Observations for 19 July 2013


I didn't expect to see the morning Grand in the dark, and I didn't. But I was disappointed that it only had one burst. The light was just hitting the ridge to the northwest, and it would have nicely illuminated the top of a second burst, if there had been one.

The last couple of days there have been reports of more activity at East Sentinel, including some large eruptions. So I decided to check the area out. There was definitely evidence of at least one large eruption, with dead grass as much as 10 meters from the vent. The areas upstream was also cleaned of any debris, which is typical when something erupts infrequently. While there, I saw the pool in the crater cycle in height by about a foot, and several of the holes upstream splashed water to about that same height. The area bears further watching.

The mid-day Grand actually had a shorter interval, and two bursts.

While waiting for Grand in the evening, saw another eruption of Bush Geyser,out on the flat to the northwest. This time I noticed a second small sput active just north of the larger activity. This was about a couple of inches high, and continued on for at least another hour before it became too dark to see out there. I might even have seen a third vent active out there, but not sure.

The evening Grand was like the previous two evenings, but this time Grand erupted on the Turban right after sunset.

This was also the first day all week where there were no announcements of the same Fan & Mortar event cycle during the day. Would be nice if this signals a shift down there.