The heaviest rainfall is also expected to impact eastern Oklahoma and northwest Arkansas, as well as Missouri and Illinois in the Midwest, the weather service said.

About 7 million people have been warned of flooding in parts of Oklahoma, Kansas, Missouri, Arkansa and North Texas, where more than 3 inches of rain is possible through tomorrow.

This storm system is expected to weaken and move east into the Mid-Mississippi Valley on Tuesday, ending the severe weather risk for Oklahoma and shifting into Arkansas, Louisiana, Texas, the Mid-Mississippi Valley on Tuesday and the Midwest. said service.

“As the low pressure center moves rapidly northeastward over the Great Lakes Tuesday evening, the trailing cold front will weaken over time, leading to a diminishing threat of heavy rain and severe weather further east across the Mid-Mississippi Valley on Tuesday the weather service said in an update Monday morning. “Nevertheless, moderate to locally heavy rainfall with embedded thunderstorms is expected to reach the Ohio and Tennessee valleys Tuesday evening through Wednesday morning.”