From the Summit County Citizens Voice (Bob Berwyn):
National Weather Service forecasters are pinpointing the potential effects of strengthening La Niña conditions this winter, predicting a dry winter on Colorado’s eastern plains and in the southern part of the state, but above-average snowfall for the northwestern quadrant of Colorado. The forecasters said there is still some disagreement about whether this year’s La Niña will be a strong event, but they said that the strong cooling of sea surface temperatures in the eastern Pacific and a positive feedback loop of the ocean and atmosphere are tilting the odds in favor of a moderate to strong La Niña.
Mr. Berwyn is linking to the National Weather Service powerpoint.