FNUS76 KOTX 060811 FWSOTX Spot Forecast for North Siwash RX...USDA Forest Service National Weather Service Spokane WA 111 AM PDT Wed May 6 2026 Forecast is based on ignition time of 0600 PDT on May 06. .DISCUSSION... Warm conditions remain in place today however humidity values will be increasing through the afternoon with the arrival of a dry cold front. Lowest humidity values dip around 1300 hrs then begin to slowly rise. The incoming front will deliver increasing westerly winds to the ridgetop with moderate sheltering mid to lower slope given the east aspect. Anticipate the winds to mix down to the lower slopes at times 1600-2200. Winds remain elevated on the ridgetops overnight but look to decouple lower to mid slopes. Cumulus clouds will develop today with a 5-10% chance for a shower. Lighter winds, cooler temperatures, and higher humidity for Thursday. 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. *************************************************************** .TODAY... Sky/weather.........Mostly sunny becoming partly cloudy. Chance of lightning.0 percent. Max temperature.....65. Min humidity........38-42 percent increasing 45-48% by 1700 hrs. Wind (20 ft)........Variable to upslope winds 1 to 4 mph becoming west 5 to 8 mph with gusts to around 16 mph after 1300. Ridgetops: West 4 to 7 mph increasing west 10 to 15 mph gusts 20 mph after 1300. Mixing height.......6500 ft AGL in the afternoon between 1300-1500. Transport winds.....Southwest 5 mph becoming west 16 mph after 1300. .TONIGHT... Sky/weather.........Mostly cloudy then becoming mostly clear. Chance of lightning.5 percent. Min temperature.....42. Max humidity........71-76 percent. Wind (20 ft)........West winds 6 to 9 mph gusts 18 mph becoming southwest 4 to 7 mph after 0100. Ridgetops 12 to 18 mph gusts 25 mph becoming southwest 8 to 13 mph after midnight. Mixing height.......4000 ft AGL falling to near surface overnight. Transport winds.....Southwest 12 to 14 mph. .THURSDAY... Sky/weather.........Mostly sunny. Max temperature.....61. Min humidity........42-47 percent. Wind (20 ft)........West winds 4 to 9 mph gusts to 14 mph in the afternoon. Mixing height.......4500 ft AGL in the afternoon. Transport winds.....West 12 to 14 mph. $$ Forecaster...SB Requested by...Captain 21 Type of request...PRESCRIBED .TAG 2612874.0/OTX .DELDT 05/06/26 .FormatterVersion 2.0.0 .EMAIL richard.lyons@usda.gov,justin.colvin@usda.gov,will.dalby@usda.gov,jerrod.scheffelmaier@usda.gov,megan.primmer@usda.gov