User:Rollcloud/gallery/clouds

This is a subcategory exclusive for my photos of clouds, the cloud types will be ordered from low clouds on top to high clouds on the bottom

Stratus

Low-level stratiform cloud that forms by gentle winds carrying moist air up, which then condenses into a stratus cloud

Stratus: Species

Stratus cloud species

Stratus nebulosus

Feature-less, usually white low-level cloud, indicates the presence of light wind and atmospheric stability

Stratus nebulosus
Stratus on a hill
Stratus nebulosus
Stratus nebulosus (from the ground)
Stratus nebulosus

Stratus fractus

Ragged and wispy stratus clouds, they are caused by strong winds blowing off parts of stratus and/or stratocumulus clouds, and are also seen in thunderstorms and rainstorms, in this case they are caused by bits of moisture condensing into clouds

$Stratus fractus clouds$

Stratus fractus clouds
$Stratus fractus$

Stratus fractus
Stratus cloud on a mountain range
Dissipating stratus clouds
$Stratus nebulosus opacus and stratus fractus.$

Stratus nebulosus opacus and stratus fractus.

Stratus: Varieties

Stratus cloud varieties

Stratus undulatus

Rare cloud type which is formed by disturbances in the gentle wind shear

Stratus undulatus
Stratus undulatus asperitas
Stratus undulatus
Stratus undulatus
Stratus undulatus
Stratus undulatus

Stratus translucidus

Stratus clouds in which the Sun or Moon's position is visible

Stratus translucidus at daytime
Stratus translucidus at nighttime

Stratus opacus

Stratus clouds that are thick enough to hide the Sun or Moon´s position

Stratus: Supplementary features

Stratus cloud supplementary features

Stratus fluctus

Rare and short lived cloud type in which what appear to be sea waves are visible in a lower cloud base

Stratus fluctus

Stratus praecipitatio

Stratus clouds that produce light drizzle/rain and ice crystals that reach the ground

Stratus: Mother clouds

Stratus that originate from other cloud types and/or formation mechanisms that aren´t typical of stratus clouds

Stratus silvagenitus

Stratus clouds that form as a result of evaporation and/or evapotranspiration in forests, normally after it has rained in a forested area or in a particularly humid day in such areas

Stratus silvagenitus
Stratus silvagenitus

Stratus caractagenitus

Stratus clouds that originate from the spray and condensation in water falls

Stratus homogenitus

Stratus clouds that originate from human activity

Stratus nimbostratogenitus

Stratus clouds that originate from the partial transformation of a nimbostratus cloud, normally a few minutes after the cloud has stopped producing precipitation

Nimbostratus

low-level Stratiform cloud which produces continuous precipitation.

Nimbostratus: Supplementary features

Nimbostratus supplementary features

Nimbostratus praecipitatio

Nimbostratus producing precipitation

Nimbostratus cloud
Nimbostratus with raindrops in a car window
Nimbostratus cloud
Nimbostratus cloud

Nimbostratus virga

Nimbostratus producing precipitation that evaporates before reaching the ground

NO IMAGE YET

Nimbostratus pannus

Stratus fractus clouds formed under nimbostratus producing precipitation

Nimbostratus praecipitatio pannus
Decaying former nimbostratus

Cumulus

Low level vertical cloud which forms as a result of thermals from the ground; if said thermal is strong enough, the cloud can turn into a cumulus congestus and cumulonimbus.

