Summons hailstorm when switched in.
Snow Warning is an ability that summons hail weather conditions when the Pokémon enters battle. Hail lasts for 5 turns (or 8 turns if the Pokémon holds an Icy Rock). During hail, all non-Ice-type Pokémon take damage at the end of each turn, and certain Ice-type moves may have enhanced effects. It is the Ice version of Drought and Drizzle.
| #273 | Articuno | Secondary | Unknown | |
| #210 | Glaceon | Secondary | Unknown | |
| #135 | Ninetales(alolan) | Hidden | Unknown | |
| #134 | Vulpix(alolan) | Hidden | Unknown |