Interesting you say that as he was pounding his chest a bit on X. Don't know the guy, and he does deserve credit for being correct, but low-end is an easy default position.
If you always underforecast:
1. Big snows are rare so you will frequently be correct
2. People are generally not upset if the storm overproduces, but the snow hounds are very upset if it underproduces
3. If you say 2-4" and it winds up 5" hardly anyone notices and it is only 25% above your high-end. A pleasant surprise, essentially, if you like snow, and a little bit more to clean up if you don't. If it ends up 1" it is 50% lower than your low-end. As a percentage game, it is way easier to win.