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