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Observations for 2022 July 10


Got out to Grand just before midnight. Riding past the lift station on the bikes we could feel the temperature suddenly drop. Daisy was erupting as we started the walk down from Castle. Over in the Sawmill Group, it appeared that nothing much had appened since the evening. Based on the twenty minute wait we had before Turban finally erupted, and the copious overflow in the middle of the interval, we got there just in time for the Turban delay interval.

Sawmill had a brief two minute eruption during our wait, but for the next five Turban intervals, the durations of Turban eruption slows decreased from five minutes to well under four. Daisy had an interval well under two hours, and then Grand finally erupted. A long one burst eruption at the last possible time. If it had waited one more Turvan interval, the moon would have set.

Slept in a little bit longer on the assumption that the next interval wouldn't be excessively short. Which turned out to be the case. Grand took its time after a Turban Delay interval that happened while we were still
back in the cabin. The eruption had a nice build up to a Turban start, but it was another One Burst Grand. Afterwards, West Triplet had a strong overflow with a couple of splashes to qualify as an eruption.

Check on Fan & Mortar, where Angle mode continues. Went on to East Sentinel for a quick check. Arrived to see some activity along the north rim, along with heavy overflow. That activity increased for a while to include superheated boilin over the near part of the pool and splashing along the entire rim. Then the activity died down and the overflow stopped for a couple of minutes. Then activity resumed as before, with some minor cycling in the amount of boiling. Only spent about 15 minutes there.

Of course the call for Beehive's Indicator came over the radio just as we'd finished the preparation of lunch and started to eat. Quite windy, but still a nice tall eruption under excellent conditions. Afterwards there was a preplay from Old Faithful that lasted for at least 30 seconds and was huge. It took it almost a half hour to recover from that. In the cabin we heard the cheering when it finally erupted.

The wait for the next One Burst Grand eruption was only an hour this time. As earlier, it started with Turban. One thing I noticed is that the start of Vent still took over three minutes from the Grand start, when it should have been much shorter. Castle started shortly after Grand, and it was a major eruption.

It was fairly windy by now, but decided to check out he Daisy Group. As it turned out, the Daisy interval was still only two hours. The duration was short at 3m16s. After the eruption Splendid did show some nice boiling from both Side Boiler and the Main Vent, but there is no evidence of any increase in discharge from the pool.

Went out to Grand just before midnight with the expectation of another long wait. Stopped at Belgian Pool when I noticed that the water level was pushing into the side lobe. That's when I heard Turban erupting, and within seconds, so was Grand.

It was nicely lit by the moon, and there were hints of moonbows, but the eruption lasted, at most, 8m40s, which was quite disappointing. But almost immediately after we figured out that the eruption was over, I noticed the steam building up down basin. Just after midnight, and Oblong had just started. So we headed down that way to get a closer look. I got as far as Chromatic, but by then the eruption was being illuminated.

(While we were at Oblong, and it was lit up, someone drove down basin and then turned around and drove back. I assume it was NPS looking for someone or something else, because they didn't stop.)