its an outbreak of pokeemon from other regions
A mass outbreak in Pokemon Black and White is when a certain species of Pokemon becomes available temporarily that would not normally be there. Most of these are for the older Pokemon, and only after the National Pokedex is received.
rare Pokemon
Shellos cannot be found in Pokemon Black or White. You can only obtain Shellos through PokeTransfer or the Pokemon Dream World.
The 'mass outbreak' is a swarm of Pokemon that you would not normally find anywhere else, and are at extremely high frequency rates. You can listen to Professor Oak's talk show for what the mass outbreak of Pokemon is and on what route it is on.
mass outbreak
Mass OUTBREAK
A "Mass Outbreak" is when many Pokemon show up in a area where they usually not found. Every day go to Dawn's House in Sandgem Town and talk to her little sister, she will tell you what Pokemon and what route for the mass outbreak! Hope This Helps!
outbreak
mass outbreaks are according to day, not time. So there is a different mass outbreak every day.
A "Mass Outbreak" is when many Pokemon show up in a area where they usually not found. Every day go to Dawn's House in Sandgem Town and talk to her little sister, she will tell you what Pokemon and what route for the mass outbreak!
mass outbreak
outbreak