NOTICE !!!

NOAA Coral Reef Watch will discontinue all operational twice-weekly 50km satellite coral bleaching heat stress monitoring products in April 2020.

These products are being replaced with higher resolution daily 5km satellite products.
(https://coralreefwatch.noaa.gov/product/5km)

Archived 50km data and images will still be available at https://coralreefwatch.noaa.gov. If you need any assistance, please contact coralreefwatch@noaa.gov.

 

50km Sea Surface Temperature Anomaly
clickable global map of SST anomalies
anomalies in Mediterranean and Red Sea anomalies around India anomalies east of Japan anomalies around Hawaii anomalies around Central America anomalies West of Africa anomalies in Mediterranean and Red Sea anomalies around southern Africa anomalies in the southern Indian Ocean anomalies around Australia anomalies in the South Pacific anomalies west of South America anomalies east of Brazil anomalies around southern Africa
Click on the image to zoom in.

Current images: Global | E.Hem. | W.Hem. | Pacific | Caribbean | Coral Triangle


Data Formats Available

images Image Archives
Regional imagery and image archives from NOAA/NESDIS' Office of Satellite and Product Operations (OSPO).
Google Earth Google Earth
All of our satellite data products are available on Google Earth.
Virtual Stations 50km Virtual Stations
Imagery, graphs, ASCII data, and e-mail alerts for reef pixels around the world.
animations Animations
Data animations and downloadable animated GIF files from NOAA/NESDIS OSPO.


The NOAA Coral Reef Watch (CRW) twice-weekly global 50km Sea Surface Temperature (SST) Anomaly product displays the difference between today's SST and the long-term average. The scale goes from -5 to +5 °C. Positive numbers mean the temperature is warmer than average; negative means cooler than average.


Additional description in the 50km products tutorial.
Technical details on the methodology page and in Liu et al. 2013.