przelotne

"Przelotne" is a term used in Polish to describe a type of cloud formation that is often associated with the passage of a cold front. The term is derived from the verb "przelatywać," which means "to fly over." This type of cloud is characterized by its wispy, feathery appearance and is typically composed of ice crystals. Przelotne clouds are often seen in the sky during the transition between different weather systems, particularly when a warm, moist air mass is lifted over a cooler, drier air mass.

These clouds are usually high in the atmosphere, typically at altitudes between 5,000 and 12,000 meters. They are often a sign of approaching weather changes, as they can indicate the arrival of a cold front that may bring precipitation. Przelotne clouds are also known for their ability to create a halo effect around the sun or moon, known as a circumzenithal arc, which is a rare optical phenomenon.

In meteorology, przelotne clouds are classified as cirrus clouds, which are the highest and coldest of all cloud types. They are often a precursor to other types of clouds, such as altostratus or nimbostratus, which can bring more significant weather changes. Observing przelotne clouds can be an interesting way to predict upcoming weather patterns, although it is important to note that weather forecasting is a complex science and these clouds alone do not guarantee specific weather conditions.