WWUS83 KUNR 190043 RFWUNR URGENT - FIRE WEATHER MESSAGE National Weather Service Rapid City SD 643 PM MDT Wed Mar 18 2026 ...ELEVATED FIRE WEATHER CONDITIONS WILL PERSIST OVERNIGHT GIVEN POOR HUMIDITY RECOVERY... SDZ321-322-325-326-WYZ314-315-317-190145- /O.EXP.KUNR.FW.W.0006.000000T0000Z-260319T0100Z/ Southern Black Hills-Fall River County Area-Custer County Plains- Pine Ridge Area-Northern Campbell-Southern Campbell- Weston County Plains- 643 PM MDT Wed Mar 18 2026 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 314, 315, 317, 321, 322, 325, AND 326... Very dry conditions will linger through the evening hours, although winds will diminish after 1900-2000 hours. Overnight relative humidity recover will be poor, especially across the southern Black Hills, portions of northeastern Wyoming, the foothills, and southwestern South Dakota. Overnight RH recovery around 40 to 50 percent, resulting in prolonged elevated fire weather conditions overnight. $$