The umbrella fell over when I was at my neighbors, there was no wind, it is on an upper deck.  I was in shock when I looked up and seen it hanging over the rail. Knocked over a flower pot that was sitting on the table. I filled the base all the way with water. I am trying to figure out how it could fall over, with no wind. Had a storm this am with high winds and rain and it did good, but I had moved it next to the house, it is folded down and tied.