...FIRE WEATHER WATCH IN EFFECT MONDAY AFTERNOON DUE TO WIND AND LOW RELATIVE HUMIDITY FOR A PORTION OF WY... The National Weather Service in Cheyenne WY has issued a Fire Weather Watch. * AFFECTED AREA...Fire Weather Zones 418 through 422, 427, 430, and 432. * TIMING...Monday afternoon. * WINDS...West winds 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Relative Humidity between 12 to 20 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.