152
FNUS76 KSGX 270530
FWSSGX
SPOT FORECAST FOR 2026 FIRE PREPAREDNESS EXERCISE...CAL FIRE
NATIONAL WEATHER SERVICE SAN DIEGO CA
1030 PM PDT TUE MAY 26 2026
FORECAST IS BASED ON FORECAST START TIME OF 0800 PDT ON MAY 28.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THE DEEP MARINE LAYER SEEN SO FAR THIS WEEK PERSISTS INTO THURSDAY
AS WELL, WITH LOW CLOUDS, EXCELLENT MORNING RECOVERY (NEAR 95
PERCENT), AND PATCHY FOG EXPECTED IN THE MORNING. CLOUDS SHOULD
BREAK AROUND 1000-1100, WITH SUNNY SKIES EXPECTED INTO THE
AFTERNOON. DESPITE THIS, COOL CONDITIONS PERSIST WITH AFTERNOON
HIGHS IN THE LOW 60S, AND MINIMUM HUMIDITY DOWN TO 45-50 PERCENT.
WHILE NOT AS WINDY AS WEDNESDAY, THURSDAY WILL STILL BE QUITE
BREEZY, WITH SOUTHWESTERLY 20FT WINDS GUSTING TO 12-17 MPH IN THE
AFTERNOON HOURS. LIGHT WINDS, LOW CLOUDS, AND PATCHY FOG EXPECTED
AGAIN THURSDAY NIGHT.
THURSDAY
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
MOSTLY SUNNY (5-15 PERCENT) THEN BECOMING
PARTLY CLOUDY (25-35 PERCENT). PATCHY FOG EARLY
IN THE MORNING.
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........47 PERCENT.
20 FT WINDS (MPH)...LIGHT WINDS BECOMING WEST 5 TO 10 MPH WITH
GUSTS 12 TO 17 MPH IN THE LATE MORNING AND
AFTERNOON.
RIDGETOP...........WEST 5 TO 10 MPH INCREASING TO AROUND 15 MPH
LATE IN THE AFTERNOON.
CHANCE OF PCPN......10 PERCENT.
MIXING HEIGHT.......4300 FT AGL.
TRANSPORT WINDS.....WEST 7 TO 13 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
SNOW LEVEL..........6300-7100 FT INCREASING TO 7500-7700 FT LATE IN
THE AFTERNOON.
TIME (PDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........34 34 34 9 9 9 13 13 13 28
WEATHER COV.....PTY PTY PTY
WEATHER TYPE....FOG FOG FOG
TSTM COV........
TEMP............46 50 56 59 61 61 62 62 62 61
RH..............84 75 57 49 47 47 48 48 51 55
SURFACE WND DIR.SW SW S S SW SW W W W W
20 FT WIND SPD..4 4 4 5 7 7 7 09 10 10
20 FT WIND GST..8 10 11 11 12 13 14 16 17 17
RIDGE WIND DIR..W W SW SW W W W W W W
RIDGE WIND SPD..10 5 5 5 10 10 10 15 15 15
CHC OF PCPN (%).10 10 10 0 0 0 0 0 0 0
SNOW LVL (KFT)..6.3 6.3 6.3 7.1 7.1 7.1 7.5 7.5 7.5 7.7
FORECASTER...DAVID MUNYAN
REQUESTED BY...JOHN CLARK
TYPE OF REQUEST...OTHER
.TAG 2614531.0/SGX
.DELDT 05/26/26
.FORMATTERVERSION 2.0.0
.EMAIL JOHN.CLARK@FIRE.CA.GOV
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