Two top U.S. hurricane forecasters, revered like rock stars in Deep South hurricane country, are quitting the practice because it doesn't work.

William Gray and Phil Klotzbach say a look back shows their past 20 years of forecasts had no value.

The two scientists from Colorado State University will still discuss different probabilities as hurricane seasons approach - a much more cautious approach. But the shift signals how far humans are, even with supercomputers, from truly knowing what our weather will do next.