During some types of natural hazards, satellites are capable of capturing remarkably clear imagery of affected areas. Below, before an after Landsat visible-infrared images of the Wallow fire in eastern Arizona, USA. The images cover 300 square miles (500 sq km) – about half the area hit by the uncontained fire up to June 7, 2011.
Green indicates healthy forest and grassland; Red, burnt areas; bright pink, ongoing fires.
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