Category: 2025

With all the longer intervals recently, decided it was time to push back my Grand window, especially for nighttime activity. Went out at around the seven hour mark, just as the moon in a clear sky was rising above the ridge.

Still ended up waiting almost an hour for the One Burst Grand Eruption. There was a several second long False Pause at around the 8-1/2 minute mark, then the first burst continued for almost three more minutes.

2025-Jun-14 : 01:33:26 T1Q

 01:33:13	Turban	-0m13s
 01:33:26	B1	--- d=11m15s
 01:41:52	FP	8m26s
 01:44:41	P1	11m15s
 01:45:40	V&T Quit	12m14s

				     	ΣD=11m15s
	* * * * *
 00:40:13			d=03m53s 	
 00:58:26	Int: 18m13s	d=03m29s 	
 01:14:47	Int: 16m21s	d=03m12s 	
		     Turban: 18m26s

It appeared that Rift erupted overnight, probably before midnight. Unlike yesterday, West Triplet did not eruption during the several hour wait at Grand, and never appeared to show wter in the vent.

Grand itself had a Turban Delay interval at our arrival. We finally got a One Burst Eruption two hours and six Turban eruptions later. The eruption was nicely backlit with what little wind pushing the steam to the north.

2025-Jun-13 : 09:26:11 D6/T1C

 09:25:31	Turban	-0m40s
 09:25:39	Vent Ovfl	-0m32s
 09:26:06	Boop	-0m05s
 09:26:11	B1	--- d=10m06s
 09:28:45	Vent	2m34s
 09:36:17	P1	10m06s
Vent & Turban continue

				     	ΣD=10m06s
	* * * * *
 07:32:35			d=05m10s  D0	
 07:50:58	Int: 18m23s	d=04m28s  D1	
 08:12:15	Int: 21m17s	d=03m54s  D2	
 08:33:57	Int: 21m42s	d=03m50s  D3	
 08:51:58	Int: 18m01s	d=03m23s  D4	
 09:08:20	Int: 16m22s	d=03m35s  D5	
		     Turban: 17m11s

Afterwards went to investigate the progress on the boardwalk between Oblong and Giant. For a week, it seemed like nothing much, about 50 feet of new walkway. At least it looked like the new walkway is solidly built and won't immediately get bouncy like the old walkway.

The dumpster in front of Grotto was gone, replaced by one that gouged the paving material. Will be interested to see if there is any attempt to replair that damage.

Was surprised to see a second crew working on the Fan & Mortar walkway (the Oblong crew is on their weekend), where they were removing the old plastic walkway and replacing it with the newer boards.

Did a quick visit to East Sentinel, where it appears to be back to what I've considered its normal activity, with the murkiness gone.

In the afternoon it was a windy wait for Grand. Once again, I may have arrived during a Turban Eruption Delay. If so, this time it was six Turban eruption intervals before the One Burst Grand Eruption. We also got West Triplet ending just before the Grand eruption.

2025-Jun-13 : 17:31:19 T1Q

 17:30:55	Vent Ovfl	-0m24s
 17:31:05	Turban	-0m14s
 17:31:08	Boop	-0m11s
 17:31:19	B1	--- d=10m22s
 17:34:00	Vent	2m41s
 17:41:41	P1	10m22s
 17:42:54	V&T Quit	11m35s

				     	ΣD=10m22s
	* * * * *
 15:41:38			d=05m25s 	
 15:59:37	Int: 17m59s	d=38s 	
 16:18:37	Int: 19m00s	d=03m41s 	
 16:38:05	Int: 19m28s	d=04m11s 	
 16:56:26	West Triplet d=26m58s 
 16:57:02	Int: 18m57s	d=03m27s 	
 17:14:22	Int: 17m20s	d=03m22s 	
		     Turban: 16m43s

The clouds of the day had cleared out by 22:30, so despite the experience of the morning, no reason to not to head out.

Might have arrived for a Turban Delay interval, because the overflow was strong and the next Turban eruption had no overflow prior.

