673
FNUS76 KSTO 140837
FWSSTO

Spot Forecast for Grass Flat Pile RX...USFS
National Weather Service Sacramento CA
137 AM PDT Tue Oct 14 2025

Forecast is based on ignition time of 0600 PDT on October 14.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
A cold, wet system brings potential for rain showers, isolated
thunderstorms, and periodically breezy west-southwest winds today.
Isolated showers will be possible through midday today, with
highest potential for wetting rain and isolated thunderstorms
coming this afternoon and evening. Lingering showers remain
possible through early Wednesday morning, with dry weather then
expected to follow through the end of the week.

.TODAY...

Sky/weather.........Mostly cloudy. Rain showers likely in the
                    morning, then rain showers in the afternoon.
Max temperature.....42-46.
Min humidity........92-96 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming southwest up to 6 mph early
                    in the late morning and afternoon.
 Ridgetop...........East around 7 mph shifting to the southwest 8
                    to 9 mph late in the afternoon.
Mixing height.......1900 ft AGL.
Transport winds.....Northeast around 7 mph shifting to the
                    southwest 8 to 9 mph late in the afternoon.
CWR.................32 percent increasing to 68 percent late in the
                    morning, then decreasing to 44 percent late in
                    the afternoon.
Chance of thunder...8 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MC  MC  MC  MC  MC  CDY MC  CDY CDY CDY CDY CDY
CWR.............30  30  30  30  30  70  70  70  70  70  70  40
Chc of thdr (%).0   0   0   0   0   10  10  10  10  10  10  10
Temp............36  36  36  37  38  38  39  40  40  40  42  39
RH..............99  100 100 100 100 98  96  95  95  96  96  100
SL/VL wind dir..S   SW  S   SW  SW  SW  S   SW  SW  SW  SW  SW
SL/VL wind spd..3   3   5   3   5   6   5   6   6   6   6   5
SL/VL wind gust.6   6   7   7   8   9   9   9   10  9   9   8
Ridge wind dir..NE  NE  E   E   E   SE  SE  SE  SW  SW  SW  SW
Ridge wind spd..7   7   7   7   7   6   6   6   9   9   9   8
Mix hgt (kft)...0.1 0.1 0.6 0.6 0.6 1.9 1.9 1.9 1.4 1.4 1.4 0.6
Transp wind dir.NE  NE  E   E   E   SE  SE  SE  SW  SW  SW  SW
Transp wind spd.7   7   7   7   7   6   6   6   9   9   9   8

.TONIGHT...

Sky/weather.........Cloudy. Rain showers likely, then chance of
                    rain showers overnight.
Min temperature.....33-37.
Max humidity........98-100 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds up to 6 mph.
 Ridgetop...........Southwest 7 to 9 mph.
Mixing height.......400 ft AGL.
Transport winds.....Southwest 7 to 9 mph.
CWR.................44 percent decreasing to 16 percent late in the
                    evening.
Chance of thunder...5 percent early in the evening, becoming 0 percent
                    overnight.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY
CWR.............40  40  40  40  40  20  20  20  20  20  20  10
Chc of thdr (%).10  10  0   0   0   0   0   0   0   0   0   0
Temp............39  39  37  37  37  37  37  37  37  37  37  37
RH..............96  97  100 100 100 100 100 100 100 100 100 100
SL/VL wind dir..SW  SW  S   S   S   S   S   S   SW  SW  SW  SW
SL/VL wind spd..5   6   6   6   6   6   6   6   6   6   6   5
SL/VL wind gust.8   8   9   10  13  13  13  13  9   9   9   7
Ridge wind dir..SW  SW  SW  SW  SW  SW  SW  SW  S   S   S   SW
Ridge wind spd..8   8   7   7   7   7   7   7   9   9   9   7
Mix hgt (kft)...0.6 0.6 0.4 0.4 0.4 0.8 0.8 0.8 0.8 0.8 0.8 0.6
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  S   S   S   SW
Transp wind spd.8   8   7   7   7   7   7   7   9   9   9   7

.WEDNESDAY...

Sky/weather.........Cloudy then becoming partly cloudy by the
                    afternoon. Chance of rain showers in the morning.
Max temperature.....43-47.
Min humidity........81-85 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds up to 5 mph.
 Ridgetop...........Southwest 6 to 7 mph shifting to the west 5 to
                    6 mph late in the afternoon.
Mixing height.......1900 ft AGL.
Transport winds.....Southwest around 7 mph shifting to the west 5
                    to 6 mph late in the afternoon.
CWR.................11 percent decreasing to 1 percent late in the
                    afternoon.
Chance of thunder...0 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CDY CDY MC  MC  MC  MC  MC  MC  PC  PC  PC  PC
CWR.............10  10  10  10  10  0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............37  36  36  36  37  38  40  41  43  44  44  44
RH..............100 99  99  100 100 100 96  90  86  85  87  89
SL/VL wind dir..SW  SW  SW  SW  SW  SW  SW  SW  W   W   W   W
SL/VL wind spd..5   5   5   5   5   5   5   5   5   5   5   5
SL/VL wind gust.7   7   7   7   7   8   8   8   9   9   9   7
Ridge wind dir..SW  SW  SW  SW  SW  W   W   W   W   W   W   W
Ridge wind spd..7   7   7   7   7   6   6   6   6   6   6   5
Mix hgt (kft)...0.6 0.6 0.5 0.5 0.5 1.2 1.2 1.2 1.9 1.9 1.9 1.4
Transp wind dir.SW  SW  SW  SW  SW  W   W   W   W   W   W   W
Transp wind spd.7   7   7   7   7   6   6   6   6   6   6   5

.OUTLOOK FOR TUESDAY OCTOBER 21 THROUGH MONDAY OCTOBER 27...
The Climate Prediction Center`s probabilistic outlook favors
near normal temperatures and slightly above normal precipitation
for this timeframe.

$$
Forecaster...JW
Requested by...Jason MIller
Type of request...PRESCRIBED
.TAG 2523473.2/STO
.DELDT 10/14/25
.FormatterVersion 2.0.0
.EMAIL james.lico@usda.gov,jason.t.miller@usda.gov,mark.cresalia@usda.gov,jared.hawe@usda.gov