Clouds(type crap)

Stratus

Flat gray uniform blanket, stable air, drizzle only

Stratocumulus

Lumpy patchy low gray/white layer, most common cloud on Earth, rarely produces rain

Nimbostratus

Thick dark featureless sheet, no defined base, continuous steady rain or snow

Altocumulus

Rows of white/gray puffy patches at middle level

Altocumulus Castellanus

Turret-shaped altocumulus, precursor to afternoon thunderstorms

Altostratus

Gray/blue uniform sheet, sun looks through frosted glass, no shadow on ground

Cirrus

Thin wispy white streaks, all ice crystals, fair weather

Cirrocumulus

Tiny white rippled puffs in rows, all ice crystals, rare

Cirrostratus

Thin white veil, halo around sun or moon, signals storm in 24-48 hrs

Cumulus

Bright white flat base cauliflower top, fair weather when small

Cumulus Congestus

Tall growing cumulus, unstable air, heavy showers possible

Cumulonimbus

Dark base towers to tropopause 12-14km, anvil top, thunder lightning hail

Mammatus

Pouch-like bulges beneath Cb, sinking cold air, storm indicator

Lenticular

Smooth lens-shaped, forms over mountains, stationary despite wind

Rotor Cloud

Violent turbulent cloud below lenticular, aircraft hazard

Pileus

Smooth cap over growing Cb, strong vertical motion, aircraft hazard

Kelvin-Helmholtz

Wave-shaped cloud, indicates wind shear between air layers

Contrails

Man-made ice clouds from jet exhaust at high altitude