Swarms

Swarm Pokémon are Pokémon you can obtain when interacting with the NPC in Pewter City.

About Swarm Pokémon
Swarm Pokémon have a chance of 1/5 to find.

To find out the location of the swarm, interact with the NPC and he will tell you that "A swarm of ___ has showed up in ___" This will tell which Pokémon it is as well as the location of where it is.

This swarm changes every 10 Minutes.