FNUS76 KOTX 061012 FWSOTX Spot Forecast for Bottom Canyon RX Unit 26...USFS National Weather Service Spokane WA 312 AM PDT Wed May 6 2026 Forecast is based on ignition time of 1000 PDT on May 06. .DISCUSSION... Breezy southwest winds will develop over the burn site this afternoon into tonight as a dry cold front passes through. The strongest winds will occur this evening with gusts up to 25 mph. Slight cooling along with an increase in relative humidity is expected with this front passage but with no precipitation. 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. CWR.................0 percent. Chance of lightning.5 percent. Max temperature.....Around 67. Min humidity........35-40 percent. Wind (20 ft)........Southwest winds 3 to 8 mph in the morning increasing to 6 to 12 mph with gusts up to 22 mph in the afternoon. Mixing height.......Increasing to 5000 feet AGL in the afternoon. Transport winds.....South 4 to 9 mph in the morning then west 10 to 15 mph in the afternoon. Ventilation Index...Low (260) increasing to high (680) in the afternoon. .TONIGHT... Sky/weather.........Partly cloudy then becoming mostly clear. CWR.................0 percent. Chance of lightning.5 percent. Min temperature.....43-46. Max humidity........77-84 percent. Wind (20 ft)........Southwest 10 to 16 mph with gusts up to 25 mph in the evening decreasing to 6 to 12 mph overnight. Mixing height.......Decreasing to 500 feet AGL by 2100. Transport winds.....Southwest 7 to 16 mph. Ventilation Index...High (518) falling to low (20). .THURSDAY... Sky/weather.........Mostly sunny. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....Around 66. Min humidity........41-46 percent. Wind (20 ft)........Southwest winds 4 to 8 mph. Mixing height.......500 feet AGL through 0800 increasing to 5500 feet AGL in the afternoon. Transport winds.....Southwest around 10 mph. Ventilation Index...High (550). $$ Forecaster...JW Requested by...Evan Ratcliffe Type of request...PRESCRIBED .TAG 2612867.0/OTX .DELDT 05/06/26 .FormatterVersion 2.0.0 .EMAIL evan.a.ratcliffe@usda.gov