It could be, but like the verb holler, it would be colloquial and rarely seen.
"He ignored the hollered warnings and continued across the mine field."
To holler is a colloquial verb meaning to yell or shout.
Angie hollered her head off because she was so aggitated with her annoying mother.
holler means scream loudly. Example: he Hollered after his work.
hollered
whisper
No... the proper way of saying hollered is saying that you shouted a bit longer than a shout. Announcing means that you just project your voice over a crowd and tell some news or even a speech. Therefore, hollered and announced do not match definitions.
A girl that is hollered back by a guy.
The past tense is hollered.
The traffic cop hollered "Stop!".
The boy hollered "dong!", and ran down the street.
screamed harangued hollered shouted
Screamd, Crieded
Shouted, hollered, screamed, howled, wailed, cried out, called out