229
FNUS76 KSGX 220046
FWSSGX
SPOT FORECAST FOR TUSIL INCIDENT...CAL FIRE
NATIONAL WEATHER SERVICE SAN DIEGO CA
546 PM PDT THU MAY 21 2026
FORECAST IS BASED ON FORECAST START TIME OF 1700 PDT ON MAY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HIGH PRESSURE CONDITIONS REMAIN IN PLACE, ALTHOUGH THERE WILL BE A
BREAK DOWN IN THE RIDGE WITH MORE TROUGHING UPSTREAM THAT WILL BE
ADVANCING TOWARDS THE DISTRICT OVER THE NEXT COUPLE OF DAYS. THIS
WILL ALLOW FOR THERE TO BE A BETTER SURGE OF ONSHORE FLOW BY THIS
WEEKEND WITH A GRADUAL COOLDOWN, WITH WESTERLY WINDS WITHIN THE
VALLEY INCREASING TO AROUND 10 MPH, WITH GUSTS OF 15 TO 20 MPH
DURING THE AFTERNOON AND LATE MORNING ON BOTH FRIDAY AND SATURDAY.
RIDGETOP WINDS WILL BE OUT OF THE NORTHWEST DURING THE DAY, SHIFTING
TO BEING OUT OF THE EAST OVERNIGHT. MIN RH VALUES OF AROUND 21
PERCENT ON FRIDAY WILL RECOVER QUITE WELL OVERNIGHT AND IMPROVE TO A
26% RH VALUE FOR SATURDAY AFTERNOON.
6 PM FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........21 PERCENT.
EYE LEVEL WINDS.....WEST WINDS 5 TO 10 MPH WITH GUSTS OF UP 15
MPH.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS AROUND 10 MPH WITH GUSTS OF 15 TO 20
MPH.
RIDGETOP...........NORTHWEST AROUND 5 MPH.
CWR.................0 PERCENT.
TIME (PDT) 5PM
SKY (%).........10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............73
RH..............34
20 FT WIND DIR..W
20 FT WIND SPD..9
20 FT WIND GUST.16
EYE LVL WND DIR.W
EYE LVL WND SPD.7
EYE LVL WND GST.12
RIDGE WIND DIR..NW
RIDGE WIND SPD..5
CWR.............0
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........55 PERCENT.
EYE LEVEL WINDS.....WEST WINDS 5 TO 10 MPH WITH GUSTS 10 TO 15
MPH IN THE EVENING AND OVERNIGHT BECOMING
LIGHT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 15
MPH IN THE EVENING AND OVERNIGHT BECOMING
LIGHT.
RIDGETOP...........NORTHWEST 5 TO 10 MPH SHIFTING TO THE NORTHEAST
OVERNIGHT.
CWR.................0 PERCENT.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........10 10 10 10 10 7 7 7 7 7 7 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............71 66 62 60 59 58 58 58 57 57 56 54
RH..............38 46 52 55 53 50 48 46 46 44 43 44
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..9 9 8 7 7 6 6 5 5 3 3 3
20 FT WIND GUST.15 15 14 12 11 11 9 8 8 7 6 6
EYE LVL WND DIR.W W W W W W W W W W W W
EYE LVL WND SPD.6 6 6 5 4 4 4 4 3 2 2 2
EYE LVL WND GST.11 11 10 9 8 8 7 6 6 5 5 5
RIDGE WIND DIR..NW NW NW NW N N N NE NE NE NE NE
RIDGE WIND SPD..10 10 10 10 5 5 5 5 5 5 5 5
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
SATURDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........26 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTH UP TO 5 MPH WITH
GUSTS TO AROUND 10 MPH IN THE LATE MORNING AND
EARLY AFTERNOON, THEN SHIFTING TO THE WEST 5 TO
6 MPH WITH GUSTS TO AROUND 10 MPH LATE IN THE
AFTERNOON.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING SOUTHEAST 5 TO 10
MPH WITH GUSTS TO AROUND 15 MPH IN THE LATE
MORNING AND EARLY AFTERNOON, SHIFTING TO THE
SOUTHWEST AROUND 8 MPH WITH GUSTS TO AROUND 15
MPH.
RIDGETOP...........EAST 5 TO 10 MPH SHIFTING TO THE NORTHWEST LATE
IN THE AFTERNOON.
CWR.................0 PERCENT.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........5 5 5 5 5 5 5 5 5 5 5 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............58 61 64 67 69 71 73 74 75 76 75 73
RH..............38 34 32 30 28 27 26 26 27 29 32 37
20 FT WIND DIR..W W SW SW SE E SE S S S SW W
20 FT WIND SPD..2 1 1 2 5 6 6 6 6 7 8 8
20 FT WIND GUST.5 4 4 5 8 11 12 13 14 14 14 14
EYE LVL WND DIR.W W SW SW SE E SE S S S SW W
EYE LVL WND SPD.1 1 1 1 3 4 4 4 4 5 5 6
EYE LVL WND GST.4 3 3 4 6 8 9 9 10 10 10 10
RIDGE WIND DIR..NE E E E E E E E E NE NW W
RIDGE WIND SPD..5 5 5 5 10 10 10 10 10 5 5 5
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
FORECASTER...PAUL STEWARD
REQUESTED BY...JOSH BLACK
TYPE OF REQUEST...WILDFIRE
.TAG 2614264.0/SGX
.DELDT 05/21/26
.FORMATTERVERSION 2.0.0
.EMAIL BRICE.SMITH@FIRE.CA.GOV,JOSH.BLACK@FIRE.CA.GOV
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