Excessive rainfall and isolated flash flooding is possible on Friday across the Desert Southwest.

The potential for excessive rainfall will shift eastward into the Desert Southwest on Friday as the upper level trough slowly moves eastward. Also, a cold front will be pushing southwestward toward the Four Corners region and the interaction between the upper level trough and surface front will provide the focus for heavy rainfall. A north to south line of showers and thunderstorms will develop across Eastern Arizona with rainfall totals of 0.50 and 1.00 inches will be possible with locally higher amounts in excess of 2 inches possible.

Elsewhere, a surface low will track through the Northeast, bringing widespread showers and thunderstorms along a trailing cold front. Widespread rainfall in excess of a quarter of an inch will be possible across the Northeast.