Hi-- I can assure you that our forecasts are better than random guessing or equal chances.  Check out Tom's post here and related ones.  Just because one region of the country did not verify in the favored forecast category, does not mean the entire forecast was useless everywhere.  Plus, as noted in several places on the blog, we do not provide 100% guarantees.  We issue probabilistic predictions which assign a percent chance of a certain outcome.  In climate prediction, we know the uncertainty is larger so we explicitly factor that into the forecasts.  I could understand your frustration if we said "California is going to be entirely dry because of La Nina" but that was not our forecast.