Issued 400 PM EDT Fri Apr 20 2018 Valid Sat Apr 21 2018 - Mon Apr 23 2018 ...Heavy rainfall to set up over the Arklatex into the Lower Mississippi Valley and mid-South region... ...Continued dry, windy conditions will support a threat for dangerous wildfire development over southern New Mexico into far west Texas... An expansive upper low spinning over the Four Corners region will continue migration eastward during the next couple of days. As the system treks toward the south...