333
FNUS76 KSTO 030040
FWSSTO

Spot Forecast for Root...USFS
National Weather Service Sacramento CA
540 PM PDT Tue Sep 2 2025

Forecast is based on forecast start time of 0600 PDT on September 03.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Continued warm weather with marginal increases in
Min RH trends into the 20s and 30s. Diurnal, terrain driven winds
forecasted with breezy afternoon winds outside of any gusty winds
from thunderstorms. Thunderstorm activity is expected to remain
far east of the fire with lowering chances each day.

.WEDNESDAY...

Sky/weather.........Sunny. Areas of smoke.
Max temperature.....89-93.
Min humidity........20-24 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming south 5 to 7 mph in the
                    afternoon.
 Ridgetop...........Southeast around 13 mph.
Mixing height.......9500 ft AGL.
Transport winds.....Southeast around 13 mph.
CWR.................1 percent.
Chance of thunder...4 percent.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear. Areas of smoke.
Min temperature.....67-71.
Max humidity........41-45 percent.
Wind (20 ft)........
 Slope/valley.......South winds 5 to 7 mph in the evening becoming
                    light.
 Ridgetop...........Southwest around 4 mph.
Mixing height.......1500 ft AGL.
Transport winds.....Southwest around 4 mph.
CWR.................1 percent.
Chance of thunder...3 percent.

.THURSDAY...

Sky/weather.........Mostly sunny.
Max temperature.....87-91.
Min humidity........21-25 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming south 5 to 6 mph in the
                    afternoon.
 Ridgetop...........Southeast around 7 mph.
Mixing height.......8700 ft AGL.
Transport winds.....Southeast around 7 mph.
CWR.................2 percent.
Chance of thunder...5 percent.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Mostly clear. Lows in the mid 60s. Highs in the mid 80s. Light
winds.
.SATURDAY...
Mostly clear. Lows around 60. Highs in the upper 70s. Light
winds.
.SUNDAY...
Partly cloudy. Lows in the upper 50s. Highs in the upper 70s.
Light winds.

$$
Forecaster...DA
Requested by...Hanne Meyers
Type of request...WILDFIRE
.TAG 2521076.1/STO
.DELDT 09/02/25
.FormatterVersion 2.0.0
.EMAIL hanne.meyers@usda.gov