976
FNUS76 KSTO 220407
FWSSTO
SPOT FORECAST FOR WHITTLE VMP...CAL FIRE
NATIONAL WEATHER SERVICE SACRAMENTO CA
907 PM PDT WED OCT 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0838 PDT ON OCTOBER 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
CLOUDY WEATHER CONTINUES NEAR THE BURN SITE ON THURSDAY, WITH AN ADDITIONAL
0.30 TO 0.50 INCHES OF RAIN EXPECTED BY THURSDAY EVENING. 50 TO 60% CHANCE
OF EXCEEDING 0.50 INCHES OVER 24 HOURS. ADDITIONALLY, THERE IS A 10 TO 20%
CHANCE FOR ISOLATED THUNDERSTORMS ON THURSDAY THROUGHOUT THE DAY, WITH
HIGHEST CHANCES THURSDAY AFTERNOON BETWEEN 11AM AND 5PM. ANY THUNDERSTORMS
WILL BRING BRIEF HEAVY RAINFALL, SMALL HAIL, LIGHTNING, AND ERRATIC/GUSTY
WINDS. FRIDAY WILL BE DRIER AND WARMER, THOUGH HUMIDITIES WILL STILL REMAIN
IN THE 60S TO 70S. WINDS WILL ALSO INCREASE ON FRIDAY, WITH NORTHERLY GUSTS
UP TO 20 MPH EXPECTED THROUGH FRIDAY EVENING. DRIER WEATHER CONTINUES THROUGH
THE WEEKEND AND INTO NEXT WEEK.
THURSDAY
SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY EARLY IN THE
MORNING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH
THE DAY. RAIN SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....59-64.
MIN HUMIDITY........81-87 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH UP TO 7 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS LATE IN THE MORNING.
RIDGETOP...........SOUTH 14 TO 18 MPH.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....SOUTH 8 TO 13 MPH.
CWR.................61 PERCENT DECREASING TO 44 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF THUNDER...18 PERCENT.
TIME (PDT) 8 AM 11 AM 2 PM 5 PM
SKY COVER.......MCLDY MCLDY MCLDY MCLDY
CWR.............60 60 60 40
CHC OF THDR (%).10 20 20 10
TEMP............55 57 59 59
RH..............87 96 90 91
SL/VL WIND......SE 3G8 SE 6G15 S 7G17 S 5G12
RIDGETOP WIND...SE 14 S 15 S 18 S 17
MIX HGT (FT)....1200 2500 2500 1400
TRANSPORT WIND..SE 9 S 13 S 10 S 8
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. RAIN LIKELY EARLY IN THE
EVENING, THEN CHANCE OF RAIN.
MIN TEMPERATURE.....52-56.
MAX HUMIDITY........89-94 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHERLY WINDS LESS THAN 5 MPH.
RIDGETOP...........SOUTH TO SOUTHWEST 5 TO 12 MPH.
MIXING HEIGHT.......800 FT AGL.
TRANSPORT WINDS.....SOUTH 6 TO 8 MPH.
CWR.................44 PERCENT DECREASING TO 5 PERCENT LATE IN THE
EVENING.
CHANCE OF THUNDER...7 PERCENT.
TIME (PDT) 6 PM 9 PM MIDNGT 3 AM
SKY COVER.......MCLDY MCLDY MCLDY MCLDY
CWR.............40 40 10 10
CHC OF THDR (%).10 0 0 0
TEMP............59 57 57 56
RH..............89 89 84 85
SL/VL WIND......S 3G8 S 2G6 S 0G6 S 0G5
RIDGETOP WIND...SW 12 S 5 S 6 S 5
MIX HGT (FT)....1400 800 900 1100
TRANSPORT WIND..S 8 S 8 S 8 SE 8
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING SUNNY.
MAX TEMPERATURE.....61-67.
MIN HUMIDITY........69-74 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST UP TO 8 MPH WITH GUSTS 15 TO 20 MPH
IN THE AFTERNOON.
RIDGETOP...........NORTHWEST 10 TO 16 MPH.
MIXING HEIGHT.......3900 FT AGL.
TRANSPORT WINDS.....SOUTHEAST UP TO 6 MPH SHIFTING TO THE NORTHWEST
7 TO 12 MPH LATE IN THE MORNING.
CWR.................3 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TIME (PDT) 6 AM 9 AM NOON 3 PM
SKY COVER.......CLOUDY MCLDY MCLDY MCLEAR
CWR.............0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............55 54 60 63
RH..............86 91 83 73
SL/VL WIND......N 0G3 N 0G6 NW 5G16 NW 8G18
RIDGETOP WIND...NW 16 NW 16 NW 14 NW 12
MIX HGT (FT)....900 1200 2600 3900
TRANSPORT WIND..S 6 SE 5 NW 7 NW 10
FORECAST DAYS 3 THROUGH 5
SATURDAY
CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 60S. LIGHT
WINDS.
SUNDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S.
LIGHT WINDS.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 70S.
LIGHT WINDS.
FORECASTER...SP
REQUESTED BY...MATT
TYPE OF REQUEST...PRESCRIBED
.TAG 2624148.1/STO
.DELDT 10/22/26
.FORMATTERVERSION 2.0.0
.EMAIL MATTHEW.HARRISON@FIRE.CA.GOV
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