Observations for 2021 September 10


Got out at dawn to find Fan & Mortar didn't erupt overnight. But over the next few hours, I ended up going back and forth between there and Castle because it insisted on looking good enough. Watched Turban and Sawmill start from the bike racks, just in case needed to run back north. When I did head over to Grand, I saw the One Burst Eruption start from Sawmill (and would have recorded it if I had hit the right buttons).

Also did a spot check of East Sentinel, and it looked unchanged.

A windy day, so went up to Daisy at a four-and-a-half hour double interval, and still needed to wait a half-hour. Otherwise everything there seemed normal, with Daisy lasting 3-1/2 minutes.

Mid-day wait for Grand had West Triplet start before Grand. We did get a second burst, one lasting over two minutes

After that, part of afternoon was spent at East Sentinel, where it still looked unchanged from the last few days.

Fan & Mortar didn't do anything after the morning's events until it was time to head to Grand, when it had a weak event. I watched a couple of Turban eruptions from the bikerack again, just in case it picked up, but it didn't.

Over at Grand, both Percolator and Sput D were active. West Triplet was not near overflow. This has been a sign of Rift in the past. After about an hour, West Triplet finally did start, but it was a short duration eruption and Rift stayed quiet.

Grand itself was getting into that weird mode where it had a Turban eruption interval of less than 16 minutes, and where the overflow starts much earlier than usual. Fortunately, there had been no delay, so the interval for the One Burst Grand eruption was about 7-1/4 hours. It was a twelve minute long duration, which helped drain the batteries of several lights.