At 711 pm cdt, a severe thunderstorm was located 5 miles southwest of duke, moving east at 20 mph (radar indicated). Hazards include tennis ball size hail and 70 mph wind gusts. People and animals outdoors will be injured. expect hail damage to roofs, siding, windows, and vehicles. expect considerable tree damage. wind damage is also likely to mobile homes, roofs, and outbuildings. locations impacted include, altus, hollis, tipton, blair, olustee, eldorado, martha, gould, elmer, headrick, friendship, altus air force base, duke, warren, humphreys, hester, mcqueen, mcknight and hess. thunderstorm damage threat, considerable hail threat, radar indicated max hail size, 2. 50 in wind threat, radar indicated max wind gust, 70 mph.