I must have had quite abnormal circumstances when I had Dish and DirecTV (Dish about 5 years ago and DirecTV 4 years ago until 2 years ago). Everytime it rained (a good, soaking rain or more) I would get a ton of "hiccups" in the signal. The harder it rained, the longer each hiccup was, which occasionally lasted an hour or more during a good rainstorm. It didn't happen all of the time, and the picture was generally very clean, but those nights are the ones that stick out.