* AFFECTED AREA. Fire Weather Zone 204 Eastern Panhandle/Crescent Lake NWR, Fire Weather Zone 206 Sandhills/Valentine NWR/Nebraska National Forest, Fire Weather Zone 208 Niobrara Valley/Fort Niobrara NWR/Samuel R McKelvie National Forest and Fire Weather Zone 210 Frenchman Basin. * TIMING. Through 8 PM CDT / 7 PM MDT Saturday. * WINDS. North 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY. As low as 15 to 20 percent * TEMPERATURES. Highs in the upper 70s to lower 80s. * LIGHTNING. None expected. * IMPACTS. Any fire starts may spread rapidly and become very difficult to control.