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Altocumulus (Alto, "high", cumulus, "heaped") is a cloud belonging to a class characterized by globular masses or rolls in layers or patches, the individual elements being larger and darker than those of cirrocumulus and smaller than those of stratocumulus. Like other cumulus clouds, altocumulus signifies convection. It is usually white or gray, and often occurs in sheets or patches with wavy, rounded masses or rolls. Altocumulus often are seen preceding a cold front, and their presence on a warm, humid, summer morning frequently signals the development of thunderstorms later in the day. Alto means high and these clouds may cause rain if they are higher up. One form of altocumulus, altocumulus lenticularis (Lenticular cloud) is frequently reported as "Unidentified flying objects".The altocumulus approach can sometimes be frightening, for the cloud has a dark and scary appearance. Altocumulus clouds are found at an altitude of between 2,000 and 6,000 metres and are made up entirely of water droplets. Sometimes they form parallel bands, as here, and sometimes rounded masses. They often form in front of a cold front as unstable air is lifted. this is alto cumulus clouds in a clear mackerel pattern Altocumulus cloud formation A stratocumulus cloud belongs to a class characterized by large dark, rounded masses, usually in groups, lines, or waves, the individual elements being larger than those in altocumuli, and the whole being at a lower altitude, usually below 2,400 m (8,000 ft). Weak convective currents create shallow cloud layers because of drier, stable air above preventing continued vertical development. Vast areas of subtropical and polar oceans are covered with massive sheets of stratocumuli. These may organize in to distinctive patterns which are currently under active study. In subtropics, they cover the edges of the horse latitude climatological highs, and reduce the amount of solar energy absorbed in the ocean. When these drift over land the summer heat or winter cold is reduced. 'Dull weather' is a common expression incorporated with overcast stratocumulus days. If the air over land is moist and hot enough they may develop to various cumulus clouds, or, more commonly, the sheets of thick stratocumuli may have a nimbostratus look on them. The distinction here is the amount of rain produced. On drier areas they quickly dissipate over land, resembling cumulus humilis. Generally, stratocumuli bring only light rain or snow. However, these clouds are often seen at either the front or tail end of worse weather, so may indicate storms to come, in the form of thunderheads or gusty winds. These are same in appearance to altocumuli and are often mistaken for such. A simple test to distinguish these is to compare the size of individual masses or rolls: when pointing your hand in the direction of the cloud, if the cloud is about the size of your thumb, it is altocumulus; if it is the size of your entire hand, it is stratocumulus. Stratocumulus lenticularis clouds in Jackson, WY

Stratocumulus clouds viewed from above the Rocky Mountains

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What type of clouds are low puffy white clouds that can change into cumulonimbus cloud that can change into cumulonimbus cloud?

The low puffy white clouds that can change into cumulonimbus clouds are called cumulus clouds. Cumulus clouds are often associated with fair weather, but can grow into cumulonimbus clouds, which are tall, dense, and produce thunderstorms.


Does the cumulus cloud produce rain?

Cumulus clouds can produce rain if they grow large and tall enough to develop into cumulonimbus clouds, which are known for generating thunderstorms and precipitation. When cumulus clouds reach this stage, they can release rain.


What updrafts of warm moist air result in tall clouds called?

Cumulus clouds is an resault of updraft of warm,moist air in tall clouds.


What are cirrus status and cumulus clouds?

I'm guessing that you meant to type "stratus". Stratus clouds are the lowest forming cloud in the atmosphere (even fog is a type of stratus). They can produce light precipitation. Also those little "pieces" of cloud that you see sometimes are a type of stratus known as stratus fractus. Cumulus form mid-troposphere. And the cumulus family consists of cumulus humilis, mediocris, and congestus. Cumulonimbus are in the cumulus family and consist of such formations as cumulonimbus calvus, cumulonimbus with pileus, cumulonimbus capillitus, and cumulonimbus incus. Cirrus clouds are those "thin and wispy" looking clouds way up in the troposphere. They are the highest cloud formation.


What is a light fluffy cloud with a flat bottom?

"Light, Fluffy clouds" are called cumulus; However, there are different types of cumulus. The smallest formation are called cumulus humilis and they are wider than they are tall. The next biggest formation is called cumulus mediocris and their width and heigth are about the same. Then comes cumulus congestus, they can get pretty big and are usually taller than they are wide. The next stage up is cumulonimbus. They're are many types of cumulonimbus as well. Such as cumulonimbus calvus, cumulonimbus /w/ pileus, and the most mature formation, cumulonimbus incus. (Incus produce the most violet weather.)

Related Questions

Do cumulus clouds form into cumulonimbus clouds?

Yes, cumulus clouds can develop into cumulonimbus clouds through a process called cloud growth. Cumulonimbus clouds are larger and taller versions of cumulus clouds that can bring thunderstorms and severe weather.


Are thunderstorms formed in cumulus clouds?

Thunderstorms are associated with cumulonimbus clouds. However, cumulonimbus clouds do start off as cumulus.


Are cumulonimbus and cumulus the same clouds?

No, cumulonimbus and cumulus clouds are not the same. Cumulus clouds are fluffy and usually indicate fair weather, while cumulonimbus clouds are larger and can develop into thunderstorms, bringing heavy rain, lightning, and strong winds.


What type of clouds are low puffy white clouds that can change into cumulonimbus cloud that can change into cumulonimbus cloud?

The low puffy white clouds that can change into cumulonimbus clouds are called cumulus clouds. Cumulus clouds are often associated with fair weather, but can grow into cumulonimbus clouds, which are tall, dense, and produce thunderstorms.


Are cumulus clouds storms clouds?

No. Cumulus clouds are fair-weather clouds most of the time. Storm clouds are cumulonimbus.


Is cumulus a thunderhead?

No. Cumulonimbus clouds are thunderheads. Cumulus clouds usually indicate fair weather.


Is cumulus short for cumulonimbus?

No. Cumulus clouds are the fairly small, puffy white clouds that usually come with nice weather. Cumulonimbus clouds are enormous towering clouds often called thunderheads as it is these clouds that become thunderstorms.


What type of weather is found on cumulus?

Depends which type of cumulus.... cumulonimbus is thunderstorm clouds, regular cumulus clouds are the white puffy clouds that have no precipitation


Does the cumulus cloud produce rain?

Cumulus clouds can produce rain if they grow large and tall enough to develop into cumulonimbus clouds, which are known for generating thunderstorms and precipitation. When cumulus clouds reach this stage, they can release rain.


What type of clouds are cold front ones?

Cumulonimbus and Cumulus


What are the differences between cumulus clouds and cumulonimbus clouds?

Cumulus clouds are generally fairly small and not very tall. These clouds typically have flat bottoms and billowing tops. They have weak updrafts and often indicate calm weather. Cumulonimbus clouds are large and usually very tall. They have strong updrafts and typically have flat bottoms and flat tops, forming an anvil shape. Cumulonimbus clouds bring thunderstorms.


Does the cumulonimbus belong in a particular group or family of clouds?

Yes. It is in its own family, but it's related to, and develops from, the cumulus. The usual progression is: Cumulus humilis Cumulus mediocris Cumulus congestus Cumulonimbus