They may be a harbinger of heavy showers and thunderstorms and, if surface-based convection can connect to the mid-cumulonimbus clouds.
32.
Cloud nine is the cumulonimbus cloud that is often seen building up in the sky on a hot summer afternoon.
33.
As the warm, moist air moves upward, it cools, condenses, and forms a cumulonimbus cloud that can reach heights of over.
34.
Moreover, the Andes mountains are very close to the coast, a geographic factor that prevents cumulus or cumulonimbus clouds from appearing.
35.
They agree that somehow, positive and negative electric charges are segregated within and around dark, mountainous, rain-whipped cumulonimbus clouds-- thunderstorm clouds.
36.
The simultaneous presence of both an updraft and a downdraft marks the mature stage of the storm and produces cumulonimbus clouds.
37.
A cumulonimbus cloud is tall, deep and dark and can bring lightning, heavy rain and even hail, damaging winds and tornadoes.
38.
A thunderstorm is the only production mechanism for hail, balls of ice that form in the turbulent motions in a cumulonimbus cloud.
39.
The current hypothesis is that sunlight is reflecting off or refracting through tiny ice crystals above the crown of a cumulonimbus cloud.
40.
In transit, Siberian air was rapidly warmed and moistened over the Bering Sea, setting the stage for billowy cumulonimbus clouds to form.
