Jonah is a historical account that includes a mere eight words of actual prophecy (five in Hebrew), while Amos is a series of prophecies that includes a mere eight verses of history.
This mixture of historical narrative with the word of the Lord (as well as occasional visions and discussions between the Lord and the prophet) is typical of all the prophetic books of scripture. Isaiah, Ezekiel and Jeremiah each contain lengthy narrative passages, usually describing the prophet’s personal situation and/or events going on around him.