Woo. So Pokevision is a bit shite, every time I see a pokemon on tracking and check that website, nothing shows up. Tried it just now with a Lapras, nothing, anywhere in town, scanned a few places including where I was stood.
Loaded the Pokenotify app, it scanned, told me there was a Lapras and it was around 115 metres away, 2-3 streets over, so I went and caught it, with a power up it's around 1390 CP