Showers and thunderstorms will remain active during the next several days across the nation’s southern tier, where a cold front will interact with the Southwestern monsoon circulation. During the weekend, rain may become heavy across the southern Plains, leading to 5-day totals ranging from 2 to 6 inches in northern Texas and southern Oklahoma. In parts of Arizona and New Mexico, similar totals will continue to spark flash flooding and debris flows, especially on recently burned hillsides.