Dark clouds are often a clear indicator of changes in the weather. Throughout history, humans have learned to interpret their formation and evolution to predict phenomena such as heavy rain, storms and even hurricanes. But what do they really tell us about the climate and what types of clouds should we pay more attention to?
In this article we will explore the characteristics of storm clouds, how they form, what types exist and what signals they can give us about the weather. We will also analyze how the cloud density at their color and why some seem more threatening than others.
Why are storm clouds dark?
The dark color of storm clouds is due to their density and size. Clouds are made up of water droplets and ice crystals that reflect sunlight in all directions. When a cloud is thin, light can easily pass through it, giving it its characteristic white color. However, when the cloud is thick and filled with water, blocks the passage of light, generating shadows on its underside and making it appear darker from the Earth's surface.
Furthermore, Higher or heavier clouds can block sunlight more efficiently., making the lower layers look even darker. However, when viewed from above, they would still have white tones, due to the reflection of light.
Types of storm clouds
There are several types of clouds capable of generating storms, but the most frequent are:
- Cumulonimbus: These are the quintessential storm clouds. They are characterized by their great vertical development and can reach heights of more than 10 kilometers. They are responsible for showers and thunderstorms.
- Altocumulus castellanus: These clouds have an irregular appearance with tower-like shapes at the top. Their presence is a clear indication of atmospheric instability and the possible formation of storms in the coming hours.
- Nimbostratus: Although not always associated with severe thunderstorms, these dense, greyish clouds are responsible for prolonged, continuous rainfall.
Cloudy signs that indicate a change in weather
Since ancient times, cloud observation has been key to predicting the weather. Some important clues are:
- Cirrus clouds moving across the sky: They are usually precursors of the arrival of a warm front and possible rain in 24-36 hours.
- Altocumulus floccus: These small, rounded clouds can indicate instability and the formation of storms.
- Cumulonimbus formation: If these clouds develop rapidly, it is a sign of an impending storm.
The effects of storms on the climate
Storms not only bring rain and strong winds, but can also affect temperature and air quality. The passage of a storm usually generates a drop in temperature., as cold air descends rapidly from the top of the cloud.
In addition, phenomena such as Ray and electrical discharges can generate changes in the ionization of the air, affecting even sensitive people who suffer from headaches before a storm.
Understanding the formation and characteristics of storm clouds is key to anticipating weather changes. Observing different types of clouds and their evolution in the sky allows us to better prepare for adverse weather events. By paying attention to the signals given by clouds, we can know more precisely when to expect rain, storms or even more severe storms.