Stratus (St) A principal low-level cloud type (cloud genus) in the form of a low-altitude, light to dark gray cloud layer with a rather uniform base. Stratus clouds are generally diffuse and dull.
Cirrostratus Clouds sheet-like and nearly transparent
Cirrostratus are sheet-like, high-level clouds composed of ice crystals.
stratus - (Abbreviated St.) A principal cloud type (cloud genus) in the form of a gray layer with a rather uniform base.
Stratus - A low, generally gray cloud layer with a fairly uniform base. Stratus may appear in the form of ragged patches, but otherwise does not exhibit individual cloud elements as do cumulus and stratocumulus clouds.
Stratus - a low-level cloud in the form of a gray layer with a rather uniform base
Sublimation - the process of changing from a solid directly to vapor or gas ...
Stratus: The lowest clouds, generally found below 3000 metres altitude and often appearing as an overcast deck. Can also be found as scattered patches. Individual cloud elements have very ill-defined edges.
STRATUS: Low-level clouds with a rather uniform base
SUBSIDENCE: Sinking air that is associated with warming air and little cloud formation.
SUBTROPICAL JET: The branch of the jet stream that is found in the lower latitudes.
STRATUS One of the three basic cloud forms (the others are cirrus and cumulus. It is also one of the two low cloud types. It is a sheetlike cloud that does not exhibit individual elements, and is, perhaps, the most common of all low clouds.
Stratus (Sc): A cloud layer with a uniform base and a gray color.
Sublimation: The process of ice changing phase into vapor.
stratus clouds: a low cloud type that forms a gray layer with a uniform base. Does not usually produce precipitation. Overcast skies.
temperature inversion: when a layer of air has a temperature increase instead of decrease with altitude.
Stratus A low, gray cloud layer with a rather uniform base whose precipitation is most commonly drizzle.
Streamline A line that shows the wind flow pattern.
Stratus (St) It is a low, uniform sheet-like cloud. Stratus may appear in the form of ragged patches, but otherwise does not exhibit individual cloud elements as do cumulus and stratocumulus clouds.
Stratus (St) Low clouds that occur as a uniform gray layer stretching from horizon to horizon. They may produce drizzle, and where they intersect the ground, they are classified as fog.
stratus—A low, gray cloud layer or sheet with a fairly uniform base; sometimes appears in ragged patches; seldom produces precipitation but may produce drizzle or snow grains. A stratiform cloud.
stratus fractus—See fractus.
altostratus" (Abbreviated As.) A principal cloud type (cloud genus) in the form of a gray or bluish (never white) sheet or layer of striated, fibrous, or uniform appearance.
Altostratus
Middle level grey sheet, thinner layer allows sun to appear as through ground glass.
ALTOSTRATUS This middle cloud genus is composed of water droplets, and sometimes ice crystals, In the mid-latitudes, cloud bases are generally found between 15,000 and 20,000 feet.
Altostratus
(As) Mid-level cloud composed of water droplets and ice crystals. Usually gives the sun a watery or dimly visible appearance.
Anabatic winds ...
Altostratus (As) It is a bluish veil or layer of clouds having a fibrous appearance. The outline of the sun may show dimly as through frosted glass. It often merges gradually into cirrostratus.
Altostratus
A cloud of a class characterized by a generally uniform gray sheet or layer, lighter in color than nimbostratus and darker than cirrostratus. These clouds are of medium altitude, about 8000 to 20,000 ft (2400-6100 m).
Ambient ...
Nimbostratus
(Ns) Latin "nimbus" - violent rain, "stratus" - layer
A dark grey-looking cloud that often covers the entire sky. Some definitions of Nimbostratus include a required rainfall rate.
NIMBOSTRATUS This cloud exhibits a combination of rain or snow, and sometimes the base of the cloud cannot be seen because of the heaviness of precipitation.
Nimbostratus
(abbrev. NS)- A cloud of the class characterized by a formless layer that is almost uniformly dark gray; a rain cloud of the layer type, of low altitude, usually below 8000 ft (2400 m).
NLY ...
Cirrostratus (Cs): They are thin, whitish cloud layers appearing like a sheet or veil. They are diffuse sometimes partially striated or fibrous.
