Clouds

Clouds and Precipitation online meteorology guide Graphic by: Yiqi Shao ...

**Clouds** If the cooling continues, the clouds will become denser, and if the temperature is above freezing, (32 degs. F.), rain may occur. If the temperature is below 32 degs. F., snow or sleet, and in extreme cases, hail may occur.

Low-level clouds (St, Sc, Ns) Stratus, Stratocumulus, and in some degree, Nimbostratus are low clouds.

Pages in category "Clouds, fog and precipitation" There are 5 pages in this section of this category. D ...

Clouds of unknown composition that have a soft, pearly luster and that form at altitudes about 25 to 30 km above the Earth's surface. They are also called "mother-of-the-pearl clouds." Nadir ...

Clouds - A visible collection of tiny water droplets or, at colder temperatures, ice crystals floating in the air above the surface. Clouds come in many different sizes and shapes.

Clouds in patches, sheets or layers, which show undulations like waves. Comes from the Latin for 'waved'. Upbank Thaw: ...

Clouds cloud formation: cloud-condensation nuclei, cloud droplets For condensation to occur at the dew point water vapor needs a surface to condense on.

Clouds with a woolly, heaped appearance that often produce rain. Cyclogenesis The rapid development of a low or intensification of a pre-existing one ...

Clouds of Vertical Development - A cloud that has its base iii the low height range but extends upward into the middle or high altitudes.

Clouds A visible mass of water vapor suspended in the atmosphere above Earth's surface. Clouds form in areas where air rises and cools.

Clouds that form in sheets or layers often associated with weather fronts. Levanter a humid easterly wind that affects the Straits of Gibraltar mainly in summer or early autumn.

Clouds that look like pouches hanging from the underside of a cloud. Marine climate(6) A climate dominated by the ocean, because of the moderating effect of water, sites having this climate are considered relatively mild.

Low Clouds The bases of these clouds range from near the surface to about 6,500 feet in middle latitudes. These clouds are almost entirely of water, but the water may be supercooled at sub-freezing temperatures.

CAP CLOUDS - Convective clouds developing in neutral or de-stabilizing air over a pre-existing thermal from a forest fire or other similar heat source.

high clouds - See cloud classification. horizon - One of several lines or planes used as reference for observation and measurement relative to a given location on the surface of the earth, and referred generally to a horizontal direction (i.e.

HIGH CLOUDS A term used to signify cirriform clouds that are composed of ice crystals and generally have bases above 20,000 feet. The main types of high clouds are cirrus,cirrocumulus, and cirrostratus. This altitude applies to the temperate zone.

Scud Clouds Low cloud fragments often seen in association with and behind thunderstorm gust fronts. these clouds are ragged and wind-torn and are not usually attached to the thunderstorm base. Scud clouds do not produce severe weather.

high clouds: clouds found between 3-8 kilometers (10000-25000 feet) in polar regions and 6-18 kilometers (20000-60000 feet) in tropical regions. Contains cirriform clouds (cirrus, cirrocumulus, and cirrostratus).

High clouds are primarily composed of ice crystals; Medium clouds are a mixture of water droplets (usually super-cooled) and ice crystals, in varying proportion, and low clouds primarily water droplets, ...

Scud Clouds- Small, ragged, low cloud fragments that are unattached to a larger cloud base and often seen with and behind cold fronts and thunderstorm gust fronts. Such clouds generally are associated with cool moist air, such as thunderstorm outflow.

C1840 Clouds from fires Combustion products from big fires (forest, petrol stores, etc.) which often assume the appearance of dense, dark and sprouting clouds which develop vertically to great heights, ...

Rogue Clouds The term "rogue clouds" appeared in some of the forecast discussions this week (Greg Tipton with the National Weather Service used it).

BROKEN CLOUDS: Clouds which cover between 6/10 and 9/10 of the sky. CAA: Cold Air Advection. CEILING: The height of the lowest layer of clouds, when the sky is broken or overcast.

How do Clouds Form? Find the answer to all your weather science questions. Many answers include demonstrations, videos, and photos to help you understand cloud formation.

middle clouds"See cloud classification. middle infrared"The portion of the electromagnetic spectrum lying between the near-infrared and the far infrared. This covers the wavelength range approximately from 4 to 15 μm, but usage varies.

BROKEN CLOUDS - Clouds which cover between 6/10 and 9/10 of the sky. C CAA - Cold Air Advection. The movement of colder air toward a fixed point on the earth's surface.

MIDDLE CLOUDS A term used to signify clouds with bases between 6,000 and 18,000 feet. At the higher altitudes, they may also have some ice crystals, but they are composed mainly of water droplets.

Billow clouds - bands of cloud stretching across the wind field. Cap cloud - one that sits still over a mountain ...

CUMULUS CLOUDS - Puffy clouds caused by small areas of lifting air. Top of Page D ...

