714
FNUS76 KSGX 170125
FWSSGX
SPOT FORECAST FOR H.E.I.S.T 26-0...CAL FIRE / SAN BERNARDINO UNIT
NATIONAL WEATHER SERVICE SAN DIEGO CA
625 PM PDT THU APR 16 2026
FORECAST IS BASED ON FORECAST START TIME OF 1849 PDT ON APRIL 16.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
SEABREEZE WINDS UP TO 10 MPH THIS EVENING WILL BECOME LIGHT
OVERNIGHT. RELATIVE HUMIDITY NEAR 100% EARLY IN THE MORNING ALONG
WITH AREAS OF LOW CLOUDS. CLOUD BASES NEAR 2000 FT ELEVATION WILL
LIKELY PREVENT FOG (20% CHANCE FOG FROM 12-4 AM). WEAK SANTA ANA
WINDS PICK UP OUT OF THE NORTH AROUND SUNRISE FRIDAY WITH GUSTS
20-25 MPH THROUGH THE MORNING. RELATIVE HUMIDITY VALUES PLUMMET TO
15-20% BY EARLY AFTERNOON. SEABREEZE RETURNS BRIEFLY FRIDAY
EVENING. ALTERNATING OFFSHORE FLOW AT NIGHT AND SEABREEZE WINDS
EACH AFTERNOON ALONG WITH CLEAR SKIES THROUGH THE REST OF THE
WEEKEND.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
CLOUDY (85-95 PERCENT) THEN BECOMING MOSTLY
CLEAR (15-25 PERCENT). PATCHY FOG EARLY IN
THE MORNING.
MIN TEMPERATURE.....AROUND 51.
MAX HUMIDITY........99 PERCENT.
SURFACE WINDS (MPH).SOUTHWEST WINDS 7 TO 10 MPH EARLY IN THE
EVENING BECOMING LIGHT.
CHANCE OF PCPN......0 PERCENT.
RAINFALL AMOUNT.....0.00 INCHES.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........54 54 41 41 41 86 86 86 96 96 96 18
WEATHER COV..... PTY PTY PTY PTY
WEATHER TYPE.... FOG FOG FOG FOG
TSTM COV........
TEMP............64 60 58 56 54 54 54 53 53 52 52 51
RH..............65 77 88 94 98 97 98 99 96 95 87 82
SURFACE WND DIR.SW SW SW S S SW SE SE E NE NE NE
SURFACE WND SPD.10 9 6 4 3 3 3 3 3 3 3 3
SURFACE WND GST.17 15 12 10 8 7 7 7 7 7 7 8
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........15 PERCENT.
SURFACE WINDS (MPH).NORTH WINDS 8 TO 14 MPH WITH GUSTS TO AROUND 24
MPH SHIFTING TO THE WEST 7 TO 12 MPH WITH GUSTS
TO AROUND 18 MPH LATE IN THE AFTERNOON.
RIDGETOP...........NORTH 15 TO 20 MPH DECREASING TO AROUND 10 MPH
IN THE LATE MORNING AND AFTERNOON.
CHANCE OF PCPN......0 PERCENT.
MIXING HEIGHT.......4500 FT AGL.
TRANSPORT WINDS.....NORTH 3 TO 10 MPH SHIFTING TO THE WEST 7 TO 10
MPH LATE IN THE AFTERNOON.
RAINFALL AMOUNT.....0.00 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
SNOW LEVEL..........6400-7100 FT.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........18 18 4 4 4 3 3 3 6 6 6 1
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............51 51 55 58 63 68 72 74 76 75 75 75
RH..............71 60 46 35 25 20 15 15 20 25 30 35
SURFACE WND DIR.NE N N N N N N NW W W W W
SURFACE WND SPD.6 10 13 14 14 14 11 9 6 9 10 12
SURFACE WND GST.12 17 22 23 24 23 20 15 12 15 16 18
RIDGE WIND DIR..N N N N N N N N N N N N
RIDGE WIND SPD..20 20 15 15 10 10 10 10 10 10 10 10
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
SNOW LVL (KFT)..6.6 6.6 6.4 6.4 6.4 6.6 6.6 6.6 7.1 7.1 7.1 7.1
FORECASTER...KYLE WHEELER
REQUESTED BY...ERIK HOSTETTER BC
TYPE OF REQUEST...OTHER
.TAG 2610091.3/SGX
.DELDT 04/16/26
.FORMATTERVERSION 2.0.0
.EMAIL ERIK.HOSTETTER@FIRE.CA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page