886
FNUS76 KSTO 040834
FWSSTO

Spot Forecast for Big Hill 69...USFS
National Weather Service Sacramento CA
134 AM PDT Sat Oct 4 2025

Forecast is based on ignition time of 0600 PDT on October 04.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
The recent weather system has moved further east and out of the area,
with improving conditions expected today and into next week. Periods
of breezy north to east winds will develop today and continue into
Sunday, with surface wind gusts up to 20 mph. Further into next week,
mostly clear and dry conditions are expected until Friday, when another
weather system may move into NorCal. Confidence is low on this system
developing and moving into our area at this time.

.TODAY...

Sky/weather.........Sunny.
Max temperature.....52-56.
Min humidity........45-49 percent.
Wind (20 ft)........
 Slope/valley.......East winds up to 8 mph in the morning becoming
                    light, then becoming north up to 5 mph late in
                    the afternoon.
 Ridgetop...........Northeast 8 to 9 mph shifting to the north
                    around 5 mph late in the afternoon.
Mixing height.......3500 ft AGL.
Transport winds.....East around 8 mph shifting to the north around
                    5 mph late in the afternoon.
CWR.................0 percent.
Chance of thunder...1 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 MCR MCR MCR 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............40  38  38  40  43  44  47  50  52  52  53  52
RH..............77  81  83  78  74  69  64  55  49  46  47  47
SL/VL wind dir..E   E   E   E   E   E   NE  NE  NE  N   N   N
SL/VL wind spd..8   8   8   7   6   6   5   3   3   3   3   5
SL/VL wind gust.12  10  12  10  9   9   8   7   8   8   8   8
Ridge wind dir..E   E   E   E   E   NE  NE  NE  N   N   N   N
Ridge wind spd..8   8   9   9   9   8   8   8   5   5   5   5
Mix hgt (kft)...0.1 0.1 0.3 0.3 0.3 2.1 2.1 2.1 3.5 3.5 3.5 1.5
Transp wind dir.E   E   E   E   E   NE  NE  NE  N   N   N   N
Transp wind spd.8   8   9   9   9   8   8   8   5   5   5   5

.TONIGHT...

Sky/weather.........Mostly clear.
Min temperature.....37-41.
Max humidity........68-72 percent.
Wind (20 ft)........
 Slope/valley.......North winds up to 5 mph shifting to the
                    southeast in the evening, then increasing to 9
                    to 16 mph late in the evening.
 Ridgetop...........Northeast 5 to 10 mph shifting to the east
                    around 16 mph late in the evening.
Mixing height.......0 ft AGL.
Transport winds.....North around 5 mph shifting to the northeast in
                    the evening, then shifting to the east around
                    16 mph late in the evening.
CWR.................0 percent.
Chance of thunder...1 percent.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......MCR MCR CLR MCR MCR MCR MCR CLR 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............49  46  42  43  43  43  43  43  42  42  41  41
RH..............59  68  74  68  62  59  61  60  61  60  62  62
SL/VL wind dir..N   SE  E   SE  SE  E   SE  SE  E   SE  SE  E
SL/VL wind spd..5   5   6   7   10  14  15  16  16  16  16  16
SL/VL wind gust.8   8   9   10  14  20  20  20  20  20  20  20
Ridge wind dir..N   N   NE  NE  NE  E   E   E   E   E   E   E
Ridge wind spd..5   5   10  10  10  16  16  16  16  16  16  16
Mix hgt (kft)...1.5 1.5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.N   N   NE  NE  NE  E   E   E   E   E   E   E
Transp wind spd.5   5   10  10  10  16  16  16  16  16  16  16

.SUNDAY...

Sky/weather.........Sunny.
Max temperature.....53-57.
Min humidity........44-48 percent.
Wind (20 ft)........
 Slope/valley.......East winds 5 to 16 mph decreasing to 5 to 6 mph
                    late in the afternoon.
 Ridgetop...........East 9 to 16 mph.
Mixing height.......4000 ft AGL.
Transport winds.....East 9 to 16 mph.
CWR.................0 percent.
Chance of thunder...1 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MCR MCR MCR MCR MCR 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............41  39  39  41  44  47  50  52  53  54  53  51
RH..............64  67  69  64  61  58  53  48  45  44  46  49
SL/VL wind dir..E   E   E   E   E   E   E   E   E   E   E   E
SL/VL wind spd..16  16  14  14  14  10  10  10  6   6   6   6
SL/VL wind gust.20  20  20  20  20  16  16  16  13  13  13  12
Ridge wind dir..E   E   E   E   E   E   E   E   E   E   E   E
Ridge wind spd..16  16  15  15  15  14  14  14  9   9   9   10
Mix hgt (kft)...0.1 0.1 0.1 0.1 0.1 1.6 1.6 1.6 4.0 4.0 4.0 3.0
Transp wind dir.E   E   E   E   E   E   E   E   E   E   E   E
Transp wind spd.16  16  15  15  15  14  14  14  9   9   9   10

.OUTLOOK FOR SATURDAY OCTOBER 11 THROUGH FRIDAY OCTOBER 17...
Latest guidance from the Climate Prediction Center shows likely cooler
temperatures and an above normal chance of precipitation in the
long term.

$$
Forecaster...JW
Requested by...Chris Enriquez
Type of request...PRESCRIBED
.TAG 2522031.10/STO
.DELDT 10/04/25
.FormatterVersion 2.0.0
.EMAIL Christian.enriquez@usda.gov