Cirrus clouds are high-altitude clouds that are characterized by their wispy, feathery appearance. They typically form at altitudes above 20,000 feet and are composed of ice crystals. Cirrus clouds are thin and often appear as delicate streaks across the sky.
These clouds are commonly associated with fair weather, but they can also indicate the approach of a change in the weather. In some cases, cirrus clouds may precede the arrival of a warm front or an approaching storm system.
Due to their high altitude, cirrus clouds are often illuminated by the sun even after sunset, creating beautiful and colorful displays in the sky. They are also known for their role in creating halos, arcs, and other optical phenomena.
Overall, cirrus clouds add beauty and interest to the sky, and their presence can provide valuable information about the current and future weather conditions.