As red flag warnings crop up across wide swathes of West and North Texas this week, a section east of Dallas-Fort Worth could see another kind of risk on Wednesday afternoon: punishing severe storms.

A “potent” weather system will enter North and Central Texas on Wednesday, steering the development of a dryline, according to the National Weather Service Fort Worth. A dryline is the boundary separating dry and moist air masses, where severe thunderstorms often develop.

Four people are injured after severe storms rolled through North Texas, officials say. Ellis County officials confirmed the injuries. There is no information about their identities or conditions. The Ennis Police Department also confirmed the east-facing wall of a grocery store was knocked down due to the strong winds.