FNUS76 KOTX 181426 FWSOTX Spot Forecast for Pow Wah Kee...Asotin Co. FD#1 National Weather Service Spokane WA 726 AM PDT Sat Jul 18 2026 Forecast is based on forecast start time of 0800 PDT on July 18. .DISCUSSION... Hot, dry, and breezy weather will prevail at the fire location today. Winds will initially be light this morning then increase out of the northwest this afternoon, especially after 1300-1400. 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. Areas of smoke. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....95-100. Min humidity........13-16 percent. Wind (20 ft)........North winds around 2 to 5 mph shifting to the northwest 10 to 17 mph with gusts to around 23 mph in the afternoon. Mixing height.......3500 ft AGL increasing to 5500 ft AGL in the afternoon. Transport winds.....Northwest 5 to 12 mph. Ventilation Index...Moderate (221) increasing to high (705) in the afternoon. .TONIGHT... Sky/weather.........Mostly clear. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....61-63. Max humidity........45 percent. Wind (20 ft)........West winds 10 to 17 mph. Gusts up to 23 mph in the evening...becoming west-north 4 to 8 mph after 2100. Mixing height.......4500 ft AGL falling to 500 ft AGL. Transport winds.....West 7 to 12 mph. Ventilation Index...High (635) decreasing to low (33) overnight. .SUNDAY... Sky/weather.........Mostly sunny. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....Around 93-98. Min humidity........14-17 percent. Wind (20 ft)........Northwest 1 to 4 mph becoming northwest 7 to 11 mph in the afternoon with gusts to 17 mph. Mixing height.......4000 ft AGL increasing to 6500 ft AGL in the afternoon. Transport winds.....West 6 to 12 mph. Ventilation Index...Moderate (333) increasing to high (703) in the afternoon. $$ Forecaster...MSC Requested by...Ryan Scharnhorst Type of request...WILDFIRE .TAG 2617664.0/OTX .DELDT 07/18/26 .FormatterVersion 2.0.0 .EMAIL ryan.scharnhorst@pullman-wa.gov,nbacon@asotincountywa.gov