English Translation
The radio gave a warning of bad weather.
Could “alerta” or “alarma” also work here?
The radio gave a warning of bad weather.
Could “alerta” or “alarma” also work here?
Yes. You can change aviso with alerta or alarma.
Wouldn’t the other words indicate a different degree of severity and possible danger than “aviso”?
Yes alarma. But from the sentence you can’t tell whether it’s just bad weather or dangerous. But yes you’re right.