868
FNUS75 KREV 050400
FWSREV

Spot Forecast for Alpine County Fuels Mitigation Program...Alpine County
National Weather Service Reno NV
900 PM PDT Wed Jun 4 2025

Forecast is based on ignition time of 0700 PDT on June 05.
If conditions become unrepresentative...contact the National
Weather Service in Reno.

.DISCUSSION...

* The threat for showers and thunderstorms continue with up to 20%
  chance of storms in the late afternoon and early evening.

* Gusty and erratic winds are likely with any storm in the
  afternoon. Otherwise, winds will be terrain driven or from the
  west with speeds below 10 mph.

* Warmer temperatures and better chances for storms are expected
  this weekend.

.THURSDAY...

Sky/Weather.........Sunny becoming partly cloudy, then becoming
                    mostly cloudy in the afternoon. Slight chance of
showers and thunderstorms in the afternoon.
Temperature.........43-48 at ignition...Max 75-79.
RH..................73-77% at ignition...Min 22-25%.
20-Foot Winds.......Winds southwest at 2 mph at
                    ignition...otherwise west winds 3-7 mph increasing
                    to 5-10 mph late in the afternoon. Gusty and
                    erratic winds expected near thunderstorms late
                    in the afternoon.
Chc Wetting Rain....0% increasing to 10% in the afternoon.
Chance of thunder...0% in the morning increasing to 10% early afternoon
and then to 20% in the late afternoon.
Mixing Height.......9000-10000 ft agl.
Transport Winds.....Light winds becoming southwest 10-15 mph in
                    the late morning and afternoon.
Ventilation.........Marginal to excellent.

TIME (PDT)      7 AM   9 AM   11 AM  1 PM   3 PM
Sky (%).........5      6      27     27     56
Weather cov.....                            S CHC
Weather type....NONE   NONE   NONE   NONE   RNSHWR
Tstm cov........                            S CHC
CWR.............0      0      10     10     10
Chc of thdr (%).0      0      10     10     20
Temp............52     63     74     76     77
RH..............59     37     24     24     22
20 ft wind......SW 2   W 2    W 6    W 6    W 8
20 ft wind gust.5      5      10     10     15
Mx ht msl (kft).1.6    7.1    9.7    9.7    10
Transport wind..SW 5   SW 10  SW 10  SW 10  W 15
Vrate kt-ft/1K..10     49     78     78     150
Ventrate Cat....MRGL   GOOD   VYGD   VYGD   EXNT

.THURSDAY NIGHT...

Sky/Weather.........Partly cloudy then becoming clear then becoming
                    partly cloudy then becoming clear.
Temperature.........Min 45-50.
RH..................Max 65-70%.
20-Foot Winds.......West winds 5-10 mph early in the evening
                    becoming light overnight.
Chc Wetting Rain....5%.
Chance of thunder...0%.
Mixing Height.......1500-2000 ft agl.
Transport Winds.....West around 10-15 mph early in the evening
                    becoming light.
Ventilation.........Very good to poor.

TIME (PDT)      5 PM   7 PM   9 PM   11 PM  1 AM   3 AM
Sky (%).........37     37     14     25     25     13
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............10     10     10     0      0      0
Chc of thdr (%).0      0      0      0      0      0
Temp............72     70     63     59     55     52
RH..............25     40     49     59     64     66
20 ft wind......W 8    W 8    W 5    W 2    W 2    SW 2
20 ft wind gust.15     15     10     5      5      5
Mx ht msl (kft).4.9    4.9    1.7    1.4    1.4    1.4
Transport wind..W 15   W 10   SW 5   SW 5   SW 5   SW 5
Vrate kt-ft/1K..74     44     10     7      7      6
Ventrate Cat....VYGD   GOOD   MRGL   POOR   POOR   POOR

.FRIDAY...

Sky/Weather.........Sunny then becoming partly cloudy.
Temperature.........Max 78-82.
RH..................Min 19-24%.
20-Foot Winds.......Upslope 3-7 mph.
Chc Wetting Rain....0% increasing to 10% in the afternoon.
Chance of thunder...0% increasing to 10% in the afternoon%.
Mixing Height.......7500-8500 ft agl.
Transport Winds.....Light winds becoming southwest around 10 mph
                    late in the afternoon.
Ventilation.........Poor to good.

TIME (PDT)      5 AM   7 AM   9 AM   11 AM  1 PM   3 PM
Sky (%).........11     11     8      13     13     30
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      10     10     10
Chc of thdr (%).0      0      0      10     10     10
Temp............48     46     60     75     79     81
RH..............68     60     43     25     22     20
20 ft wind......SW 1   SW 1   NE 1   NE 3   NE 3   NW 6
20 ft wind gust.5      5      5      10     10     10
Mx ht msl (kft).1.4    1.4    2.1    9.0    9.0    8.5
Transport wind..SW 5   SW 5   NE 5   E 5    E 5    SW 10
Vrate kt-ft/1K..6      6      11     45     45     60
Ventrate Cat....POOR   POOR   MRGL   GOOD   GOOD   GOOD

$$
Forecaster...Crespo
Requested by...Jim lamb
Type of request...PRESCRIBED
.TAG 2513867.10/REV
.DELDT 06/05/25
.FormatterVersion 2.0.0
.EMAIL jeffbrees@yahoo.com,jlamb@alpinecountyca.gov