797
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
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