A few storms may be possible Monday evening into Monday night across much of Oklahoma. Return flow of modified gulf air will make its way north into OK with upper 50's F dewpoints common throughout the state. A strong cold front will sweep down from the north with a dryline mixing east. Capping will likely prevail throuhgout much of the day but some elevated hailers may form north of the front with possibly some sfc based storms are possible near the dryline-coldfront intersection.
A larger storm system will likely affect the southern plains come next Friday (15th) as a closed low tracks across the SW US. Cold air will filter in from the north while the Gulf of Mexico may open up and send plentiful moisture northward. A swath of snow/ice may develop north of the upper low while severe storms form to the south .