975
FNUS76 KSTO 131822
FWSSTO

Spot Forecast for Root Fire...GFC IMT3
National Weather Service Sacramento CA
1122 AM PDT Sat Sep 13 2025

Forecast is based on forecast start time of 0700 PDT on September 14.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Conditions trend warmer and drier leading into early next week,
notably Sunday into Monday. There is a nonzero chance of a shower
or isolated thunderstorm early Sunday morning but current forecast
keep wetting rains and thunderstorm activity further north and
west. Otherwise, breezy winds are expected early Monday morning
with gusts up to 15-20 MPH before lessening into the afternoon.

.SUNDAY...

Sky/weather.........Sunny.
Max temperature.....64-68.
Min humidity........32-36 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming northwest 5 to 8 mph
                    late in the afternoon.
 Ridgetop...........Northwest 7 to 11 mph.
Mixing height.......5600 ft AGL.
Transport winds.....Northwest 6 to 9 mph.
CWR.................1 percent.
Chance of thunder...3 percent.

TIME (PDT)      7 AM         11 AM        3 PM
Sky cover.......PCLDY        MCLEAR       MCLEAR
CWR.............0            0            0
Chc of thdr (%).0            0            0
Temp............51           58           65
RH..............61           50           37
SL/VL wind......NW 3G5       N 5G8        NW 6G9
Ridgetop wind...NW 7         N 7          NW 10
Mix hgt (ft)....BLW100       4200         5600
Transport wind..NW 7         NW 6         NW 6

.SUNDAY NIGHT...

Sky/weather.........Clear.
Min temperature.....49-53.
Max humidity........54-58 percent.
Wind (20 ft)........
 Slope/valley.......North winds 7 to 11 mph.
 Ridgetop...........North 10 to 15 mph.
Mixing height.......0 ft AGL.
Transport winds.....North 8 to 12 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6 PM         10 PM        2 AM
Sky cover.......MCLEAR       CLEAR        CLEAR
CWR.............0            0            0
Chc of thdr (%).0            0            0
Temp............63           55           53
RH..............38           53           53
SL/VL wind......NW 6G10      N 9G12       N 9G15
Ridgetop wind...NW 10        N 10         N 13
Mix hgt (ft)....4600         BLW100       BLW100
Transport wind..N 9          N 12         N 10

.MONDAY...

Sky/weather.........Sunny.
Max temperature.....71-75.
Min humidity........18-22 percent.
Wind (20 ft)........
 Slope/valley.......North winds 4 to 7 mph becoming light late
                    in the afternoon.
 Ridgetop...........North around 9 mph shifting to the east 5 to 8
                    mph late in the afternoon.
Mixing height.......5100 ft AGL.
Transport winds.....North around 8 mph shifting to the east 5 to 8
                    mph late in the afternoon.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6 AM         10 AM        2 PM
Sky cover.......CLEAR        CLEAR        CLEAR
CWR.............0            0            0
Chc of thdr (%).0            0            0
Temp............51           58           71
RH..............52           42           25
SL/VL wind......N 7G12       N 7G12       E 5G7
Ridgetop wind...N 10         N 9          E 6
Mix hgt (ft)....BLW100       BLW100       4500
Transport wind..N 8          N 8          E 5

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...
Clear. Lows in the upper 50s. Highs in the mid 70s. Northeast
winds around 6 mph.
.WEDNESDAY...
Clear. Lows in the upper 50s. Highs in the mid 70s. Northwest
winds around 5 mph.
.THURSDAY...
Mostly clear. Lows in the mid 50s. Highs in the lower 70s. North
winds around 8 mph.

$$
Forecaster...DA
Requested by...Rachel Fonvielle, PSC3(t)
Type of request...WILDFIRE
.TAG 2521911.0/STO
.DELDT 09/13/25
.FormatterVersion 2.0.0
.EMAIL rachel_fonvielle@firenet.gov