This prolonged La Nina has fooled me enough with short-term sea surface temperature variations, so I am not prepared to conclude that it has bottomed out. It seemed to have bottomed out several times before coming back down to levels near what we saw at the peak last fall. Some forecast models suggest that we should be near the lowest point, and some suggest we will get a little cooler by late fall. So, I don't expect Nino 3.4 sea surface temperatures to get much cooler than what they are now, but I cannot say that we have bottomed out yet.