Niwa Seasonal Forecaste - LA NINA

good name for it I think "anticyclonic gloom"

 

Background

Following the La Niña event over July 2010 to April 2011, the tropical Pacific returned to neutral conditions. However, over the past 4-6 weeks there is mounting evidence of a transition back to La Niña conditions. The Southern Oscillation Index has become more positive, sea surface temperature anomalies have become increasingly negative in the east-central equatorial Pacific, and the easterly trade winds have intensified near the Date Line. There has been a major shift in the consensus from global climate models which predict El Niño-Southern Oscillation conditions. The majority of these models are now forecasting further development of La Niña patterns over spring and a continuation through the summer of 2011/12. At this early stage, we cannot be confident about the intensity of the event.

BOP Wave

awesome

Another La Nina - Oh Great!

Well doesnt look good - just read Niwa's forecasting another La Nina for the summer.  Might take up fishing .

http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10755932
also;-

http://www.sunlive.co.nz/news/16954-another-la-nina-summer-likely.html


"A warmer and drier end of spring and start of summer was expected for most of the country due to the La Nina weather system, according to Niwa's seasonal climate outlook."