:32			d=4m47s 
		     Turban: 18m47s

It really does seem like Grand erupts on the first Turban eruption after the six hour mark, or it has a Turban Interval Delay and then erupts a couple of hours later.

Back in the cabin, I was working on the computer when I noticed something scurrying outside the door beside my truck. It was a strange looking ground squirrel. Not really an albino, as its markings were sort of visible, but its coloring was washed out. Probably got caught in an eruption of that peroxide geyser across the river.

Mutant squirrel

The next Grand eruption was going to be after dark. Went out a little early since Castle was also predicted for that time. From Grand we caught the start of the Castle minor eruption, which lasted about six minutes.

Grand cooperated nicely, starting on the first Turban eruption after the six hour mark. Just after the nine minute mark, the first burst had a false pause, followed by about ten seconds of individual jets to about 20m. (Grand was lit up, so it was easy to see.) The second burst was a bit unexpected, but nice to see that a second burst can occur with longer first bursts.

2023-Aug-10:21:55:11 G2Q

21:55:11	Grand B1	---	d=9m24s
21:58:54	Vent		3m43s
22:04:20	FP
22:04:35	P1		9m24s	d=0m51s
22:05:26	B2		10m15s	d=0m37s
22:06:03	P2		10m52s
22:06:46	V&T Quit	11m35s

				     ΣB=10m01s	ΣD=10m52s
	* * * * *
21:15:30			
21:33:58	Int: 18m28s	d=4m39s 	
		      Grand: 21m13s

The sky was as clear as I can remember. Even from the cabin area, in an area not directly illuminated by the streetlights, it was possible to see the bright Milky Way arching across the sky.


Posted on

Observations for 2023 August 09


ALmost forgot to go out to Grand. Based on the eruption we saw last night, I knew there was no need to be out there early, so instead decided to enjoy the sunny, fogless morning and go on Geyser Hill and wait for Beehive. As it turned out, Beehive was taking its time, and when the overnight electronic Grand time appeared, I realized I should be there.

Fortunately, I arrived in plenty of time, and didn't have to wait a full Turban eruption interval. The nicely backlit (although a bit steamy) two burst Grand eruption also improved by burst average for the trip. Right now it's better than any year for me since 2012.

2023-Aug-09:08:57:59 G2Q

08:57:53	Boop		-0m05s
08:57:59	Grand B1	---	d=8m56s
08:58:37	Vent Ovfl	0m38s
08:58:51	Turban		0m52s
09:01:24	Vent		3m25s
09:06:55	P1		8m56s	d=0m54s
09:07:50	B2		9m51s	d=0m33s
09:08:24	P2		10m25s
09:09:18	V&T Quit	11m19s

				     ΣB=9m30s	ΣD=10m25s

Back to Geyser Hill, where the waiting continued. A report of an extended fill at North Goggles meant I got to record a North Goggles minor eruption, the first I've seen up close in a while. Over at Beehive, the South Bubbler finally erupted, followed by a long, sixteen minute long Indicator eruption. There was a packed crowd along the railing, and they all got wet. During the Beehive eruption, Depression started its own eruption.

Later went out to Grand with Rift in eruption for at least 2-1/2 hours. Castle started as I was riding my bike out, so watched it a bit to see if it would be a minor eruption. At about six minutes after I first saw the eruption, there were a couple of long pauses, then the activity came back on strong with no more pausing.

Over at Grand there were over two hours of Rift erupting with Turban and Grand not showing any indication of an approaching Grand eruption. When Rift finally quit after about 4-1/2 long eruption, Grand's pool immediately started looking like it was ready to erupt. The One Burst Eruption start was slow, with multiple boils to a couple of meters before the jetting started. At the nine minute mark there was a false pause after some Big Sawmill activity, then Grand continued for another 1-1/2 minutes.

2023-Aug-09:16:43:19 T1C

16:42:51	Vent Ovfl	-0m28s
16:42:56	Turban		-0m23s
16:43:12	Boop		-0m07s
16:43:19	Grand B1	---	d=10m07s
16:45:26	Vent		2m07s
16:52:09	FP		8m50s
16:53:26	P1		10m07s
Vent & Turban continue

				     	ΣD=10m07s
	* * * * *
14:41:09			d=4m40s 	
15:00:11	Int: 19m02s	d=4m26s 	
15:20:35	Int: 20m24s	d=4m09s 	
15:38:54	Int: 18m19s	d=3m40s 	
15:59:52	Int: 20m58s	d=3m51s 	
16:19:02	Int: 19m10s	d=3m55s 	
		     Turban: 23m54s

In the Sawmill Group, Sawmill was erupting the whole time I was waiting for Grand. It finally quit about ten minutes after the Grand eruption. Belgian Pool was nearly full, and Crystal Spring was overflowing into Slurp so much that there was runoff almost to the walkway.


