The middle region includes altostratus, altocumulus, and
nimbostratus clouds, which are between 6,000 and 20,000 feet.
However, after crossing the Ohio River into West Virginia, the pilot saw a dark area of precipitation looming ahead, and began entering layers of altostratus and
nimbostratus clouds.
Satellite imagery at 1745 indicated a layer of low to mid-level stratocumulus to
nimbostratus clouds, with cloud tops near 20,000 feet.
It's like being armed with a weapon that ensures not only your protection from the elements but also makes
nimbostratus clouds beat a hasty retreat.
NIMBOSTRATUS CLOUDS - These are dark grey or bluish grey featureless layers of clouds, thick enough to block out the sun.