A night of fear turned into a morning of devastation for residents of Banshkhali as flash floods triggered by hill runoff left vast areas of the upazila submerged.Mohammad Riyad, a resident of Banshkhali village, sent the women and children of his family to relatives' homes before the flooding intensified. The men stayed behind, spending the entire night awake as the sound of collapsing mud houses echoed through the darkness."I couldn't sleep all night. All we heard was the sound of mud houses c...