955
FNUS75 KREV 221359
FWSREV

Spot Forecast for Rancho Fire...BLM
National Weather Service Reno NV
659 AM PDT Fri Aug 22 2025

Forecast is based on forecast start time of 0700 PDT on August 22.
If conditions become unrepresentative...contact the National
Weather Service in Reno.

...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 9 AM PDT SATURDAY...

.DISCUSSION...

* Dry, hot conditions will continue today with increasing clouds
  in the afternoon. Winds remain overall light and terrain
  driven.

* Chance for precipitation increases Saturday through most of
  next week, with around a 60% chance of showers and storms.

.REST OF TODAY...

Sky/Weather.........Sunny then becoming partly cloudy.
Temperature.........Max 91-93.
RH..................Min 12-14%.
20-Foot Winds.......West 3-6 mph through around 1200, then becoming
southeast 4-7 mph with gusts up to 15 mph. Winds
then become west 4-8 mph with gusts to 15 mph
around 1800.
Chc Wetting Rain....0%.
Chance of thunder...10%.
Mixing Height.......200-500 ft agl then 11000-12000 ft agl in the
                    late morning and afternoon.
Transport Winds.....Light winds becoming south around 10 mph in the
                    afternoon.
Ventilation.........Poor to very good increasing to excellent late
                    in the afternoon.

TIME (PDT)      7 AM      10 AM     1 PM      4 PM
Sky (%).........14        10        11        37
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         10
Temp............64        78        87        91
RH..............26        18        14        12
20 FT wind......W 6G10    SW 5      SE 6G15   W 7G15
Eye level wind..W 4G6     SW 3      SE 4G9    W 4G9
Mx ht msl (kft).0.3       2.2       9.0       12
Transport wind..NW 5      W 5       S 10      S 10
Vrate kt-ft/1K..1         9         90        112
Ventrate Cat....POOR      MRGL      VYGD      EXNT

.TONIGHT...

Sky/Weather.........Mostly cloudy then becoming partly cloudy then
                    becoming clear.
Temperature.........Min 65-68.
RH..................Max 35-38%.
20-Foot Winds.......West winds 6-9 mph with gusts to around 15 mph.
Chc Wetting Rain....0%.
Chance of thunder...5%.
Mixing Height.......9800-10000 ft agl early in the evening.
Transport Winds.....West 10-15 mph in the evening and overnight
                    becoming light.
Ventilation.........Excellent decreasing to poor in the late
                    evening and overnight.

TIME (PDT)      5 PM      8 PM      11 PM     2 AM
Sky (%).........53        51        40        22
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         0
Chc of thdr (%).10        0         0         0
Temp............89        79        74        70
RH..............15        23        27        32
20 FT wind......W 9G15    W 9G15    W 8G10    W 7G10
Eye level wind..W 5G9     W 5G9     W 5G6     W 4G6
Mx ht msl (kft).9.9       0.3       0.3       0.3
Transport wind..W 15      W 15      W 10      W 5
Vrate kt-ft/1K..129       4         2         2
Ventrate Cat....EXNT      POOR      POOR      POOR

.SATURDAY...

Sky/Weather.........Sunny then becoming partly cloudy then becoming
                    mostly cloudy. Slight chance of showers and
thunderstorms in the afternoon.
Temperature.........Max 88-90.
RH..................Min 20-22%.
20-Foot Winds.......West 3-7 mph in the through around 1100, then
    south 4-9 mph with gusts to 15 mph in the afternoon.
Chc Wetting Rain....0% increasing to 15% in the afternoon.
Chance of thunder...15-30%.
Mixing Height.......200-500 ft agl then 8400-9800 ft agl in the
                    late morning and afternoon.
Transport Winds.....Light winds becoming south around 10 mph late
                    in the afternoon.
Ventilation.........Poor to good.

TIME (PDT)      5 AM      8 AM      11 AM     2 PM
Sky (%).........16        9         43        54
Weather cov.....                    S CHC     S CHC
Weather type....NONE      NONE      RNSHWR    RNSHWR
Tstm cov........
CWR.............0         0         20        25
Chc of thdr (%).0         0         20        20
Temp............65        72        85        88
RH..............33        31        23        21
20 FT wind......SW 6G10   W 6G10    SW 6G10   S 7G15
Eye level wind..SW 4G6    W 4G6     SW 4G6    S 4G9
Mx ht msl (kft).0.3       1.7       6.6       9.8
Transport wind..W 5       SW 5      S 5       S 10
Vrate kt-ft/1K..2         9         40        69
Ventrate Cat....POOR      MRGL      FAIR      GOOD

$$
Forecaster...McKellar
Requested by...IC
Type of request...WILDFIRE
.TAG 2520448.0/REV
.DELDT 08/22/25
.FormatterVersion 2.0.0
.EMAIL vtartaglia@blm.gov