sustained -PNA with -NAO.. Big trough in the west is forcing a strong ridge in the central and eastern US. -NAO in summer actually means heat, instead of cold like it does in the winter. Any cold shots are going to be brief before HHH returns.
Seven day SST change in the North Atlantic is showing minor warming of the waters, just off the east coast, due to the previous warm up last week. Another, stronger warm-up starting today will likely cause a return of warmer than normal anomalies replacing the cold blob. Most of the coldest anomalies are farther north in Newfoundland and south of Greenland.