Went out early for Grand based on a double interval. Didn't find out until later that the first interval was particularly long, and we'd arrived not much after first overflow. No delays, but the One Burst Eruption had an interval of about 6-1/2 hours.
The mid-day Grand was similar. A Delay Turban was followed by three Turban intervals before we finally got the One Burst Eruption. This one also lasted just under ten minutes.
After Grand, decided to go to Artemisia to kill some time. Walked up, dropped my pack and started to get out the water bottle when I felt the first thumps. Unfortunately, the wind was pretty strong, and shifting, so there wasn't any place to stand where one didn't get the full force of the steamy fog. And it was hot.
Returning from there, glanced at Fan & Mortar, and they looked dead. By the time we got to Castle, there was a radio call about splashing in the Main Vent. Went back, and there was some huge splashes, as wide as the vent and well above the highest part of the rim. Unlike yesterday, Bottom Vent didn't dominate, but even so, the Fan vents started out nice but by the time Angle Vent started, it was obvious that there wasn't much of a chance for an eruption.
After the Fan & Mortar event, noticed that there was a large smoke plume to the south among the general haze. Turns out there's a small fire near Lone Star. The NPS closed the trail and evacuated the campsites by helicopter. We had intended to go out that way tomorrow, looks like that is off.
Went out for a Grand in the dark, and had the place to myself. Interval was just under six hours, and no signs of any sort of delay. Best of all, Grand quit at just over eight minutes, and followed up with a nice illuminated second burst. Total duration was only 9-1/2 minutes, so could've had a third if it had tried.