Daily 5-km Satellite Coral Bleaching Heat Stress Degree Heating Week Product
(New Version 3, released on 4 May 2017, experimental product)
Global Coral Bleaching Heat Stress Degree Heating Week image
Current Daily Variables:  DHW 
Regional Images:  45ns | Global | East | West | Pac. | Ind. | S.Atl. | Coral Triangle [big] | Caribbean [big] | Florida | Hawaii | GBR
Animations (30d):  45ns | Global | East | West | Pac. | Ind. | S.Atl. | Coral Triangle [big] | Caribbean [big] | Florida | Hawaii | GBR
Animations (90d):  45ns | Global | East | West | Pac. | Ind. | S.Atl. | Coral Triangle [big] | Caribbean [big] | Florida | Hawaii | GBR
Year-to-date Maximum: -----
Year-to-date Minimum: ----- ----- ----- -----
Year-to-date Mean: ----- ----- ----- -----

Click on map to zoom to small-size 60 x 40-degree tiles; use drop-down menu below to view larger-size 60 x 40-degree tiles.     
Right-click outside clickable map area to save the image.     


Large 60 x 40-degree tiles (by hemisphere, updated daily):  



The NOAA Coral Reef Watch (CRW) daily 5-km satellite coral bleaching Degree Heating Week (DHW) product presented here shows accumulated heat stress, which can lead to coral bleaching and death. The scale goes from 0 to 20 °C-weeks. The DHW product accumulates the instantaneous bleaching heat stress (measured by Coral Bleaching HotSpots) during the most-recent 12-week period. It is directly related to the timing and intensity of coral bleaching. Significant coral bleaching usually occurs when DHW values reach 4 °C-weeks. By the time DHW values reach 8 °C-weeks, widespread bleaching is likely and significant mortality can be expected.

This product is updated each afternoon at about 13:30 U.S. Eastern Time.

Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart Regional chart