No one knew when the dawn Grand eruption happened, so extrapolated from the previous evening's time. Also, someone reported an empty crater, which at least gave a maximum time. Turns out I guessed about right, as when the electronic times finally appeared, it was only about ten minutes from my estimate.
The weather looked wet when we left to go out, but while cold and a bit windy, was never actually raining. Took a quick look at Economic and vicinity, where I noticed that Wave was down a bit, and Economic is actually hot not just around the vent, but has a well defined runoff area in the middle of the orange to the south.
Was one of those Turban starts where Grand waits well over a minute to join in. The burst ended at around 8-1/2 minutes, which should mean another burst, but I have seen a One Burst Grand that short. But the pause was quick, and we got our second. Just that while the total duration was less than ten minutes, Grand made no attempt to even try for a third.
Considered going out to see activity in the Lower Basin again, but timing (Great Fountain erupted as we were eating the meal of the day) and weather (heavy rain) pursuaded us to stay behind. We also missed Beehive, seeing it from our cabin after we heard the roar of the eruption.
Got to see Grand start from behind Castle, because we weren't out there in time for the 5h32m interval. But there was a nice second burst. The rains had also died down, and the breeze was blowing to the east for once, so it was again easy to see the water column.