The National Weather Service plans to hire hundreds of new employees, months after it lost more than 500 people to the Trump administration’s sweeping effort to reshape the federal workforce, according to the union representing the department’s meteorologists.

Tom Fahy, the union’s legislative director, said Thursday that between the cuts and other vacancies that existed at the start of the year, up to 770 empty positions at forecast offices and other departments could be filled. They include meteorologists, hydrologists, physical scientists and electronics technicians who maintain the infrastructure that delivers the nation’s forecasts.

A statement from Reps. Mike Flood, R-Neb., and Eric Sorensen, D-Ill., said the National Oceanic and Atmospheric Administration, the weather service’s pa

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