491
FNUS76 KSTO 230356
FWSSTO

Spot Forecast for Whittle VMP...CAL FIRE
National Weather Service Sacramento CA
856 PM PDT Thu Oct 22 2026

Forecast is based on ignition time of 0838 PDT on October 23.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Mostly cloudy skies with some patchy morning fog in the morning hours
due to recent rains and cooler temperatures. Cloud coverage will
be heaviest in the morning, then by the afternoon/evening clearing
with sunshine breaking through mid-level clouds as our weather system
leaves the area. Less than a 10% chance of a lingering rain shower
Friday morning, with little to no additional accumulations expected.
Northwest winds will begin to develop in the afternoon and evening
as well with an occasional gust up to 20 mph. East to southwest winds
develop on Saturday.

.FRIDAY...

Sky/weather.........Mostly sunny. Patchy fog late in the morning.
Max temperature.....62-66.
Min humidity........62-66 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming northwest 5 to 10 mph with
                    gusts to around 22 mph in the afternoon.
 Ridgetop...........Northwest 5 to 13 mph.
Mixing height.......3600 ft AGL.
Transport winds.....Northwest 5 to 13 mph.
CWR.................7 percent.
Chance of thunder...1 percent.

TIME (PDT)      8 AM      11 AM     2 PM      5 PM
Sky cover.......MCLDY     PCLDY     MCLEAR    MCLEAR
CWR.............10        0         0         0
Chc of thdr (%).0         0         0         0
Temp............52        57        63        63
RH..............88        83        67        68
SL/VL wind......N 0G5     NW 2G8    NW 9G21   NW 9G21
Ridgetop wind...N 5       NW 9      NW 13     NW 13
Mix hgt (ft)....1100      3000      3600      1400
Transport wind..N 5       NW 9      NW 13     NW 13

.FRIDAY NIGHT...

Sky/weather.........Clear.
Min temperature.....45-49.
Max humidity........68-72 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds up to 8 mph in the evening
                    becoming light, then becoming northeast up to 5
                    mph overnight shifting to the east up to 6 mph.
 Ridgetop...........North 9 to 13 mph shifting to the east 6 to 8
                    mph late in the evening, then shifting to the
                    southeast around 7 mph early in the morning.
Mixing height.......400 ft AGL.
Transport winds.....North 9 to 13 mph shifting to the east 6 to 8
                    mph late in the evening, then shifting to the
                    southeast around 7 mph early in the morning.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6 PM      9 PM      MIDNGT    3 AM
Sky cover.......MCLEAR    CLEAR     CLEAR     CLEAR
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............62        55        52        50
RH..............69        72        69        67
SL/VL wind......NW 8G17   N 5G10    NE 5G8    E 6G10
Ridgetop wind...NW 13     N 9       NE 6      E 8
Mix hgt (ft)....1400      400       400       400
Transport wind..NW 13     N 9       NE 6      E 8

.SATURDAY...

Sky/weather.........Sunny.
Max temperature.....66-70.
Min humidity........42-46 percent.
Wind (20 ft)........
 Slope/valley.......East winds up to 5 mph early in the morning
                    becoming light, then becoming southwest up to 5
                    mph late in the afternoon becoming light.
 Ridgetop...........Southeast 6 to 7 mph shifting to the south 5 to
                    6 mph late in the morning.
Mixing height.......3300 ft AGL.
Transport winds.....Southeast 6 to 7 mph shifting to the south 5 to
                    6 mph late in the morning.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6 AM      9 AM      NOON      3 PM
Sky cover.......CLEAR     CLEAR     CLEAR     CLEAR
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............47        52        64        68
RH..............70        62        48        45
SL/VL wind......E 5G9     E 2G8     SW 2G10   SW 5G12
Ridgetop wind...SE 7      SE 6      S 6       S 5
Mix hgt (ft)....400       800       2700      3300
Transport wind..SE 7      SE 6      S 6       S 5

$$
Forecaster...JW
Requested by...Matt
Type of request...PRESCRIBED
.TAG 2624148.2/STO
.DELDT 10/23/26
.FormatterVersion 2.0.0
.EMAIL matthew.harrison@fire.ca.gov