OMAHA, Neb. (AP) — Weeks after historic flooding in eastern Nebraska and western Iowa forced thousands of people living along swollen rivers out of their homes, some of those residents again find themselves faced with evacuating in the wake of new flooding.

The Omaha World-Herald reports that rural and riverside residents along the Missouri River in Mills County, Iowa, were preparing this week to evacuate. In Nebraska along the Platte River, residents around Hanson Lakes just south of Bellevue were sandbagging a levee that was already being overtopped by the river.

The Plattsmouth Emergency Medical Services Department warned via its Twitter account Tuesday that the Platte and Missouri Rivers were rapidly rising around Plattsmouth.

The department advised: “If you are in an area which previously flooded a few months ago, get out NOW.”

The new flooding comes in the wake of recent heavy rains and as the U.S. Army Corps of Engineers stepped up releases from Gavins Point Dam upstream on the Missouri River.