FNUS76 KSTO 161933 FWSSTO Spot Forecast for South Grove Rx Burn...California State Parks National Weather Service Sacramento CA 1233 PM PDT Fri Oct 16 2026 Forecast is based on ignition time of 0800 PDT on October 18. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Mostly sunny skies with dry conditions are in the forecast on Sunday at the burn site. humidity values will start in the low 30s to upper 20s at planned ignition time, dropping into the teens to low 20s by the early and evening. Pattern change arrives later Sunday night ushering in stronger onshore flow, cooler temperatures, and improving humidity values/recoveries. Precipitation chances look to hold off until Tuesday, where light rain showers and a couple rumbles of thunder will be possible. Stronger west wind gusts will also arrive Monday afternoon, with gusts up to 25 mph possible. .SUNDAY... Sky/weather.........Sunny. Max temperature.....69-73. Min humidity........18-22 percent. Wind (20 ft)........ Slope/valley.......East winds 5 to 7 mph early in the morning becoming light, then becoming southwest up to 6 mph late in the afternoon. Ridgetop...........Southwest 8 to 13 mph shifting to the south around 10 mph late in the afternoon. Mixing height.......6300 ft AGL. Transport winds.....East around 9 mph shifting to the southwest 8 to 10 mph late in the morning. CWR.................0 percent. Chance of thunder...0 percent. TIME (PDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......CLR CLR CLR CLR CLR CLR CLR CLR CLR CLR CWR.............0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 Temp............53 57 62 67 69 70 69 69 68 66 RH..............30 28 25 22 20 19 20 22 25 29 SL/VL wind dir..E E E SW SW SW SW SW SW W SL/VL wind spd..7 7 7 3 3 3 6 6 6 5 SL/VL wind gust.14 14 14 7 7 7 14 14 14 10 Ridge wind dir..W W SW SW SW SW SW SW SW S Ridge wind spd..13 12 9 8 8 8 8 8 9 10 Mix hgt (kft)...0.4 0.4 0.4 5.3 5.3 5.3 6.3 6.3 6.3 3.9 Transp wind dir.E E E SW SW SW SW SW SW SW Transp wind spd.9 9 9 8 8 8 10 10 10 9 .SUNDAY NIGHT... Sky/weather.........Clear. Min temperature.....50-54. Max humidity........40-44 percent. Wind (20 ft)........ Slope/valley.......West winds up to 5 mph shifting to the east up to 7 mph early in the evening. Ridgetop...........South 13 to 22 mph increasing to 24 to 29 mph overnight. Mixing height.......200 ft AGL. Transport winds.....Southwest around 9 mph shifting to the east 7 to 9 mph early in the evening. CWR.................0 percent. Chance of thunder...0 percent. TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky cover.......CLR CLR CLR CLR CLR CLR CLR CLR CLR CLR CLR CLR CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............62 58 55 54 53 53 53 53 53 53 53 53 RH..............34 38 42 43 43 42 40 38 36 35 35 35 SL/VL wind dir..W W E E E E E E E E E E SL/VL wind spd..5 5 7 7 7 5 5 5 5 5 5 5 SL/VL wind gust.10 10 14 14 14 9 9 9 7 7 7 7 Ridge wind dir..S S S S S S S S S S S S Ridge wind spd..13 14 16 17 18 20 22 24 26 28 28 29 Mix hgt (kft)...3.9 3.9 0.2 0.2 0.2 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Transp wind dir.SW SW E E E E E E E E E E Transp wind spd.9 9 7 7 7 8 8 8 8 8 8 9.MONDAY... Sky/weather.........Sunny. Max temperature.....61-65. Min humidity........29-33 percent. Wind (20 ft)........ Slope/valley.......East winds up to 6 mph shifting to the southwest up to 9 mph with gusts to around 26 mph late in the morning. Ridgetop...........South 30 to 37 mph. Mixing height.......5400 ft AGL. Transport winds.....Southeast 8 to 9 mph shifting to the south 13 to 20 mph late in the morning. CWR.................0 percent. Chance of thunder...0 percent. TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......CLR CLR MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............52 52 52 55 58 61 62 62 61 60 59 56 RH..............36 36 36 34 32 31 31 32 34 38 43 49 SL/VL wind dir..E E E E E S S S SW SW SW SW SL/VL wind spd..5 5 6 6 6 9 9 9 9 9 9 5 SL/VL wind gust.7 7 12 12 12 26 26 26 25 25 25 13 Ridge wind dir..S S S S S S S S S S S S Ridge wind spd..30 32 33 33 33 32 32 32 32 33 35 37 Mix hgt (kft)...0.5 0.5 0.5 0.5 0.5 5.4 5.4 5.4 5.4 5.4 5.4 3.0 Transp wind dir.E E SE SE SE S S S S S S S Transp wind spd.9 9 8 8 8 20 20 20 20 20 20 13 $$ Forecaster...JW Requested by...Richard Rappaport Type of request...PRESCRIBED .TAG 2623904.0/STO .DELDT 10/16/26 .FormatterVersion 2.0.0 .EMAIL Ben.Jacobs@parks.ca.gov,bjacobs111111@gmail.com,richard.rappaport@parks.ca.gov