The Storm Prediction Center in Norman, Oklahoma has included parts of the central and southern Plains in a moderate risk area this afternoon and evening, for severe thunderstorms. By late this afternoon thunderstorms are expected to rapidly intensify, and increase in areal coverage across parts of Nebraska and Iowa. The strongest thunderstorms will be capable of producing damaging wind swaths, along with large to very large hail and isolated tornadoes.
A slight risk of severe storms exists over most of western Nebraska - generally east of a line from Merriman to Ogallala through Hayes Center. Further to the east there is a moderate risk of severe thunderstorms, where the deep layer moisture is more favorable for supercell development.
Scattered thunderstorms will be increasing across western and central parts of Nebraska by late this afternoon and early this evening. As these storms move into an increasingly unstable air mass across central Nebraska - supercell thunderstorms will erupt. The initial threats will be very large hail and isolated tornadoes. These thunderstorms could assume a bowing complex structure indicative of a more widespread damaging wind event.
Please stay tuned to your local media or NOAA All Hazards Weather Radio for updated information as this event unfolds.