It rained overnight, so not going out for the middle of the night Grand eruption was the proper decision. Woke up around the 14 hour mark, so a good time to see what was going on. It was still heavy overcast, and rain seemed likely. As it turned out, I got there in time for a Turban Delay interval. Rumor has it that the NPS recorded an eruption time of around 02:00, so that meant it was the early Delay interval.
For the third Turban interval later, there was again heavy overflow that looked like it was leading up to a Turban Delay. The expected rain never materialized, it was mostly clear and warming. Grand had an explosive start, nicely backlit by the sun. The total duration of the two burst eruption was just over ten minutes, and Vent & Turban quit suddenly, as if the eruption had been a lot longer. It was hard to tell, because the runoff was wet by the rains, but it appears West Triplet never came close to overflowing.
2024-Aug-26:08:37:32 D3/D0/G2Q 08:37:32 B1 --- d=08m49s 08:38:20 Turban 0m48s 08:40:40 Vent 3m08s 08:46:22 P1 8m49s d=39s 08:47:02 B2 9m29s d=31s 08:47:34 P2 10m01s 08:48:20 V&T Quit 10m47s 08:58:23 V&T Restart 20m50s ΣB=09m21s ΣD=10m01s * * * * * 07:33:48 d=05m30s D0 07:52:10 Int: 18m22s d=04m21s D1 08:11:13 Int: 19m03s d=04m24s D2 Grand: 26m19s
Spent some time in the Sawmill Group field testing an update to my iPhone app. Not much happened during that time.
Sawmill Test_2024-Aug-26_1041 --------------- 2024-Aug-26 10:41 In eruption Sawmill 10:47:55 >>>Eruption : d=03m49s Tardy 11:14:07 >>>Eruption : d=02m38s Tardy 11:16:45 End eruption Tardy 11:17:04 End eruption Sawmill 11:23:13 Splashing Bulger 11:33:28 >>>Eruption : min Bulger 11:49:48 End Observations Other Event
Later it was again time for Grand. Castle erupted just before I left the cabin, and was going into a nice steam phase by the time I got out there. The wait for the One Burst Grand was short, as was the eruption itself.
2024-Aug-26:15:02:43 D0/T1C 15:01:50 Turban -0m53s 15:02:43 B1 --- d=08m43s 15:04:27 Vent Ovfl 1m44s 15:05:22 Vent 2m39s 15:11:26 P1 8m43s Vent & Turban continue ΣD=08m43s * * * * * 14:35:17 d=04m12s Turban: 26m33s
After sunset it was cold and a bit windy. Arrived at Grand at the six hour mark with the expectation that the string of short intervals wouldn't last. The interval for the next One Burst Grand eruption was just over eight hours, and the duration was under ten minutes.
2024-Aug-26:23:03:15 G1C 23:03:15 B1 --- d=09m44s 23:12:59 P1 9m44s Vent & Turban continue ΣD=09m44s * * * * * 21:15:23 d=04m12s 21:34:11 Int: 18m48s d=03m21s 21:50:25 Int: 16m14s d=03m38s 22:08:26 Int: 18m01s d=04m01s 22:28:04 Int: 19m38s d=03m45s 22:45:46 Int: 17m42s d=03m36s Grand: 17m29s