966
FNUS75 KREV 070506
FWSREV

Spot Forecast for Upper Truckee 109...USFS
National Weather Service Reno NV
1006 PM PDT Tue May 6 2025

Forecast is based on ignition time of 0900 PDT on May 07.
If conditions become unrepresentative...contact the National
Weather Service in Reno.

.DISCUSSION...

* Temperatures will trend upward with decreasing humidities
  through the rest of the week.

* Winds through Friday expect to be light and terrain driven
  in the morning before gusting to around 15 mph during the
  afternoon hours.

* Dry conditions are expected through the rest of the week with
  precipitation chances being low (<10%).

.WEDNESDAY...

Sky/Weather.........Sunny.
Temperature.........51 at ignition...Max 60-61.
RH..................35% at ignition...Min 28-29%.
20-Foot Winds.......Winds southwest at 2 mph at
                    ignition...otherwise Upslope 3-7 mph becoming
                    west 7-8 mph gusting to around 15 mph around
                    1400 LDT.
Chc Wetting Rain....0%.
Chance of thunder...0%.
Mixing Height.......3200-4200 ft agl.
Transport Winds.....Light winds becoming west around 10 mph in the
                    afternoon.
Ventilation.........Marginal to good.

TIME (PDT)      9 AM   11 AM  1 PM   3 PM
Sky (%).........2      3      3      11
Weather cov.....
Weather type....NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0
Chc of thdr (%).0      0      0      0
Temp............51     58     60     60
RH..............35     29     30     34
20 ft wind......SW 2   W 6    W 6    W 8
20 ft wind gust.5      10     10     15
Mx ht msl (kft).2.0    4.0    4.0    4.2
Transport wind..SW 5   W 10   W 10   W 10
Vrate kt-ft/1K..12     36     36     42
Ventrate Cat....POOR   POOR   POOR   FAIR

.WEDNESDAY NIGHT...

Sky/Weather.........Clear then becoming partly cloudy then becoming
                    clear.
Temperature.........Min 40-41.
RH..................Max 62-63%.
20-Foot Winds.......West winds 7-8 mph gusting up to around 15 mph
                    becoming light by 2000 LDT.
Chc Wetting Rain....0%.
Chance of thunder...0%.
Mixing Height.......2900-3100 ft agl early in the evening.
Transport Winds.....West around 10 mph in the evening becoming
                    light.
Ventilation.........Fair to poor.

TIME (PDT)      5 PM   7 PM   9 PM   11 PM  1 AM   3 AM
Sky (%).........12     12     36     12     12     15
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Chc of thdr (%).0      0      0      0      0      0
Temp............59     55     48     45     43     41
RH..............38     50     59     62     59     57
20 ft wind......W 8    W 8    W 5    S 2    S 2    S 2
20 ft wind gust.15     15            5      5      5
Mx ht msl (kft).3.0    3.0    0.4    0.4    0.4    0.4
Transport wind..W 10   W 10   W 10   SW 5   SW 5   SW 5
Vrate kt-ft/1K..31     31     3      3      3      2
Ventrate Cat....POOR   POOR   POOR   POOR   POOR   POOR

.THURSDAY...

Sky/Weather.........Partly cloudy then becoming sunny.
Temperature.........Max 65-66.
RH..................Min 24-25%.
20-Foot Winds.......Upslope 3-7 mph.
Chc Wetting Rain....0%.
Chance of thunder...5%.
Mixing Height.......200-500 ft agl then 5600-6600 ft agl in the
                    late morning and afternoon.
Transport Winds.....Southwest around 10 mph early in the morning
                    becoming light, then becoming southwest around
                    10 mph in the afternoon.
Ventilation.........Poor to good.

TIME (PDT)      5 AM   7 AM   9 AM   11 AM  1 PM   3 PM
Sky (%).........27     27     16     12     12     11
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Chc of thdr (%).0      0      0      10     10     10
Temp............40     45     53     63     65     65
RH..............55     47     36     26     25     27
20 ft wind......S 2    S 2    S 1    SW 2   SW 2   W 6
20 ft wind gust.5      5      5      5      5      15
Mx ht msl (kft).0.4    0.4    0.8    4.9    4.9    6.8
Transport wind..SW 10  SW 10  SW 5   SW 10  SW 10  SW 10
Vrate kt-ft/1K..3      3      4      34     34     47
Ventrate Cat....POOR   POOR   POOR   POOR   POOR   FAIR

.THURSDAY NIGHT...

Sky/Weather.........Clear.
Temperature.........Min 45-46.
RH..................Max 56-57%.
20-Foot Winds.......West winds around 7 mph early in the evening
                    becoming light.
Chc Wetting Rain....0%.
Chance of thunder...5%.
Mixing Height.......4700-4900 ft agl early in the evening.
Transport Winds.....West around 10 mph in the evening becoming
                    light, then becoming south around 10 mph after
                    3 am.
Ventilation.........Fair to poor.

TIME (PDT)      5 PM   7 PM   9 PM   11 PM  1 AM   3 AM
Sky (%).........15     15     18     9      9      9
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Chc of thdr (%).10     10     10     0      0      0
Temp............64     58     53     49     48     46
RH..............33     43     52     56     55     54
20 ft wind......W 7    W 7    W 2    S 1    S 1    SE 1
20 ft wind gust.15     15     10     5      5      5
Mx ht msl (kft).4.8    4.8    0.4    0.4    0.4    0.4
Transport wind..SW 10  SW 10  W 10   SW 5   SW 5   S 10
Vrate kt-ft/1K..34     34     3      3      3      3
Ventrate Cat....POOR   POOR   POOR   POOR   POOR   POOR

$$
Forecaster...Chyba
Requested by...David Deleon
Type of request...PRESCRIBED
.TAG 2512709.0/REV
.DELDT 05/07/25
.FormatterVersion 2.0.0
.EMAIL david.deleon@usda.gov