022
FNUS76 KSTO 200351
FWSSTO
SPOT FORECAST FOR SOUTH GROVE RX BURN...CALIFORNIA STATE PARKS
NATIONAL WEATHER SERVICE SACRAMENTO CA
851 PM PDT MON OCT 19 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON OCTOBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A PATTERN CHANGE CONTINUES THROUGH THE WEEK WITH COOLER TEMPERATURES
AND BREEZY WINDS BRINGING INCREASED HUMIDITY LEVELS. EYE LEVEL WINDS ON
TUESDAY IN FULL SHELTERING ARE FORECAST TO REACH 3 TO 5 MPH. CLOUD COVER INCREASES
TUESDAY AHEAD OF A SYSTEM BRINGING RAIN AND THUNDERSTORM CHANCES TUESDAY
EVENING THROUGH THURSDAY. STORM TOTAL PRECIPITATION AMOUNTS ARE NOW EXPECTED TO BE
AROUND 0.50" FROM LATE TUESDAY THROUGH THURSDAY. A BRIEF TREND TOWARD DRIER
WEATHER IS THEN EXPECTED HEADING INTO THE WEEKEND WITH BREEZY NORTHEAST TO EAST
WINDS POSSIBLE ON FRIDAY INTO SATURDAY, BEFORE THE POTENTIAL FOR MORE COOL,
UNSETTLED WEATHER RETURNS EARLY NEXT WEEK.
TUESDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING MOSTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS LATE IN THE AFTERNOON.
MAX TEMPERATURE.....61-65.
MIN HUMIDITY........34-37 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS 5 TO 10 MPH WITH GUSTS 15 TO 20
MPH, BECOMING LIGHT LATE IN THE AFTERNOON.
RIDGETOP...........SOUTH TO SOUTHEAST 15 TO 25 MPH.
MIXING HEIGHT.......INCREASING TO 6500 FT AGL.
TRANSPORT WINDS.....SOUTH 16 TO 23 MPH DECREASING TO AROUND 6 MPH
LATE IN THE AFTERNOON.
CWR.................0 PERCENT THEN 10% AFTER 1700.
CHANCE OF THUNDER...0 PERCENT THEN 10% AFTER 1700.
TIME (PDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......PC PC PC PC MC CDY MC MC MC
CWR.............0 0 0 0 0 0 0 0 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 10
TEMP............54 58 60 61 63 61 61 60 57
RH..............40 39 38 37 37 40 42 44 49
SL/VL WIND DIR..SE S S S S S S S SE
SL/VL WIND SPD..7 8 8 7 7 6 5 5 1
SL/VL WIND GUST.17 22 22 21 18 17 15 12 7
RIDGE WIND DIR..S S S S S S S SE SE
RIDGE WIND SPD..16 16 23 23 23 18 18 18 6
MIX HGT (KFT)...2.7 2.7 6.5 6.5 6.5 5.6 5.6 5.6 1.9
TRANSP WIND DIR.S S S S S S S S S
TRANSP WIND SPD.16 16 23 23 23 18 18 18 12
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN WITH SLIGHT CHANCE OF THUNDERSTORMS.
MIN TEMPERATURE.....48-52.
MAX HUMIDITY........68-72 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHEAST 5 TO 7 MPH WITH GUSTS TO 15 MPH EARLY IN THE EVENING.
RIDGETOP...........EAST 6 TO 10 MPH.
MIXING HEIGHT.......DECREASING TO 400 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 6 MPH SHIFTING TO THE EAST 7 TO 9
MPH EARLY IN THE EVENING.
CWR.................10 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......MC MC MC MC MC MC MC MC MC MC MC CDY
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
CHC OF THDR (%).10 10 0 0 0 10 10 10 10 10 10 0
TEMP............56 53 53 54 53 53 52 52 52 52 52 52
RH..............54 57 56 56 56 56 57 57 58 58 59 60
SL/VL WIND DIR..SE SE NE NE NE NE NE NE E E E E
SL/VL WIND SPD..1 1 6 6 6 5 5 5 5 5 5 5
SL/VL WIND GUST.7 7 14 14 14 9 9 9 8 8 8 8
RIDGE WIND DIR..S S E E E E E E E E E E
RIDGE WIND SPD..7 7 7 7 7 7 7 7 9 9 9 9
MIX HGT (KFT)...1.9 1.9 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.S S E E E E E E E E E E
TRANSP WIND SPD.6 6 7 7 7 7 7 7 9 9 9 9
WEDNESDAY
SKY/WEATHER.........CLOUDY. RAIN SHOWERS.
CHANCE OF THUNDERSTORMS THROUGH THE DAY.
MAX TEMPERATURE.....56-60.
MIN HUMIDITY........68-72 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......EAST WINDS UP TO 6 MPH IN THE MORNING BECOMING
LIGHT. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS LATE IN THE MORNING.
RIDGETOP...........EAST TO SOUTH 7 TO 12 MPH BECOMING SOUTHWEST AFTER 1300.
MIXING HEIGHT.......INCREASING TO 3200 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 9 MPH SHIFTING TO THE SOUTH AROUND 10
MPH LATE IN THE MORNING.
CWR.................10 PERCENT INCREASING TO 50 PERCENT LATE IN THE
MORNING.
CHANCE OF THUNDER...20 PERCENT.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......CDY CDY MC MC MC MC MC MC MC MC MC MC
CWR.............10 10 10 10 10 50 50 50 50 50 50 50
CHC OF THDR (%).0 0 10 10 10 20 20 20 20 20 20 20
TEMP............50 50 50 52 54 55 56 57 56 55 53 51
RH..............64 66 67 68 69 70 72 74 78 85 94 100
SL/VL WIND DIR..E E E E E S S S SW SW SW N
SL/VL WIND SPD..5 5 6 6 6 3 3 3 3 3 3 0
SL/VL WIND GUST.8 8 12 12 12 7 7 7 8 8 8 6
RIDGE WIND DIR..E E E E E S S S SW SW SW N
RIDGE WIND SPD..9 9 8 8 8 10 10 10 10 12 12 10
MIX HGT (KFT)...0.5 0.5 0.5 0.5 0.5 3.2 3.2 3.2 2.9 2.9 2.9 2.7
TRANSP WIND DIR.E E E E E S S S S S S S
TRANSP WIND SPD.9 9 8 8 8 10 10 10 10 10 10 10
FORECAST DAYS 3 THROUGH 5
THURSDAY
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S.
HIGHS IN THE LOWER 50S. LIGHT WINDS.
FRIDAY
PARTLY CLOUDY. CHANCE OF RAIN. LOWS IN THE LOWER 40S. HIGHS IN
THE UPPER 50S. LIGHT WINDS.
SATURDAY
CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S. EAST WINDS
AROUND 6 MPH.
FORECASTER...KH
REQUESTED BY...WILLIAM GEER
TYPE OF REQUEST...PRESCRIBED
.TAG 2624109.0/STO
.DELDT 10/19/26
.FORMATTERVERSION 2.0.0
.EMAIL WILLIAM.GEER@PARKS.CA.GOV,RICHARD.RAPPAPORT@PARKS.CA.GOV,BEN.JACOBS@PARKS.CA.GOV
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