The phrase "an official alert" is correct and usable in written English.
It can be used when referring to a formal notification or warning issued by an authority or organization.
Example: "The government issued an official alert regarding the severe weather conditions expected this weekend."
Alternatives: "a formal notification" or "an authorized warning".
Students could post about campus happenings and events, voice complaints, share news, and, at least in one case, update fellow classmates about weather-related closings when an official alert system had failed.
At 8 45 a.m., 40 minutes after EMA employees changed shifts and initiated the itnernal test, EMA sent out an official alert notifying residents of the false alarm.
An official alert was not given until after the contractor had died in a hospital.
In April 2010, an agency official alerted a hedge fund manager based in Texas that he should submit comments on the rules soon because "the latest on the timing" of the proposal's due date was May.
Mr. Sasso had been applying for a construction job at Kennedy Airport on Tuesday when a union official alerted the police and he was arrested, a Port Authority spokesman said.
Word of a possible radiation attack, using what officials identified as polonium 210, a highly radioactive isotope, raised fears of contamination, though many Londoners seemed to take word of the official alert with a degree of stoicism, or even indifference, on a damp Friday evening.
Relief that they are not flying to an airport given an official red alert?
In an official travel alert on Wednesday, the State Department warned United States citizens about the threats.
Years of pressure from activists and victims over rampant gender-related violence in Mexico State eventually led the government to declare an official "gender alert" in July 2015.
The investigation began in August, after a state education official alerted Mr. Condon's office to an eyebrow-raising irregularity: On algebra exams taken by Contemporary Arts students, 1,013 multiple-choice answers had been erased and changed — in 94percentt of the cases, from incorrect to correct.
A top Justice Department official alerted the White House two weeks ago that significant information requiring additional investigation would further delay the security clearance process of senior adviser Jared Kushner, according to three people familiar with the discussion.
