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Forecasters provide specific nowcast guidance for Federal Aviation Administration air traffic controllers to use in advising pilots for flight planning and flight operations. (If you’re unfamiliar with nowcasts, see the section “Take what is happening now …” earlier in this chapter.)

Also, many of the automatic and manually operated weather stations are located near the touchdown zones of airport runways. The readings from their instruments are automatically broadcast to pilots. (See Chapter 16 for more on these and other tools of the trade.)

Using communication satellites, the National Weather Service now beams a new radio broadcast system called the World Area Forecast System to pilots of commercial airliners around the globe. This tool gives them the best information available about such things as upper-level winds and temperatures, which is crucial to aviators (and their passengers!).