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VANDENBERG AIR FORCE BASE, Calif. — An advanced U.S. weather satellite designed to improve the accuracy of extended forecasts launched early Saturday into polar orbit from California.

The Joint Polar Satellite System-1 lifted off from Vandenberg Air Force Base at 3:47 a.m. Central time atop a United Launch Alliance Delta 2 rocket.

The satellite is the first of four next-generation spacecraft for NASA and the National Oceanic and Atmospheric Administration.

Circling the Earth from pole to pole 14 times a day, the so-called JPSS-1 carries a suite of five instruments intended to make global observations that will improve forecasts of severe weather events three to seven days beforehand.

The satellite also will contribute to near-term weather forecasts, climate and ocean dynamics research, among many other uses.

Print Headline: Updated weather satellite launches

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