If that was the case, then we only had a 3 Turban Delay before the One Burst Grand eruption. While the moonlight was clear and bright, I didn't see any moonbows while standing over by West Triplet.

2025-Jun-12 : 00:39:32 T1Q

 00:38:39	Turban	-0m53s
 00:39:32	B1	--- d=09m17s
 00:48:49	P1	9m17s
 01:34:14	V&T Quit	54m42s
Vent & Turban continue

				     	ΣD=09m17s
	* * * * *
Yesterday  23:38:59			d=03m42s 	
Yesterday  23:59:00	Int: 20m01s	d=03m53s 	
 00:17:38	Int: 18m38s	d=03m43s 	
		     Turban: 21m01s

It wasn't until we had left Grand that we realized that Castle was in eruption. Based on the fact that it was transitioning to steam as we walked up to it, the eruption started during Grand's eruption. This time we were able to catch moonbows with a slight hint of color in the spray and mist from the steam.

In the morning, I arrived just in time to catch another Turban Delay interval. West Triplet then erupted in the middle of a series of seven Turban eruptions leading to another One Burst Grand eruption.

2025-Jun-12 : 09:11:57 D7/T1C

 09:11:31	Vent Ovfl	-0m26s
 09:11:38	Turban	-0m19s
 09:11:54	Boop	-0m03s
 09:11:57	B1	--- d=09m01s
 09:14:26	Vent	2m29s
 09:20:58	P1	9m01s
Vent & Turban continue

				     	ΣD=09m01s
	* * * * *
 07:08:10			d=05m06s  D0	
 07:25:15	Int: 17m05s	d=03m58s  D1	
 07:43:14	Int: 17m59s	d=04m18s  D2	
 07:55:53	West Triplet d=30m02s 
 08:02:18	Int: 19m04s	d=03m22s  D3	
 08:19:41	Int: 17m23s	d=03m31s  D4	
 08:37:37	Int: 17m56s	d=03m29s  D5	
 08:55:30	Int: 17m53s	d=03m41s  D6	
		     Turban: 16m08s

During the wait we saw an eruption of Oblong, and unlike most of the others that have been witnessed from there, it had a number of tall burst visible through the steam of the eruption.

With nothing much going in the Upper Basin, decided to try for a mid-afternoon Great Fountain eruption. Arrived at noon to find a low Great Fountain crater.

So took a side trip to check out the road damage at the bridges. It doesn't look good, and I'll be surprised if the road reopens any time soon, because the repairs are more like replace.

The Great Fountain overflow started about 1-1/2 hour later, lasting about 85 minutes. It was windy, so the best observations were from the boardwalk benches. There were some bursts with good height at the beginning, but the first burst sort of gradually turned into the second.

Got back into the Upper Basin where Grand had not erupted and the interval was over seven hours. From the bike rack I saw an eruption of Turban that was so large that at first I thought I was seeing Grand in the late Big Sawmill phase. But no jetting, so I knew that couldn't be it.

A half hour later West Triplet erupted, followed a few minutes later by the One Burst Grand eruption, lasting 9-1/2 minutes. West Triplet ended after that, with no Rift eruption.

2025-Jun-12 : 16:52:06 T1C

 16:51:17	Turban	-0m49s
 16:51:33	Vent Ovfl	-0m33s
 16:51:57	Boop	-0m09s
 16:52:06	B1	--- d=09m33s
 16:54:34	Vent	2m28s
 17:01:39	P1	9m33s
Vent & Turban continue

				     	ΣD=09m33s
	* * * * *
 16:17:19			
 16:34:33	Int: 17m14s	d=03m39s 	
 16:46:57	West Triplet d=32m58s 
		     Turban: 16m44s

By then it was nearly 17 hours since we saw the Castle eruption, so decided to hang around. Over then next 1-1/2 hours the waiting crowd slowly got smaller as Castle was mostly silent with the occasional large splash. Needed time to fix a meal, so finally left around 19:00. Castle had the minor eruption about ten minutes later.