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Observations for 2021 May 21


Went out at dawn to check the Sawmill Group. Appeared to be unchanged from the evening before. The only changes that have persisted, observed over 45 minutes, were an occasional collapsing bubble in Tardy's vent, and Slurp was quiet. Sawmill was just below overflow, but there was no change in water level. Rift also erupted overnight.

Four hours later, headed to Grand, things still didn't look much different. Slurp was noisy, but Crystal and Belgian were way down (3cm or so). During the One Burst Grand eruption, Sawmill did briefly rise up enough to wet some of the catch basins around the vent, but no overflow.

The One Burst Grand eruption was another one of those that lasted a long time (11m30s here) because the last two or three minutes or so are in Big Sawmill mode, where there are frequent periods of low jetting, and quick pauses followed a sudden rocket to resume the eruption.

After that, the weather got wetter as the day progressed. When it was time to head out to Grand again, it was a steady rain. Based on what Turban did while I was waiting, I would say that I arrived on the first eruption after a Delay interval, and Grand finally erupted on the fourth. It was another One Burst Grand Eruption, one that lasted just under 10 minutes. During the eruption, the rain got heavier, and then turned to snow as I left the area.

During that wait, I checked the Sawmill Group between Turban eruptions and observed the rise in Sawmill's water level and Spasmodic starting to overflow. The group really didn't look much different than from the morning observation. Again, nothing happened in Tardy, although the rain made it harder to tell if there might have been a bubble or two. I didn't wait around after Grand, which I would have done if I hadn't been getting wet for over an hour.