FNUS76 KSTO 051641 FWSSTO Spot Forecast for WPW Event-BTU...CAL FIRE National Weather Service Sacramento CA 941 AM PDT Tue May 5 2026 Forecast is based on forecast start time of 1000 PDT on May 08. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Warm and dry weather is expected on Friday as ridging builds aloft. Daytime minimum humidities will be lower compared to previous days, dropping into the mid 30s although values could drop into the upper 20s. Slope and valley winds will be light early, becoming southwest by late morning with gusts to 12 mph. Winds along ridgetops will be out of the west-southwest with gusts to 15 mph. Temperatures continue to warm well above-normal heading into the weekend and early next week alongside lowering RHs. Highs are forecast to be in the 90s Saturday-Tuesday, with min RHs in the mid 20s. .FRIDAY... Sky/weather.........Sunny. Chance of pcpn......0 percent. Max temperature.....81-85. Min humidity........35-39 percent. Surface winds (mph).Light winds becoming southwest up to 7 mph late in the morning with gusts to 12 mph. Wind (20 ft)........ Valley/lwr slopes..Light winds becoming southwest up to 7 mph late in the morning with gusts to 12 mph. RIDGE/UPPER SLOPE..West 10 to 15 mph shifting to the southwest late in the afternoon. Mixing height.......4000 ft AGL. Transport winds.....Southwest 5 to 7 mph shifting to the west around 6 mph late in the afternoon. Pcpn amount.........0.00 inches. TIME (PDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......MCR MCR MCR MCR CLR CLR CLR CLR Chc of pcpn (%).0 0 0 0 0 0 0 0 Temp............68 71 74 77 80 81 82 81 RH..............63 60 55 50 45 40 37 37 VL/LS wind dir..S SW SW SW S S S S VL/LS wind spd..2 5 5 5 7 7 7 5 VL/LS wind gust.3 9 9 9 12 12 12 8 Surface wnd dir.S SW SW SW S S S S Surface wnd spd.2 5 5 5 7 7 7 5 Surface wnd gst.3 9 9 9 12 12 12 8 Ridge/upslp dir.W W W W W SW SW W Ridge/upslp spd.10 10 10 15 15 15 15 15 Mix hgt (kft)...1.4 2.8 2.8 2.8 4.0 4.0 4.0 4.0 Transp wind dir.S SW SW SW SW SW SW W Transp wind spd.6 5 5 5 7 7 7 6 $$ Forecaster...KF Requested by...Battalion Chief David Acuna Type of request...OTHER .TAG 2612791.0/STO .DELDT 05/05/26 .FormatterVersion 2.0.0 .EMAIL DAVID.ACUNA@FIRE.CA.GOV