(Bloomberg) -- Drought conditions widened across the U.S. as the West saw little rain even as areas east of the Mississippi River benefited from storms.

About 37.5% of the 48 contiguous states are now in drought, up from 36.9% last week, said the U.S. Drought Monitor in Lincoln, Neb. Areas covered by the two worst categories of drought were little changed at about 9.1%.

“Significant amounts of rain fell from Iowa across Minnesota, Wisconsin and into Michigan,” according to the weekly report. “The impacted areas saw improvement in Moderate Drought and Abnormal Dryness in the path of the storm. Other areas remained unchanged.”

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