As announced by the NOAA Climate Prediction Center, La Niña conditions were observed during October, with negative sea surface temperature (SST) anomalies in early November stretching across most of the eastern and central equatorial Pacific Ocean. These colder than normal temperatures can be seen in this image as areas of blue rippling across the equator. La Niña is likely to affect temperature and precipitation across the United States during the winter. Seasonal outlooks generally favor above-average temperatures and below-median precipitation across the southern tier of the United States, and below-average temperatures and above-median precipitation in the northern tier of the United States. The next seasonal update will be released on November 17th. Current and historical satellite sea surface temperature anomaly data can be seen in NOAA View here.