317  
FNUS55 KREV 081158  
FWFREV  
 
FIRE WEATHER PLANNING FORECAST  
NATIONAL WEATHER SERVICE RENO NV  
358 AM PST THU DEC 8 2022  
   
DISCUSSION
 
 
A FAST MOVING COLD FRONT WILL BRING INCREASING CLOUDS TODAY FOLLOWED  
BY A CHANCE OF SNOW SHOWERS AND BREEZY CONDITIONS TONIGHT. A STRONGER  
STORM WILL ARRIVE FRIDAY NIGHT THROUGH THE WEEKEND AND BRING PERIODS  
OF GUSTY WINDS AND ACCUMULATING SNOW, EVEN DOWN TO LOWER VALLEY  
FLOORS. AFTER SOME LINGERING SNOW SHOWERS MONDAY, DRIER CONDITIONS  
AND LIGHTER WINDS RETURN FOR THE MIDDLE OF NEXT WEEK.  
 
NOTE: THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS.  
NOTE: MIXING HEIGHTS ARE IN FEET ABOVE GROUND LEVEL OF THE VALLEY FLOORS.  
NOTE: PLEASE SEE OPERATING PLAN FOR DETAILED ZONE DESCRIPTIONS  
HTTP://WWW.WRH.NOAA.GOV/FIREWX/?WFO=REV  
 
NVZ420-090030-  
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,  
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-  
358 AM PST THU DEC 8 2022  
   
TODAY
 
 
* SKY/WEATHER........PARTLY CLOUDY BECOMING MOSTLY CLOUDY.  
* MAX TEMPERATURE....  
* VALLEYS..........36-44.  
* MID SLOPE........31-41.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........36-46%.  
* MID SLOPE........37-47%.  
* 24 HR TREND......5% DRIER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 9 TO 14 MPH IN  
THE AFTERNOON.  
* RIDGE TOP........SOUTH WINDS 15 TO 20 MPH WITH GUSTS TO 35 MPH  
INCREASING TO SOUTHWEST 20 TO 30 MPH WITH  
GUSTS TO 50 MPH LATE IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......600-900 FT AGL INCREASING TO 1600-2400 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH IN  
THE AFTERNOON.  
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........17-27.  
* MID SLOPE........20-29.  
* 24 HR TREND......5 DEGREES WARMER.  
* MAX HUMIDITY.......  
* VALLEYS..........81-91%.  
* MID SLOPE........64-74%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHEAST WINDS 9 TO 15 MPH WITH GUSTS TO 35 MPH  
INCREASING TO SOUTH 12 TO 18 MPH WITH GUSTS TO  
35 MPH AFTER MIDNIGHT.  
* RIDGE TOP........SOUTHWEST WINDS 25 TO 40 MPH. GUSTS TO 60 MPH  
INCREASING TO 75 MPH AFTER MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...10%.  
* MIXING HEIGHT......600 FT AGL INCREASING TO 1000-1500 FT AGL  
AFTER MIDNIGHT.  
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH.  
* VENTILATION........MARGINAL INCREASING TO GOOD AFTER MIDNIGHT.  
   
FRIDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE  
MORNING.  
* MAX TEMPERATURE....  
* VALLEYS..........36-44.  
* MID SLOPE........31-41.  
* MIN HUMIDITY.......  
* VALLEYS..........38-48%.  
* MID SLOPE........40-50%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....WEST WINDS 7 TO 12 MPH. GUSTS TO 20 MPH.  
* RIDGE TOP........SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO 35  
MPH.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......1000-1500 FT AGL INCREASING TO 2600-3300 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.  
* VENTILATION........GOOD.  
 
   
EXTENDED
 
   
FRIDAY NIGHT
 
CLOUDY. SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. LOWS  
19-29. SOUTH WINDS 9 TO 17 MPH.    
SATURDAY
 
SNOW AND RAIN. HIGHS 39-49. LOWS 19-29. SOUTH WINDS  
20 TO 30 MPH.    
SUNDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW. HIGHS 32-40. LOWS 8-18.  
WEST WINDS 10 TO 15 MPH.    
MONDAY
 
PARTLY CLOUDY. HIGHS 27-35. LOWS 3-13. WEST WINDS AROUND  
10 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS 24-34. LOWS 3-13.    
WEDNESDAY
 
MOSTLY CLOUDY. HIGHS 24-34.  
 

