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SITUATIONS IN WHICH WIND CAN WARM THE WEATHER

METEOROLOGIST JEFF HABY

There are several situations in which the wind can warm the weather. One situation is a warm air advection pattern. This is the horizontal movement of warmer air into the forecast area. An example is the air flow behind a warm front. A wind blowing from a warm location will help warm the weather at another place. Another situation in which the wind can warm the weather is a downsloping flow. Air warms at the dry adiabatic lapse rate when it sinks. Air that flows from a higher elevation toward a lower elevation will experience a downsloping flow. Downsloping wind can result in a rapid warm-up of the weather. An example is the Chinook wind. Another situation in which the wind can warm the weather is a dry downdraft. Typically downdrafts cool the weather due to evaporative cooling and cold air aloft being brought down to the surface. If the air is dry and sinks through a large depth of the troposphere, enough warming can result that when this air strikes the surface it can warm the weather at the surface. These situations are not too common through. An example is a heat burst resulting from a downdraft from a dissipated thunderstorm.