510
FNUS76 KSTO 030920
FWSSTO

Spot Forecast for Iron Trails Project...USFS
National Weather Service Sacramento CA
120 AM PST Wed Dec 3 2025

Forecast is based on ignition time of 0700 PST on December 03.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Seasonable and dry weather is expected to continue in the burn
vicinity across the middle of the week. Breezy east-northeast
winds expected today into Thursday morning, with strongest gusts
17 to 21 mph through this afternoon, gradually decreasing in the
evening and overnight hours. Persistent east-northeast winds
expected to result in limited overnight humidity recovery. A
slight warming trend is then on track late week into the weekend
as dry weather persists.

.WEDNESDAY...

Sky/weather.........Partly cloudy.
Max temperature.....48-53.
Min humidity........23-28 percent.
Wind (20 ft)........
 Slope/valley.......East winds 7 to 10 mph. Gusts 17 to 21 mph
                    throughout the day.
 Ridgetop...........East 22 to 28 mph decreasing to around 17 mph
                    late in the afternoon.
Mixing height.......Rising to near 2300 ft AGL by the afternoon.
Transport winds.....East 22 to 28 mph decreasing to around 17 mph
                    late in the afternoon.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PST)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Sky cover.......PCLDY  PCLDY  PCLDY  PCLDY  PCLDY  PCLDY
CWR.............0      0      0      0      0      0
Chc of thdr (%).0      0      0      0      0      0
Temp............31     37     47     48     48     42
RH..............58     46     28     26     28     38
SL/VL wind......E 8    E 9    E 10   E 8    E 7    E 7
SL/VL wind gust.18     21     21     18     17     17
Ridgetop wind...E 26   E 26   E 28   E 22   E 22   E 17
Mix hgt (ft)....1600   1600   2200   2300   2300   1200
Transport wind..E 26   E 26   E 28   E 22   E 22   E 17

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....27-32.
Max humidity........49-54 percent.
Wind (20 ft)........
 Slope/valley.......East winds 5 to 8 mph in the evening becoming
                    light.
 Ridgetop...........East 13 to 17 mph.
Mixing height.......Falling to near 1000 ft AGL overnight.
Transport winds.....East 13 to 17 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky cover.......PCLDY  MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR
CWR.............0      0      0      0      0      0
Chc of thdr (%).0      0      0      0      0      0
Temp............37     34     33     32     31     31
RH..............44     48     49     47     44     41
SL/VL wind......E 7    E 8    E 6    E 6    E 3    E 2
SL/VL wind gust.17     18     14     14     8      7
Ridgetop wind...E 17   E 17   E 14   E 14   E 13   E 13
Mix hgt (ft)....1200   1000   1000   1000   1000   1000
Transport wind..E 17   E 17   E 14   E 14   E 13   E 13

.THURSDAY...

Sky/weather.........Mostly sunny.
Max temperature.....54-59.
Min humidity........22-27 percent.
Wind (20 ft)........
 Slope/valley.......Light winds.
 Ridgetop...........Northeast 7 to 13 mph shifting to the north
                    around 6 mph early in the afternoon.
Mixing height.......Rising to near 2700 ft AGL by the afternoon.
Transport winds.....Northeast 7 to 13 mph shifting to the north
                    around 6 mph early in the afternoon.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PST)      6 AM      9 AM      NOON      3 PM
Sky cover.......MCLEAR    MCLEAR    PCLDY     MCLEAR
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............30        43        55        53
RH..............40        29        22        33
SL/VL wind......E 2G7     E 2G7     E 2G6     NW 3G9
Ridgetop wind...E 13      E 9       NE 7      N 5
Mix hgt (ft)....1000      1000      1800      2700
Transport wind..E 13      E 9       NE 7      N 5

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Mostly clear. Lows in the mid 30s. Highs in the lower 60s. Light
winds during the day, becoming east-northeast overnight. Daytime
humidity in the upper 30s.
.SATURDAY...
Mostly clear. Lows in the upper 30s. Highs around 60. Light
winds during the day, becoming east-northeast overnight. Daytime
humidity in the mid 40s.
.SUNDAY...
Mostly clear. Lows in the upper 30s. Highs in the lower 60s.
Light winds during the day, becoming east-northeast overnight.
Daytime humidity in the upper 30s.

$$
Forecaster...JW
Requested by...Iron Trails RXB3 trainee/ Jose Pelayo
Type of request...PRESCRIBED
.TAG 2526707.2/STO
.DELDT 12/03/25
.FormatterVersion 2.0.0
.EMAIL jose.pelayo@usda.gov