852 FNUS75 KREV 211026 FWSREV Spot Forecast for Ash Creek RX Assist...CAL FIRE/LMU National Weather Service Reno NV 326 AM PDT Sun Sep 21 2025 Forecast is based on ignition time of 0700 PDT on September 22. If conditions become unrepresentative...contact the National Weather Service in Reno. .DISCUSSION... * Dry and sunny conditions dominate through the early week, with little to no cloud cover and no precipitation expected. * Winds begin light each morning, then shift and increase during the afternoons. Strongest mixing and dispersion developing by Tuesday. * Overnight conditions will be clear and cool, with moderate humidity recoveries expected. .MONDAY... Sky/Weather.........Sunny. Temperature.........39 at ignition...Max 79-82. RH..................99% at ignition...Min 17-22%. 20-Foot Winds.......Winds northeast 2-5 mph in the morning becoming 5-8 mph with gusts to 15 mph. Chance of thunder...0%. Mixing Height.......4600-5600 ft agl. Transport Winds.....Light winds. Ventilation.........Poor in the morning becoming fair in the afternoon. TIME (PDT) 7 AM 10 AM 1 PM 4 PM Sky (%).........10 2 0 2 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 Chc of thdr (%).0 0 0 0 Temp............39 59 75 81 RH..............99 56 26 18 20 FT wind......NE 2G5 NE 2G5 NE 5G10 NE 6G15 Mx ht msl (kft).0.8 1.3 3.3 5.9 Transport wind..E 5 E 5 E 5 E 5 Vrate kt-ft/1K..5 7 20 36 Ventrate Cat....POOR POOR FAIR FAIR .MONDAY NIGHT... Sky/Weather.........Clear. Temperature.........Min 39-42. RH..................Max 56-61%. 20-Foot Winds.......Northeast winds 5-7 mph early in the evening becoming becoming east 7-10 mph with gusts to 15 mph overnight. Chc Wetting Rain....0%. Chance of thunder...0%. Mixing Height.......800-1300 ft agl. Transport Winds.....East 10-15 mph. Ventilation.........Good in the evening becoming poor overnight. TIME (PDT) 5 PM 8 PM 11 PM 2 AM Sky (%).........4 5 4 1 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 Chc of thdr (%).0 0 0 0 Temp............80 69 56 47 RH..............19 29 40 49 20 FT wind......NE 7G15 NE 6G10 E 10G15 E 9G15 Mx ht msl (kft).6.0 0.8 0.8 0.7 Transport wind..E 10 E 15 E 10 E 10 Vrate kt-ft/1K..42 8 8 6 Ventrate Cat....GOOD POOR POOR POOR .TUESDAY... Sky/Weather.........Sunny. Temperature.........Max 83-86. RH..................Min 11-16%. 20-Foot Winds.......East winds 5-8 mph in the morning becoming southeast 7-12 mph with gusts to 20 mph in the afternoon. Chc Wetting Rain....0%. Chance of thunder...0%. Mixing Height.......5900-6900 ft agl. Transport Winds.....Southeast 10-15 mph. Ventilation.........Poor in morning becoming very good in the afternoon. TIME (PDT) 5 AM 8 AM 11 AM 2 PM Sky (%).........2 6 1 1 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 Chc of thdr (%).0 0 0 0 Temp............42 44 71 82 RH..............58 58 21 14 20 FT wind......E 7G10 E 6G10 E 7G15 SE 10G20 Mx ht msl (kft).0.8 0.6 3.9 7.3 Transport wind..E 10 E 10 SE 15 SE 15 Vrate kt-ft/1K..6 4 43 88 Ventrate Cat....POOR POOR GOOD VYGD $$ Forecaster...Johnston Requested by...Larry Turman Type of request...PRESCRIBED .TAG 2522173.0/REV .DELDT 09/21/25 .FormatterVersion 2.0.0 .EMAIL larry.turman@fire.ca.gov