Isolated showers and thunderstorms may develop by 8 PM over western Oklahoma… some of which could produce strong damaging winds. Surface analysis at 530 PM indicated a broad diffuse dry line extending north to south across far western Oklahoma. Satellite images indicate increasing cumulus cloud development near and just west of the dry line. Despite hot conditions at the surface… a capping layer of hot dry air aloft prevented storm development for most of the day. But radar indicated that showers and thunderstorms were developing quickly over West Texas as of 530 PM… from near Childress southward into The Big Bend area. Further development is also likely near the dry line in western Oklahoma through early evening. Conditions are such that any storms that form will be high based… and will be capable of producing dry microbursts with strong and perhaps damaging surface winds. Any storms early this evening are likely to weaken after sunset and dissipate quickly before nightfall.