Live DALLAS, PENNSYLVANIA, US Weather Conditions

Speed Shear - The component of wind shear which is due to a change in wind speed with height, e.g., southwesterly winds of 20 mph at 10,000 feet increasing to 50 mph at 20,000 feet. Speed shear is an important factor in severe weather development, especially in the middle and upper levels of the atmosphere.

Live DALLAS, PENNSYLVANIA, US Weather Conditions from Weather Station KPANORTO1

Isentropic Lift - Lifting of air that is traveling along an upward-sloping isentropic surface. Situations involving isentropic lift often are characterized by widespread stratiform clouds and precipitation.

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