…RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR SOUTH CENTRAL SOUTH DAKOTA… * AFFECTED AREA…In South Dakota…Fire weather zones 050, 052, 057, 058, 059, 063, and 064. * WIND…North winds 25 to 30 mph gusting up to 45 mph at times. * HUMIDITY…As low as 25 to 30 percent.