Where can i find accurate and up to date information on severe storms and super cells in the midwest?

I am an amatuer storm chaser, with my only mobile resource being my anDroid. Are there any good sites or apps anyone knows of that I can use to see pressure fronts and actual watches and warnings in real time? Weatherbug does not do it for me, only let's me see a rough estimate of where a storm is at, and is not exact as to the severity of these storms.