Cumulus: Species

Cumulus cloud species

Cumulus humilis

Flat and white cloud (sometimes has light-grey colored cloud base), indicates atmospheric stability and continous fair weather

Cumulus humilis stratogenitus

Cumulus mediocris

Puffy white cloud with a bright sun-lit head but a dark underside, indicates moderate atmospheric instability and considerable upcurrents

Cumulus mediocris
Cumulus mediocris cloud
Cumulus mediocris cloud
Mature cumulus mediocris

Cumulus congestus

Cumulus clouds that are taller than they are wide, they indicate strong upward air movement and atmospheric instability

Young cumulus congestus
Cumulus congestus clouds
Cumulus congestus
Cumulus congestus
Cumulus congestus
Cumulus congestus
Cumulus congestus
Precipitation from a cumulus congestus vloud
Underside of cumulus congestus
Cumulus congestus praecipitatio pannus
Cumulus congestus pileus
Cumulus congestus velum
Cumulus congestus clouds near a small mountain
Cumulus congestus in an environment with wind shear

Cumulus castellanus

Cumulus cloud base that has cumulus clouds that are taller than they are wide

Cumulus castellanus
Cumulus castellanus

Cumulus fractus

Ragged cumulus clouds, often found in environments with strong winds

Cumulus: Varieties

Cumulus cloud varieties

Cumulus radiatus

Cumulus clouds aligned in lines parallel to the wind shear

Cumulus radiatus
Cumulus mediocris radiatus

Cumulus: Supplementary features

Cumulus cloud supplementary features

Cumulus pileus

Lenticular-like cloud that forms above a cumulus cloud, this cloud type forms when there's rapidly rising air within the cloud, which indicates that there's a strong updraft within the cloud and that the cumulus cloud has a high chance of turning into a cumulus congestus and evem a cumulonimbus cloud.

Cumulus humilis pileus
Cumulus mediocris pileus
Cumulus humilis pileus

Cumulus fluctus

Cumulus clouds with waves in it resembling sea waves, this cloud type is rare and short-lived

$Cumulus fractus fluctus$

Cumulus fractus fluctus

Cumulus virga

Precipitation from a cumulus that evaporates before reaching the ground

Cumulus virga
Cumulus virga
Cumulus mediocris virga

Cumulus tuba

Funnel cloud from a cumulus cloud, normally associated with fair weather

Cumulus humilis tuba

Cumulus praecipitatio

Rain from a cumulus cloud that reaches the ground

Cumulus humilis praecipitatio

Cumulus arcus

Shelf cloud in a cumulus cloud, very uncommon

NO IMAGE YET

Cumulus pannus

Ragged. wispy stratus fractus clouds found under cumulus clouds producing precipitation

Cumulus velum

Horizontal cloud veil in a cumulus cloud, very rare.

Cumulus caractagenitus

Cumulus clouds originating from the spray and condensation of water falls

Cumulus flammagenitus

Cumulus clouds originating from the hot air of fires, whether they are wildfires, or, in rarer cases, urban fires

Cumulus homogenitus

Cumulus clouds originating from human activity

Cumulonimbus

Multi-level cloud that forms as a result of a strong updraft

Cumulonimbus: Species

Cumulonimbus cloud species

Cumulonimbus calvus

The most common type of cumulonimbus cloud, this cloud type is formed by an updraft of warm and moist air, it's the next stage of a cumulus congestus cloud, indicates atmospheric instability

Cumulonimbus calvus
Developing calvus
Cumulonimbus calvus
Cumulonimbus calvus
Cumulonimbus calvus on cumulonimbus incus' flanking line
Developing cumulonimbus calvus over mountain; orographic cloud
Orographic Cumulonimbus Calvus

Cumulonimbus capillatus

Intermediate stage between cumulonimbus calvus and cumulonimbus incus, indicates strong atmospheric instability

Cumulonimbus capillatus
Dissipating capillatus

Cumulonimbus: Supplementary features

Cumulonimbus supplementary features

Cumulonimbus incus

Mature cumulonimbus, this cloud develops after the evolution of a cumulonimbus capillatus cloud, indicates strong atmospheric instability, typically includes an anvil cloud of cirrus/cirrostratus, which spreads horizontally