Mammatus Clouds - Rounded, smooth, sack-like protrusions hanging from the underside of a cloud (usually a thunderstorm anvil).

Mammatus Clouds - cloud features resembling pouches which hang from the underside of a cloud (usually a thunderstorm anvil) and are typically associated with intense cumulonimbus clouds ...

Mammatus clouds- Clouds that look like pouches or cow's udders hanging from the underside of a cloud. Marine climate- A climate controlled largely by the ocean. The ocean's influence keep winters relatively mild and summers cool.

Orographic Clouds: Clouds formed when air forced to rise when flowing over mountains or large hills reaches the condensation level.

Convective clouds: A cloud that results from convection. Convergence: The horizontal coming-together of air that can lead to lifting.

Lenticular Clouds - A cloud that generally has the form of a smooth lens. They usually appear in formation as the result of oragraphic origin. Viewed from the ground, the clouds appear stationary as the air rushes through them.

Clouds composed of small particles, mostly ice crystals. Because the particles are fairly widely dispersed, this usually results in relative transparency and whiteness, often producing a halo phenomena not observed in other clouds forms.

Noctilucent cloudsIn polar regions some clouds are shining white, orange or light blue after sunset. These are cirrus-like ice clouds in a height of 65 - 95 kilometers.

noctilucent clouds—Clouds of unknown composition which occur at great heights, probably around 75 to 90 kilometers.

Fair-weather clouds with broad horizontal bases, producing no precipitation and rarely covering more than one-half of the sky. CUMULUS (TOWERING) ...

Warm Cloud - Clouds that form at temperatures above freezing. Warm Front - A front that moves in such a way that warm air replaces cold air. Waterspout - A column of rotating wind over water that has characteristics of a dust devil and tornado.

Nacreous CloudsClouds of unknown composition that have a soft, pearly luster and that form at altitudes about 25 to 30 km above the Earth's surface. They are also called "mother-of-the-pearl clouds." ...

Cirrus Detached clouds in the form of white, delicate filaments or white or mostly white patches or narrow bands. These clouds have a fibrous (hair-like) appearance, or a silky sheen, or both.

CU FIELD- Cumulus clouds covering a large spatial area. CUT-OFF LOW- Closed lows that become cut-off from the main flow pattern are called cut-off lows. Click here for a cut-off low example. CWA- County Warning Area ...

Cumulus - Detached clouds, generally dense and with sharp outlines, showing vertical development in the form of domes, mounds, or towers. Tops normally are rounded while bases are more horizontal. See Cb, towering cumulus.

Mamma - Pouch-like clouds, usually found beneath the anvil of a thunderstorm. Meridional - In the north-south direction; along a meridian.

Some of the information that is gathered by weather satellites, such as GOES9, includes upper air temperatures and humidity, recording the temperatures of cloud tops, land, and ocean, monitoring the movement of clouds to determine upper level wind ...

It most often falls from stratiform clouds, but can fall as snow showers from cumuliform ones. It usually appears clustered into snowflakes.

Chinook ArchA foehn cloud formation appearing as a bank of altostratus clouds east of the Rocky Mountains, heralding the approach of a chinook. It forms in the rising portion of standing waves on the lee side of the mountains.

Transverse BandsBands of clouds oriented perpendicular to the flow in which they are embedded. They often are seen best on satellite photographs.

Scud Ragged low clouds, usually stratus fractus. Most often applied when such clouds are moving rapidly beneath a layer of nimbostratus.

These clouds are of high altitude (20,000-40,000 feet or 6000-12,000 meters). cirrostratus A cloud belonging to a class characterized by a composition of ice crystals and often by the production of halo phenomena.

Clouds may be classified on their visible appearance, height, or form.

Roll clouds, or arches, may form around the periphery of the storm. There may be rotation in a horizontal plane as well, and lowering of pressure can produce a mesocyclone, a miniature rotating low.

ACCAS (usually pronounced ACK-kis) - AltoCumulus CAStellanus; mid-level clouds (bases generally 8 to 15 thousand feet), of which at least a fraction of their upper parts show cumulus-type development.

During thunderstorms, static electricity builds up within the clouds. A positive charge builds in the upper part of the cloud, while a large negative charge builds in the lower portion.

Many things can reflect small amounts of radar energy including clouds, smoke, and fog. Even atmospheric effects like inversion layers and the variation in air density introduced by temperature variation can produce echoes.

Cumuliform: having the appearance or character of cumulus clouds. Cumulonimbus: a cloud of a class indicative of thunderstorm conditions characterized by large, dense towers that often reach altitudes of 30,000 ft (9000 m) or more, ...

CEILING: The height ascribed to the lowest layer of clouds or obscuring phenomena when it is reported as broken, overcast, or obscuration and not classified as thin or partial. The ceiling is termed unlimited when these conditions are not satisfied.

precipitation: rain, drizzle and other forms of moisture falling from clouds.

See also: Cloud, Air, Weather, Surface, Water