Evolve

AP Photo/Cliff OwenFILE - In this Saturday, Feb. 20, 2016 file photo, National Weather Service Director Louis Uccellini speaks to the National Governors Association Winter Meeting Homeland Security and Public Safety Committee, in Washington. Uccellini, who has been the director of the National Weather Service for more than eight years, says he will retire at the end of 2021. (AP Photo/Cliff Owen)

The man behind the nation’s weather forecasting operations says farewell

Dr. Louis Uccellini has spent more than 40 years as a federal weather practitioner, first at NASA and then at the National Weather Service, where he’s…

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