Cumulonimbus incus
Young cumulonimbus incus
Underside of a cumulonimbus incus' anvil cloud, which also happens to have mammatus clouds
Cumulonimbus incus
Cumulonimbus incus
Cumulonimbus incus
Cumulonimbus incus and cumulonimbus pannus
Cloud base from a cumulonimbus incus cloud
Cumulonimbus incus with cumulus clouds forming besides it
Cumulonimbus incus forming in sea
Typical Mexican summer cumulonimbus incus cloud
Cumulonimbus incus with stratocumulus castellanus

Cumulonimbus arcus

Cloud that may or may not be attached to the cumulonimbus parent cloud, this cloud type is formed when cool air from a thunderstorms downdraft starts moving the warm and moist air that was already present upward, this warm and moist air then cools and expands as it rises, and it condenses into an arcus cloud, there are two types of arcus clouds, shelf cloud and roll clouds, with roll clouds being the rarest; while shelf clouds are attached to the cumulonimbus parent cloud, roll clouds arent.

Cumulonimbus arcus
Cumulonimbus arcus
Cumulonimbus arcus

Cumulonimbus murus

Cumulonimbus accesory cloud that sometimes exhibits rotation, typically forms in a rain-cooled area that is also rain-free

Cumulonimbus murus

Cumulonimbus cauda

Cumulonimbus murus cloud with a "tail"

Cumulonimbus murus cauda

Cumulonimbus pileus

Short-lived cloud that forms in cumulonimbus(calvus only), they are formed in clouds in which the air is rising so rapidly it condenses into a hooded cap cloud, this cloud indicates that the updraft (or updrafts) within the storm are strong, and that severe weather will probably happen

Cumulonimbus pileus
Cumulonimbus pileus
Cumulonimbus pileus
Cumulonimbus calvus pileus
Cumulonimbus calvus pileus & Stratocumulus floccus
Cumulonimbus calvus pileus

Cumulonimbus mamma

Bubble-like protuberances present in thunderstorms, they are often found in the anvil cloud of the cumulonimbus

Mammatus clouds
Mammatus clouds
Cumulonimbus incus mamma
Remnants of a severe thunderstorm in Northern Mexico, associated with a cold front

Cumulonimbus pannus

Stratus fractus in the area the cumulonimbus cloud is covering, this cloud type typically forms in the updraft of the thunderstorm, as the cumulonimbus absorbs the moisture present in the air, some of it condenses as it rises and cools, this ends up producing the pannus cloud, it also forms while the cloud is producing precipitation, as bits of moisture in the air condense into clouds, most pannus clouds form near the ground

Scud cloud
Cumulonimbus pannus, in this case, they formed in the updraft, behind the house in the photo is a lake, and there was also moisture already present on the air.

Cumulonimbus praecipitatio

Cumulonimbus producing precipitation

Cumulonimbus praecipitatio

Cumulonimbus virga

Cumulonimbus producing precipitation that evaporates before reaching the ground

Cumulonimbus praecipitatio virga pannus

Cumulonimbus velum

Altostratus cloud that forms around and in the middle of a cumulonimbus cloud, it forms in the presence of a humid and stable layer of air near the cumulonimbus cloud, this cloud type is rare

Cumulonimbus tuba

Cumulonimbus with a funnel cloud/tornado

Cumulonimbus flumen

Long tail-like cloud that, unlike cauda, is detached from the murus accesory cloud

Cumulonimbus flammagenitus

Cumulonimbus originated from the hot air of a fire, the fire may be natural (wildfire) or man-made (in rarer cases)

NO IMAGE YET

Stratocumulus

Low-level stratocumuliform clouds

Stratocumulus: Species

Stratocumulus cloud varieties

Stratocumulus castellanus

Stratocumulus cloud base with turrets that rise vertically, this type of cloud indicates increasing atmospheric instability

Stratocumulus castellanus
Early stages of stratocumulus castellanus

Stratocumulus floccus

Ragged but cumuliform stratocumulus clouds that come in groups, this cloud type indicates atmospheric instability at the level the clouds are in

Stratocumulus floccus after the passage of a weak cold front
Stratocumulus floccus with bits of sunlight in them at sunset
Stratocumulus floccus
Extreme and awkward close up of stratocumulus floccus
Stratocumulus floccus with possible stratocumulus castellanus in background
Stratocumulus floccus after a sunset

Stratocumulus lenticularis

Stratocumulus in a shape similar to a lens or an almond, they are formed by waves of wind that were formed by wind passing over obstacles (e.g. hills, buildings, etc.)

