SOS Encounter: Mount Lanakila (15%)
Walk: Mount Lanakila (30%, Only in Ultra Sun & Ultra Moon)
Its base catch rate is 75 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Dive Ball, Moon Ball or Net Ball.
Evolution: Snorunt → Glalie (Level 42) · Froslass.
Glalie in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)