|
Alpine Storms
Mountain thunderstorms pose significant risks because of their consequences, especially for Mountain climbing, mountaineers, Hiking, hikers and paragliders. Despite monitoring weather conditions to prevent accidents, disasters occurring during such phenomena often remain unpredictable and are the subject of novels or other stories. Formation Thunderstorms are formed when air in a layer of the atmosphere is unstable. A parcel of air raised at the base of this layer is then warmer than the environment and rises. In rising, its temperature decreases by adiabatic expansion, and when the relative humidity of water vapor reaches saturation, this forms a convective cloud. To form a storm, this layer must be very large and the temperature at the top of the cloud must be below −20C. Mountains can help trigger atmospheric convection in three ways:. * ''direct lifting'' at the level of free convection in unstable air, lifting with a synoptic wind that arrives w/ a component perpendic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thunderstorm Over The Black Mountains - Panoramio
A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning and its acoustics, acoustic effect on the Earth's atmosphere, known as thunder. Relatively weak thunderstorms are sometimes called thundershowers. Thunderstorms occur in cumulonimbus clouds. They are usually accompanied by strong winds and often produce Heavy rain (meteorology), heavy rain and sometimes Thundersnow, snow, Ice pellets, sleet, or hail, but some thunderstorms can produce little or Dry thunderstorm, no precipitation at all. Thunderstorms may thunderstorm training, line up in a series or become a rainband, known as a squall line. Strong or #Severe thunderstorms, severe thunderstorms include some of the most dangerous weather phenomena, including large hail, strong winds, and tornadoes. Some of the most persistent severe thunderstorms, known as supercells, rotate as do cyclones. While most thunderstorms move with the mean wind flow thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
