Saturday is an appetizer day as a dryline sharpens in West Texas. A jet stream dip/disturbance starts to approach. A couple supercells with egg-sized hail are possible. They'll congeal into a windy line overnight.
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Sunday the atmosphere resets, becoming warm and humid once again and allowing additional supercells to form. Hail up to apple size is possible, in addition to a tornado threat.
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Monday the risk area expands all the way up to the northern Mississippi Valley. A few tornadoes, as well as large hail, are likely. Some of the supercells may be intense, especially in Kansas.
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