High-Level Clouds (5,000 - 13,000 meters or 16,000 - 43,000 feet)
* Cirrus (Ci): Delicate, wispy clouds composed of ice crystals. They often appear as feathery streaks, filaments, or patches.
* Cirrocumulus (Cc): Small, white, puffy clouds arranged in rows. They can resemble fish scales or ripples.
* Cirrostratus (Cs): Thin, sheet-like clouds that often cover the entire sky. They can produce halos around the sun or moon.
Mid-Level Clouds (2,000 - 7,000 meters or 6,500 - 23,000 feet)
* Altostratus (As): Grayish or bluish sheet-like clouds that can obscure the sun or moon. They often have a "watery" appearance.
* Altocumulus (Ac): White or gray patches of rounded, puffy clouds arranged in layers or sheets. They can sometimes have a wave-like appearance.
* Nimbostratus (Ns): Dark gray, rain-producing clouds that can cover the entire sky. They often produce continuous rain or snow.
Low-Level Clouds (Surface - 2,000 meters or 0 - 6,500 feet)
* Stratus (St): Gray, featureless, sheet-like clouds that cover the entire sky. They can produce drizzle or light snow.
* Stratocumulus (Sc): Gray or white patches of rounded, puffy clouds arranged in layers or sheets. They often have a "lumpy" appearance.
* Cumulus (Cu): Puffy, cotton-like clouds with flat bases and rounded tops. They are often associated with fair weather.
* Cumulonimbus (Cb): Thunderstorm clouds. These are towering clouds with anvil-shaped tops. They produce heavy rain, lightning, hail, and strong winds.
Note: These altitudes are approximate and can vary depending on geographical location, time of year, and other factors.
