Madalrõhuga

Madalrõhuga, often translated as low-pressure system, is a weather phenomenon characterized by atmospheric pressure that is significantly lower than the surrounding areas. These systems are typically associated with cloudy skies, precipitation, and often strong winds. In the Northern Hemisphere, winds around a low-pressure system generally blow counterclockwise, while in the Southern Hemisphere, they blow clockwise.

Low-pressure systems form when air rises, cools, and condenses, leading to cloud formation and precipitation. As air rises, it creates a void, which causes surrounding air to rush in, generating winds. The intensity of a low-pressure system is measured by its central pressure; the lower the central pressure, the stronger the storm and the more severe the weather can be.

Examples of low-pressure systems include extratropical cyclones and tropical cyclones (hurricanes and typhoons). Extratropical cyclones are common in mid-latitude regions and are responsible for much of the day-to-day weather experienced in these areas. Tropical cyclones form over warm ocean waters and can bring extremely heavy rainfall and destructive winds. The movement of low-pressure systems is influenced by large-scale atmospheric circulation patterns, such as the jet stream. Understanding low-pressure systems is crucial for weather forecasting and for issuing warnings about potential hazards.