Convective Weather. Thunderstorms Lightning Tornadoes… …and more. Today. Thunderstorms Journal returns and comments (important) Other comments (also important) New Homework. We’ve done convection. So now: How thunderstorms form Simple isolated storms More organized storms
If conditions are favorable (conditional or absolute instability),
cumulus clouds can grow both vertically and laterally.
Initially: Free Convection
The sun warms the ground
which warms a parcel of air
above the surface.
As the afternoon wears on, the surface is continued to be
heated by the sun. Convective bubbles (parcels) continue to
rise from the surface of the earth. These convective parcels
(thermals) bring more moisture from the surface allowing the
Cumulus clouds to grow.
Three Stages of Air Mass Thunderstorms