Nimbostratus We have already seen this type of cloud several times this month. This term is derived from the original Latin based cloud classification system proposed by Englishman Luke Howard in 1803.
Stratus and stratocumulus clouds at about 4,000 ft. and 6,000 ft over our house looking east out our backyard.
Stratus - Grey flannel blanket of cloud.
Towering cumulus - A cumulonimbus in the making. High piled cumulus cloud.
Continental climate - a drier climate with great temperature extremes throughout the year.
STRATUS: A principal cloud type, gray in color, present at low altitudes with a uniform base.
SUBTROPIC: The climatic region adjacent to the tropics, which are located between 20 and 40 degrees latitude in both hemispheres.
STRATUS CLOUDS - Widespread layer clouds formed when a layer of air rises slowly. Usually smooth conditions are associated with stratus clouds.
STROBE - A blinking light mounted on an aircraft to improve visibility.
Stratus: a cloud of a class characterized by a gray, horizontal layer with a uniform base, found at a lower altitude than altostratus, usually below 8000 ft (2400 m).
Stratus Clouds - Low-lying, gray and sheetlike clouds that often produce drizzle. Stratus clouds are a principle cloud type.
Summer - The warmest season of the year. Summer officially begins in late June and last until late September.
STRATUS - Low layered clouds composed of mostly water droplets. Fog is a stratus cloud at ground level. Light drizzle may fall from these clouds. Not to be confused with STRATOCUMULUS, which is often higher and formed by the spreading out of CUMULUS.
High cloudCirrus, cirrostratus and cirrocumulus. High risk (of severe thunderstorm)Severe weather is expected to affect more than 10 percent of the area.
SCUD Low fragments of clouds, usually stratus fractus, that are unattached and below a layer of higher clouds, either nimbostratus or cumulonimbus.
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.
Scud Ragged low clouds, usually stratus fractus. Most often applied when such clouds are moving rapidly beneath a layer of nimbostratus.
Altocumulus, altostratus, and nimbostratus are the main types of middle clouds. This altitude applies to the temperate zone. In the polar regions, these clouds may be found at lower altitudes.
Clouds fall into two general categories: sheetlike or layer-looking stratus clouds (stratus means layer) and cumulus clouds (cumulus means piled up). These two cloud types are divided into four more groups that describe the cloud's altitude.
stratus (unbroken layer of cloud), nimbostratus (dark, unbroken layer, rain cloud)
cumulus (puffy, irregular clouds), stratocumulus (cumulus clouds arranged in a broad layer)
clouds of vertical development ...
Clouds can be categorized into two general groups: cumulus clouds (tall, cotton ball) and stratus clouds (layered); these can be divided even further to 4 sub-groups describing altitude: 20, ...
Stratosphere: From the Latin word "stratus" meaning a spreading out. The stratosphere extends from the troposphere's 7 to 17 km (23,000 - 60,000 ft) range to about 50 km (160,000 ft). Temperature increases with height.
In the 'Low' cloud classification come: Stratus (St); Stratocumulus (Sc); Cumulus (Cu) and Cumulonimbus (Cb).
Drizzle - Precipitation from stratus clouds consisting of tiny droplets.
Dry Adiabatic Rate - The rate of adiabatic cooling or warming in unsaturated air. The rate of temperature change is 1°C per 100 meters.
Cumulus, which is a heaped cloud Stratus a sheet cloud Low cloud from the surface to 8000 Feet mainly made up of water droplets Medium cloud 8000-20000 Feet made from supercooled water droplets and ice crystals High cloud 20000 Feet and above ...
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Altocumulus, Altostratus, AS, Brocken Specter, Glory, Nimbostratus, NS
Also listed in ...
These clouds can form due to orography, a saturated PBL (with low level fog and/or stratus building under a middle level inversion), or lifting mechanisms within the region of high pressure (WAA, moisture advection).
The Bergeron process competes with growth and coalescence of droplets in clouds above 0°C, which can create drizzle in nimbostratus, and rain in tropical convective storms.
The subsiding air warms up, its relative humidity falls, and fine weather is the usual accompaniment of subsidence, though fog, stratus or stratocumulus clouds may occur under certain conditions. The contrary case is called convergence.
 See also: High, Radiation, Center, Nimbostratus, NOAA
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