037
FNUS76 KSTO 150338
FWSSTO
SPOT FORECAST FOR GRCC PILES...USFS
NATIONAL WEATHER SERVICE SACRAMENTO CA
838 PM PDT TUE APR 14 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON APRIL 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A WEAK SYSTEM MOVING INTO THE AREA WILL BRING SOUTHEAST WINDS
WITH GUSTS UP TO 16 MPH WEDNESDAY AFTERNOON, WITH A SLIGHT CHANCE
OF LIGHT RAIN LATE AFTERNOON AND OVERNIGHT. DRY WEATHER AND GUSTY
NORTH TO NORTHWEST WINDS DEVELOP ON THURSDAY AS THE SYSTEM EXITS.
THE STRONGEST WINDS ARE EXPECTED LATE MORNING INTO THE AFTERNOON,
WITH GUSTS OF 25 TO 30 MPH. HUMIDITY LEVELS DROP INTO THE 20S
THURSDAY AFTERNOON. DRY WEATHER WITH ABOVE NORMAL TEMPERATURES ARE
EXPECTED FRIDAY INTO THE WEEKEND, BEFORE ADDITIONAL PRECIPITATION
CHANCES RETURN EARLY NEXT WEEK.
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY BECOMING MOSTLY CLOUDY. SLIGHT
CHANCE OF LIGHT RAIN LATE IN THE AFTERNOON.
MAX TEMPERATURE.....66-70.
MIN HUMIDITY........48-52 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS 2 TO 6 MPH BECOMING SOUTHEAST
5 TO 10 MPH WITH GUSTS 14 TO 16 MPH IN
THE AFTERNOON.
RIDGETOP...........SOUTH 7 TO 13 MPH.
MIXING HEIGHT.......3500 FT AGL.
TRANSPORT WINDS.....SOUTH 7 TO 13 MPH.
CWR.................5 PERCENT.
CHANCE OF THUNDER...8 PERCENT.
TIME (PDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MC MC MC MC MC PC PC PC PC PC PC
CWR.............0 0 0 0 0 0 0 0 0 0 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 10
TEMP............49 51 53 56 58 62 64 66 68 67 69
RH..............91 88 84 79 74 66 60 54 50 49 47
SL/VL WIND DIR..SE SE SE SE SE SE SE SE SE SE SE
SL/VL WIND SPD..2 2 3 5 6 8 8 9 10 10 9
SL/VL WIND GUST.5 5 6 9 12 14 15 16 16 16 16
RIDGE WIND DIR..SE S S S S S S S S S S
RIDGE WIND SPD..7 8 8 8 13 13 13 13 13 13 10
MIX HGT (KFT)...0.6 1.4 1.4 1.4 2.9 2.9 2.9 3.5 3.5 3.5 2.0
TRANSP WIND DIR.SE S S S S S S S S S S
TRANSP WIND SPD.7 8 8 8 13 13 13 13 13 13 10
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN.
MIN TEMPERATURE.....42-46.
MAX HUMIDITY........66-70 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST WINDS 5 TO 8 MPH SHIFTING TO THE
NORTH 5 TO 7 MPH LATE IN THE EVENING.
RIDGETOP...........SOUTHEAST 7 TO 13 MPH SHIFTING TO THE NORTHWEST
10 TO 15 MPH LATE IN THE EVENING.
MIXING HEIGHT.......600 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 13 MPH DECREASING TO 7 TO 13
MPH IN THE EVENING, THEN SHIFTING TO THE
NORTHWEST 10 TO 15 MPH LATE IN THE EVENING.
CWR.................5 PERCENT.
CHANCE OF THUNDER...8 PERCENT.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......MC MC MC MC MC PC PC PC PC PC PC MCR
CWR.............10 10 10 10 10 10 10 10 10 10 10 0
CHC OF THDR (%).10 10 10 10 10 0 0 0 0 0 0 0
TEMP............67 65 63 61 59 57 55 54 52 50 48 46
RH..............50 56 62 65 67 67 67 67 67 68 68 68
SL/VL WIND DIR..SE SE SE SE SE N N N NW NW NW NW
SL/VL WIND SPD..9 9 6 6 6 6 6 6 7 7 7 8
SL/VL WIND GUST.16 16 13 13 13 12 12 12 13 13 13 15
RIDGE WIND DIR..SE SE SE SE SE NW NW NW NW NW NW N
RIDGE WIND SPD..13 13 7 7 7 10 10 10 15 15 15 15
MIX HGT (KFT)...2.3 2.3 0.6 0.6 0.6 0.6 0.6 0.6 0.8 0.8 0.8 0.7
TRANSP WIND DIR.SE SE SE SE SE NW NW NW NW NW NW N
TRANSP WIND SPD.13 13 7 7 7 10 10 10 15 15 15 15
THURSDAY
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....65-69.
MIN HUMIDITY........22-27 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS 5 TO 15 MPH. GUSTS UP TO 27
MPH IN THE AFTERNOON.
RIDGETOP...........NORTH 15 TO 22 MPH.
MIXING HEIGHT.......4800 FT AGL.
TRANSPORT WINDS.....NORTH 14 TO 21 MPH.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MCR MCR 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............45 44 45 49 53 58 61 63 65 66 67 66
RH..............67 65 61 54 45 37 32 29 27 25 24 25
SL/VL WIND DIR..NW NW N N N NW NW NW NW NW NW NW
SL/VL WIND SPD..8 8 10 10 10 15 15 15 15 15 15 14
SL/VL WIND GUST.15 15 21 21 21 26 26 26 27 27 27 26
RIDGE WIND DIR..N N N N N N N N NW NW NW NW
RIDGE WIND SPD..15 15 14 14 14 20 20 20 18 18 18 21
MIX HGT (KFT)...0.7 0.7 1.4 1.4 1.4 4.1 4.1 4.1 4.8 4.8 4.8 3.1
TRANSP WIND DIR.N N N N N N N N NW NW NW NW
TRANSP WIND SPD.15 15 14 14 14 20 20 20 18 18 18 21
FORECASTER...EK
REQUESTED BY...JACOB KURKO
TYPE OF REQUEST...PRESCRIBED
.TAG 2610315.0/STO
.DELDT 04/15/26
.FORMATTERVERSION 2.0.0
.EMAIL JACOB.KURKO@USDA.GOV
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