AFOS product FWSREV
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Product Timestamp: 2025-09-21 10:26 UTC

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FNUS75 KREV 211026
FWSREV

Spot Forecast for Ash Creek RX Assist...CAL FIRE/LMU
National Weather Service Reno NV
326 AM PDT Sun Sep 21 2025

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

.DISCUSSION...

* Dry and sunny conditions dominate through the early week, 
  with little to no cloud cover and no precipitation expected.

* Winds begin light each morning, then shift and increase during
  the afternoons. Strongest mixing and dispersion developing by
  Tuesday.

* Overnight conditions will be clear and cool, with moderate 
  humidity recoveries expected. 

.MONDAY...

Sky/Weather.........Sunny. 
Temperature.........39 at ignition...Max 79-82. 
RH..................99% at ignition...Min 17-22%. 
20-Foot Winds.......Winds northeast 2-5 mph in the morning 
                    becoming 5-8 mph with gusts to 15 mph.
Chance of thunder...0%. 
Mixing Height.......4600-5600 ft agl. 
Transport Winds.....Light winds. 
Ventilation.........Poor in the morning becoming fair in the 
                    afternoon. 

TIME (PDT)      7 AM      10 AM     1 PM      4 PM      
Sky (%).........10        2         0         2         
Weather cov.....                                        
Weather type....NONE      NONE      NONE      NONE      
Tstm cov........                                        
CWR.............0         0         0         0         
Chc of thdr (%).0         0         0         0         
Temp............39        59        75        81        
RH..............99        56        26        18        
20 FT wind......NE 2G5    NE 2G5    NE 5G10   NE 6G15   
Mx ht msl (kft).0.8       1.3       3.3       5.9       
Transport wind..E 5       E 5       E 5       E 5       
Vrate kt-ft/1K..5         7         20        36        
Ventrate Cat....POOR      POOR      FAIR      FAIR      

.MONDAY NIGHT...

Sky/Weather.........Clear. 
Temperature.........Min 39-42. 
RH..................Max 56-61%. 
20-Foot Winds.......Northeast winds 5-7 mph early in the 
                    evening becoming becoming east 7-10 
                    mph with gusts to 15 mph overnight. 
Chc Wetting Rain....0%. 
Chance of thunder...0%. 
Mixing Height.......800-1300 ft agl. 
Transport Winds.....East 10-15 mph. 
Ventilation.........Good in the evening becoming poor overnight. 

TIME (PDT)      5 PM      8 PM      11 PM     2 AM      
Sky (%).........4         5         4         1         
Weather cov.....                                        
Weather type....NONE      NONE      NONE      NONE      
Tstm cov........                                        
CWR.............0         0         0         0         
Chc of thdr (%).0         0         0         0         
Temp............80        69        56        47        
RH..............19        29        40        49        
20 FT wind......NE 7G15   NE 6G10   E 10G15   E 9G15    
Mx ht msl (kft).6.0       0.8       0.8       0.7       
Transport wind..E 10      E 15      E 10      E 10      
Vrate kt-ft/1K..42        8         8         6         
Ventrate Cat....GOOD      POOR      POOR      POOR      

.TUESDAY...

Sky/Weather.........Sunny. 
Temperature.........Max 83-86. 
RH..................Min 11-16%. 
20-Foot Winds.......East winds 5-8 mph in the morning becoming 
                    southeast 7-12 mph with gusts to 20 mph in 
                    the afternoon. 
Chc Wetting Rain....0%. 
Chance of thunder...0%. 
Mixing Height.......5900-6900 ft agl. 
Transport Winds.....Southeast 10-15 mph. 
Ventilation.........Poor in morning becoming very good in the 
                    afternoon. 

TIME (PDT)      5 AM      8 AM      11 AM     2 PM      
Sky (%).........2         6         1         1         
Weather cov.....                                        
Weather type....NONE      NONE      NONE      NONE      
Tstm cov........                                        
CWR.............0         0         0         0         
Chc of thdr (%).0         0         0         0         
Temp............42        44        71        82        
RH..............58        58        21        14        
20 FT wind......E 7G10    E 6G10    E 7G15    SE 10G20  
Mx ht msl (kft).0.8       0.6       3.9       7.3       
Transport wind..E 10      E 10      SE 15     SE 15     
Vrate kt-ft/1K..6         4         43        88        
Ventrate Cat....POOR      POOR      GOOD      VYGD      

$$
Forecaster...Johnston
Requested by...Larry Turman
Type of request...PRESCRIBED
.TAG 2522173.0/REV
.DELDT 09/21/25
.FormatterVersion 2.0.0
.EMAIL larry.turman@fire.ca.gov