Posted: 11/07/2008 - La Nina is gradually returning. The Multivariate ENSO Index (MEI) has dropped to -0.74 in October, well into weak La Nina territory. The tropical Pacific sea surface temperatures all the way from South America to beyond the dateline are back below normal. The North Pacific as a whole remains strongly in the cold mode (negative PDO). The Atlantic is weakly in its warm mode (Atlantic Multidecadal Oscillation is positive). The sun recently showing slight signs of life is still at solar minimum levels. The winds in the stratosphere over the tropical Pacific are blowing anomalously westerly) in their Quasi Biennial Oscillation. All these conditions point to another cold winter in all but the southeastern United States.