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Satellites: NOAA-15
and NOAA-17,
part of NOAA's 850km-high (530 mile-high) Polar
Orbiting satellites
Potential (unrealized) storm cell
These two images show an isolated circulation pattern
in the midwest that never quite developed into anything strong.
Note the extremely cold cloud tops as revealed by the thermal image.
Large temperature gradients (differences) can drive such isolated systems
towards dangerous weather.
Click on the image(s) below for a higher-resolution (>100k) version.