impending
adjective /ɪmˈpendɪŋ/
  /ɪmˈpendɪŋ/
[only before noun]- (usually of an unpleasant event) that is going to happen very soon synonym imminent
- his impending retirement
 - warnings of impending danger/disaster
 - They were all filled with a sense of impending doom.
 
Oxford Collocations DictionaryImpending is used with these nouns:- arrival
 - catastrophe
 - conflict
 - …