Altostratus clouds are mid-level, gray or blue-gray clouds that usually cover the whole sky. If you see altostratus clouds, a storm with continuous rain or snow might be on its way. Occasionally, rain falls from an altostratus cloud. If the rain hits the ground, then the cloud has become a nimbostratus.
What does Alto mean in altostratus?
Latin Term: …………… Derives from alto-, meaning high, and strato- meaning layer. Abbreviation: ………… Altostratus can be abbreviated as As.
Is Stratus low or high?
Stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuliform clouds that are formed by rising thermals.
What does altostratus mean in Latin?
From the Latin altum, which means height, upper air, and cumulus. Altostratus. From the Latin altum and stratus. Nimbostratus. From the Latin nimbus, which means rainy cloud, and stratus.
What are the four types of cloud?
The different types of clouds are cumulus, cirrus, stratus and nimbus.
Do Alto clouds rain?
Mostly found in settled weather, altocumulus clouds are usually composed of droplets, but may also contain ice crystals. Precipitation from these clouds is rare, but even if rain does fall it doesn’t reach the ground.
What does altocumulus mean in English?
Altocumulus (From Latin Altus, “high”, cumulus, “heaped”) is a middle-altitude cloud genus that belongs mainly to the stratocumuliform physical category 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
Do stratus clouds produce rain?
Stratus clouds are uniform and flat, producing a gray layer of cloud cover which may be precipitation-free or may cause periods of light precipitation or drizzle. Thick, dense stratus or stratocumulus clouds producing steady rain or snow often are referred to as nimbostratus clouds.
What do stratus clouds look like?
Stratus cloud often look like thin, white sheets covering the whole sky. Since they are so thin, they seldom produce much rain or snow. Sometimes, in the mountains or hills, these clouds appear to be fog. Cumulonimbus clouds grow on hot days when warm, wet air rises very high into the sky.
How would you spot a stratus cloud?
Stratus clouds are uniform grayish clouds that often cover the sky. Usually no precipitation falls from stratus clouds, but they may drizzle. When a thick fog “lifts,” the resulting clouds are low stratus.
Whats the definition of Stratus?
: a low cloud form extending over a large area at altitudes of usually 2000 to 7000 feet (600 to 2100 meters) — see cloud illustration.
What are clouds named after?
Most of our names for clouds come from Latin and are usually a combination of the following prefixes and suffixes: Stratus/strato: flat/layered and smooth. Cumulus/cumulo: heaped up/puffy, like cauliflower. Cirrus/cirro: high up/wispy.
What are 3 major types of clouds?
While clouds appear in infinite shapes and sizes they fall into some basic forms. From his Essay of the Modifications of Clouds (1803) Luke Howard divided clouds into three categories; cirrus, cumulus and stratus. The Latin word ‘cirro’ means curl of hair.
What is a rain cloud called?
Clouds that produce rain and snow fall into this category. (“Nimbus” comes from the Latin word for “rain.”) Two examples are the nimbostratus or cumulonimbus clouds. These low-level clouds are full of moisture. Cumulonimbus clouds are also called thunderheads. Thunderheads produce rain, thunder, and lightning.
What causes altocumulus clouds?
Altocumulus clouds usually form by convection in an unstable layer aloft, which may result from the gradual lifting of air in advance of a cold front. The presence of altocumulus clouds on a warm and humid summer morning is commonly followed by thunderstorms later in the day.
Are altocumulus clouds?
Altocumulus is a member of the ten fundamental cloud types (or cloud genera). It is a middle-level cloud, thus they usually form between 2 to 7 kilometers (6,500 to 22,000 ft). Altocumulus cloud usually occur as a layer or patch of more or less separate cloudlets in the form of heaps, rolls, billows or pancakes.
How do you pronounce altocumulus?
How many layer of clouds are there?
The types of clouds can be divided into three levels, each in turn with its own main groups of clouds. All in all, there are ten fundamental types of clouds. Often, you’ll some places simply class clouds as cirrus, stratus, and cumulus because these clouds are the most common and representative for each altitude class.
Why do low clouds produce more precipitation?
The high clouds contain less amount of water vapor and the temperature is low. Though middle clouds contain water particles, it is relatively less when compared to that of low and clouds of vertical development. The low clouds contain stratus and nimbostratus. They are primary precipitation producing clouds.
Do cirrostratus clouds produce precipitation?
Though cirrostratus itself does not produce precipitation, it can indicate whether or not precipitation is likely. If cirrostratus nebulosus exists in the sky it is likely that an incoming warm front will bring persistent rain within a day.
Do nimbostratus clouds produce thunderstorms?
Nimbostratus, unlike cumulonimbus, is not associated with thunderstorms, however at an unusually unstable warm front caused as a result of the advancing warm air being hot, humid and unstable, cumulonimbus clouds may be embedded within the usual nimbostratus.
What level are stratus clouds at?
Found at very low levels (less than 2000 meters, or 6500 feet), stratus clouds are thick, large, heavy-looking gray clouds that dominate the sky. Precipitation normally does not occur with this cloud, although drizzle or mist may be observed.
What is the difference between stratus and nimbostratus?
Both nimbostratus and stratus clouds can be found at the same height, are both relatively featureless, and are both the same light gray to dark gray color. The biggest differentiator is that nimbostratus clouds contain rain, whereas stratus clouds only contain rain on the rarest of occasions.
How high up are cumulonimbus clouds?
Cumulonimbus clouds are the kings of all clouds, rising from low altitudes to more than 60,000 feet (20,000 meters) above ground level. They grow due to rising air currents called updrafts, with their tops flattening out into an anvil shape.
Why are stratus clouds important?
Both are typically very thin clouds that can extend horizontally for large distances. Stratocumulus frequently produce light precipitation often in the form of drizzle. Because they strongly reflect solar radiation, stratus and stratocumulus exert an important impact on climate.
Why do clouds float?
FLOATING CLOUDS. The water and ice particles in the clouds we see are simply too small to feel the effects of gravity. As a result, clouds appear to float on air. Clouds are composed primarily of small water droplets and, if it’s cold enough, ice crystals. So the particles continue to float with the surrounding air.
Do Low clouds mean tornado?
A wall cloud is a cloud that is lowered from a thunderstorm, forming when rapidly rising air causes lower pressure below the storm’s main updraft. Wall clouds that rotate are a warning sign of very violent thunderstorms. They can be an indication that a tornado will touch down within minutes or even within an hour.
What do cumulonimbus clouds look like?
Cumulonimbus clouds are large, tall clouds that are dark on the bottom, bring thunderstorms, have a fuzzy outline toward the upper part of the cloud and may have a flat top called an anvil. Besides thunderstorms, these clouds can bring hail, tornadoes and snow, and they also form during hurricanes.