845
FNUS76 KSTO 200101
FWSSTO

Spot Forecast for French Meadows Machine Piles...USFS
National Weather Service Sacramento CA
501 PM PST Wed Nov 19 2025

Forecast is based on ignition time of 0700 PST on November 20.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Active weather to continue at the burn site Thursday morning, with
light rain showers in the morning then snow showers as colder air
moves into the region. Precipitation should taper off late Thursday
night/early Friday morning as the weather system exits the region.
Friday will see breezy winds as the system moves out, with east winds
sustained up to 10-15 mph, gusts as high as 25 mph. Improving conditions
by the weekend with clearing skies and calmer winds.

.THURSDAY...

Sky/weather.........Mostly cloudy. Rain showers at start of the day,
then transitioning to light snow showers. 1-3
inches of snow accumulation through Friday
morning, 0.50" inches of rain.
Max temperature.....37-41.
Min humidity........90-94 percent.
Wind (20 ft)........
 Slope/valley.......Light winds, terrain driven winds below 10 mph.
 Ridgetop...........Southwest 7 to 10 mph shifting to the west
                    early in the afternoon, then shifting to the
                    northeast around 6 mph late in the afternoon.
Mixing height.......2500 ft AGL.
Transport winds.....Southwest around 10 mph decreasing to 7 to 10
                    mph early in the morning, then shifting to the
                    west early in the afternoon shifting to the
                    northeast around 6 mph late in the afternoon.
CWR.................78 percent decreasing to 12 percent.
Chance of thunder...7 percent.

TIME (PST)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CDY CDY MC  MC  CDY MC  MC  MC  MC  MC  MC
CWR.............80  80  80  60  60  60  60  60  60  10  10
Chc of thdr (%).0   0   0   10  10  10  10  10  10  0   0
Temp............32  33  35  35  37  39  38  39  39  37  35
RH..............100 100 98  100 92  88  92  86  93  92  97
SL/VL wind dir..SW  SW  SW  SW  SW  SW  W   W   W   N   N
SL/VL wind spd..3   2   2   3   2   2   2   3   3   3   3
SL/VL wind gust.9   8   8   8   8   8   9   9   9   8   8
Ridge wind dir..SW  SW  SW  SW  SW  SW  W   W   W   NE  NE
Ridge wind spd..10  10  10  7   7   7   5   5   5   6   6
Mix hgt (kft)...1.7 1.7 1.7 2.3 2.3 2.3 2.5 2.5 2.5 1.5 1.5
Transp wind dir.SW  SW  SW  SW  SW  SW  W   W   W   NE  NE
Transp wind spd.10  10  10  7   7   7   5   5   5   6   6

.THURSDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Chance of snow showers in the evening and
                    overnight.
Min temperature.....29-33.
Max humidity........92-96 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming northeast 5 to 10 mph with
                    gusts around 16 to 23 mph.
 Ridgetop...........Northeast 6 to 13 mph increasing to 16 to 21
                    mph in the late evening and overnight.
Mixing height.......1300 ft AGL.
Transport winds.....Northeast 13 to 21 mph.
CWR.................12 percent.
Chance of thunder...1 percent.

TIME (PST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......MC  MC  MC  MC  PC  PC  PC  PC  PC  PC  PC  PC
CWR.............10  10  10  10  10  10  10  10  10  10  0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............34  32  32  32  32  32  33  33  33  33  33  32
RH..............100 96  98  96  92  91  90  90  90  91  91  89
SL/VL wind dir..N   NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
SL/VL wind spd..3   6   6   6   8   8   8   10  10  10  10  10
SL/VL wind gust.8   14  14  14  20  20  20  21  21  21  23  23
Ridge wind dir..NE  NE  NE  NE  NE  NE  NE  E   E   E   E   E
Ridge wind spd..6   13  13  13  16  16  16  18  18  18  21  21
Mix hgt (kft)...1.5 1.4 1.4 1.4 1.3 1.3 1.3 1.4 1.4 1.4 1.6 1.6
Transp wind dir.NE  NE  NE  NE  NE  NE  NE  E   E   E   E   E
Transp wind spd.6   13  13  13  16  16  16  18  18  18  21  21

.FRIDAY...

Sky/weather.........Mostly sunny.
Max temperature.....43-47.
Min humidity........68-72 percent.
Wind (20 ft)........
 Slope/valley.......East winds 5 to 12 mph with gusts around 22 to 28
                    mph.
 Ridgetop...........East winds 16 to 21 mph.
Mixing height.......3000 ft AGL.
Transport winds.....East winds 16 to 21 mph.
CWR.................4 percent.
Chance of thunder...0 percent.

TIME (PST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......PC  PC  PC  PC  PC  PC  PC  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............33  33  35  37  39  41  43  44  44  43  41  39
RH..............87  85  84  83  81  77  73  71  73  77  81  84
SL/VL wind dir..NE  E   E   E   E   E   E   E   E   E   E   E
SL/VL wind spd..10  12  12  12  12  12  12  8   8   8   7   7
SL/VL wind gust.23  28  28  28  25  25  25  21  21  21  20  20
Ridge wind dir..E   E   E   E   E   E   E   E   E   E   E   E
Ridge wind spd..21  20  20  20  21  21  21  20  20  20  16  16
Mix hgt (kft)...1.6 1.4 1.4 1.4 2.6 2.6 2.6 3.0 3.0 3.0 1.7 1.7
Transp wind dir.E   E   E   E   E   E   E   E   E   E   E   E
Transp wind spd.21  20  20  20  21  21  21  20  20  20  16  16

$$
Forecaster...JW
Requested by...Tahoe / American River
Type of request...PRESCRIBED
.TAG 2526396.0/STO
.DELDT 11/20/25
.FormatterVersion 2.0.0
.EMAIL mike.durocher@usda.gov,brian.crawford@usda.gov,matthew.radtke@usda.gov,jeremy.hieronimus@usda.gov