114
FNUS75 KREV 090440
FWSREV

Spot Forecast for Alpine County Fuels Mitigation Program...Alpine County
National Weather Service Reno NV
940 PM PDT Thu May 8 2025

Forecast is based on ignition time of 0800 PDT on May 09.
If conditions become unrepresentative...contact the National
Weather Service in Reno.

.DISCUSSION...

* Warm temperatures persist along with low relative humidity through
  Saturday.

* Terrain driven winds continue overnight becoming from the southwest
  up to 10 mph during the afternoon. This combo will lead to very
  good to excellent vent rates.

* A storm system may bring gusty winds, cooler temperatures, as
  well as rain and mountain snow showers very early next week.


.FRIDAY...

Sky/Weather.........Sunny.
Temperature.........55-60 at ignition...Max 73-78.
RH..................44-49% at ignition...Min 19-23%.
20-Foot Winds.......Upslope winds 3-7 mph becoming southwest
5-10 mph in the afternoon.
Chc Wetting Rain....0%.
Chance of thunder...5%.
Mixing Height.......8300-9300 ft agl.
Ventilation.........Fair to excellent.

TIME (PDT)      8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........5      5      4      14     14
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0
Chc of thdr (%).0      0      10     10     10
Temp............55     68     75     77     76
RH..............49     30     22     20     21
20 ft wind......E 1    E 1    S 3    SW 8   SW 8
20 ft wind gust.              5      15     15
Mx ht msl (kft).5.2    5.2    8.9    9.3    9.3
Vrate kt-ft/1K..36     36     107    121    121
Ventrate Cat....FAIR   FAIR   EXNT   EXNT   EXNT

.FRIDAY NIGHT...

Sky/Weather.........Clear.
Temperature.........Min 50-55.
RH..................Max 45-50%.
20-Foot Winds.......Southwest winds 7-9 mph early in the evening
                    becoming light.
Chc Wetting Rain....0%.
Chance of thunder...0%.
Mixing Height.......1600-2600 ft agl.
Transport Winds.....Southwest 10-15 mph.
Ventilation.........Very good to marginal.

TIME (PDT)      5 PM      8 PM      11 PM     2 AM
Sky (%).........11        9         8         15
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............76        65        58        54
RH..............22        36        47        46
20 FT wind......SW 9G15   SW 6G10   SW 5G10   SW 5G10
Mx ht msl (kft).7.2       1.6       1.5       1.5
Transport wind..SW 15     SW 10     SW 10     SW 10
Vrate kt-ft/1K..86        14        14        14
Ventrate Cat....VYGD      MRGL      MRGL      MRGL

$$
Forecaster...Crespo
Requested by...Jim Lamb
Type of request...PRESCRIBED
.TAG 2511119.2/REV
.DELDT 05/09/25
.FormatterVersion 2.0.0
.EMAIL jlamb@alpinecountyca.gov