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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.