Stratocumulus lenticularis
Stratocumulus lenticularis
Stratocumulus lenticularis
Stratocumulus lenticularis
Stratocumulus lenticularis
Stratocumulus lenticularis in a desert
Stratocumulus lenticularis

Stratocumulus stratiformis

Stratocumulus clouds that come in large, lumpy sheets, they have minimal convective activity

Stratocumulus mamma
Stratocumulus stratiformis opacus
Sc strt op
Stratocumulus originating from an early morning stratus cloud
Stratocumulus mamma (small)
Stratocumulus opacus stratiformis mamma

Stratocumulus volutus

Uncommon tube-shaped stratocumulus cloud type

Stratocumulus: Varieties

Stratocumulus cloud varieties

Stratocumulus undulatus

Type of stratocumulus cloud with undulations in it, or stratocumulus clouds aligned in rows perpendicular to the wind shear, normally caused by sinusoidal oscillation in the atmosphere

Stratocumulus opacus stratiformis undulatus asperitas
Stratocumulus undulatus opacus
Stratocumulus undulatus
Stratocumulus (possibly undulatus) stratiformis opacus
Stratocumulus undulatus during stormy conditions
Stratocumulus radiatus undulatus clouds, with lower cumulus clouds
Stratocumulus undulatus & Stratocumulus lenticularis

Stratocumulus radiatus

Stratocumulus clouds aligned in lines parallel to the wind shear

Stratocumulus radiatus
Stratocumulus radiatus
Stratocumulus radiatus

Stratocumulus lacunosus

Rare and short-lived stratocumulus cloud type with holes that resemble a honeycomb, they are caused by localized downdrafts striking the cloud

Stratocumulus lacunosus
Stratocumulus lacunosus
Stratocumulus lacunosus
Stratocumulus lacunosus

Stratocumulus opacus

Stratocumulus cloud that is thick enough to hide the Sun or Moon

Stratocumulus opacus
Stratocumulus opacus

Stratocumulus translucidus

Stratocumulus cloud that is thin enough to reveal the Sun or Moon´s position

Stratocumulus perlucidus

Stratocumulus with gaps

Stratocumulus duplicatus

Multilayered stratocumulus

Stratocumulus: Supplementary features

Stratocumulus cloud supplementary features

Stratocumulus cavum

Fallstreak hole in a stratocumulus cloud

NO IMAGE YET

Stratocumulus fluctus

Stratocumulus cloud base with waves in them, which resemble sea waves.

Stratocumulus fluctus during the arrival of a cold front, before a windy day
Stratocumulus fluctus

Stratocumulus praecipitatio

Precipitation from stratocumulus clouds that reaches the ground

Stratocumulus mamma

Bubble-shaped protuberances in a stratocumulus cloud cover

Stratocumulus virga

Precipitacion from a stratocumulus cloud that evaporates before hitting the ground

NO IMAGE YET

Stratocumulus asperitas

Chaotic, wavy stratocumulus underside

Altostratus

Mid-level stratiform cloud that forms when a large, moist and stable air mass rises and condenses

Altostratus: Varieties

Altostratus duplicatus

Multilayered altostratus cloud

NO IMAGE YET

Altostratus translucidus

Altostratus cloud in which the Sun or Moon are visible through

Altostratus translucidus
Altostratus translucidus
Altostratus translucidus

Altostratus undulatus

Altostratus cloud that presents undulations in it or altostratus aligned in lines perpendicular to the wind shear, usually formed by gravity waves

