Updated

A large section of the Midwest and South are at risk for strong tornadoes, severe thunderstorms and flash flooding this weekend.

The Storm Prediction Center in Norman, Okla., on Thursday advised residents to be aware that dangerous weather is on the way and to make sure that they can receive weather warnings during their weekend activities.

Strong upper-level winds are forecast to move in from the west and merge with moist air moving north from the Gulf of Mexico, creating conditions that are favorable for tornado development.

Large hail and rain of up to several inches are also expected.

The storms are forecast to start Saturday from Nebraska to Texas and move eastward through Monday.