766
FNUS76 KSTO 080301
FWSSTO

Spot Forecast for 818A...USFS
National Weather Service Sacramento CA
701 PM PST Fri Nov 7 2025

Forecast is based on ignition time of 0700 PST on November 08.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Mostly clear and dry conditions at the burn site this weekend and
into next week. Generally, light terrain driven winds can be
expected, with winds below 10 mph at surface level. Humidity
values will fall as we move through the weekend, as upper level
high pressure will develop and help dry the airmass and warm
temperatures slightly. The next active weather pattern arrives
by Wednesday night/Thursday morning with light showers at first,
then more consistent rain by Friday. Snow levels are expected to
initially be above 8000 feet, dropping to 7000 feet Friday night so
snow is not a concern for the burn site at this time.

.SATURDAY...

Sky/weather.........Sunny.
Max temperature.....68-72.
Min humidity........41-45 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds up to 5 mph early in the
                    morning becoming light.
 Ridgetop...........Northeast around 8 mph shifting to the south in
                    the late morning and early afternoon, then
                    shifting to the east around 2 mph late in the
                    afternoon.
Mixing height.......2100 ft AGL.
Transport winds.....East 2 to 8 mph shifting to the south 3 to 5
                    mph in the late morning and early afternoon,
                    then shifting to the east around 2 mph late in
                    the afternoon.
CWR.................0 percent.
Chance of thunder...1 percent.

TIME (PST)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Sky cover.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR
CWR.............0      0      0      0      0      0
Chc of thdr (%).0      0      0      0      0      0
Temp............49     62     68     68     66     60
RH..............56     48     41     45     55     66
SL/VL wind......NE 5   E 2    SW 2   SW 2   SW 2   NW 1
SL/VL wind gust.10     7      7      8      5      3
Ridgetop wind...NE 8   NE 8   S 5    S 3    S 3    E 2
Mix hgt (ft)....800    800    2000   2100   2100   700
Transport wind..NE 8   NE 8   S 5    S 3    S 3    E 2

.SATURDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....50-54.
Max humidity........51-55 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming northeast up to 6 mph.
 Ridgetop...........East 2 to 9 mph.
Mixing height.......600 ft AGL.
Transport winds.....East 2 to 9 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky cover.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR
CWR.............0      0      0      0      0      0
Chc of thdr (%).0      0      0      0      0      0
Temp............57     56     56     55     54     54
RH..............66     57     53     51     49     48
SL/VL wind......NW 1   NE 5   NE 6   NE 6   NE 6   NE 6
SL/VL wind gust.3      13     13     13     12     12
Ridgetop wind...E 2    NE 8   E 9    E 9    E 8    E 9
Mix hgt (ft)....700    600    700    700    800    800
Transport wind..E 2    NE 8   E 9    E 9    E 8    E 9

.SUNDAY...

Sky/weather.........Sunny.
Max temperature.....73-77.
Min humidity........32-36 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds up to 6 mph early in the
                    morning becoming light.
 Ridgetop...........Northeast around 9 mph shifting to the south
                    around 3 mph late in the morning, then shifting
                    to the west 5 to 6 mph in the afternoon.
Mixing height.......4000 ft AGL.
Transport winds.....East around 9 mph shifting to the northeast
                    early in the morning, then shifting to the
                    south around 3 mph late in the morning shifting
                    to the west 5 to 6 mph in the afternoon.
CWR.................0 percent.
Chance of thunder...1 percent.

TIME (PST)      6 AM      9 AM      NOON      3 PM
Sky cover.......MCLEAR    MCLEAR    MCLEAR    MCLEAR
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............52        64        73        70
RH..............46        38        32        46
SL/VL wind......NE 6G12   NE 5G12   E 2G6     W 2G8
Ridgetop wind...E 9       NE 9      S 3       W 5
Mix hgt (ft)....800       700       2600      4000
Transport wind..E 9       NE 9      S 3       W 5

$$
Forecaster...JW
Requested by...Sylvester Ruiz
Type of request...PRESCRIBED
.TAG 2525407.0/STO
.DELDT 11/08/25
.FormatterVersion 2.0.0
.EMAIL sylvester.ruiz@usda.gov