370
FNUS76 KSGX 100543
FWSSGX
SPOT FORECAST FOR SPRING VALLEY LAKE FUELS PROJECT...CAL FIRE SAN BERNARDINO
NATIONAL WEATHER SERVICE SAN DIEGO CA
943 PM PST MON FEB 9 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 PST ON FEBRUARY 10.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
...WIND ADVISORY IN EFFECT FROM 1 PM TUESDAY TO 1 PM PST
WEDNESDAY...
DISCUSSION
DRY CONDITIONS AND LOW RELATIVE HUMIDITY VALUES WILL FINALLY COME
TO AN END AS A STORM SYSTEM APPROACHES. RELATIVE HUMIDITY RISES
TO NEAR SATURATION BY LATE TUESDAY EVENING AS SOUTH WINDS
STRENGTHEN AND SHOWERS APPROACH FROM THE WEST. WINDS PEAK IN
INTENSITY ON WEDNESDAY. 20 FT WINDS MAY GUST 30-40 MPH AT TIMES
FROM THE MORNING INTO THE EARLY AFTERNOON. 30% CHANCE FOR WETTING
RAIN (0.10" OR MORE) WEDNESDAY MORNING. MORE BENIGN CONDITIONS
EXPECTED FROM WEDNESDAY NIGHT ONWARD.
TUESDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). AREAS OF BLOWING
DUST EARLY IN THE AFTERNOON. SLIGHT CHANCE OF
RAIN SHOWERS LATE IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 66.
MIN HUMIDITY........34 PERCENT.
EYE LEVEL WINDS.....SOUTH WINDS AROUND 5 MPH IN THE MORNING, INCREASING
TO 10 TO 14 MPH WITH GUSTS UP TO 20 MPH IN THE
AFTERNOON.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS 5 TO 10 MPH IN THE MORNING, INCREASING
TO 20 TO 25 MPH WITH GUSTS TO AROUND 35 MPH IN THE
AFTERNOON.
RIDGETOP...........SOUTH 25 TO 30 MPH INCREASING TO SOUTHWEST 35
TO 40 MPH IN THE AFTERNOON.
CWR.................8 PERCENT.
MIXING HEIGHT.......2800 FT AGL.
TRANSPORT WINDS.....SOUTH 13 TO 17 MPH INCREASING TO 31 TO 35 MPH.
TIME (PST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........84 84 84 80 80 80 81 81 81 68 68
WEATHER COV..... ARS ARS ARS SCH SCH
WEATHER TYPE.... BDT BDT BDT RW RW
TSTM COV........
TEMP............45 50 57 62 65 65 65 65 65 62 60
RH..............65 58 45 38 34 34 35 39 40 49 52
20 FT WIND DIR..S SW SW S S S S S S S S
20 FT WIND SPD..9 7 7 7 14 17 21 22 25 22 20
20 FT WIND GUST.15 12 12 12 22 27 32 33 35 32 29
EYE LVL WND DIR.S SW SW S S S S S S S S
EYE LVL WND SPD.5 4 4 4 7 9 11 11 13 11 10
EYE LVL WND GST.8 6 6 6 11 14 16 17 20 16 15
RIDGE WIND DIR..S S S S S S S S SW SW S
RIDGE WIND SPD..25 25 30 30 30 35 35 35 35 40 35
CWR.............0 0 0 0 0 0 0 0 0 10 10
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS EARLY IN THE EVENING, THEN CHANCE
OF RAIN SHOWERS IN THE LATE EVENING AND
OVERNIGHT.
MIN TEMPERATURE.....AROUND 46.
MAX HUMIDITY........100 PERCENT.
EYE LEVEL WINDS.....SOUTH WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 15 MPH.
A LULL IN THE WINDS MAY OCCUR IN THE EARLY MORNING
HOURS.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS 10 TO 18 MPH WITH GUSTS TO AROUND 28
MPH. A LULL IN THE WINDS MAY OCCUR IN THE EARLY
MORNING HOURS.
RIDGETOP...........SOUTH 35 TO 40 MPH INCREASING TO AROUND 45 MPH
OVERNIGHT.
CWR.................8 PERCENT INCREASING TO 27 PERCENT IN THE LATE
EVENING AND OVERNIGHT.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....SOUTH 31 TO 40 MPH.
TIME (PST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........68 68 68 68 63 63 63 63 63 63 74 74
WEATHER COV.....SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........
TEMP............56 54 52 50 50 49 48 49 49 50 47 46
RH..............61 68 76 81 82 89 91 88 88 86 96 100
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..18 15 13 13 10 8 6 6 8 12 15 18
20 FT WIND GUST.27 24 20 20 16 13 11 11 14 20 25 28
EYE LVL WND DIR.S S S S S S S S S S S S
EYE LVL WND SPD.9 8 7 7 5 4 3 3 4 6 8 9
EYE LVL WND GST.14 12 10 10 8 7 6 6 7 10 13 14
RIDGE WIND DIR..S S S S S S S S S S S S
RIDGE WIND SPD..35 35 35 40 40 40 45 45 45 45 45 45
CWR.............10 10 10 10 30 30 30 30 30 30 30 30
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
PARTLY CLOUDY (45-55 PERCENT). CHANCE OF RAIN
SHOWERS.
MAX TEMPERATURE.....AROUND 59.
MIN HUMIDITY........56 PERCENT.
EYE LEVEL WINDS.....SOUTH WINDS 9 TO 14 MPH. GUSTS UP TO 20 MPH
IN THE AFTERNOON.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS 18 TO 25 MPH. GUSTS UP TO 30 MPH
INCREASING TO 37 MPH IN THE AFTERNOON.
RIDGETOP...........SOUTH 40 TO 45 MPH DECREASING TO 30 TO 35 MPH
LATE IN THE AFTERNOON.
CWR.................27 PERCENT DECREASING TO 6 PERCENT LATE IN THE
AFTERNOON.
MIXING HEIGHT.......3200 FT AGL.
TRANSPORT WINDS.....SOUTH 31 TO 40 MPH DECREASING TO 22 TO 26 MPH
LATE IN THE AFTERNOON.
TIME (PST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........74 74 74 74 66 66 66 66 66 66 36 36
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW
TSTM COV........
TEMP............52 46 47 49 55 56 58 58 52 53 58 53
RH..............81 99 99 94 77 71 65 62 74 69 56 68
20 FT WIND DIR..S S S S S S S SW SW S S S
20 FT WIND SPD..20 20 20 18 18 18 18 20 25 25 25 20
20 FT WIND GUST.30 30 30 28 28 28 28 30 35 37 35 30
EYE LVL WND DIR.S S S S S S S SW SW S S S
EYE LVL WND SPD.10 10 10 9 9 9 9 10 13 13 13 10
EYE LVL WND GST.15 15 15 14 14 14 14 15 18 20 18 15
RIDGE WIND DIR..S S S S S S S S S S S M
RIDGE WIND SPD..45 45 45 45 45 40 40 40 35 35 30 M
CWR.............30 30 30 30 20 20 20 20 20 20 10 10
FORECASTER...KYLE WHEELER
REQUESTED BY...SAN BERNARDINO ECC
TYPE OF REQUEST...PRESCRIBED
.TAG 2602274.0/SGX
.DELDT 02/09/26
.FORMATTERVERSION 2.0.0
.EMAIL JASON.MAHAN@FIRE.CA.GOV,JACK.FRANKLIN@FIRE.CA.GOV,BDUECCSTAFF@FIRE.CA.GOV
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