Ragged clouds, also known as fractus clouds, are small, fragmented clouds that often appear torn or shredded. They are typically found under a larger cloud base, adding a unique texture to the sky.
Understanding Ragged Clouds
Ragged clouds, scientifically termed fractus clouds, come in two main forms: fractostratus and fractocumulus. These clouds don't form independently; rather, they are pieces that have broken away from larger clouds or have formed from the humid air beneath those clouds. The characteristic ragged look arises from strong winds that shear and tear at the edges of these cloud fragments.
Key Characteristics of Ragged Clouds:
| Feature | Description |
|---|---|
| Size | Small, fragmented pieces |
| Appearance | Jagged, shredded, or torn edges |
| Location | Usually found beneath larger cloud formations |
| Formation | Broken off from larger clouds or formed from humid air beneath the clouds, shaped by wind. |
| Types | Fractostratus and fractocumulus |
Formation Process:
- Breakaway: Ragged clouds can break off from larger cloud formations, like stratus or cumulus clouds, due to strong winds or other atmospheric disturbances.
- Humid Air: They can also form in the humid air located under larger cloud bases, especially where there is significant atmospheric turbulence.
- Wind Shear: The defining characteristic—their ragged appearance—is primarily caused by wind shear, which is the variation in wind speed and direction across a short distance.
Examples and Practical Insight:
- Imagine a large, solid cloud. If strong winds blow underneath, they can tear off small pieces, which then become ragged clouds.
- These clouds often appear during or after a storm, where turbulent winds are more common.
- They add an interesting visual layer to the sky, contrasting with the more solid cloud formations above.
In summary, ragged clouds are not independent cloud types but rather smaller pieces that have separated from larger clouds or formed near them. They are easily identified by their tattered edges and frequent positioning beneath larger cloud systems.