 
 
NVZ421-090030-  
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN  
LYON, AND WESTERN MINERAL COUNTIES-  
358 AM PST THU DEC 8 2022  
   
TODAY
 
 
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
* MAX TEMPERATURE....  
* VALLEYS..........33-43.  
* MID SLOPE........28-38.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........24-34%.  
* MID SLOPE........24-34%.  
* 24 HR TREND......4% DRIER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTH WINDS 9 TO 16 MPH. GUSTS TO 25 MPH IN THE  
AFTERNOON.  
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH INCREASING TO SOUTHWEST  
20 TO 30 MPH LATE IN THE AFTERNOON. GUSTS TO  
45 MPH INCREASING TO 60 MPH LATE IN THE  
AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......600-800 FT AGL INCREASING TO 1500-2000 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.  
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS MAINLY  
AFTER MIDNIGHT.  
* MIN TEMPERATURE....  
* VALLEYS..........8-18.  
* MID SLOPE........19-29.  
* 24 HR TREND......8 DEGREES WARMER.  
* MAX HUMIDITY.......  
* VALLEYS..........72-82%.  
* MID SLOPE........52-62%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTH WINDS 9 TO 16 MPH WITH GUSTS TO 35 MPH  
INCREASING TO 19 TO 30 MPH WITH GUSTS TO 55  
MPH AFTER MIDNIGHT.  
* RIDGE TOP........SOUTHWEST WINDS 35 TO 55 MPH WITH GUSTS TO 95  
MPH.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...15%.  
* MIXING HEIGHT......200-500 FT AGL THEN 900-1400 FT AGL AFTER  
MIDNIGHT.  
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH INCREASING TO 25 TO 35  
MPH AFTER MIDNIGHT.  
* VENTILATION........FAIR INCREASING TO GOOD AFTER MIDNIGHT.  
   
FRIDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE  
MORNING.  
* MAX TEMPERATURE....  
* VALLEYS..........34-44.  
* MID SLOPE........28-38.  
* MIN HUMIDITY.......  
* VALLEYS..........30-40%.  
* MID SLOPE........30-40%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH. GUSTS TO 30 MPH.  
* RIDGE TOP........SOUTHWEST WINDS 20 TO 40 MPH. GUSTS TO 60 MPH  
DECREASING TO 50 MPH IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 1500-2000 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15  
MPH IN THE AFTERNOON.  
* VENTILATION........GOOD.  
 
   
EXTENDED
 
   
FRIDAY NIGHT
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.  
LOWS 11-21. SOUTH WINDS 9 TO 17 MPH INCREASING TO 15 TO 25 MPH IN  
THE MORNING.    
SATURDAY
 
SNOW AND RAIN. HIGHS 37-47. LOWS 11-21. SOUTH WINDS  
20 TO 35 MPH.    
SUNDAY
 
CLOUDY. CHANCE OF SNOW. HIGHS 28-38. LOWS 2-12. SOUTHWEST  
WINDS 10 TO 20 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 25-35. LOWS  
2 BELOW TO 8 ABOVE ZERO. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS 26-34. LOWS 2 BELOW TO 8 ABOVE ZERO.   
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 27-37.  
 

 
 
CAZ272-090030-  
GREATER LAKE TAHOE AND TRUCKEE AREA-  
358 AM PST THU DEC 8 2022  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY. PATCHY DENSE FREEZING FOG IN  
THE MORNING.  
* MAX TEMPERATURE....  
* VALLEYS..........31-37.  
* MID SLOPE........25-35.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........57-67%.  
* MID SLOPE........52-62%.  
* 24 HR TREND......10% WETTER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH WITH GUSTS TO 25 MPH  
INCREASING TO SOUTH 13 TO 20 MPH WITH GUSTS TO  
30 MPH LATE IN THE AFTERNOON.  
* RIDGE TOP........SOUTHWEST WINDS 25 TO 40 MPH WITH GUSTS TO 70  
MPH.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 1700-2600 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO 15 TO 25  
MPH IN THE AFTERNOON.  
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........NUMEROUS SNOW SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........14-24.  
* MID SLOPE........15-24.  
* 24 HR TREND......10 DEGREES WARMER.  
* MAX HUMIDITY.......  
* VALLEYS..........89-99%.  
* MID SLOPE........84-94%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTH WINDS 15 TO 25 MPH. GUSTS TO 30 MPH  
INCREASING TO 40 MPH AFTER MIDNIGHT.  
* RIDGE TOP........SOUTH WINDS 25 TO 40 MPH WITH GUSTS TO 70 MPH  
BECOMING SOUTHWEST AND INCREASING TO 40 TO 60  
MPH WITH GUSTS TO 95 MPH AFTER MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...45%.  
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 1700-2200 FT AGL  
AFTER MIDNIGHT.  
* TRANSPORT WINDS....SOUTHWEST 20 TO 30 MPH.  
* VENTILATION........FAIR INCREASING TO VERY GOOD AFTER MIDNIGHT.  
   
FRIDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........30-36.  
* MID SLOPE........24-32.  
* MIN HUMIDITY.......  
* VALLEYS..........58-68%.  
* MID SLOPE........54-64%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 13 TO 18 MPH WITH GUSTS TO 30  
MPH DECREASING TO 9 TO 14 MPH IN THE LATE  
MORNING AND AFTERNOON.  
* RIDGE TOP........SOUTHWEST WINDS 20 TO 35 MPH. GUSTS TO 70 MPH  
DECREASING TO 50 MPH IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 2700 FT AGL IN  
THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15  
MPH IN THE AFTERNOON.  
* VENTILATION........GOOD.  
 
   
EXTENDED
 
   
FRIDAY NIGHT
 
CLOUDY. CHANCE OF SNOW. LOWS 16-26. SOUTH WINDS  
7 TO 12 MPH INCREASING TO 16 TO 25 MPH.    
SATURDAY
 
SNOW. HIGHS 33-39. LOWS 15-25. SOUTHWEST WINDS 20 TO  
35 MPH.    
SUNDAY
 
CLOUDY. CHANCE OF SNOW. HIGHS 26-32. LOWS 5-15. SOUTHWEST  
WINDS 10 TO 20 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 25-31. LOWS  
3-13. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS 25-33. LOWS 3-13.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 28-36.  
 

 
 
NVZ423-090030-  
WEST HUMBOLDT BASIN IN PERSHING COUNTY-  
358 AM PST THU DEC 8 2022  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY.  
* MAX TEMPERATURE....  
* VALLEYS..........35-45.  
* MID SLOPE........34-42.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........36-46%.  
* MID SLOPE........38-48%.  
* 24 HR TREND......5% DRIER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 5 TO 10 MPH  
LATE IN THE AFTERNOON.  
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH. GUSTS TO 40 MPH.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 1500-2000 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH 10 TO 15 MPH IN THE  
AFTERNOON.  
* VENTILATION........MARGINAL INCREASING TO FAIR IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........CLOUDY. SCATTERED SNOW SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........17-27.  
* MID SLOPE........20-29.  
* 24 HR TREND......7 DEGREES WARMER.  
* MAX HUMIDITY.......  
* VALLEYS..........81-91%.  
* MID SLOPE........71-81%.  
* 24 HR TREND......10% DRIER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTH WINDS 9 TO 15 MPH. GUSTS TO 25 MPH AFTER  
MIDNIGHT.  
* RIDGE TOP........SOUTH WINDS 15 TO 30 MPH WITH GUSTS TO 55 MPH  
INCREASING TO SOUTHWEST 25 TO 40 MPH WITH  
GUSTS TO 65 MPH AFTER MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...20%.  
* MIXING HEIGHT......200-500 FT AGL THEN 600-1100 FT AGL AFTER  
MIDNIGHT.  
* TRANSPORT WINDS....SOUTH 10 TO 20 MPH.  
* VENTILATION........FAIR.  
   
FRIDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE  
MORNING.  
* MAX TEMPERATURE....  
* VALLEYS..........36-44.  
* MID SLOPE........32-42.  
* MIN HUMIDITY.......  
* VALLEYS..........39-49%.  
* MID SLOPE........44-54%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH.  
* RIDGE TOP........WEST WINDS 10 TO 20 MPH. GUSTS TO 45 MPH.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 2700-3700 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.  
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.  
 
