Not exactly "local" but there is a new Rockabilly Festival coming up to our north. From http://rivercityrumble.ca/:
River City Rumble (RCR) is a rockabilly weekender event in Winnipeg, taking place for the first time on August 3 & 4, 2013. The Festival will be held at the Metropolitan Entertainment Centre (CanAd Inns), a prominent new downtown venue. RCR is a not-for-profit, board-run organization focused on promoting local, national and international rockabilly bands, burlesque, car shows, retailers, and entertainment. RCR prides itself on being community oriented and operates on funding via community events and generous sponsorship.
So go get your tickets and get ready to head on north come August. Bands include: Kim Lenz & The Jaguars, Stray Cat Lee Rocker, The Matadors, The Farrell Bros and more. Go to http://rivercityrumble.ca/ for full details and tickets