From ProphecyIndex.org

 
 Prophecy:   The Dust Bowl Will Become Extremely Wet

 Name:   Hank Kunneman

 Source URL:   Click to View

 Type:   Prophecy  

 Status:    Fulfilled  

Relevant Part: Starting at around 8:30, Hank talks about an abundance of rain that will fall on the nation and water the land. It doesn't specifically mention the dust bowl area, but if the rains are hitting the entire nation, then that area will be hit too.