Models Even Stronger with Upcoming El Nino

Models Even Stronger with Upcoming El Nino

 

The just released IRI/CPC mid-June ENSO Prediction Plume forecasts an even from stronger El Niño event than the previous two months.  And this forecast is important in that it is past the Spring Predictability Barrier. Here is a comparison of the last three dynamic model plume forecasts.

 

The current mean of the 17 dynamic forecast models is 1.8 in the October-November-December period, but in looking at the individual members that make up the mean, there are seven of the models that exceed 2.0, including the Japanese model (2.7), NASA (2.5) and both NOAA and ECMWF at 2.4. 



And now the usual caveat that El Niño does NOT guarantee any particular meteorological outcome, for example above normal rainfall in California.  However, the stronger the El Niño event (i.e. ONI) the higher the probability of above normal rain in California and other impacts in the United States and other parts of the world.  See El Niño / La Niña Winter Historic Precipitation & Temperatures and Climatology of El Niño Events and California Precipitation.


Jan Null, CCM
Golden Gate Weather Services
http://ggweather.com