Not to rain on Mother Nature’s parade, but there are growing indications that the current El Nino that has created an above normal Sierra snowpack for December has peaked or is about to do so. Forecasters in Japan and Australia believe that is the case as water temperatures have shown signs of cooling in the eastern Pacific Ocean.If they are right the wetter precipitation that often comes with an El Nino will start falling off in early 2016. Then there is evidence that El Nino’s weather sibling — La Nina — where waters start cooling off below normal in the eastern Pacific Ocean — is brewing.