876
FNUS76 KSGX 202041
FWSSGX
SPOT FORECAST FOR TUSIL...CALFIRE SAN DIEGO
NATIONAL WEATHER SERVICE SAN DIEGO CA
141 PM PDT WED MAY 20 2026
FORECAST IS BASED ON FORECAST START TIME OF 1400 PDT ON MAY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
LIGHT EASTERLY WINDS THIS AFTERNOON WILL BECOME WESTERLY TONIGHT.
OTHERWISE, EXPECTING A DIURNAL WIND PATTERN THROUGH THE WEEKEND
WITH LIGHT WINDS EACH NIGHT BECOMING EASTERLY IN THE LATE
MORNINGS BEFORE TURNING WESTERLY LATER IN THE AFTERNOONS.
RELATIVE HUMIDITY WILL SLOWLY TREND HIGHER FROM NOW THROUGH THE
WEEKEND. MINIMUM AFTERNOON RH AROUND 25-30% BY SATURDAY.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........9 PERCENT.
EYE LEVEL WINDS.....EAST WINDS AROUND 4 MPH WITH GUSTS TO AROUND 11
MPH SHIFTING TO THE WEST UP TO 6 MPH LATE IN
THE AFTERNOON.
WIND (20 FT)........
SLOPE/VALLEY.......EAST WINDS AROUND 6 MPH WITH GUSTS TO AROUND 15
MPH DECREASING TO AROUND 5 MPH LATE IN THE
AFTERNOON, THEN SHIFTING TO THE WEST 6 TO 8 MPH
LATE IN THE AFTERNOON.
RIDGETOP...........NORTHEAST AROUND 0 MPH SHIFTING TO THE
NORTHWEST LATE IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......9100 FT AGL.
TRANSPORT WINDS.....EAST AROUND 6 MPH SHIFTING TO THE NORTHWEST 5
TO 7 MPH LATE IN THE AFTERNOON.
TIME (PDT) 2PM 3PM 4PM 5PM
SKY (%).........1 1 1 2
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............73 74 74 73
RH..............9 11 14 18 SHIFTING TO THE
NORTH 6 TO 8 MPH LATE IN THE AFTERNOON
20 FT WIND DIR..E E W W
20 FT WIND SPD..7 7 8 6
20 FT WIND GUST.15 13 13 12
EYE LVL WND DIR.E E W W
EYE LVL WND SPD.4 4 4 3
EYE LVL WND GST.8 7 7 6
RIDGE WIND DIR..NE NW W NW
RIDGE WIND SPD..0 0 5 5
CWR.............0 0 0 0
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....AROUND 55.
MAX HUMIDITY........26 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS UP TO 4 MPH.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 7 TO 8 MPH.
RIDGETOP...........NORTHWEST 10 TO 15 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 12 MPH.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........2 2 3 3 3 3 3 3 10 10 10 22
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............71 68 64 63 62 61 61 60 59 59 58 56
RH..............20 24 26 26 25 24 24 23 24 23 22 23
20 FT WIND DIR..W W W W W W W W W W NW NW
20 FT WIND SPD..7 7 8 8 8 7 7 7 7 7 7 7
20 FT WIND GUST.11 12 12 11 11 11 10 9 9 9 9 9
EYE LVL WND DIR.W W W W W W W W W W NW NW
EYE LVL WND SPD.4 4 4 4 4 4 4 4 4 4 4 4
EYE LVL WND GST.6 7 7 6 6 6 5 5 5 5 5 5
RIDGE WIND DIR..NW NW NW NW NW NW W NW NW NW NW NW
RIDGE WIND SPD..10 10 10 10 10 10 15 10 10 10 10 10
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........14 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING WEST UP TO 5 MPH WITH
GUSTS TO AROUND 8 MPH IN THE AFTERNOON.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING NORTHEAST 5 TO 6
MPH WITH GUSTS TO AROUND 12 MPH LATE IN THE
MORNING SHIFTING TO THE WEST 8 TO 9 MPH WITH
GUSTS TO AROUND 15 MPH.
RIDGETOP...........NORTH 5 TO 10 MPH SHIFTING TO THE NORTHEAST
AROUND 0 MPH IN THE LATE MORNING AND EARLY
AFTERNOON, THEN SHIFTING TO THE NORTHWEST LATE
IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......9700 FT AGL.
TRANSPORT WINDS.....NORTHWEST 6 TO 7 MPH SHIFTING EAST AROUND 5 MPH
IN THE LATE MORNING AND EARLY AFTERNOON, THEN SHIFTING
TO THE NORTHWEST AROUND 9 MPH.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........22 22 13 13 13 1 1 1 1 1 1 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............60 65 68 72 72 72 74 75 75 76 75 74
RH..............21 18 17 15 15 15 14 15 16 17 21 24
20 FT WIND DIR..NW NW N NE NE NE NE NE W W W W
20 FT WIND SPD..3 2 2 2 3 5 6 6 7 7 8 9
20 FT WIND GUST.7 6 6 6 8 11 12 12 14 14 15 15
EYE LVL WND DIR.NW NW N NE NE NE NE NE W W W W
EYE LVL WND SPD.2 1 1 1 2 3 3 3 4 4 4 5
EYE LVL WND GST.4 3 3 3 4 6 6 6 7 7 8 8
RIDGE WIND DIR..NW N N NE E E NE N N N NW NW
RIDGE WIND SPD..10 5 5 0 0 0 0 0 0 5 5 5
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
FORECASTER...KYLE WHEELER
REQUESTED BY...FC GERSTENBERG
TYPE OF REQUEST...WILDFIRE
.TAG 2614063.1/SGX
.DELDT 05/20/26
.FORMATTERVERSION 2.0.0
.EMAIL SDUECCCAPTAINS@FIRE.CA.GOV
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