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Observations for 2026 June 05


Turns out Grand erupted only an hour after we left, so needed to get back out a bit earlier than I'd expected. Still ended up waiting two hours of ordinary Turban eruption intervals. During that time Castle had a short, minor eruption, the Grand filled and erupted without a Turban Delay Interval. The One Burst Eruption lasted less than ten minutes, and showed no signs of trying for a second burst. West Triplet started in the middle of the Grand eruption, but I didn't stick around to get a duration.

2026-Jun-05 : 09:07:43 T1C

 09:06:58	Vent Ovfl	-0m45s
 09:06:59	Turban	-0m44s
 09:07:35	Boop	-0m08s
 09:07:43	B1	--- d=09m47s
 09:10:21	Vent	2m38s
 09:17:30	P1	9m47s
Vent & Turban continue

				     	ΣD=09m47s
	* * * * *
 06:55:08			d=04m46s 	
 07:13:02	Int: 17m54s	d=04m18s 	
 07:31:47	Int: 18m45s	d=03m52s 	
 07:52:05	Int: 20m18s	d=04m03s 	
 08:10:45	Int: 18m40s	d=03m56s 	
 08:30:50	Int: 20m05s	d=03m47s 	
 08:49:23	Int: 18m33s	d=02m54s 	
 09:14:43	West Triplet
		     Turban: 17m36s

In the afternoon, Uncertain was in eruption as I tied up my bike near Castle. West Triplet started to erupt before I saw the first Turban eruption for this wait, so I figured it might be a while before the Grand eruption. Turned out to be less than an hour and a half, and the end of that consisted of a Turban Delay Interval lasting over 30 minutes. This time the One Burst Eruption lasted well over eleven minutes, with the last four in Big Sawmill mode, acting like it was about to stop, but never quit succeeding.

2026-Jun-05 : 16:23:56 D0/T1Q

 16:23:26	Turban	-0m30s
 16:23:38	Vent Ovfl	-0m18s
 16:23:53	Boop	-0m03s
 16:23:56	B1	--- d=11m20s
 16:26:24	Vent	2m28s
 16:35:16	P1	11m20s
 16:35:59	V&T Quit	12m03s

				     	ΣD=11m20s
	* * * * *
 14:52:36			d=02m10s 	
 15:04:25	West Triplet d=37m23s 
 15:11:49	Int: 19m13s	d=03m12s 	
 15:30:58	Int: 19m09s	d=04m16s 	
 15:51:03	Int: 20m05s	d=03m41s 	
		     Turban: 32m23s

Afterward I stopped in down basin to catch a windy and short Daisy eruption, then watch a lot of grumbling from Grotto, but no eruption.

After dinner, Beehive's Indicator was called on the radio. It being late evening, with the sun low and still windy, there was a full arc double rainbow visible from the western side. At one point I had to deploy the umbrella, and almost got a full circle rainbow.

According to the NPS radio traffic, around sunset there was a bear hanging around near Castle. A hazing round was deployed to move it back into the trees.

Got out to Grand early. After about five minutes, got a Turban eruption that lasted over five minutes. The next Turban eruption had no overflow preceding it, so I assumed that there had been a Turban Delay interval and I was in for a long wait.

Instead, Grand was heavily overflowing and there was indications that I was about to get another Delay Interval when Grand explosively started erupting. Turban took nearly a minute to start, and this was another case where Vent took nearly four minutes. The One Burst Eruption lasted just long enough to ensure there wasn't a second burst.

2026-Jun-05 : 22:54:22 G1C

 22:54:22	B1	--- d=09m15s
 22:55:18	Turban	0m56s
 22:58:14	Vent	3m52s
 23:03:37	P1	9m15s
Vent & Turban continue

				     	ΣD=09m15s
	* * * * *
 22:14:13			d=05m06s 	
 22:32:19	Int: 18m06s	d=04m29s 	
		      Grand: 22m03s