FNUS76 KOTX 181337 FWSOTX Spot Forecast for LESSIG HILL...DNR National Weather Service Spokane WA 637 AM PDT Sat Jul 18 2026 Forecast is based on forecast start time of 0600 PDT on July 18. .DISCUSSION... Warm, dry, and breezy weather will prevail at the fire location today. Winds will initially be light out of the south-southeast before shifting southwesterly and steadily increasing through the morning. Minimum RH values will be in the upper teens to low 20s with poor RH recoveries tonight. Similar temperatures and RH values expected Sunday, though not as breezy. If conditions become unrepresentative, contact the National Weather Service. *************************************************************** Forecasts for 20 foot wind speeds (valleys and ridge tops) are 10 minute averages reflecting RAWS wind. ***Ventilation Index is derived from transport wind multiplied by the mixing height divided by 100. Categories: low (< 200), moderate (200-500), high (500-800), and very high (> 800). *************************************************************** .TODAY... Sky/weather.........Mostly sunny. Patchy smoke. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....Around 80-83. Min humidity........17-22 percent. Wind (20 ft)........South-southeast winds 4 to 6 mph through 0800 hours, then southwest winds steadily increasing to 14 to 17 mph through 1300 hours. Gusts up to 30 mph in the afternoon. Mixing height.......4000 ft AGL increasing to 7000 ft AGL in the afternoon. Transport winds.....Southwest 12 to 19 mph. Ventilation Index...High (549) increasing to very high (1141) in the afternoon. .TONIGHT... Sky/weather.........Mostly clear. Patchy smoke. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....Around 57 to 60. Max humidity........46 to 51 percent. Wind (20 ft)........Southwest winds 9 to 13 mph with gusts to around 25 mph through about 1900 hours, then winds become become light and variable through 2300 hours. Light northeast winds 5 to 7 mph after 0100 hours. Mixing height.......6500 ft AGL falling to 500 ft AGL. Transport winds.....Southwest around 11 mph shifting to the north overnight. Ventilation Index...Very high (945) decreasing to low (25) overnight. .SUNDAY... Sky/weather.........Sunny. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....Around 84. Min humidity........16 to 21 percent. Wind (20 ft)........Light northeast winds becoming southwest 7 to 9 mph in the afternoon. Mixing height.......5000 ft AGL increasing to 8500 ft AGL in the afternoon. Transport winds.....West 8 to 10 mph. Ventilation Index...Moderate (297) increasing to very high (851) in the afternoon. $$ Forecaster...PP Requested by...Keegan Hosch Type of request...WILDFIRE .TAG 2617655.0/OTX .DELDT 07/18/26 .FormatterVersion 2.0.0 .EMAIL Tony.Adams@dnr.wa.gov,wanec@firenet.gov