Altostratus undulatus asperitas
Altostratus undulatus
As un
Altostratus undulatus duplicatus
Altostratus undulatus

Altostratus opacus

Altostratus that can block the Sun or Moon

Altostratus opacus
Altostratus opacus

Altostratus radiatus

Altostratus aligned in lines parallel to the wind shear

Altostratus: Supplementary features

Altostratus supplementary features

Altostratus praecipitatio

Rain from an altostratus cloud that reaches the ground

NO IMAGE YET

Altostratus virga

NO IMAGE YET

Altostratus mamma

Altostratus with bubble-like protuberances falling from them

Small region of altostratus mamma during it's transformation to cirrostratus to altostratus
Deformed Altostratus mamma during sunset
Altostratus mamma

Altostratus pannus

Ragged fractus clouds underneath an altostratus cloud cover

Altostratus translucidus pannus

Altocumulus

Mid-level stratocumuliform cloud

Altocumulus: Species

Altocumulus castellanus

Altocumulus cloud base with rising turrets in it, indicates atmospheric instability.

Altocumulus castellanus
Altocumulus castellanus

Altocumulus floccus

Altocumulus with a Cumuliform head and ragged undersides

Altocumulus lenticularis

Altocumulus in the shape of a lens or almond, this type of cloud is often confused with an UFO, iindicates that warmer and windier weather is probably on the way

Altocumulus lenticularis
Altocumulus lenticularis
Altocumulus lenticularis
Altocumulus lenticularis
Altocumulus lenticularis
Altocumulus lenticularis caused by moist thunderstorm winds going up and down a portion of a mountain
Altocumulus lenticularis
Altocumulus lenticularis duplicatus

Altocumulus stratiformis

Altocumulus in large sheets that cover a large part of the sky. Indicates slight air mass instability

Altocumulus perlucidus translucidus stratiformis
Altocumulus in the morning
Altocumulus translucidus stratiformis cloud
High altocumulus with low stratocumulus
Altocumulus stratiformis opacus perlucidus
Altocumulus stratiformis opacus perlucidus

Altocumulus volutus

Rare, tube-shaped altocumulus cloud type

Early stages of an altocumulus volutus
Altocumulus volutus
distant altocumulus volutus

Varieties

Altocumulus cloud varieties

Altocumulus undulatus

Altocumulus cloud with undulations in it or lines aligned perpendicular to the wind shear, caused by gravity waves

Altocumulus undulatus clouds
Altocumulus undulatus clouds, zoomed in
Undulatus
Undulatus
Ac un
Ac un
Ac un
Ac un
Altocumulus stratiformis undulatus clouds
Ac st un
Altocumulus undulatus
Altocumulus perlucidus translucidus undulatus
Altocumulus radiatus undulatus
Small patches of altocumulus undulatus
Altocumulus undulatus with cirrocumulus undulatus on top of it.

Altocumulus radiatus

Altocumulus aligned in rows parallel to the wind shear

Altocumulus radiatus

Altocumulus lacunosus

Altocumulus cloud with holes in it, which resemble a honeycomb, caused by the interaction of a cold layer of air with a watmer layer of air in the atmosphere, which in return causes downdrafts and these strike the cloud

Altocumulus lacunosus with altocumulus floccus near it

Altocumulus opacus

Altocumulus clouds that are thick enough to hide the Sun or Moon

Altocumulus stratiformis opacus
Altocumulus stratiformis opacus

Altocumulus perlucidus

Altocumulus clouds with gaps that make higher clouds visible

Altocumulus duplicatus

Multi-layered altocumuliform clouds

NO IMAGE YET

Altocumulus translucidus

Altocumulus clouds that are thin enough to reveal the position of the Sun or Moon

Altocumulus stratiformis translucidus

Altocumulus: Supplementary features

Altocumulus cloud supplementary features

Altocumulus virga

Precipitation from an altocumulus cloud that evaporates before reaching the ground

