This is the 7204th most frequent Catalan word.
alerten
"Alerten" means "they warn" or "they alert" in English.
Here, 'alerten' is used as a verb meaning 'warn'. It conjugates the verb 'alertar' in the third person plural present indicative, implying that meteorologists are actively communicating a warning.
Els meteoròlegs alerten d'una tempesta forta.
The meteorologists warn of a strong storm.
In this case, 'alerten' also means 'warn', referring to how news programs provide notifications or advice regarding important issues. Again, it's in the third person plural since the acting subject is 'les notícies'.
Les notícies alerten sobre els riscos del canvi climàtic.
The news broadcasts warn about the risks of climate change.
Here, 'alerten' is used to signify that the volunteers are informing or notifying others within a specific area. The meaning and form remains consistent as in prior examples.