Observations for 2026 May 22


Turns out coming back in last night was a good idea. Grand erupted well after midnight with an interval of over eleven hours, with a Rift eruption during that time.

I didn't know that when I went out in the morning. Grand was in overflow, and Turban started shortly after I arrived. The duration was fairly short. Castle started a major eruption at the same time.

Grand had a One Burst Eruption with the next Turban eruption, with West Triplet starting near the end. I decided to stick around to get the duration, and make sure Rift didn't erupt. Turns out Rift did erupt, giving it an interval of less than 10 hours.

2026-May-22 : 08:09:30 T1Q

 08:09:12	Turban	-0m18s
 08:09:27	Vent Ovfl	-0m03s
 08:09:30	B1	--- d=11m18s
 08:12:32	Vent	3m02s
 08:20:48	P1	11m18s
 08:21:29	V&T Quit	11m59s
 08:42:38	V&T Restart	33m08s

				     	ΣD=11m18s
	* * * * *
 07:50:40			d=03m24s 	
 08:22:07ns	West Triplet
 08:55:24	Rift
		     Turban: 18m32s

Returned to the cabin, then decided to walk out via Geyser Hill to wait for Uncertain. I figured that there was a good chance that Beehive might be active in the next few hours. That way once the wait in the Sawmill Group was over, I could hang around on Geyser Hill for a while.

The wait for Uncertain wasn't long. Sawmill started shortly after I arrived, and that's when Uncertain started to splash heavily. Within ten minutes, it erupted, and both it and Sawmill ended their eruptions at the same time.

As usual, it was windy on Geyser Hill, and waited for about 45 minutes. Made the mistake of not waiting next to Aurum, as it erupted during that time.

Went back to the cabin for lunch, figuring I'd be out in the wind all afternoon at Grand, and could run out, as usual, for Beehive. Turns out no one called out the Indicator, and I only noticed the entry for the Indicator eight minutes after it started.

With three of the last four Grand intervals near six hours (the fourth was near twelve) I had to go out at the six hour mark. Over the next 2-1/2 hours, saw a mostly undistinguished series of Turban eruptions. The intervals slowly dropped from well over twenty minutes to less than eighteen. Then we got a Turban Delay interval.

Fortunately, Grand was able to erupt during that Delay, and it even had two bursts. The pool drained after the second burst, and there was never water visible after that.

2026-May-22 : 16:32:27 D0/G2C

 16:32:23	Boop	-0m04s
 16:32:27	B1	--- d=08m21s
 16:32:34	Vent Ovfl	0m07s
 16:32:47	Turban	0m20s
 16:35:13	Vent	2m46s
 16:40:48	P1	8m21s d=23s
 16:41:11	B2	8m44s d=01m01s
 16:42:12	P2	9m45s
Vent & Turban continue

				     ΣB=09m22s	ΣD=09m45s
	* * * * *
 14:10:10			d=03m57s 	
 14:30:50	Int: 20m40s	d=04m13s 	
 14:50:30	Int: 19m40s	d=03m30s 	
 15:09:22	Int: 18m52s	d=03m38s 	
 15:28:00	Int: 18m38s	d=03m26s 	
 15:46:05	Int: 18m05s	d=03m14s 	
 16:03:48	Int: 17m43s	d=03m30s 	
 16:32:01	West Triplet	d=37m00s
		      Grand: 28m39s

During the eruption, down by the Grand sign, there was a ground of people taking selfies. In turn, each one would step off the boardwalk and strike a stupid pose, as if they had accomplished something dramatic.

Near the start of Grand's eruption, West Triplet started. I stuck around to catch the end, just in case Rift had an even shorter interval. But while the West Triplet eruption seemed a bit long, it didn't trigger Rift.

As I was leaving, Bulger had its second observed major eruption of the day.