The phrase "alerted early on" is correct and usable in written English.
It can be used to indicate that someone was informed or made aware of something at an early stage in a process or situation.
Example: "The team was alerted early on about the potential risks associated with the project."
Alternatives: "notified at the outset" or "informed from the beginning".
We are alerted early on, perhaps unnecessarily, that Beau's fate will probably be unhappy: in the second chapter, his mentor sends him to Hollywood with a leatherbound copy of "Coriolanus".
A publicist for "Bad Education," Jessica Uzzan, said that the director and producers had been alerted early on that this was an issue and argued it with the M.P.A.A. but that they had never considered cutting the scene.
We have previously developed Anticipatory Alarms (AA), which is a predictive tool that provides operators with anticipatory information on alarms to help them be proactive in monitoring as they are alerted early on potential problems.
One current CBC employee, who, like the rest of this story's sources, spoke to me on the condition of anonymity, said that she was alerted early on about Ghomeshi.
They are still finalising the design and layout, but alerting early testers on the site.
Those artists were alert early on to American trends, and local dealers followed suit — including Rudolf Zwirner.
An upper-level low to the northeast provided outflow, and the Joint Typhoon Warning Center issued a tropical cyclone formation alert early on July 19.
She added: "I think we need to be alerted very early on.
What's more, attuning my senses to the customs peculiar to each city neighborhood had to have alerted me early on to the perpetual clash of interests that propels a society and that sooner or later would provoke in the incipient novelist the mimetic urge.
Police had put the city on alert earlier on Monday after claiming to have intelligence of a violent threat.
A preshow welcome to "sunny Messina" (the play's setting) notwithstanding, Ms. Best's face admits to an awareness of the clouds that have informed Beatrice's relationships in the past, including whatever liaison she may once have had with Benedick: "You always end with a jade's trick," she alerts him early on.
