 The National Weather Service in Norman has issued a severe thunderstorm warning for northwestern Grady County in central Oklahoma, east central Caddo County in southwestern Oklahoma, until 3.15 p.m. Central Daylight Time. At 2.31 p.m. Central Daylight Time, a severe thunderstorm was located near Anadarko, moving northeast at 10 miles an hour. Expected hazards include 60 miles an hour wind gusts and quarter-size hail. This is a radar-indicated threat.