025
FNUS76 KSTO 140534
FWSSTO
SPOT FORECAST FOR WILLIAMS RANCH VMP...CAL FIRE
NATIONAL WEATHER SERVICE SACRAMENTO CA
934 PM PST TUE JAN 13 2026
FORECAST IS BASED ON IGNITION TIME OF 1200 PST ON JANUARY 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
DRY AND WARM WEATHER IN THE FORECAST FOR THE PLANNED IGNITION OF THE
WILLIAMS RANCH VMP. LIGHT NORTH WINDS IN THE FORECAST AS HIGH PRESSURE
OVER THE REGION FLUCTUATES IN STRENGTH AND LOCATION. DAYTIME HUMIDITY
VALUES LOOK TO BE IN THE LOW 30S ON THURSDAY BEFORE A SLIGHT INCREASE
ON FRIDAY. RAWS OBSERVATIONS FROM THE PREVIOUS FEW DAYS HAVE RECORDED
DAYTIME RH IN THE UPPER 20S TO LOW 30S, AND WITH VERY SMALL CHANGES
IN HIGH PRESSURE, FORECAST RH MAY BE RUNNING SLIGHTLY HIGH ON FRIDAY.
NO PRECIPITATION IS IN THE FORECAST FOR THE NEXT 7 DAYS AT THE
BURN SITE.
THURSDAY
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....65-69.
MIN HUMIDITY........31-35 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH WINDS 5 TO 6 MPH SHIFTING TO THE
NORTHEAST UP TO 5 MPH EARLY IN THE AFTERNOON,
THEN BECOMING LIGHT LATE IN THE AFTERNOON.
RIDGETOP...........NORTHEAST 5 TO 6 MPH.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....NORTHEAST 5 TO 6 MPH.
CWR.................0 PERCENT.
TIME (PST) 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......CLR CLR CLR CLR CLR CLR
CWR.............0 0 0 0 0 0
TEMP............63 65 66 66 65 62
RH..............44 43 44 46 48 48
SL/VL WIND DIR..N NE NE NE NE NE
SL/VL WIND SPD..6 5 5 5 3 3
SL/VL WIND GUST.8 8 8 8 5 5
RIDGE WIND DIR..NE NE NE NE NE NE
RIDGE WIND SPD..6 5 5 5 5 5
MIX HGT (KFT)...1.3 2.5 2.5 2.5 1.3 1.3
TRANSP WIND DIR.NE NE NE NE NE NE
TRANSP WIND SPD.6 5 5 5 5 5
FRIDAY
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....65-69.
MIN HUMIDITY........39-43 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS UP TO 7 MPH IN THE MORNING
BECOMING LIGHT.
RIDGETOP...........NORTH 5 TO 8 MPH SHIFTING TO THE NORTHEAST 5 TO
6 MPH IN THE AFTERNOON.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 8 MPH SHIFTING TO THE NORTHEAST 5
TO 6 MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
TIME (PST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
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
TEMP............49 49 52 55 58 61 63 65 65 65 64 62
RH..............43 42 42 42 42 42 41 42 45 48 50 50
SL/VL WIND DIR..NW NW NW NW NW NW NW NE NE NE NE NE
SL/VL WIND SPD..7 6 6 6 5 5 5 3 3 3 2 2
SL/VL WIND GUST.12 9 9 9 7 7 7 6 6 6 3 3
RIDGE WIND DIR..N N N N N N N NE NE NE NE NE
RIDGE WIND SPD..8 8 8 8 5 5 5 5 5 5 6 6
MIX HGT (KFT)...1.2 1.1 1.1 1.1 1.2 1.2 1.2 2.0 2.0 2.0 1.1 1.1
TRANSP WIND DIR.N N N N N N N NE NE NE NE NE
TRANSP WIND SPD.8 8 8 8 5 5 5 5 5 5 6 6
FORECASTER...JW
REQUESTED BY...JAN SMUTZ
TYPE OF REQUEST...PRESCRIBED
.TAG 2600064.0/STO
.DELDT 01/14/26
.FORMATTERVERSION 2.0.0
.EMAIL JAN.SMUTZ@FIRE.CA.GOV
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