NOAA CORAL REEF WATCH · DAILY 5 KM
Where is the ocean surface warmer or cooler than the anomaly reference?
See where sea-surface temperature is running warmer or cooler in the latest available NOAA Coral Reef Watch daily 5 km SST anomaly product across representative U.S. Coast Desks.
Loading NOAA CoastWatch SST anomaly
Sampling the representative CoastEventRadar anchor set from the latest daily satellite grid.
Environmental context, not a beach grade.SST anomaly does not predict swimming safety, harmful algal blooms, wildlife presence or storm impacts.
WHY THIS IS DIFFERENT
Water temperature answers “how warm?” Anomaly answers “how unusual?”
NDBC buoy temperature is a sensor observation at one offshore station. NOAA Coral Reef Watch SST anomaly is a satellite-derived surface-temperature field. Showing both layers separately makes the coast context richer without pretending they are interchangeable.
Use it with other layers
Open a Coast Desk for live buoy temperature, waves, observed-vs-predicted water level, NWS alerts and upcoming tide windows. The anomaly layer is one more piece of context — not a new Coast Pulse safety input.
Compare live buoy temperatures →