Altocumulus virga
Altocumulus virga

Altocumulus cavum

Fall streak hole in an altocumulus cloud cover, the hole/s is/are caused by the falling of supercooled ice crystals in the cloud

Altocumulus stratiformis radiatus undulatus cavum

Altocumulus mamma

Bubbles in an altocumulus cloud cover, caused by localized downdrafts in the cloud

Altocumulus mamma
Altocumulus mamma

Altocumulus praecipitatio

Precipitation from an altocumulus cloud that reaches the ground

Altocumulus cumulonimbogenitus stratiformis praecipitatio

Atocumulus asperitas

Chaotic undulations under altocumulus clouds

NO IMAGE YET

Altocumulus fluctus

Sea waves on altocumuliform clouds

NO IMAGE YET

Cirrostratus

Mid-high level cloud composed of ice crystals, this cloud is responsible for most halo phenomena

Cirrostratus: Species

Cirrostratus cloud species

Cirrostratus nebulosus

Cirrostratus with a nebulous look, indicates atmospheric stability

Cirrostratus nebulosus clouds with a sun halo
Cirrostratus nebulosus

Cirrostratus fibratus

Fibrous cirrostratus clouds, caused by strong, continuous upper-level winds

Cirrostratus fibratus cumulonimbogenitus
Cirrostratus fibratus undulatus, with faint sun halo
Cirrostratus fibratus altostratomutatus with sun halo, the altostratus cloud's mother cloud was an altocumulus cloud.

Cirrostratus: Varieties

Cirrostratus cloud varieties

Cirrostratus undulatus

Cirrostratus with undulations in the cloud, caused by disturbances in wind shear

Cirrostratus undulatus before a thunderstorm
Cirrostratus undulatus
Thin Cirrostratus nebulosus undulatus
Thin Cirrostratus nebulosus undulatus

Cirrostratus duplicatus

Cirrostratus multi-layer clouds

NO IMAGE YET

Cirrostratus: Supplementary features

Cirrostratus supplementary features

Cirrostratus mamma

Bubbles in the cloud, often seen in cumulonimbogenitus (anvil), caused by localized downdrafts within the cloud, these protuberances are rarely seen in cirrostratus that don't come from thunderstorms

Cirrostratus cumulonimbogenitus mamma

Cirrostratus: Mother clouds

Cirrostratus that originate from different cloud types and/or are man-made

Cirrostratus cumulonimbogenitus

Extensive cirrostratus cloud that is the leftover of a dead cumulonimbus incus (orphan anvil)

Cirrostratus homogenitus

Man-made cirrostratus

NO IMAGE YET

Cirrocumulus

High-level clouds composed of mostly ice crystals, but also contain some water particles, they are generally short-lived, and form as a part of a transitional phase from cirrostratus to cirrus and viceversa

Cirrocumulus: Species

Cirrocumulus cloud species

Cirrocumulus castellanus

Rising turrets from a common cirrocumulus cloud base, indicates atmospheric instability.

Cirrocumulus castellanus & Cirrus castellanus
Cirrocumulus castellanus homogenitus
Cc cas

Cirrocumulus lenticularis

Cirriform clouds in the shape of a lens or an almond, they are caused by atmospheric waves caused by wind passing over obstructions, such as mountains or buildings

Cirrocumulus lenticularis
Cirrocumulus lenticularis
Cirrocumulus lenticularis
Cc len

Cirrocumulus stratiformis

Cirrocumulus clouds in the shape of a large sheet

Cirrocumulus clouds whose mother was a Cirrus cloud

Cirrocumulus floccus

Cirrocumulus clouds that have a cumuliform head but a ragged underbase, indicate atmospheric instability at the cloud's level

