The phrase "a harbinger from" is correct and usable in written English.
It can be used to indicate that something is a sign or indication of something that is coming or about to happen, often in a negative context.
Example: "The sudden drop in temperatures was a harbinger from the harsh winter that lay ahead."
Alternatives: "a precursor of" or "an omen of".
"The notion that Mr. Falcone committed a fraud in connection with the loan from a Harbinger fund is unsupportable".
The Global Financial Crisis of 2007-08 and ongoing economic malaise may be a harbinger of the fallout from resource constraints.
A harbinger, she also took friends from the paper to the Mudd Club and Area.
Built in the early 70's to be fully occupied by Chesebrough Pond's, it was a harbinger of the corporate exodus from New York.
Environmentalists said Friday that they believed that the new terminal was a harbinger of noise and pollution from increased numbers of flights as airlines press for the creation of a third runway at Heathrow — a plan that has drawn much opposition from environmentalists.
Afterward, Haley hailed the cuts as a harbinger of what to expect from the new administration.
Ohlsson's beautifully proportioned account of the Piano Sonata No. 8 ("Pathétique") seemed a harbinger of 19th century Romanticism from its solemn opening page.
We should all be worried about a generation growing up who many no longer be able to differentiate fact and fiction – a harbinger indeed of our departure from the global stage.
But it could be a harbinger of a more significant challenge from the left to Clinton in 2008, if she decides to seek her party's presidential nomination.
But corruption in the Turks and Caicos Islands, which might soon require direct rule again from London, are a harbinger of what may happen closer to home as the crackdown on offshore tax havens gets tougher, gaining momentum from the G20 summit this week.
