Which figure of speech is used in this text?
The residents of Detroit will be delighted by today's forecast; they can expect another unpleasant weekend of heavy snow, sleet, and ice.

 - simile
 - verbal irony
The text uses verbal irony, which involves saying one thing but implying something very different.
Delighted shows verbal irony because the residents of Detroit are probably annoyed, not delighted, about another weekend of unpleasant weather.