Check Serebii.net, it will tell you all the outbreak Pokemon.
(I would tell you myself, but you didn't specify a game)
go to the little girl in the house in sandgem town and she will report outbreaks of pokemon. swinub come in outbreaks occionally.you can find swinub in route 217
You just catch the pokemon in the pokemon outbreaks and try to fill up your national pokedex.Or...you can do whatever you want.;D
Answer:From watching the Tvs. Not actual TV's, the TVs in the game.
Lucas or Dawn's sister ( depending on if you play as the male or female protagonist ) will tell you where Pokemon outbreaks are taking place and the Pokemon that you can catch there. I believe there is a show on the tv that will tell you that as well.
mass outbreaks are according to day, not time. So there is a different mass outbreak every day.
After you get the National Pokedex. Check Professor Oaks Pokemon Talk on the Pokegear to get the latest scoop on where these outbreaks occur.
swarm pkmn that you cant see normally they reset at midnight which means the is a different one each day
Chikungunya outbreaks happened in 2007.
if you turn you pokegear onto the music setting and listen to prof. oak and Mary's talk show, they will mention breaking news about certain Pokemon mass outbreaks... the Pokemon that have a mass outbreak will be different every day but there is a chance to have an outbreak of ralts
if you wait for the mass outbreaks or if you put honey on a honey tree you might eventualy get a munchlax if you have beat the game in victory road there is a tunnel on the very right side it goes out side there are pokemon in there that only appear there and they are rare in other games
Sometimes mass outbreaks occur and you should talk to Dawn's sister and she will probebly say so and so are loacated at rout 232 or something sometimes it is Pokemon from hoen, and kanto (fire red).
Outbreaks on college campuses have occurred among immunized or incorrectly immunized students.