>With the start of the new month, I would normally be posting the preliminary OI.v2 Global and NINO3.4 SST anomalies for July today. Unfortunately, the NOAA NOMADS system hasn’t presented the preliminary July values as they normally do by mid-morning on the Monday that’s one week before the official values are released. The weekly values have been updated, so I’ll provide a quick update of those. I thought it might be interesting to compare this La Niña so far to other significant events.
The weekly global SST anomalies (centered on Wednesdays through July 28, 2010) are continuing their wiggly decline and have reached +0.21 deg C.
Weekly Global SST Anomalies
Weekly NINO3.4 SST anomalies are well into La Niña ranges, and are at -1.31 deg C.
Weekly NINO3.4 SST Anomalies
The rate at which the NINO3.4 SST anomalies have been dropping is not out of the ordinary…yet. In the next graph, NINO3.4 SST anomalies for 2010 are compared to 1988, 1998, and 2007, years of significant La Niña events.
La Niña Evolution For Four Events
Weekly Reynolds OI.v2 SST anomaly data is available through the NOAA NOMADS website: