…FLASH FLOOD WATCH NOW IN EFFECT UNTIL 10 AM CDT THIS MORNING… The Flash Flood Watch is now in effect for * Portions of northwest Iowa, southwest Minnesota, and South Dakota, including the following areas, in northwest Iowa, Dickinson, Lyon IA, O`Brien, Osceola, and Sioux. In southwest Minnesota, Cottonwood, Jackson, Lincoln MN, Lyon MN, Murray,