Early this morning…air near the ground was cool and dry…but Gulf moisture was advancing northward just above the ground…while an upper level trough approached from the west. Numerous showers and thunderstorms had already developed in western North Texas and southwest Oklahoma. At 445 am…the strongest storms covered much of Archer County…moving east. Quarter size hail was reported with these storms near Seymour…and slightly larger hail is possible. Elsewhere…scattered thunderstorms were producing cloud to ground lightning from near Hollis to Lawton and Frederick. Showers were also developing up through western Oklahoma…and toward central Oklahoma. People may hear a few rumbles of thunder in those areas…while receiving some moderate rainfall. Severe weather will be confined to southern Oklahoma and western North Texas. Meanwhile…breezy northeast winds will feel cool…with temperatures ranging from the 40s in northwest Oklahoma…to low 60s at the Red River.