Reporting
I'm not sure that all El Nino
I'm not sure that all El Nino events are similar both in strength ( http://www.pmel.noaa.gov/tao/elnino/faq.html#same ) and their predominate weather effects( http://www.cpc.ncep.noaa.gov/products/precip/CWlink/ENSO/composites/elnino.son.precip.gif ). As the CPC gif shows in the hyperlink above, for autumn in Southern Oregon/Northern California, one landscape can be dry whereas an adjacent landscape can be wet. Of course, these gifs are derived from historical data and thus are a statistical description.