Showers and thunderstorms will develop Sunday evening across central North Dakota, then overspread the rest of eastern North Dakota into western Minnesota by Memorial Day. Some showers and storms will produce heavy rain, with fairly widespread rainfall amounts from 1 to 2 inches possible with locally higher amounts. At this time, the area from Cooperstown to Grand Forks to Waskish should receive the higher rainfall totals. The exact track of this system is still uncertain, so this heavy rain band could shift to the north or south a bit. This heavy rain band will also be around 100 miles wide, and cover a large area. Low pressure will move out of the Rockies Sunday night then exit the region by Tuesday.
Due to some areas still having nearly saturated soils from the flooding earlier this spring, rainfall may run off and cause some rises on area rivers and streams. Ponding of water in poorly drained areas is also likely, and persons living near rivers and streams should monitor this situation. Please stay tuned to the National Weather Service to listen for updates and later statements on this heavy rain event.