On the morning of June 10th, there was an annular eclipse of the sun. The forecast was excellent the day before, but later in the evening, it called for 30% cloud coverage between 4 and 6 am. At sunrise the eclipse had already begun, and from my location I was unable to see the ring of fire. As it was taking place, several astronomers and I were sending data to Gianluca Masi who was broadcasting the event live through the Virtual Telescope Project.
As you can see, clouds were a problem.