A NOAA meteorologist who spoke on the condition of anonymity for fear of retribution said the note, understood internally to be referring to Trump, came after the National Weather Service office in Birmingham contradicted Trump by tweeting Alabama would “NOT see any impacts from the hurricane.”

The Birmingham office sent the tweet after receiving a flurry of phone calls from concerned residents following Trump’s message.

The agency sent a similar message warning scientists and meteorologists not to speak out on Sept. 4, after Trump showed a hurricane map from Aug. 29 modified with a hand-drawn, half-circle in black Sharpie around Alabama.

“This is the first time I’ve felt pressure from above to not say what truly is the forecast,” the meteorologist said. “It’s hard for me to wrap my head around. One of the things we train on is to dispel inaccurate rumors and ultimately that is what was occurring — ultimately what the Alabama office did is provide a forecast with their tweet, that is what they get paid to do.”

An NWS spokesperson said, “NWS leadership sent this guidance to field staff so they (and the entire agency) could maintain operational focus on Dorian and other severe weather hazards without distraction.”

Late Friday afternoon, NOAA officials further angered scientists within and beyond the agency by releasing a statement, attributed to an unnamed agency spokesperson, supporting Trump’s claims on Alabama and chastising the agency’s Birmingham meteorologists for speaking in absolutes.

That statement set off a firestorm among scientists, who attacked NOAA officials for bending to Trump’s will.

“This looks like classic politically motivated obfuscation to justify inaccurate statements made by the boss. It is truly sad to see political appointees undermining the superb, lifesaving work of NOAA’s talented and dedicated career servant,” said Jane Lubchenco, who served as NOAA administrator under President Barack Obama.

NOAA, which oversees the National Weather Service, isn’t the first agency in the Trump administration to publicly side with the president after he has doubled down on a widely disputed claim.

But the firestorm surrounding the president’s hurricane statements is unprecedented in the organization’s history, and threatens to politicize something that most Americans take for granted as an objective, if flawed, part of daily life: the weather forecast...

NOAA’s Friday statement infuriated scientists, who worry the Trump administration is corroding faith in research and data.

“It makes me speechless that the leadership would put [Trump’s] feelings and ego ahead of putting out weather information accurately,” said Michael Halpern, a deputy director at the Union of Concerned Scientists. “If we’re politicizing the weather what is there left to politicize? We’re seeing this kind of clamp down of scientists across the government, and it’s been an escalating trend.”