163
FNUS76 KSTO 152100
FWSSTO

Spot Forecast for Grass Flat Pile RX...USFS
National Weather Service Sacramento CA
200 PM PDT Wed Oct 15 2025

Forecast is based on ignition time of 1400 PDT on October 15.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Dry and cool conditions are expected for the rest of today into
Thursday. Light north winds develop tonight and shift to the
northeast by early tomorrow morning, becoming breezy. Humidity
will be high today into tonight, with a Thursday afternoon minimum
trending lower, around 35-40 percent. Warming temperatures are
expected through the weekend, with a slight chance of light rain
showers Sunday night. Periods of locally breezy northeast winds
Sunday evening into Monday.

.REST OF TODAY...

Sky/weather.........Partly sunny.
Max temperature.....39-44.
Min humidity........90-94 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds up to 6 mph.
 Ridgetop...........West 5 to 6 mph.
Mixing height.......1400 ft AGL.
Transport winds.....West 5 to 6 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      2PM 3PM 4PM 5PM
Sky cover.......MC  PC  PC  MC
CWR.............0   0   0   0
Chc of thdr (%).0   0   0   0
Temp............40  42  43  43
RH..............92  92  92  92
SL/VL wind dir..SW  SW  SW  SW
SL/VL wind spd..5   5   6   5
SL/VL wind gust.9   8   8   7
Ridge wind dir..N   N   N   N
Ridge wind spd..6   6   6   5
Mix hgt (kft)...1.4 1.4 1.4 0.6
Transp wind dir.W   W   W   W
Transp wind spd.6   6   6   5

.TONIGHT...

Sky/weather.........Partly cloudy.
Min temperature.....32-36.
Max humidity........98-100 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming northeast up to 7 mph in
                    the late evening and overnight.
 Ridgetop...........West around 5 mph shifting to the northeast 6
                    to 9 mph early in the evening.
Mixing height.......0 ft AGL.
Transport winds.....West around 5 mph shifting to the northeast 6
                    to 9 mph early in the evening.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......PC  PC  PC  PC  MCR MCR MCR MCR MCR MCR MCR MCR
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............42  41  40  38  38  37  36  37  37  36  36  36
RH..............92  99  100 100 99  100 100 97  97  95  95  93
SL/VL wind dir..SW  SW  N   N   N   N   N   N   N   NE  NE  NE
SL/VL wind spd..3   2   2   2   5   6   6   6   6   6   7   7
SL/VL wind gust.6   5   5   5   6   9   9   9   9   10  10  12
Ridge wind dir..N   N   N   N   N   N   N   N   NW  N   N   N
Ridge wind spd..25  25  25  20  20  15  15  15  15  15  20  20
Mix hgt (kft)...0.6 0.6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.W   W   NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
Transp wind spd.5   5   6   6   6   8   8   8   9   9   9   9

.THURSDAY...

Sky/weather.........Sunny.
Max temperature.....55-59.
Min humidity........35-39 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds up to 8 mph in the morning and
                    early afternoon becoming light, then becoming
                    northeast up to 5 mph late in the afternoon.
 Ridgetop...........Northeast 9 to 13 mph.
Mixing height.......3300 ft AGL.
Transport winds.....Northeast 9 to 13 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MCR MCR MCR MCR CLR CLR CLR CLR CLR CLR CLR CLR
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............35  34  35  38  44  48  51  53  55  56  56  57
RH..............94  94  92  84  72  60  50  44  41  37  38  40
SL/VL wind dir..NE  NE  NE  NE  NE  NE  NE  NE  N   NE  NE  NE
SL/VL wind spd..8   8   8   7   6   6   5   5   5   3   5   5
SL/VL wind gust.13  13  13  13  12  10  9   9   8   9   8   8
Ridge wind dir..N   N   N   N   N   N   N   N   N   N   NE  NE
Ridge wind spd..20  20  25  25  25  25  30  30  30  30  30  30
Mix hgt (kft)...0.1 0.1 0.3 0.3 0.3 2.2 2.2 2.2 3.3 3.3 3.3 0.9
Transp wind dir.NE  NE  NE  NE  NE  NE  NE  NE  N   N   N   NE
Transp wind spd.9   9   10  10  10  13  13  13  13  13  13  13

$$
Forecaster...EK
Requested by...James Lico
Type of request...PRESCRIBED
.TAG 2523690.0/STO
.DELDT 10/15/25
.FormatterVersion 2.0.0
.EMAIL james.lico@usda.gov