294
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
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