Score / Assessment
Coral Bleaching Risk Calculator
For researchers, ngos & environmental professionals. Score, risk band, explanation and actions.
Unit system— all inputs and outputs convert automatically
Inputs
Enter your data — results update live.
Coral thermal stress
2
°C-weeks (DHW)
Bleaching watchBreakdown chart
Visual comparison of each component (°C above threshold).
- Temperature anomaly
- 0.50 °C above threshold
- NOAA alert level
- 0.00
Methodology & sources
Formula
Degree Heating Weeks (DHW) = Σ(SST − MMM+1) per week when >0Sources
- • NOAA Coral Reef Watch