High-altitude (typically 20,000–40,000 ft), wispy, and feathery clouds composed entirely of ice crystals. What type of cloud is this?
Cirrus
Grayish or bluish mid-level cloud sheets, typically appearing in uniform, fibrous, or smooth layers that cover large areas of the sky. What type of cloud is this?
Altostratus
A mobile, destructive vortex of violently rotating winds having the appearance of a funnel-shaped cloud and advancing beneath a large storm system. What is this?
Tornado
What is it called when a cold air mass meets a warm air mass
Front
Detached, low-level clouds with a puffy, cotton-like appearance, characterized by flat bases and rounded, cauliflower-like tops. What type of cloud is this?
Cumulus
Thick, dark-gray, shapeless cloud layers with low bases that produce steady, prolonged precipitation, such as rain, snow, or sleet. What type of cloud is this?
Nimbostratus
A intense tropical cyclone—a rotating, organized system of clouds and thunderstorms—that forms over warm subtropical or tropical waters. What is this?
Hurricane
A complex, mature weather system formed when a fast-moving cold front overtakes a slower warm front, lifting the warm air mass entirely off the ground. What type of front is this?
Occulated front
Dense, towering vertical clouds associated with thunderstorms and severe weather, often forming an anvil-shaped top. What type of cloud is this?
Cumulonimbus
High-altitude (above 20,000 ft), thin, white sheet-like clouds composed of ice crystals that often cover the entire sky like a transparent veil. What type of cloud is this?
Cirrostratus
An overflowing of a large amount of water beyond its normal confines, especially over what is normally dry land. What is this?
Flood
The leading edge of an advancing warmer air mass that replaces a retreating, colder air mass. What type of front is this?
Low-level, grey, and featureless clouds that form in flat, horizontal,, sheet-like layers, often appearing as an overcast blanket or elevated fog below 8,000 feet. What type of cloud is this?
Stratus
High-altitude, thin, white patches or sheets of ice crystals (or supercooled water) that appear as small, rippled, or grainy, non-shaded puffs, often arranged in rows. What type of cloud is this?
Cirrocumulus
A prolonged period of abnormally low rainfall, leading to a shortage of water. What is this?
Drought
The boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system. What type of front is this?
Cold front
Mid-level, white or gray patches or layered clouds composed of water droplets and sometimes ice crystals. What type of cloud is this?
Altocumulus
Low-level, lumpy, and grayish-white clouds that often form in large, patchy rows or sheets, typically at altitudes below 6,500 feet (2,000 meters). What type of cloud is this?
Stratocumulus
A storm with thunder and lightning and typically also heavy rain or hail. What is this?
A weather boundary between a warm and a cold air mass where neither air mass is strong enough to replace the other, causing the front to stall, often for days, leading to prolonged periods of clouds, steady precipitation (rain or snow), and consistent weather conditions. What type of front is this?
Stationary front