Woke up at dawn with no reports for any geyser activity. It being 7-1/2 hours, decided to find out for certain if Grand had erupted, and if it hadn't, figure on a short interval.
Arrived just as Turban started to erupt. No Grand eruption and the pool was full. The following Turban eruption interval was just over 15 minutes. Such a short Turban interval late in the Grand interval implied that Grand would erupt at the end of this Turban interval.
And it did. Once again the steam was pushed aside enough to be able to see the start of Grand and Vent clearly. For the last two minutes or so of the eruption Grand went into Big Sawmill mode. With the fog and steam it was hard to tell when the first burst quit. And at 9m42s, it was long enough for a One Burst Eruption. But after nearly a minute, the start of the second burst could be heard through the fog.
2025-May-26 : 06:11:46 T2Q 06:11:30 Turban -0m16s 06:11:46 B1 --- d=09m42s 06:14:25 Vent 2m39s 06:21:28 P1 9m42s d=52s 06:22:20 B2 10m34s d=48s 06:23:08 P2 11m22s 06:23:52 V&T Quit 12m06s ΣB=10m30s ΣD=11m22s * * * * * 05:37:22 d=03m04s 05:53:02 Int: 15m40s d=03m19s Turban: 18m28s
West Triplet started to erupt at some point near the end of the Grand eruption, with many splashes but not much thumping.
Decided to spend some time on Geyser Hill as Beehive could be due soon. Didn't have to wait long. Didn't see any rainbows because I decided to not risk getting wet at that end of the walkway, although it only misted down there.
Afterwards, went over to wait on Aurum. Spent an hour trying to record an eruption start without success. (It erupted about 20 minutes after I left.)
Went out for the next Grand eruption a bit early because it was time for Uncertain. Didn't have long to wait.
From there, headed over to Grand where I probably saw a Turban eruption that concluded a Turban Delay Interval. If that was the case, then we then got to experience a four Turban interval delay. The first burst of the Grand eruption lasted only 7-1/2 minutes. I remarked that we were about to see either a two-star, a three or a four burst eruption. We got the two-star, and the second burst lasted almost 2-1/2 minutes.
Following the eruption, West Triplet again had a heavy overflow with some splashing, but no thumping.
2025-May-26 : 13:10:29 G2*Q 13:10:29 B1 --- d=07m33s 13:10:33 Vent Ovfl 0m04s 13:11:08 Turban 0m39s 13:13:33 Vent 3m04s 13:18:02 P1 7m33s d=16s 13:18:18 B2 7m49s d=02m24s 13:20:42 P2 10m13s 13:21:43 V&T Quit 11m14s ΣB=09m57s ΣD=10m13s * * * * * 11:53:36 d=05m39s 12:12:29 Int: 18m53s d=04m16s 12:31:45 Int: 19m16s d=04m09s 12:51:17 Int: 19m32s d=03m38s Grand: 19m12s
Then waited for Castle, because the interval since last night's eruption was well over 17 hours. It ended up over 18 hours, and we got a minor eruption that lasted just under four minutes.
Arrived at Grand for the evening eruption a bit early, and probably saw the end of the Turban Delay Interval, since the Turban eruption lasted nearly six minutes, and the following Turban eruption was not preceeded by any overflow from Grand.
About an hour later, West Triplet began to erupt. As this was the first true eruption I'd seen, I wasn't surprised that Rift started shortly afterwards. At the same time, Castle started to erupt, the followup to the afternoon's minor eruption.
Until West Triplet quit erupting, Percolator was also in eruption. That was the first activity I've seen from it in at least a couple of years.
It took three Turban eruption intervals after the start of Rift before Grand erupted. This One Burst Eruption lasted exactly eleven minutes, but there was about three minutes of Big Sawmill at the end.
2025-May-26 : 21:41:02 T1Q 21:40:26 Turban -0m36s 21:40:58 Boop -0m04s 21:41:02 B1 --- d=11m00s 21:43:30 Vent 2m28s 21:52:02 P1 11m00s 21:53:00 V&T Quit 11m58s ΣD=11m00s * * * * * 19:16:18 d=05m44s 19:34:15 Int: 17m57s d=04m14s 19:52:53 Int: 18m38s d=03m42s 20:10:12 Int: 17m19s d=04m26s 20:29:02 Int: 18m50s d=03m54s 20:45:58 Int: 16m56s d=03m59s 21:04:40 Int: 18m42s d=03m24s 21:22:46 Int: 18m06s d=03m52s Turban: 17m40s
Rift was still in eruption when I left, so I expect the next Grand interval to be long.