17SEP1997 28.9C 2.2C
16SEP2015 29.0C 2.3C
For a brief moment in mid-September 2015 the weekly SST anomalies in the 3.4 region actually exceeded the value of the record 1997 season. 1997 had a slight lead most weeks of late August and early September, so 2015 currently lags behind 1997 in the 3 month averages and the ONI. The next several weeks will be quite interesting to see if this year can continue to warm at the 1997 rate.
Watch for more unusual weather events as the anomalies warm.