Science: Jet Stream for Jetliners

At New York City's International Airport one day last week, the official report was that the visibility and ceiling were unlimited, and the wind on the surface was blowing from the north at a mild 11 m.p.h. But Louis Harmantas, the Weather Bureau's chief meteorologist at the airport, had a very different report on the invisible weather six miles up. There the wind was roaring out of the south-southwest at 104 m.p.h. At the same altitude and about 100 miles east-southeast of the airport, the great jet stream itself, flanked by belts of turbulence,...

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