Infrared Light Reveals Tornado's Path
On
May 20, 2013, central Oklahoma was devastated by a EF-5 tornado, the
most severe on the enhanced Fujita scale. The Newcastle-Moore tornado
killed at least 24 people, injured 377, and affected nearly 33,000 in
some way. Early estimates suggest that more then $2 billion in damage
was done to public and private property; at least 13,000 structures were
destroyed or damaged. It was the deadliest tornado in the United States
since an EF-5 event killed 158 people in Joplin, Missouri, in 2011.
On June 2, 2013, the Advanced Spaceborne Thermal Emission and
Reflection Radiometer (ASTER) on NASA’s Terra satellite observed the
scar of that tornado on the Oklahoma landscape. In this false-color
image, infrared, red, and green wavelengths of light have been combined
to better distinguish between water, vegetation, bare ground, and human
developments. Water is blue. Buildings and paved surfaces are blue-gray.
Vegetation is red. The tornado track appears as a beige stripe running
west to east across this image; the color reveals the lack of vegetation
in the wake of the storm.
According to the National Weather
Service, the tornado was on the ground for 39 minutes, ripping across 17
miles (27 kilometers) from 4.4 miles west of Newcastle to 4.8 miles
east of Moore, Oklahoma. At its peak, the funnel cloud was 1.3 miles
(2.1 kilometers) wide and wind speeds reached 210 miles (340 km) per
hour.
Image Credit: NASA Earth Observatory
NASA
Guillermo Gonzalo Sánchez Achutegui
ayabaca@gmail.com
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