Altostratus is a middle-altitude cloud genus made up of water droplets, ice crystals, or a mixture of the two. Altostratus clouds are formed when large...

The altostratus undulatus is a type of altostratus cloud with signature undulations within it. These undulations may be visible (usually as "wavy bases")...

Opacity-based varieties Altostratus translucidus (V-49) Altostratus through which the sun can be seen. Altostratus opacus (V-50) Altostratus that completely blocks...

precipitation that evaporates before reaching the ground. Genus altostratus (As) – Altostratus is a midlevel opaque or translucent nonconvective veil of gray/blue-gray...

front, where the altostratus is starting to fragment, resulting in patches of altocumulus perlucidus between the areas of altostratus. Altocumulus is also...

preceded by higher-level clouds such as cirrostratus and altostratus. Often, when an altostratus cloud thickens and descends into lower altitudes, it will...

sheen in the sky or as a striated sheet. They are sometimes similar to altostratus and are distinguishable from the latter because the Sun or Moon is always...

away. A thickening and lowering of these high clouds into middle-stage altostratus or altocumulus is a good sign the warm front or low has moved closer...

stability and wind shear. As the front approaches, middle-étage gives way to altostratus and low-level stratocumulus with intermittent light precipitation if...

when a high grey nebulous altostratus layer thins out into a whitish layer of featureless high cloud. Stratus cloud Altostratus cloud Nimbostratus cloud...

detached, and of irregular form, found beneath nimbostratus, cumulonimbus, altostratus and cumulus clouds. These clouds are often ragged or wispy in appearance...

gusty winds. They are also often seen underneath the cirrostratus and altostratus sheets that often precede a warm front, as these higher clouds decrease...

hours away. A thickening and lowering of cirrocumulus into middle-étage altostratus or altocumulus is a good sign that the warm front or low front has moved...

cloud, a cloud type Stratocumulus cloud, a cloud type Altostratus cloud, a cloud type Altostratus undulatus cloud, a cloud type Cirrostratus cloud, a cloud...

into cirrostratus, which then thicken and lower into altocumulus and altostratus. The next set of clouds are the rain-bearing nimbostratus clouds. When...

or "Asi" A US Navy hull classification symbol: Submarine tender (AS) Altostratus, a cloud that is sometimes abbreviated as As. AS, Indonesian abbreviation...

frontal zone forces broad areas of lift, which form cloud decks such as altostratus or cirrostratus. Stratus is a stable cloud deck which tends to form when...

droplet all of similar provenance are ideal for iridescence. When sheet of altostratus cloud is seen lower down and skirting a cumulonimbus cloud, it is classified...

aviation. An approaching weather front often brings mid-level clouds (e.g. altostratus or altocumulus), which when expansive and dense, reduces insolation and...

refer to: Any of the stratus family of clouds (fog, stratus clouds, altostratus clouds, cirrostratus clouds, nimbostratus clouds) and the precipitation...

extend from the base of a cumulonimbus cloud, but may also be found under altostratus, and cirrus clouds, as well as volcanic ash clouds. When occurring in...

altocumulus for mid-level cumuliform and stratocumuliform types and altostratus for stratiform types in the same altitude range. 1856 – William Ferrel...

Fractonimbus exist only under precipitation clouds (such as nimbostratus, altostratus or cumulonimbus), and don't produce precipitation themselves. Fractonimbus...

factor of 6, from 0.12 in the cloud-free case to 0.76 in the case of altostratus cloud. The absolute magnitude in the table corresponds to an albedo of...

middle atmosphere. The effect of gravity waves in clouds can look like altostratus undulatus clouds, and are sometimes confused with them, but the formation...

recorded by the aviation industry as a signal of developing thunderstorms. altostratus American Meteorological Society (AMS) A scientific and professional organization...

to 7 kilometers) carry the prefix alto- resulting in the genus names altostratus and altocumulus. Low level clouds have no height-related prefixes, so...

stratocumulus at 400 metres (1,300 ft) and to 8/8 coverage (overcast) by altostratus at 2,100 metres (6,900 ft)." According to the Brazilian Air Ministry...

motion within the Earth's atmosphere which form clouds decks such as altostratus or cirrostratus. Stratus is a stable cloud deck which tends to form when...

none none none 1 Cumulus (fair weather) Altostratus (thin) Cirrus (filaments) 2 Cumulus (towering) Altostratus (thick) Cirrus (dense) 3 Cumulonimbus (no...