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.

Also:
https://www.youtube.com/watch?v=mVCsQt1MAJE

Summary: Starting at 12:10m: God will send heavy rains on, what is presumed to be America, and will use this to bring an end to the droughts we're experiencing. The purpose of this is as a sign that God will wipe away the corruption that fills America.

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Admin Note: This may or may not affect just the dust bowl area of America, but it will certainly wipe out the droughts that America is seeing.