Observations for 2019 September 15


Was mostly a day of One Burst Grand eruptions. The first one took its time, and we may have walked up on a Delay Turban interval, based on the long Turban eruption duration,

Stopped by down at Grotto to catch a start. Grotto Fountain went about 3-5 meters high, and preceeded Grotto by about two minutes, so nothing out of the ordinary there. At Giant, nothing happened much there either, other than for a moment I thought I was actually seeing a Bijou pause.

While waiting in the early afternoon, we were treated to having an eagle flying low over the river, then perching on a dead tree. After a while, it took off and slowly circled its way higher and off to the north.

The eruption itself was preceeded by an eruption of Sput D, which did not erupt during the previous Turban eruption interval. I've been seeing a number of cases like this, where Sput D acts almost like a sort of indicator or pressure guage to the system. Also, the new normal seems to be that West Triplet overflows heavily for several minutes after Grand erupts.

The last Grand eruption of the day was the had two bursts, with the second lasting well over two minutes. Fortunately, much of the eruption was through a hole in the high, thin cloudiness .