Stationary Type IV bursts are more common and are not associated with CMEs. They are broad-band continuum emissions associated either with solar flares or Type I bursts. Flare-associated Type IV bursts are also called flare continuum bursts, and they typically begin at or shortly after a flare's impulsive phase. Larger flares often include a storm continuum phase that follows after the flare continuum. The storm continuum can last from hours to days and may transition into an ordinary Type I noise storm in long-duration events. Both flare and storm continuum Type IV bursts are attributed to plasma emission, but the storm continuum exhibits much larger degrees of circular polarization for reasons that are not fully known.