At least 1 million acres (405,000 hectares) of U.S. farmland were flooded after the "bomb cyclone" storm left wide swaths of nine major grain-producing states under water in March, satellite data analyzed by Gro Intelligence showed.

Farms from the Dakotas to Missouri and beyond have been under water for a week or more, possibly impeding planting and damaging soil. The floods, which came just weeks before planting season starts in the Midwest, will likely reduce corn, wheat and soy production this year.

"There's thousands of acres that won't be able to be planted," Ryan Sonderup, 36, of Fullerton, Nebraska, who has been farming for 18 years, said in a recent interview.