This website is the digital version of the 2014 National Climate Assessment, produced in collaboration with the U.S. Global Change Research Program. For the official version, please refer to the PDF in the downloads section.
Lahars move rapidly down valleys like rivers of concrete. If you are on the floor of a valley that leads from a volcano and become aware of an oncoming lahar, seek high ground. Lahar is an Indonesian term that describes a hot or cold mixture of water and rock fragments that flows down the slopes of a volcano and typically enters a river valley.
A cheetah can attain speeds up to 76 miles per hour but can only sustain them for over a distance of approximately 1,500 feet. Cheetahs can accelerate at an amazing rate, going from a standstill position to as fast as 68 mph in less than three seconds. cheetah can attain speeds up to 76 miles per hour but can only sustain them for over a distance of approximately 1,500 feet. Cheetahs can accelerate at an amazing rate, going from a standstill position to as fast as 68 mph in less than three seconds.