Small clouds look like torn cotton candy.
They break off from big clouds. Strong winds make them look ragged. They change shape very fast. You can see them in the sky. Do you see small clouds today?
Small clouds look like torn cotton candy.
They break off from big clouds. Strong winds make them look ragged and shredded. These clouds change shape very fast.
Some clouds look like tufts above a forest. They often appear after it rains. Other small clouds stay under big rain clouds. These are called scud clouds. They can show if a storm is growing. Look up to find these tiny clouds!
Fractus clouds are small and ragged. They look like torn pieces of cotton candy.
These clouds break off from larger clouds. Strong winds often shred them. This gives them a jagged look. They change shape very fast. They do not have clear bottoms.
There are two main kinds. One kind is cumulus fractus. These look like ragged cumulus clouds. They can form near summer storms. The other kind is stratus fractus. These are darker and smaller. They are spread out more.
Sometimes many fractus clouds gather under a big cloud. We call these pannus or scud clouds.
Scud clouds can show if a storm is growing. They often form where warm air rises. They also form where cool air moves. Some scud clouds look like tufts above a forest. These often appear after it rains. Another type is fractonimbus. These are dark-gray and ragged. They form under clouds that are dropping rain. They do not make rain themselves.
Fractus clouds are small and ragged cloud fragments. They often look like torn pieces of cotton candy. These clouds are usually found under a larger cloud base. They are called accessory clouds. This means they come from a main cloud. They can break off or be sheared away. Strong winds often give them a shredded look. They change their shape very quickly.
These clouds work in a very interesting way. They form when parts of a larger cloud break away. Strong winds can tear them into jagged pieces. Sometimes they form when the ground heats up. This heat causes convection, or rising air. This can turn them into cumulus clouds. They do not have a clear bottom edge. They can also form near the ground.
Scientists use different names for these clouds. There are two principal forms of fractus. The first type is cumulus fractus. These look like ragged cumulus clouds. The second type is stratus fractus. These are darker and smaller than the first kind. They also have particles that are spread out more. These clouds help us see wind movements. They show how air moves under a parent cloud.
Many different types of fractus exist in nature. You might see masses of them under a main cloud. These are called pannus or scud clouds. Another type is called fractonimbus. These are dark-gray and ragged. They form under clouds that are dropping rain. They do not make rain themselves. Sometimes they merge with the clouds above them. You can also see stratus silvagenitus near forests. These look like ragged tufts rising from trees.
Scud clouds are very important during rainstorms. They often form in the updraft area. This happens when precipitation cools the air. The cool air causes condensation to occur. Scud clouds are common on the leading edge of a storm. They often appear under shelf clouds. If the scud is rising toward a main updraft, the storm may still be growing. This can happen near a rain-free base or a wall cloud.
Fractus clouds are small, irregular cloud fragments that appear ragged and shredded. They are often described as looking like torn pieces of cotton candy. These clouds are classified as accessory clouds. This means they are not independent structures. Instead, they are formed when pieces break off from a larger, ambient cloud. They usually exist beneath the base of a parent cloud. Because they lack clearly defined bases, they often seem to change shape rapidly.
The formation of fractus clouds is driven by wind and air movement. Strong winds often shear these fragments away from a main cloud. This shearing action creates their characteristic jagged and shredded appearance. These clouds are highly dynamic and can form or dissipate very quickly. Sometimes, they develop because the ground heats up. This heat triggers convection, which is the process of rising air. If convection is strong enough, these small fragments may eventually develop into full cumulus clouds.
There are two principal forms of these accessory clouds. The first is cumulus fractus, which was formerly called fractocumulus. These clouds look like ragged versions of standard cumulus clouds. They can also appear as white, ragged fragments that are spaced far apart. These fragments may originate from cumulus clouds that have already dissipated. The second principal form is stratus fractus, formerly known as fractostratus. You can tell stratus fractus apart from cumulus fractus by several features. They have a smaller vertical extent and a darker color. Additionally, their particles are more widely dispersed.
Scientists use specific names for different groups of these clouds. When multiple masses of fractus clouds gather under a main cloud, they are called pannus or scud clouds. Another specific type is fractonimbus. These are dark-gray, ragged clouds that form under clouds that are producing precipitation. Examples of such parent clouds include nimbostratus, altostratus, or cumulonimbus. While fractonimbus exist under rain-producing clouds, they do not produce precipitation themselves. Over time, they may merge completely with the nimbostratus clouds above them.
Other specialized forms exist in specific environments. Stratus silvagenitus clouds are a type of scattered stratus fractus. These often appear as ragged tufts of cloud that seem to rise directly from forests. This usually happens just after rain or during periods of high humidity. Observing these clouds provides important data about the atmosphere. Specifically, fractus clouds give an indication of wind movements occurring under a parent cloud. They act as a visual map of how air is moving in that specific layer.
In the context of thunderstorms, scud clouds play a significant role. During rainstorms, scud often forms in the updraft area. This occurs because precipitation from a downdraft cools the air. This cooling causes condensation to happen below the main cloud deck. Scud clouds are very common on the leading edge of a thunderstorm. They often appear when warm, moist air is lifted by a gust front. In these situations, scud is frequently found underneath shelf clouds.
Monitoring the movement of scud can tell us about the strength of a storm. If the scud is rising and moving toward the main updraft, the thunderstorm may still be developing. This development is sometimes marked by a wall cloud or a rain-free base. Scud can form in both inflow and outflow areas of a storm system. By studying these small, ragged fragments, meteorologists can better understand the complex life cycles of larger storm systems and the turbulent air movements that drive them.
Where will your curiosity go next?
🖼️ Images & Media (3)
More to explore
✨ What else?
Related topics you might enjoy
🔬 Go deeper
More advanced topics to explore
🪜 Step back
Simpler topics to build understanding
What is Nepedia?
A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.