A10. 6,500 to 23,000 feet.
A11. Variety identifies the specific appearance of the arrangement of elements within a
cloud layer, the thickness of the layer, or the presence of multiple layers.
NAVMETOCCOMINST 3141.2, Surface METAR Observations User's Manual,
and NAVMETOCCOMINST 3144.1, United States Navy Manual for Ships
Surface Weather Observations.
Fahrenheit, Celsius, and Kelvin.
15° of longitude.
Coordinated Universal Time.
Cumuliform, stratiform, cirriform.
Mechanical lift associated with physical barriers forcing air aloft, convective lift
associated with surface heating, convergence resulting from a "piling"of air, and
vorticity associated with the rotational motion of molecules in the air and the
spinning of the earth.
The amount of moisture near the surface.
If the height of the cumulus congestus cloud appears to be twice the width of the
base, it should be classified as towering cumulus.
An anvil top.
Low-level wind shear and microbursts.
The right rear quadrant with respect to CB movement.
When precipitation begins or when bases drop to less than 6,500 feet.
Approaching frontal systems with conditions favorable for thunderstorm activity.
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