In Colombia, it means that it has diminished the intensity. It is an inflection of amainar does diminish, lessen, give, loosen, reduce, moderate, escampar, calm down.
BROKEN: EXHAUSTED, LOOSENED, WEAKENED, DIMINISHED.
Slowed, decreased
BROKEN IS A WAY PAST OR PAST VERB AMAINAR = CESAR OR STOP RAINING. EG: ALREADY FOR A WHILE THAT HAS BROKEN = ALREADY MAKES A SPELL THAT HAS STOPPED RAINING.
Broken: calm. Especially when in the / the sea calms the wind.