664
FNUS76 KSTO 190334
FWSSTO
SPOT FORECAST FOR SLY PARK VMP...CAL FIRE
NATIONAL WEATHER SERVICE SACRAMENTO CA
834 PM PDT SUN OCT 18 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON OCTOBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
PATTERN CHANGE EXPECTED FOR MUCH OF THE WEEK AHEAD WITH COOLER
TEMPERATURES, HIGHER HUMIDITY AND UNSETTLED WEATHER.
TUESDAY MORNING WILL FEATURE MOSTLY DRY AND PARTLY SUNNY CONDITIONS,
THEN PRECIPITATION CHANCES WILL ENTER THE FORECAST TUESDAY AFTERNOON
WITH A SLIGHT CHANCE FOR SHOWERS. BETTER PRECIPITATION CHANCES ARE THEN
FAVORED WEDNESDAY INTO THURSDAY ALONG WITH A CHANCE OF THUNDERSTORMS.
STORM TOTAL PRECIPITATION LATE TUESDAY THROUGH THURSDAY IS CURRENTLY FORECAST
BETWEEN 0.40"-0.50". THERE IS AN 95% CHANCE OF AT LEAST A TENTH OF AN
INCH OF RAIN FROM TUESDAY PM-THURSDAY. CONFIDENCE IS HIGH ON THE OVERALL
PATTERN CHANGE, MEDIUM ON PRECIPITATION AMOUNTS AND TIMING. RH RECOVERIES
WILL SIGNIFICANTLY IMPROVE OVER THE NEXT FEW DAYS. DRIER WEATHER FRIDAY
INTO SATURDAY FOLLOWED BY ADDITIONAL SHOWER CHANCES SATURDAY NIGHT
INTO SUNDAY, ALTHOUGH THERE IS HIGHER UNCERTAINTY FOR THOSE DETAILS.
TUESDAY
SKY/WEATHER.........PARTLY SUNNY, INCREASING CLOUDS.
MAX TEMPERATURE.....64-68.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT SOUTHEAST WINDS BECOMING SOUTHWEST 5 TO 7 MPH IN
THE AFTERNOON WITH GUSTS TO 12 MPH.
RIDGETOP...........SOUTHEAST 5 TO 7 MPH IN THE MORNING BECOMING SOUTHWEST IN THE
AFTERNOON 6 TO 8 MPH WITH GUSTS TO 15 MPH.
MIXING HEIGHT.......INCREASING TO 6400 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 17 MPH.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE
EVENING, THEN CHANCE OF RAIN OVERNIGHT.
MIN TEMPERATURE.....46-50.
MAX HUMIDITY........77-82 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHEAST WINDS 4 TO 6 MPH WITH GUSTS TO 10 MPH IN THE EVENING
BECOMING LIGHT.
RIDGETOP...........EAST WINDS 5 TO 7 MPH WITH GUSTS TO 12 MPH IN THE EVENING
DECREASING OVERNIGHT.
MIXING HEIGHT.......DECREASING TO 300 FT AGL.
TRANSPORT WINDS.....EAST AROUND 8 MPH.
CWR.................20 PERCENT.
CHANCE OF THUNDER...5 PERCENT.
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN IN THE MORNING,
THEN RAIN SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....61-65.
MIN HUMIDITY........69-73 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS EXCEPT GUSTY AND ERRATIC WINDS EXPECTED
NEAR ANY THUNDERSTORMS IN THE AFTERNOON.
RIDGETOP...........EAST AROUND 5 TO 7 MPH IN THE MORNING BECOMING WEST
5 TO 8 MPH IN THE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 4300 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
CWR.................50 PERCENT.
CHANCE OF THUNDER...15 PERCENT.
FORECAST DAYS 3 THROUGH 5
THURSDAY
RAIN. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S. LIGHT WINDS.
FRIDAY
PARTLY CLOUDY. CHANCE OF RAIN. LOWS IN THE LOWER 40S. HIGHS IN
THE LOWER 60S. NORTHWEST WINDS 4 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
EAST WINDS 5 TO 10 MPH.
FORECASTER...KH
REQUESTED BY...JOSH VICKERS
TYPE OF REQUEST...PRESCRIBED
.TAG 2624001.0/STO
.DELDT 10/19/26
.FORMATTERVERSION 2.0.0
.EMAIL JOSH.VICKERS@FIRE.CA.GOV
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