We have developed a method for Objective Analysis of SST in the Gulf of Maine region. The results are smooth daily maps of SST from either the 9km or 4km NOAA SST data products.  RMS error for 1996 and 1997, 9km gridded data are shown here. The process is assumed to be stationary once a mean seasonal cycle is removed. This assumption is clearly violated in the gulf stream region. We can examine the time series at each point. Three examples are marked on the figure, in the shelf break, Georges Bank, and the Gulf of Maine.