Sometimes you just can’t keep up. In November 2014 when we had our ‘Snovember’ you just couldn’t keep up with snow that falls at rates of 4 or 5” per hour. Woke up on Day 1 of the storm with 30”. Cleaned out the driveway on Day 2, only to get 30 more inches on Day 3. 70 inches of snow in four days for me, other areas got hit harder. It made for a pretty dangerous few days in my corner of the world. Not too far from me some poor guy died when he got trapped in is his car because he chose to pull over and was either asphyxiated to death or froze to death and no one even knew for a few days because his car was completely buried. Total of 8 or 9 people lost their lives because of the storm.
Last year on this site, when I brought it up I was called lazy for not clearing off my dishes. When I had other things to worry about, like cleaning out my driveway and not having a heart attack from overexertion. People generally have no clue how dangerous these situations can be. These high amounts of snow are no joke. Being inconvenienced by loss of a TV signal or power shouldn’t even matter. If I’m lazy for not setting my alarm to go off every few hours in the middle of the night and not trudging through snow that came up to my neck just to clear off a satellite dish, then so be it.
Point is, if the snow is heavy enough and falls at a rapid rate, there’s not much you can do. Mine are mounted on the back of my single story house. Where I have the X is where my old Dish Network dishes were located. They were completely mangled and hanging off the roof. You can see my two DirecTV dishes peeking out from the snow at the end of the house. Although you can't really tell, they essentially collapsed. The arms and LNBs were just about flush with the slope of the roof and the masts were bent. If I remember right, the dishes got snowed in the Wednesday of the storm, and a DirecTV tech wasn’t able to get out here until the following Saturday. To even suggest it was possible to clean them off with a broom or water gun is laughable.
Stay safe, it's only TV.