223
FNUS76 KSGX 171259
FWSSGX
SPOT FORECAST FOR UPPER BALDY...USFS
NATIONAL WEATHER SERVICE SAN DIEGO CA
459 AM PST WED DEC 17 2025
FORECAST IS BASED ON IGNITION TIME OF 0600 PST ON DECEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
VERY WARM TODAY AND EVEN WARMER THURSDAY. ONSHORE FLOW TODAY WILL
TURN OFFSHORE TONIGHT. THURSDAY WILL BE WARM AND DRY UNDER WEAK
OFFSHORE FLOW. THEN TURNING WEAKLY ONSHORE LATE THURSDAY.
TODAY
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 66.
MIN HUMIDITY........22 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS UP TO 7 MPH WITH GUSTS TO
AROUND 18 MPH SHIFTING TO THE NORTH AROUND 9
MPH WITH GUSTS TO AROUND 16 MPH LATE IN THE
AFTERNOON.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS 4 TO 8 MPH WITH GUSTS TO
AROUND 10 MPH EARLY IN THE MORNING, THEN
SHIFTING TO THE NORTH AROUND 12 MPH WITH
GUSTS TO AROUND 20 MPH LATE IN THE AFTERNOON.
RIDGETOP...........NORTHWEST 15 TO 20 MPH INCREASING TO AROUND 25
MPH LATE IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......1200 FT AGL.
TRANSPORT WINDS.....NORTHWEST 12 TO 21 MPH INCREASING TO AROUND 24
MPH LATE IN THE AFTERNOON.
TIME (PST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........46 20 20 20 12 12 12 9 9 9 5 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............54 54 54 56 60 64 65 66 65 63 60 58
RH..............37 39 38 36 32 30 27 24 22 23 28 32
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW N N
20 FT WIND SPD..5 6 7 6 7 8 8 9 10 11 12 12
20 FT WIND GUST.8 9 9 10 10 12 12 13 14 15 19 20
EYE LVL WND DIR.NW NW NW NW NW NW NW NW NW NW N N
EYE LVL WND SPD.4 5 6 7 7 8 8 9 9 9 9 9
EYE LVL WND GST.4 6 7 7 10 11 12 14 14 15 16 16
RIDGE WIND DIR..NW NW NW NW NW NW NW NW NW NW NW NW
RIDGE WIND SPD..15 15 15 15 20 15 15 20 15 15 25 25
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TONIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....AROUND 49.
MAX HUMIDITY........41 PERCENT.
EYE LEVEL WINDS.....NORTH WINDS 8 TO 14 MPH WITH GUSTS TO AROUND 22
MPH SHIFTING TO THE 5 TO 8 MPH WITH GUSTS TO
AROUND 13 MPH IN THE LATE EVENING AND
OVERNIGHT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH WINDS 7 TO 18 MPH WITH GUSTS TO AROUND 30
MPH DECREASING TO 7 TO 8 MPH AFTER 3 AM.
RIDGETOP...........NORTHWEST 25 TO 30 MPH BECOMING NORTH 10 TO 15
MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......100 FT AGL.
TRANSPORT WINDS.....NORTH 16 TO 25 MPH DECREASING TO 9 TO 15 MPH
OVERNIGHT.
TIME (PST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........5 4 4 4 1 1 1 3 3 3 4 4
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............55 56 54 54 54 53 53 53 53 53 51 54
RH..............40 35 33 32 30 31 31 32 32 30 32 27
20 FT WIND DIR..N N N N N N NE NE NE N N N
20 FT WIND SPD..20 18 15 12 9 9 10 12 10 9 8 7
20 FT WIND GUST.30 28 25 18 15 15 16 18 17 15 13 13
EYE LVL WND DIR.N N N N N N NE NE NE N N N
EYE LVL WND SPD.14 14 11 8 6 6 7 8 7 6 5 5
EYE LVL WND GST.22 20 18 13 11 11 12 13 12 11 9 9
RIDGE WIND DIR..NW NW NW N N N N N N N N N
RIDGE WIND SPD..25 30 20 20 25 15 15 20 10 10 15 10
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........24 PERCENT.
EYE LEVEL WINDS.....NORTH WINDS UP TO 5 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING WEST AROUND 4 MPH
LATE IN THE AFTERNOON.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH WINDS AROUND 7 MPH DECREASING TO 5 TO 7
MPH EARLY IN THE MORNING, THEN BECOMING LIGHT
IN THE LATE MORNING AND EARLY AFTERNOON
BECOMING WEST AROUND 5 MPH LATE IN THE
AFTERNOON.
RIDGETOP...........NORTHWEST 5 TO 10 MPH BECOMING AROUND 5 MPH IN
THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......1300 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 9 MPH SHIFTING TO THE WEST 2 TO 5
MPH IN THE LATE MORNING AND AFTERNOON.
TIME (PST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........4 6 6 6 24 24 24 15 15 15 23 23
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............55 55 56 59 64 69 70 71 70 68 66 64
RH..............24 24 26 27 27 26 26 28 31 34 36 36
20 FT WIND DIR..N N N NW NW NW W W W W W W
20 FT WIND SPD..7 7 6 5 3 2 3 3 3 3 5 5
20 FT WIND GUST.12 12 11 8 6 6 6 7 7 8 8 9
EYE LVL WND DIR.N N N NW NW NW W W W W W W
EYE LVL WND SPD.5 5 4 3 2 1 2 2 2 3 3 4
EYE LVL WND GST.9 9 8 6 5 5 5 5 5 6 6 7
RIDGE WIND DIR..N N NW NW NW NW NW NW NW NW NW W
RIDGE WIND SPD..10 10 10 5 5 5 5 5 5 5 5 5
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
FORECASTER...MIGUEL MILLER
REQUESTED BY...ART LOZANO
TYPE OF REQUEST...PRESCRIBED
.TAG 2527625.3/SGX
.DELDT 12/17/25
.FORMATTERVERSION 2.0.0
.EMAIL ARTURO.LOZANO@USDA.GOV
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