No reports of any geyser activity during the night, so I headed out to Grand at dawn. There was frost on all the cars in the Lodge cabin area, and the frost was starting to form on the boardwalks by Rift and Grand.
West Triplet was in overflow. Grand was also nicely in overflow, so I knew that it had been at least 4-1/2 hours since the previous eruption. Turban didn't erupt for another 19 minutes, a good indication that I had just witnessed a Turban Delay interval.
It took three more Turban eruption intervals before we got a second delay. This one was just over 25 minutes. It was cold, so the view was steamy, but there wasn't much rain on the northern end of the boardwalk, so I could see Turban and Vent from there.
The first burst lasted exactly 9-1/2 minutes, which is more than long enough, but after almost a minute, we got a nicely backlighted second burst. One that lasted for nearly 2-1/2 minutes. Vent & Turban quit with 15 second of the end of the eruption.
2025-May-25 : 07:19:03 D0/G2*Q 07:19:03 B1 --- d=09m30s 07:19:25 Turban 0m21s 07:22:16 Vent 3m12s 07:28:34 P1 9m30s d=58s 07:29:31 B2 10m28s d=02m25s 07:31:56 P2 12m53s 07:32:13 V&T Quit 13m09s ΣB=11m56s ΣD=12m53s * * * * * 06:15:20 d=05m13s 06:33:47 Int: 18m27s d=04m33s 06:53:56 Int: 20m09s d=04m27s Grand: 25m06s
Since Castle wasn't acting like it had had a minor before I arrived this morning, and it was almost 18 hours since the previous eruption, and it was a nice clear and calm morning, decided to wait for the eruption. Waited well over an hour. The eruption was nicely backlighted also, while it lasted. The minor eruption lasted 2m36s, with only one preliminary pause before the end. There was very little splashing for the next few minutes, indicating that there wasn't going to be any sort of restart.
While cooking some breakfast this morning, we were stalked by a raven looking for an easy meal. It sat on the peak of the cabin roof, clucking and squawking at us, looking for an opportunity to drop down. It finally gave up only after I put the folding table back inside the truck.
For the mid-day Grand the wait was only about an hour. Nothing out of the ordinary about the One Burst Grand eruption until just before the ten minute mark. Then there was a long false pause whose restart got cheers from the crowd who didn't know better. The eruption lasted another minute, followed by a quick restart from Vent & Turban.
2025-May-25 : 14:17:16 G1Q 14:17:16 B1 --- d=10m50s 14:17:38 Vent Ovfl 0m22s 14:17:52 Turban 0m36s 14:20:40 Vent 3m24s 14:27:01 FP 9m45s 14:28:06 P1 10m50s 14:29:10 V&T Quit 11m54s 14:38:55 V&T Restart 21m39s ΣD=10m50s * * * * * 12:58:02 d=03m37s 13:15:26 Int: 17m24s d=04m11s 13:35:21 Int: 19m55s d=04m28s 13:55:48 Int: 20m27s d=04m30s Grand: 21m28s
Shortly after West Triplet, which had been in overflow, had a few burst about a meter high. The overflow continued for another couple of minutes. The Belgian Pool water level was up to the rim again.
In the afternoon decided to visit Geyser Hill just before the call for the Indicator came over the radio. There was little wind, so no one got wet on the walkways. After, tried to walk around the rest of Geyser Hill, but was blocked over between Aurum and Pump by a couple of bison grazing just close enough to the walkway.
Castle finally recovered from this morning's minor eruption as I was heading out for the evening Grand eruption. The Sawmill Group was high, with Churn in overflow and Sawmill nearly so. West Triplet had just finished another period of overflow. Caught an eruption of Turban and was going to see if Sawmill was still close to overflow when it started to erupt.
The next Turban eruption interval was a Delay Interval. At around 26 minutes Grand had a series of boops, some as high as two meters. It took another five minutes before Grand's pool finally subsided and Turban erupted.
It was a three Turban Interval delay. It was still light enough to see and the wind from the north pushing the steam to the right helped. The first burst lasted just over ten minutes. There was a pause of nearly a minute and then a nice tall second burst that spiked repeatedly above the steam clouds below it.
2025-May-25 : 21:46:34 D3/G2Q Yesterday 21:46:34 B1 --- d=10m02s Yesterday 21:47:24 Turban 0m50s Yesterday 21:50:04 Vent 3m30s Yesterday 21:56:36 P1 10m02s d=55s Yesterday 21:57:31 B2 10m57s d=01m01s Yesterday 21:58:32 P2 11m58s Yesterday 21:59:23 V&T Quit 12m49s ΣB=11m03s ΣD=11m58s * * * * * Yesterday 20:17:05 d=04m45s Yesterday 20:50:24 Int: 33m19s d=04m49s D0 Boop: 20:43:23 Yesterday 21:06:37 Int: 16m13s d=05m01s D1 Yesterday 21:26:05 Int: 19m28s d=04m17s D2 Grand: 20m29s