At about 6:45 PST, I set up my 80mm Vixen in the parking lot outside Foothill College Observatory (Los Altos, CA) and waited for sucker holes in the clouds. I decided not to set up anything larger, due to the poor seeing and the threat of rain. There were a few holes -- seeing was poor, but it was still easy to make out one shadow (this must have been Callisto's) on on the planet's surface.

For the next hour, the three observers present took a look whenever a hole opened up, through my 80mm or the 6" refractor inside the dome, and spent the rest of the time chatting. By around 7:25, there was another obvious shadow on the planet -- presumably Ganymede's, since Io's shadow wasn't scheduled to appear until 7:35. Both of the shadows I saw were in the SEB.

The air calmed down a little. Inside the dome, using a binoviewer and a little over 100x on the 6" refractor, we could see an unusual pale spot in the NEB -- perhaps Io?

Then clouds covered Jupiter again, and the drumming of raindrops on the dome interrupted our socializing as we rushed downstairs to rescue the 80mm.

Alas, the rain and thick overcast continued late into the night, and we never did get to see the third shadow.

Still, two shadows plus (perhaps) Io's disk isn't a bad night, especially during the rainy season.