answersLogoWhite

0

Low pressure at the surface is usually associated with rain and high winds. A surface low is evidence of air that is rising, and rising air leads to condensation and precipitation. Air being drawn to the low gets drawn into an ever tighter circle, which leads to high winds. A tropical cyclone (called a hurricane or a typhoon, depending on where it is) is the classic example of a low pressure system. They form over warm water, which provides ample energy for intensification. Extratropical cyclones are significant events in the mid-latitudes. They usually form due to temperature differences between the pole and equator. Thunderstorm and tornado outbreaks are usually a part of extratropical cyclones. So are winter blizards. The flip side, surface highs, are usually clear because descending air is warmed, so the water vapor does not condense. They can be hot in the summer, but tend to be very cold in the winter, especially in the middle of a continent. The wind doesn't get wrapped around a high like it does around a low, so they are relatively calm.

User Avatar

Wiki User

17y ago

What else can I help you with?