The National Weather Service in Norman has issued a Red Flag Warning for hot, dry and windy conditions which is in effect from 11 AM to 9 PM CDT Thursday. The Fire Weather Watch is no longer in effect. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 6 percent. * TEMPERATURES...Up to 98. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * SEVERITY... FUELS (ERC)...70th-89th percentile...4 (out of 5). WEATHER...Extreme...4 (out of 5). FIRE ENVIRONMENT...8 (out of 10).