315 FNUS76 KOTX 211233 FWSOTX Spot Forecast for Upper River...USFS National Weather Service Spokane WA 533 AM PDT Sun Sep 21 2025 Forecast is based on ignition time of 1000 PDT on September 21. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... A cold front passage today will bring a 60 percent chance of rain showers and a 15 percent chance of afternoon and evening thunderstorms. Rain amounts are expected to range between .05 to .15 inches, although higher amounts of .25 to .50 inches are possible if a thunderstorm tracks over the burn area today (15% chance). Gusty southwest winds will also occur today with gusts up to 25 mph. Drier conditions return on Monday with temperatures rebounding to well above normal readings Tuesday through the remainder of the week. .TODAY... Sky/weather.........Mostly cloudy. Chance of rain showers late in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. CWR.................20 percent. Chance of lightning.15 percent. Max temperature.....57-65. Min humidity........50-60 percent. Wind (20 ft)........Southwest winds 8 to 12 mph with gusts to around 20 mph. Gusty and erratic winds expected near thunderstorms in the afternoon. Mixing height.......Near surface through 1000 increasing to 4000 ft AGL in the afternoon. Transport winds.....Southwest 15 to 20 mph. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Rain showers likely and slight chance of thunderstorms in the evening. Haze in the evening, then areas of smoke overnight. CWR.................25 percent. Chance of lightning.15 percent. Min temperature.....40-46. Max humidity........85-95 percent. Wind (20 ft)........Southwest winds 5 to 11 mph. Gusts up to 25 mph in the evening. Gusty and erratic winds expected near thunderstorms in the evening. Mixing height.......1500 ft AGL decreasing to near surface by 2000. Transport winds.....Southwest 8 to 13 mph. .MONDAY... Sky/weather.........Mostly sunny. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....57-65. Min humidity........35-45 percent. Wind (20 ft)........Light winds becoming southwest around 5 mph in the afternoon. Mixing height.......Near surface through 1000 increasing to 4500 ft AGL in the afternoon. Transport winds.....Southwest around 7 mph. .FORECAST DAYS 3 THROUGH 7... .TUESDAY... Clear. Lows in the upper 40s. Highs 68-76. Min humidity 25-35 percent. Light terrain driven winds less than 5 mph. .WEDNESDAY... Clear. Lows in the lower 50s. Highs 74-82. Min humidity 20-30 percent. Light terrain driven winds less than 5 mph. .THURSDAY... Mostly clear. Lows in the mid 50s. Highs 76-83. Min humidity 20-25 percent. Southwest winds 5 to 10 mph. $$ Forecaster...JW Requested by...Patrick Warker Type of request...PRESCRIBED .TAG 2522257.0/OTX .DELDT 09/21/25 .FormatterVersion 2.0.0 .EMAIL kyle.mann@usda.gov,patrick.warker@usda.gov,luke.smith2@usda.gov,evan.a.ratcliffe@usda.gov,ryan.nipp@usda.gov