Is there a risk for strong tornadoes tomorrow April 3rd 2014?

Yes. The storm prediction center has specifically mentioned the threat of tornadoes and anticipates that the threat will increase as the front shifts. Given the large area placed under a moderate risk (though this may be due to the hail threat), there is likely some potential for strong tornadoes. More information will become available when the first Day 1 outlook for April 3 is issued at around midnight central time.