#147 Unova / #641 National
Species classification: Cyclone Pokemon
Ability: Prankster – Non-damaging moves get higher priority
Dream World ability: Defiant – User's Attack stat raises two stages for every stat lowered by an opponent (including Attack)
Location found (Black): Roaming Unova (once you receive all eight badges and talk to the old woman at the healing house on Route 7)
Location found (White): Trade with Black
Wild hold items: None
Egg groups: Cannot breed
Capture rate: 3
Gender ratio: Male only
Experience at lvl 100: 1,250,000
Base stats: 79 HP / 115 Atk / 70 Def / 125 SAtk / 80 SDef / 110 Spd / 580 Total
Effort values: 3 Attack
Evolution family: None
Roaming legendaries are always a bit of a bother to catch, but as the only pure Flying-type Pokemon in existence,Tornadus is worth the effort. Diamond and Pearl had two roamers,MespritandCresselia, so we're lucky that Black and White only have one each. Tornadus is exclusive to Pokemon Black, and you can go after him once you have all eight gym badges.
As you pass through the gate between Opelucid City and Route 10 after receiving your final badge, the woman manning the info desk stops you to tell you about a storm brewing on Route 7 - that's your cue that Tornadus is available for capture.
Fly backto Mistralton City andhead north onto Route 7. Whoa! That lady wasn't kidding when she said it was storming. The effects are really cool here – take a moment to soak it up. When you're ready, head to the house east of Dragonspiral Tower (the healing house) and the old woman will come out to talk to you as you approach. She'll invite you in and tell you about the legendary, and when you leave the house, it will appear and then fly away.
The easiest way to encounter Tornadus is to find a spot where you can go back and forth between the border of one route and the next area, and continue going back and forth until you enter the route and it's storming. The spot between Route 6 and Chargestone Cave is a good one, for example.
Before you start though, make sure the Pokemon leading your party either knows the move Mean Look (WatchogandCofagrigusboth learn this via level up) or has the ability Shadow Tag, otherwise chances are your target will flee before you can catch it. Roaming Pokemon are always a good candidate for using your Master Ball, too.