PHYS111 Study Guide - Quiz Guide: Wind Shear, Downburst, Thunderstorm
Document Summary
Wind shear is sudden tearing or shearing effect encountered along the edge of a zone inn which there is a violet change in wind speed or direction. In cruising flight, wind shear is encountered in the transition zone between the pressure gradient and the disoriented local winds at the local levels. Wind shear is usually a problem in the fronts with steep pressure gradients. If the temperature difference across the front is 5"c or more and if the front is moving at a speed of 30 knots or more. Frontal wind shear is associated with the fast moving fronts but can be also present ion the warm front too. Low level wind shear is associated with the. Low level wind shear thunderstorms, occurs as the result of two phenomenons, the gust and the. As the thunderstorm matures, a strong downdraft develops, strikes the surface and spread horizontally well in advance of thunderstorms itself.
