The number 239 is the 52nd prime, and 52 is the flood number.
Notice the image with the headline shows flooding.
Recall that last year Houston (and the greater region of Texas) flooded on August 27, the 239th day of the year. Recall further, militaries being able to flood locations on command has been admitted since 1952, emphasis on '52.
Also, don't overlook those 40" of rain. 40-days and 40-nights...