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Observations for 2024 June 02


Since Grand erupted during Rift's eruption last night, the expected long interval for Grand took place overnight. The first three observed Turban eruption durations were short, around three minutes long. Then we got a long Turban interval, but it wasn't long enough to qualify as a Turban Delay Interval. That Turban duration was a minute longer, as was the next eruption.

Grand finally erupted less than 16 minutes later. When the first burst ended at less than 8-1/2 minutes long, we were pretty sure of a second burst. Backlit by the sun with much of the steam cleared away, it seemed impressively high. And it lasted just over 1/2 a minute, which is short. Despite that, the pool quickly drained and there was no effort at a third burst, and a total duration of about 9m36.

2024-Jun-02:08:13:57 T2C

 08:13:50	Vent Ovfl	-0m07s
 08:13:52	Turban	-0m05s
 08:13:57	B1	--- d=08m17s
 08:16:34	Vent	2m36s
 08:22:15	P1	8m17s d=39s
 08:22:54	B2	8m56s d=32s
 08:23:26	P2	9m28s
Vent & Turban continue

				     ΣB=08m49s	ΣD=09m28s
	* * * * *
 06:43:55			d=03m10s 	
 07:01:14	Int: 17m19s	d=03m09s 	
 07:17:39	Int: 16m25s	d=03m00s 	
 07:40:49	Int: 23m10s	d=04m13s 	
 07:57:59	Int: 17m10s	d=03m50s 
		     Turban: 15m52s

Afterwards, in the Sawmill Group Uncertain was splashing. All the conditions looked good for an eruption. Waited a bit, and then suddenly Sawmill started. Despite that, Uncertain continued to splash, and a few minutes later it built into an eruption. This eruption seemed shorter than those I've seen in the past, but that may be due to erupting with Sawmill.

Later went out for the noon radio call for Beehive's Indicator.

In the early afternoon, went out to Grand a bit early, as not sure if the longer intervals due to Rift would still be in effect. Not a super long interval, but still longer than the day prior to Rift erupting. Had to sit through several small showers that were just enough to wet things down.

The first burst from Grand was long enough for a One Burst Eruption, but we were rewarded with a second burst. The pause was less than a half minute, and it looked like Grand's pool was down quite a bit when the bursting restarted. Usually I expect to see sloshing around for a while as the pool rises to near overflow. The second burst then lasted almost long enough to qualify as a Long Second burst, while the Vent & Turban restart took well over twenty minutes.

2024-Jun-02:15:52:49 G2Q

 15:52:49	B1	--- d=09m38s
 15:53:42	Turban	0m53s
 15:56:17	Vent	3m28s
 16:02:27	P1	9m38s d=28s
 16:02:55	B2	10m06s d=01m07s
 16:04:02	P2	11m13s
 16:04:43	V&T Quit	11m54s
 16:26:47	V&T Restart	33m58s

				     ΣB=10m45s	ΣD=11m13s
	* * * * *
 14:14:43			d=02m56s 	
 14:34:05	Int: 19m22s	d=04m11s 	
 14:54:32	Int: 20m27s	d=03m55s 	
 15:12:26	Int: 17m54s	d=04m00s 	
 15:32:02	Int: 19m36s	d=03m22s 	
		      Grand: 20m47s

Since it was clear, and tomorrow is supposed to be cool and wet, we went out after sunset for another Grand eruption. The wait was uneventful. The One Burst Grand eruption had a false pause after a minute or so of Big Sawmill mode, then continued on for almost three more minutes.

2024-Jun-02:23:36:44 G1Q

 23:36:44	B1	--- d=12m02s
 23:37:40	Turban	0m56s
 23:40:26	Vent	3m42s
 23:46:01	FP	9m17s
 23:48:46	P1	12m02s
 23:49:35	V&T Quit	12m51s

				     	ΣD=12m02s
	* * * * *
 22:05:05			d=03m57s 	
 22:24:12	Int: 19m07s	d=03m47s 	
 22:40:43	Int: 16m31s	d=03m41s 	
 22:59:21	Int: 18m38s	d=03m44s 	
 23:17:46	Int: 18m25s	d=04m09s 	
		      Grand: 18m58s