242
FNUS75 KREV 191030
FWSREV

Spot Forecast for Fallen Leaf Admin...USFS/ LTBMU
National Weather Service Reno NV
230 AM PST Wed Nov 19 2025

Forecast is based on ignition time of 0800 PST on November 19.
If conditions become unrepresentative...contact the National
Weather Service in Reno.

.DISCUSSION...

* Calm conditions today with overall light winds and below average
  temperatures. Inversions will persist through the day.

* The next storm system arrives tonight and will continue into Thursday
  evening. Snow levels will be around 6,000 ft.

* We`ll clear out and return to dry weather from Thursday through
  at least the end of the weekend.


.TODAY...

Sky/Weather.........Sunny then becoming partly cloudy.
Temperature.........28 at ignition...Max 42.
RH..................90% at ignition...Min 65%.
20-Foot Winds.......Southwest 1-4 mph. Winds turn to the north
3-7 mph after 1100. Winds turn back to the
southwest 3-7 mph after 1500.
Chc Wetting Rain....0%.
Chance of thunder...0%.
Mixing Height.......1600-2600 ft agl.
Transport Winds.....Light winds.
Ventilation.........Poor to marginal.

TIME (PST)      8 AM      11 AM     2 PM
Sky (%).........14        13        34
Weather cov.....
Weather type....NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0
Chc of thdr (%).0         0         0
Temp............28        40        41
RH..............96        70        65
20 FT wind......SW 1      N 3G6     N 4G7
Mx ht msl (kft).1.3       2.4       2.6
Transport wind..S 5       SE 5      W 5
Vrate kt-ft/1K..5         12        18
Ventrate Cat....POOR      MRGL      MRGL

.TONIGHT...

Sky/Weather.........Partly cloudy then becoming mostly cloudy.
                    Chance of snow after 0300.
Temperature.........Min 26.
RH..................Max 100%.
20-Foot Winds.......Southwest 4-9 mph with gusts to 16 mph.
Chc Wetting Rain....0% increasing to 10% overnight.
Chance of thunder...0%.
Mixing Height.......1000-1500 ft agl.
Transport Winds.....Southwest 10-15 mph increasing to around 20 mph
                    after 3 am.
Ventilation.........Fair to poor.

TIME (PST)      4 PM      7 PM      10 PM     1 AM
Sky (%).........43        53        74        94
Weather cov.....                              CHANCE
Weather type....NONE      NONE      NONE      SNOW
Tstm cov........
CWR.............0         0         10        10
Chc of thdr (%).0         0         0         0
Temp............38        30        29        27
RH..............75        85        81        90
20 FT wind......SW 2G5    SW 5G13   SW 6G15   S 7G15
Mx ht msl (kft).1.4       0.9       0.9       1.3
Transport wind..SW 10     S 10      SW 15     SW 20
Vrate kt-ft/1K..10        8         13        23
Ventrate Cat....MRGL      POOR      MRGL      FAIR

.THURSDAY...

Sky/Weather.........Cloudy. Chance of snow in the morning, then
                    snow likely in the afternoon.
Temperature.........Max 39.
RH..................Min 85%.
20-Foot Winds.......Southwest 3-7 mph.
Chc Wetting Rain....35% increasing to 45% in the afternoon.
Chance of thunder...5%.
Mixing Height.......1500-2200 ft agl.
Transport Winds.....Southwest 10-15 mph.
Ventilation.........Fair.

TIME (PST)      4 AM      7 AM      10 AM     1 PM
Sky (%).........84        92        87        87
Weather cov.....CHANCE    CHANCE    LIKELY    LIKELY
Weather type....SNOW      SNOW      SNOW      SNOW
Tstm cov........
CWR.............40        40        50        50
Chc of thdr (%).0         0         10        10
Temp............27        26        30        31
RH..............100       100       89        85
20 FT wind......SW 6G15   SW 3G6    SW 2G5    W 2G5
Mx ht msl (kft).1.5       1.7       2.0       2.1
Transport wind..SW 15     SW 15     SW 15     SW 10
Vrate kt-ft/1K..22        25        37        25
Ventrate Cat....FAIR      FAIR      FAIR      FAIR

$$
Forecaster...McKellar
Requested by...David Deleon
Type of request...PRESCRIBED
.TAG 2525980.1/REV
.DELDT 11/19/25
.FormatterVersion 2.0.0
.EMAIL david.deleon@usda.gov