Dashed lines on a Surface Analysis Chart, if depicted, indicate that the pressure gradient is

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What is the upper limit of the Low Level Significant Weather Prognostic Chart?

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The Low Level Wind Shear Alert System (LLWAS) provides wind data and software process to detect the presence of a

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What flight planning information can a pilot derive from Constant Pressure Analysis Charts?

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En route Flight Advisory Service (EFAS) is a service that provides en route aircraft with timely and meaningful weather advisories pertinent to the type of flight intended, route, and altitude. This information is received by

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