Image caption
Animation of maps of sea surface temperatures in the Pacific Ocean compared to the long-term average over five-day periods from the end of October 2023 to early January 2024. The waters in the key monitoring region, which scientists call "the Niño-3.4 region," are consistently warmer than average (red), reflecting the mature El Niño. NOAA Climate.gov, based on Coral Reef Watch maps available from NOAA View.