FNUS76 KSTO 200143 FWSSTO Spot Forecast for Red Bluff VM RX...CAL FIRE National Weather Service Sacramento CA 643 PM PDT Tue May 19 2026 Forecast is based on ignition time of 0800 PDT on May 20. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Mostly sunny with light surface winds and dry conditions are expected the next several days at the burn site. High temperatures will be the warmest on Thursday, with a non-zero (5%) chance of reaching at least 100F at the burn site. Light north winds in the mornings around 5 to 7 mph at the surface; with midflame winds roughly 2-3 mph will transition to southwest winds of 6 mph at the surface, with midflame winds of 1-3 mph. Daytime humidity values should hold just above the 10% threshold on Wednesday and Thursday. Warm conditions with very dry conditions are expected through the weekend and into early next week. .WEDNESDAY... Sky/weather.........Sunny. Max temperature.....91-95. Min humidity........11-15 percent. Wind (20 ft)........ Slope/valley.......North winds 5 to 7 mph early in the morning becoming light, then becoming southeast up to 6 mph late in the afternoon. Midflame Winds.....North 2-3 mph early, southwest 2-3 mph in the late afternoon. Ridgetop...........West 6 to 12 mph. Mixing height.......7200 ft AGL. Transport winds.....North 6 to 8 mph shifting to the southwest around 6 mph late in the afternoon. CWR.................0 percent. Chance of thunder...0 percent. TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM Sky cover.......PCLDY PCLDY CLEAR CLEAR CLEAR CWR.............0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 Temp............66 77 85 90 91 RH..............40 27 19 15 13 SL/VL wind......N 6 N 6 N 3 SE 3 SE 6 SL/VL wind gust.8 8 7 7 8 Ridgetop wind...W 12 W 10 W 8 W 7 W 6 Mix hgt (ft)....1400 1400 4400 7200 7200 Transport wind..N 8 N 8 N 6 SW 6 SW 6 .WEDNESDAY NIGHT... Sky/weather.........Mostly clear. Min temperature.....59-63. Max humidity........52-56 percent. Wind (20 ft)........ Slope/valley.......Southeast winds up to 6 mph shifting to the north late in the evening. Midflame Winds.....Southwest 2-4 mph; shifting to north 2-4 mph late in the morning. Ridgetop...........West 2 to 5 mph. Mixing height.......400 ft AGL. Transport winds.....South around 6 mph shifting to the northwest 6 to 8 mph late in the evening. CWR.................0 percent. Chance of thunder...0 percent. TIME (PDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky cover.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR CWR.............0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 Temp............93 87 76 70 66 63 RH..............13 22 32 39 46 52 SL/VL wind......SE 6 SE 5 SE 5 N 5 N 6 N 6 SL/VL wind gust.8 6 6 6 7 7 Ridgetop wind...W 5 W 5 W 3 W 3 W 2 W 2 Mix hgt (ft)....4300 400 400 400 400 400 Transport wind..S 6 S 6 S 6 NW 6 N 8 N 8 .THURSDAY... Sky/weather.........Sunny. Max temperature.....95-99. Min humidity........9-13 percent. Wind (20 ft)........ Slope/valley.......North winds 5 to 6 mph in the morning becoming light, then becoming south 5 to 7 mph late in the afternoon. Midflame Winds.....North 1-3 mph in the morning; south 2 to 4 mph late in the afternoon. Ridgetop...........West 1 to 2 mph. Mixing height.......7500 ft AGL. Transport winds.....North 7 to 9 mph shifting to the southwest 7 to 8 mph late in the afternoon. CWR.................0 percent. Chance of thunder...0 percent. TIME (PDT) 6 AM 9 AM NOON 3 PM Sky cover.......PCLDY MCLEAR CLEAR CLEAR CWR.............0 0 0 0 Chc of thdr (%).0 0 0 0 Temp............62 73 89 96 RH..............54 37 20 13 SL/VL wind......N 6 N 6G7 N 3G7 S 6G9 Ridgetop wind...W 2 W 1 W 1 W 2 Mix hgt (ft)....400 800 2900 7500 Transport wind..N 8 N 9 N 7 SW 7 .FORECAST DAYS 3 THROUGH 7... .FRIDAY... Clear. Lows in the mid 60s. Highs in the upper 90s. Light winds. .SATURDAY... Clear. Lows in the lower 60s. Highs in the lower 90s. South winds around 6 mph. .SUNDAY... Mostly clear. Lows around 60. Highs in the mid 90s. South winds around 6 mph. .MEMORIAL DAY... Mostly clear. Lows in the upper 50s. Highs in the lower 90s. .TUESDAY... Mostly clear. Lows in the upper 50s. Highs in the upper 80s. $$ Forecaster...JW Requested by...RDS2 Type of request...PRESCRIBED .TAG 2613464.0/STO .DELDT 05/19/26 .FormatterVersion 2.0.0 .EMAIL Gabriel.Trull@fire.ca.gov,trang.nguyen@fire.ca.gov