971
FNUS76 KSGX 210926
FWSSGX
SPOT FORECAST FOR JEFF VALLEY UNIT 11B...USFS
NATIONAL WEATHER SERVICE SAN DIEGO CA
126 AM PST SAT FEB 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 PST ON FEBRUARY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THIS MORNING, EXPECT EASTERLY FLOW, SUSTAINED AT 10-15 MPH WITH
OCCASIONAL GUSTS TO 25 MPH. RH DROPS DOWN TO 30-40% AND REMAINS
STEADY OVERNIGHT INTO SUNDAY. LIGHT EASTERLY FLOW CONTINUES
THROUGH MONDAY AFTERNOON, THEN ONSHORE FLOW PICKS UP DURING THE
AFTERNOONS TUESDAY AND WEDNESDAY.
MIN RH VALUES ARE EXPECTED TO DROP DOWN TO 20-30% SUNDAY THROUGH
TUESDAY WITH MINIMAL OVERNIGHT RH RECOVERY UNTIL TUESDAY NIGHT AS
ONSHORE WINDS RETURN.
TODAY
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT) THEN BECOMING
PARTLY CLOUDY (45-55 PERCENT).
MAX TEMPERATURE.....AROUND 49.
MIN HUMIDITY........34 PERCENT.
EYE LEVEL WINDS.....EAST WINDS UP TO 7 MPH. GUSTS UP TO 15 MPH IN
THE LATE MORNING AND EARLY AFTERNOON.
WIND (20 FT)........
SLOPE/VALLEY.......EAST WINDS 10 TO 15 MPH WITH GUSTS UP TO 25
MPH IN THE MORNING DECREASING TO 5-10 MPH IN
THE AFTERNOON.
RIDGETOP...........EAST AROUND 10-20 MPH DECREASING TO 5-10 MPH
LATE IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......1300 FT AGL.
TRANSPORT WINDS.....EAST 9 TO 15 MPH.
TIME (PST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........0 1 1 1 16 16 16 23 23 23 52 52
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............35 36 38 40 42 43 44 46 47 46 45 43
RH..............47 47 44 43 44 44 43 44 41 42 43 45
20 FT WIND DIR..E E E E E E E E E E E E
20 FT WIND SPD..6 7 9 10 11 10 9 8 7 7 6 5
20 FT WIND GUST.11 11 13 15 16 16 15 15 14 12 11 11
EYE LVL WND DIR.E E E E E E E E E E E E
EYE LVL WND SPD.4 4 5 6 7 7 7 6 6 5 4 4
EYE LVL WND GST.8 8 9 11 12 12 11 11 10 9 8 8
RIDGE WIND DIR..E SE E E SE SE SE S SE SE S SE
RIDGE WIND SPD..10 10 10 15 15 15 10 10 10 5 5 5
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MIN TEMPERATURE.....AROUND 41.
MAX HUMIDITY........45 PERCENT.
EYE LEVEL WINDS.....EAST WINDS AROUND 4 MPH EARLY IN THE EVENING
BECOMING LIGHT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT EAST WINDS AROUND 3-8 MPH.
RIDGETOP...........SOUTHEAST AROUND 5-10 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......100 FT AGL.
TRANSPORT WINDS.....EAST 7 TO 10 MPH.
TIME (PST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........52 46 46 46 51 51 51 38 38 38 24 24
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............41 41 42 42 43 44 44 44 44 44 45 45
RH..............41 39 36 34 31 32 33 31 31 31 30 30
20 FT WIND DIR..E E E E E E E E E E E E
20 FT WIND SPD..3 5 3 3 5 6 6 6 6 6 6 6
20 FT WIND GUST.10 9 8 8 8 8 8 8 8 8 8 8
EYE LVL WND DIR.E E E E E E E E E E E E
EYE LVL WND SPD.4 4 3 3 3 3 3 3 3 3 3 3
EYE LVL WND GST.7 7 6 6 6 6 6 6 6 6 6 6
RIDGE WIND DIR..SE S SE SE S SE SE S SE SE S SE
RIDGE WIND SPD..5 5 5 5 5 5 5 10 5 5 5 5
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 59.
MIN HUMIDITY........28 PERCENT.
EYE LEVEL WINDS.....EAST WINDS AROUND 3 MPH.
WIND (20 FT)........
SLOPE/VALLEY.......EAST WINDS AROUND 5 MPH.
RIDGETOP...........SOUTH AROUND 5 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......2200 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 9 MPH.
TIME (PST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........24 20 20 20 9 9 9 5 5 5 9 9
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............46 46 49 51 53 54 56 57 57 56 55 53
RH..............28 29 28 29 30 30 30 31 32 32 33 33
20 FT WIND DIR..E E E E E E E E E E NE NE
20 FT WIND SPD..6 5 5 5 5 5 3 3 3 2 2 2
20 FT WIND GUST.8 9 9 10 10 10 10 10 10 9 9 9
EYE LVL WND DIR.E E E E E E E E E E E E
EYE LVL WND SPD.3 3 4 4 4 4 4 4 4 4 4 4
EYE LVL WND GST.6 7 7 7 7 7 7 7 7 7 7 7
RIDGE WIND DIR..SE S SE SE S S S S S S S SE
RIDGE WIND SPD..5 5 5 5 5 5 5 5 5 5 5 5
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
FORECAST DAYS 3 THROUGH 5
MONDAY
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE MID 60S. LIGHT
WINDS.
TUESDAY
PARTLY CLOUDY. LOWS AROUND 50. HIGHS IN THE MID 60S. LIGHT WINDS.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE MID 60S. LIGHT
WINDS.
FORECASTER...SEBASTIAN WESTERINK
REQUESTED BY...DANA BARRE
TYPE OF REQUEST...PRESCRIBED
.TAG 2602945.2/SGX
.DELDT 02/21/26
.FORMATTERVERSION 2.0.0
.EMAIL CHRISTOPHER.BRENZEL@USDA.GOV,SM.FS.CNFECC@USDA.GOV,JUAN.RODRIGUEZ6@USDA.GOV,DANA.BARRE@USDA.GOV
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