Cirrocumulus floccus undulatus

Cirrocumulus: Varieties

Cirrocumulus cloud varieties

Cirrocumulus lacunosus

Cirrocumulus clouds with holes resembling a honeycomb, the holes are caused by localized downdrafts caused by the interaction between a cold layer of air and a warmer layer of air in the atmosphere, this type of cloud is considered to be rare, and is usually short-lived

Cirrocumulus lacunosus
Cirrocumulus lacunosus
Cirrocumulus lacunosus
Early stages of cirrocumulus lacunosus undulatus

Cirrocumulus undulatus

Cirrocumulus with undulations in them or cirrocumulus aligned in rows perpendicular to the wind shear, it's usually caused by sinuosidial oscillations

Cirrocumulus radiatus undulatus
Cirrocumulus undulatus and Altocumulus stratiformis
Cirrocumulus lacunosus undulatus
Cirrocumulus undulatus homogenitus

Cirrocumulus: Supplementary features

Cirrocumulus cloud supplementary features

Cirrocumulus cavum

NO IMAGE YET

Cirrocumulus mamma

Bubbles falling from a cirrocumulus cloud, usually due to localized downdrafts falling through the cloud

Cirrocumulus mamma homomutatus

Cirrocumulus virga

Precipitation that evaporates before falling from the cirrocumulus cloud.

Cirrocumulus lacunosus virga
Cirrocumulus virga
Cirrocumulus homogenitus virga

Cirrocumulus: Mother clouds

Cirrocumulus clouds originating from a different cloud type/mechanism

Cirrocumulus homogenitus & homomutatus

Cirrocumulus clouds caused by contrails from airplanes, jets, etc. which didn't evaporate after a long time of them being on the air

Cirrocumulus homogenitus
Cirrocumulus homogenitus behind cumulus clouds
Cirrocumulus mamma homomutatus cloud
Contrail
Cirrocumulus virga homogenitus
Contrail and distrail on a cirrostratus nebulosus cloud

Cirrus

High-level clouds that are made of ice crystals

Cirrus: Species

Cirrus cloud species

Cirrus castellanus

Cirrus clouds with rising turrets from a common lower cloud base, indicate atmospheric instability

cumulus mediocris and cirrus castellanus
Cirrus castellanus
Cirrus castellanus
Distant cirrus castellanus

Cirrus fibratus

Fibrous cirrus clouds

Cirrus clouds with halo
Cirrus clouds
Cirrus in the form of an arrow
Supercooled clouds
V-shaped cirrus cloud
Cirrus fibratus
Sun behind cirrus cloud cover and a mountain before sunset

Cirrus spissatus

Thick cirrus clouds that can block out the Sun or Moon, they indicate considerable upward air movement reaching the troposphere if isolated, but can also be seen in the anvil of a cumulonimbus cloud (cumulonimbogenitus)

Cirrus spissatus mamma cumulonimbogenitus
Cirrus spissatus
Cirrus spissatus cumulonimbogenitus
Cirrus spissatus cumulonimbogenitus

Cirrus floccus

Cirrus clouds with cumuliform heads but ragged undersides which sometimes have virga falling from under them, indicates atmospheric instability

Cirrus floccus virga

Cirrus uncinus

Cirrus clouds in the shape of a comma, usually form before the arrival of a warm or occluded front and indicate that precipitation is possible within 24-48 hours

Cirrus uncinus
Cirrus uncinus
Cirrus uncinus
Cirrus uncinus
Very thin Cirrus clouds

Cirrus: Varieties

Cirrus cloud varieties

Cirrus duplicatus

Two cirrus cloud covers of different subtypes present in the same atmosphere

NO IMAGE YET

Cirrus intortus

Disorganized cirrus clouds

NO IMAGE YET

Cirrus vertebratus

Uncommon type of cirrus cloud, indicates the location of a jet stream

Cirrus radiatus

Cirrus clouds aligned in lines parallel to the wind shear, they indicate high atmospheric pressure and the direction of the wind in the upper atmosphere