...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 475 AND 476... * AFFECTED AREA...Fire Weather Zone 475 East Salmon River Mountains/Salmon NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * WINDS...Southwest 10 to 20 mph with gusts up to 30 mph. Locally high gusts are possible due to virga. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Wind and low humidity can lead to rapid spread of fire and more intense fire in receptive fuels.