731
FNUS76 KSTO 100138
FWSSTO

Spot Forecast for Big Hill...USFS
National Weather Service Sacramento CA
638 PM PDT Sat May 9 2026

Forecast is based on ignition time of 0600 PDT on May 10.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Mostly clear and dry conditions to prevail over the burn site the
next several days. Mostly terrain driven winds below 10 mph in
the mornings, then in the afternoon diurnal shifts expected with
gusts up to around 15 mph possible. Daytime humidity values are
forecast to be in the upper 20s on Sunday, then fall into the teens
on Monday and Tuesday. Wednesday will see a weak wave of energy
move through the area, increasing RH values into the mid 30s and
introduce around a 10% chance of a rain shower and isolated
thunderstorm in the afternoon and evening. Best chances for any
rain or t-storms are currently forecast to be north of the burn site,
however as we move through the beginning of the week, those chances
may shift.

.SUNDAY...

Sky/weather.........Sunny.
Max temperature.....74-78.
Min humidity........28-32 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming southwest 5 to 8 mph late
                    in the morning.
 Ridgetop...........South 7 to 15 mph shifting to the southwest
                    around 13 mph late in the afternoon.
Mixing height.......5000 ft AGL.
Transport winds.....South 7 to 15 mph shifting to the southwest
                    around 13 mph late in the afternoon.
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 CLR CLR CLR CLR CLR CLR CLR 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............51  53  56  58  63  68  72  73  74  74  75  75
RH..............46  43  41  40  37  33  31  30  30  30  30  30
SL/VL wind dir..S   SE  SE  SE  SE  S   SW  SW  SW  SW  SW  SW
SL/VL wind spd..3   2   2   2   3   6   7   8   8   8   7   6
SL/VL wind gust.8   8   7   8   8   12  15  16  17  17  17  16
Ridge wind dir..SE  SE  S   S   S   S   S   S   S   S   S   SW
Ridge wind spd..9   9   7   7   7   13  13  13  15  15  15  13
Mix hgt (kft)...0.5 0.5 1.4 1.4 1.4 4.9 4.9 4.9 5.0 5.0 5.0 2.9
Transp wind dir.SE  SE  S   S   S   S   S   S   S   S   S   SW
Transp wind spd.9   9   7   7   7   13  13  13  15  15  15  13

.SUNDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....48-52.
Max humidity........51-55 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 5 to 6 mph early in the evening
                    becoming light.
 Ridgetop...........Southwest 6 to 13 mph shifting to the southeast
                    around 7 mph early in the morning.
Mixing height.......500 ft AGL.
Transport winds.....Southwest 6 to 13 mph shifting to the southeast
                    around 7 mph early in the morning.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......MCR MCR MCR MCR 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............74  70  68  63  61  59  57  56  55  52  52  52
RH..............31  38  42  47  50  53  52  51  50  49  48  48
SL/VL wind dir..SW  SW  SW  SW  SW  N   N   N   N   N   N   SE
SL/VL wind spd..6   6   1   1   1   0   0   0   0   0   0   1
SL/VL wind gust.16  16  8   8   8   6   6   6   5   5   5   6
Ridge wind dir..SW  SW  SW  SW  SW  SW  SW  SW  S   S   S   SE
Ridge wind spd..13  13  7   7   7   6   6   6   7   7   7   7
Mix hgt (kft)...2.9 2.9 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  S   S   S   SE
Transp wind spd.13  13  7   7   7   6   6   6   7   7   7   7

.MONDAY...

Sky/weather.........Sunny.
Max temperature.....74-78.
Min humidity........22-26 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming southwest 5 to 8 mph late
                    in the morning.
 Ridgetop...........South 7 to 13 mph shifting to the southwest 16
                    to 17 mph late in the afternoon.
Mixing height.......6500 ft AGL.
Transport winds.....South 7 to 17 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 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............50  52  56  60  64  68  71  73  74  75  75  74
RH..............48  47  45  40  34  29  26  25  24  23  24  25
SL/VL wind dir..SE  SE  E   E   E   SW  SW  SW  SW  SW  SW  SW
SL/VL wind spd..1   1   2   2   2   6   6   6   8   8   8   7
SL/VL wind gust.6   6   7   7   7   14  14  14  16  16  16  17
Ridge wind dir..SE  SE  SE  SE  SE  SW  SW  SW  SW  SW  SW  SW
Ridge wind spd..7   7   8   8   8   13  13  13  17  17  17  16
Mix hgt (kft)...0.5 0.5 0.4 0.4 0.4 4.5 4.5 4.5 6.5 6.5 6.5 4.9
Transp wind dir.SE  SE  SE  SE  SE  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.7   7   8   8   8   13  13  13  17  17  17  16

.FORECAST DAYS 3 THROUGH 7...
.TUESDAY...
Mostly clear. Lows in the lower 50s. Highs in the mid 70s. South
winds around 5 mph.
.WEDNESDAY...
Partly cloudy. Slight chance of rain. Lows around 50. Highs in
the upper 60s. Southwest winds around 5 mph.
.THURSDAY...
Mostly clear. Lows in the lower 40s. Highs in the upper 60s.
Light winds.
.FRIDAY...
Mostly clear. Lows in the lower 40s. Highs in the mid 60s.
.SATURDAY...
Mostly clear. Lows in the lower 40s. Highs in the lower 60s.

$$
Forecaster...JW
Requested by...Chris Enriquez
Type of request...PRESCRIBED
.TAG 2612855.4/STO
.DELDT 05/10/26
.FormatterVersion 2.0.0
.EMAIL casey.simoni@usda.gov,joseph.mcginn@usda.gov,christian.enriquez@usda.gov