Posted on

Observations for 2023 August 08


No rain for several hours, but it was heavily overcast and the fog seemed to be forming. Walked up to Grand, and had enough time to put down my pack as the eruption started. It was a foggy, One Burst Grand Eruption and so I was able to leave quickly.

2023-Aug-08:06:23:24 G1Q

06:23:24	Grand B1	---	d=10m03s
06:24:19	Turban		0m55s
06:25:33	Vent Ovfl	2m09s
06:27:17	Vent		3m53s
06:33:27	P1		10m03s
06:34:59	V&T Quit	11m35s

				     	ΣD=10m03s

Went over to Geyser Hill to wait for Beehive. Abandoned my wait when the rain started, but it finished by the time I got back to the cabin. It was only a few minutes later when the radio call for the Indicator came out. This eruption was actually nice because few people around and the little breeze we had was away from the walkway.

The rain was only supposed to last an hour or so, but four hours later it was still raining as I went out for the next Grand eruption. I decided to walk via Geyser Hill as I've found riding a bike in the rain is a sure way to get soaked no matter how hard I try to stay dry.

As I came out into the clearing by Liberty Pool, I saw Penta in eruption. It was a steamphase eruption, and I must have seen it near the start as the activity didn't diminish in the time it took me to walk over to it. Sawmill was off, and the pools of Spasmodic were not visible down in the vents. There was horizontal jetting on the south side of Spasmodic also. Oval was also low, and the near vent was surging a half-meter or so.

I think I arrived at Grand for the first Turban eruption after a Turban Delay Interval. The pool started out looking low, and there was little to no overflow before the next Turban eruption. If that was the case, then the One Burst Grand Eruption took place on number five (D5). The rains continued during the wait, despite all the weather reports and radar maps showing we were supposed to be clear. So the eruption was steamy and unimpressive.

2023-Aug-08:13:37:01 G1C

13:37:01	Grand B1	---	d=9m44s
13:37:25	Vent Ovfl	0m24s
13:37:39	Turban		0m38s
13:40:12	Vent		3m11s
13:46:45	P1		9m44s
Vent & Turban continue

				     	ΣD=9m44s
	* * * * *
12:23:42			d=4m34s 	
12:41:45	Int: 18m03s	d=4m20s 	
13:00:31	Int: 18m46s	d=3m43s 	
13:18:14	Int: 17m43s	d=4m01s 	
		      Grand: 18m47s

During the wait there was also a Castle minor eruption. Didn't get the duration because I was not moving from my dry spot from which Castle wasn't visible.

It had been almost two hours since I saw the Penta activity, and Sawmill was still quiet. Was hoping that meant there might be a possibility of Uncertain erupting. Instead, Sawmill started right after we'd walked up to it. The splashing in Uncertain did get stronger, but never close to looking like an eruption was starting. At the same time, Tardy had a series of short bursts, then started gurgling at depth.

Once again, I walked up on an eruption of Tilt while headed out to Grand. And at Grand I believe I caught another Turban Delay Interval eruption, because this Turban eruption lasted over six minutes, and the following Turban interval was short and without overflow.

Four Turban intervals later Grand erupted. The sun was below the horizon and clouds, but there was hints of pink and magenta in the clouds behind the Grand eruption, and more than enough light to see by. The day was never warm, so much of the eruption was obscured by steam. Grand quit at just over nine minutes, and the steam parted enough to see the pool, which was still full. So a several day string of one burst eruptions was finally broken.

2023-Aug-08:20:29:21 G2Q

20:29:21	Grand B1	---	d=9m03s
20:29:32	Vent Ovfl	0m11s
20:29:55	Turban		0m34s
20:32:25	Vent		3m04s
20:38:24	P1		9m03s	d=0m46s
20:39:10	B2		9m49s	d=0m36s
20:39:47	P2		10m26s
20:40:22	V&T Quit	11m01s

				     ΣB=9m39s	ΣD=10m26s
	* * * * *
19:09:07			d=6m06s 	
19:28:35	Int: 19m28s	d=4m37s 	
19:48:26	Int: 19m51s	d=4m26s 	
20:08:56	Int: 20m30s	d=4m37s 	
		      Grand: 20m25s