Storm chasing tours hold out the promise of seeing some of the most violent weather dished up in America's heartland. Here, tourists with Cloud 9 tours (guide and veteran storm chaser Charles Edwards is third from left, pointing upwards) observe and discuss the features of an immature storm that is rapidly gathering strength. Tourists typically spend about $2,000 and endure long miles riding over the dusty and often desolate plains to see dramatic, severe storms.