Angry outburst observed on the radio? (5)
I believe the answer is:
scene
'angry outburst' is the definition.
(as in making a scene)
'observed on the radio?' is the wordplay.
'observed' becomes 'seen' ('seen' can be a synonym of 'observed').
'on the radio?' indicates a 'sounds like' (homophone) clue (I've seen 'on the radio' mean this).
'seen' is a homophone of 'SCENE'.
(Other definitions for scene that I've seen before include "Histrionic incident" , "where crime was committed" , "site" , "Panorama" , "Place of an event - of the crime?" .)