   
EXTENDED
 
   
FRIDAY NIGHT
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.  
LOWS 21-30. SOUTH WINDS 9 TO 15 MPH.    
SATURDAY
 
SNOW AND RAIN. HIGHS 41-51. LOWS 21-31. SOUTH WINDS  
10 TO 20 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 35-41. LOWS  
13-23. SOUTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 29-35. LOWS  
7-17. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY. HIGHS 25-33. LOWS 6-16.    
WEDNESDAY
 
MOSTLY CLOUDY. HIGHS 23-31.  
 

 
 
NVZ429-090030-  
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-  
358 AM PST THU DEC 8 2022  
   
TODAY
 
 
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
* MAX TEMPERATURE....  
* VALLEYS..........37-47.  
* MID SLOPE........33-43.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........30-40%.  
* MID SLOPE........32-42%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 7 TO 12 MPH  
WITH GUSTS TO 25 MPH IN THE AFTERNOON.  
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 35 MPH.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......600-1100 FT AGL INCREASING TO 1700-2700 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH 10 TO 15 MPH IN THE  
AFTERNOON.  
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS AFTER  
MIDNIGHT.  
* MIN TEMPERATURE....  
* VALLEYS..........19-29.  
* MID SLOPE........21-31.  
* 24 HR TREND......6 DEGREES WARMER.  
* MAX HUMIDITY.......  
* VALLEYS..........71-81%.  
* MID SLOPE........53-63%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHEAST WINDS 9 TO 15 MPH SHIFTING TO THE  
SOUTH 9 TO 14 MPH IN THE MORNING. GUSTS TO 25  
MPH.  
* RIDGE TOP........SOUTHWEST WINDS 20 TO 40 MPH. GUSTS TO 50 MPH  
INCREASING TO 75 MPH.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......600-1100 FT AGL.  
* TRANSPORT WINDS....SOUTH 10 TO 20 MPH.  
* VENTILATION........FAIR.  
   
FRIDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
* MAX TEMPERATURE....  
* VALLEYS..........38-46.  
* MID SLOPE........34-42.  
* MIN HUMIDITY.......  
* VALLEYS..........34-44%.  
* MID SLOPE........35-45%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.  
* RIDGE TOP........WEST WINDS 20 TO 30 MPH. GUSTS TO 55 MPH  
DECREASING TO 45 MPH.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 2400-3400 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.  
* VENTILATION........GOOD.  
 
   
EXTENDED
 
   
FRIDAY NIGHT
 
MOSTLY CLOUDY. LOWS 21-31. SOUTH WINDS 9 TO 15 MPH.    
SATURDAY
 
SNOW AND RAIN. HIGHS 42-52. LOWS 21-31. SOUTH WINDS  
15 TO 25 MPH.    
SUNDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW. HIGHS 34-43. LOWS 13-23.  
WEST WINDS 10 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 28-37. LOWS  
8-18. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY. HIGHS 26-35. LOWS 8-18.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS 25-33.  
 

 
 
CAZ270-278-NVZ458-090030-  
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-  
NORTHERN WASHOE COUNTY-  
358 AM PST THU DEC 8 2022  
   
TODAY
 
 
* SKY/WEATHER........CLOUDY.  
* MAX TEMPERATURE....  
* VALLEYS..........31-41.  
* MID SLOPE........29-35.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........50-60%.  
* MID SLOPE........57-67%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 9 TO 16 MPH  
WITH GUSTS TO 30 MPH IN THE AFTERNOON.  
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH INCREASING TO SOUTHWEST  
20 TO 30 MPH IN THE AFTERNOON. GUSTS TO 45 MPH  
INCREASING TO 50 MPH LATE IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 1400-1900 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH INCREASING TO 15 TO 25 MPH  
IN THE AFTERNOON.  
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........SCATTERED SNOW SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........11-21.  
* MID SLOPE........13-23.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........85-95%.  
* MID SLOPE........82-92%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTH WINDS 9 TO 17 MPH WITH GUSTS TO 30 MPH.  
* RIDGE TOP........SOUTH WINDS 15 TO 25 MPH SHIFTING TO THE  
SOUTHWEST 20 TO 35 MPH AFTER MIDNIGHT. GUSTS  
TO 55 MPH INCREASING TO 70 MPH IN THE LATE  
EVENING AND EARLY MORNING.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...40%.  
* MIXING HEIGHT......600-900 FT AGL INCREASING TO 900-1400 FT AGL  
AFTER MIDNIGHT.  
* TRANSPORT WINDS....SOUTH 15 TO 25 MPH.  
* VENTILATION........FAIR.  
   
FRIDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........30-40.  
* MID SLOPE........26-34.  
* MIN HUMIDITY.......  
* VALLEYS..........53-63%.  
* MID SLOPE........58-68%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14  
MPH IN THE AFTERNOON.  
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35  
MPH.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......800 FT AGL INCREASING TO 1600-2600 FT AGL IN  
THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.  
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.  
 
   
EXTENDED
 
   
FRIDAY NIGHT
 
CLOUDY. CHANCE OF SNOW. LOWS 19-29. SOUTH WINDS  
9 TO 17 MPH INCREASING TO 13 TO 20 MPH IN THE MORNING.    
SATURDAY
 
SNOW AND RAIN. HIGHS 34-44. LOWS 17-27. SOUTH WINDS  
20 TO 35 MPH.    
SUNDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW. HIGHS 29-39. LOWS 8-18.  
WEST WINDS 10 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. HIGHS 24-34. LOWS 3-13. NORTHWEST WINDS  
AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY. HIGHS 23-31. LOWS 3-13.    
WEDNESDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 22-30.  
 

 
 
CAZ271-090030-  
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-  
358 AM PST THU DEC 8 2022  
   
TODAY
 
 
* SKY/WEATHER........CLOUDY. PATCHY FREEZING FOG IN THE MORNING.  
SCATTERED SNOW SHOWERS BY LATE IN THE AFTERNOON.  
* MAX TEMPERATURE....  
* VALLEYS..........31-39.  
* MID SLOPE........29-35.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........62-72%.  
* MID SLOPE........62-72%.  
* 24 HR TREND......10% DRIER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 9 TO 16 MPH  
WITH GUSTS TO 25 MPH IN THE AFTERNOON.  
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 35 MPH  
INCREASING TO SOUTHWEST 20 TO 30 MPH WITH  
GUSTS TO 45 MPH IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......600-1100 FT AGL INCREASING TO 1800-2800 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH INCREASING TO 15 TO 25 MPH  
IN THE AFTERNOON.  
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........SNOW SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........11-21.  
* MID SLOPE........17-27.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........88-98%.  
* MID SLOPE........84-94%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTH WINDS 9 TO 17 MPH WITH GUSTS TO 30 MPH  
SHIFTING TO THE SOUTHWEST 12 TO 18 MPH WITH  
GUSTS TO 30 MPH AFTER MIDNIGHT, THEN  
DECREASING TO 9 TO 15 MPH WITH GUSTS TO 25 MPH  
IN THE MORNING.  
* RIDGE TOP........SOUTHWEST WINDS 20 TO 35 MPH WITH GUSTS TO 55  
MPH.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...70%.  
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 1200-1700 FT AGL  
AFTER MIDNIGHT.  
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH.  
* VENTILATION........GOOD.  
   
FRIDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........29-37.  
* MID SLOPE........28-34.  
* MIN HUMIDITY.......  
* VALLEYS..........61-71%.  
* MID SLOPE........60-70%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 8 TO 13  
MPH IN THE AFTERNOON.  
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 45  
MPH.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 1900-2700 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.  
* VENTILATION........GOOD.  
 
   
EXTENDED
 
   
FRIDAY NIGHT
 
CHANCE OF SNOW IN THE EVENING, THEN SNOW LIKELY  
AFTER MIDNIGHT. LOWS 15-25. SOUTHWEST WINDS 5 TO 10 MPH INCREASING  
TO SOUTH 15 TO 25 MPH.    
SATURDAY
 
SNOW. HIGHS 32-40. LOWS 15-25. SOUTH WINDS 20 TO 35 MPH.   
SUNDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW. HIGHS 27-35. LOWS 5-15.  
WEST WINDS 10 TO 15 MPH.    
MONDAY
 
PARTLY CLOUDY. HIGHS 25-33. LOWS ZERO TO 10 ABOVE ZERO.  
NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS 26-34. LOWS ZERO TO 10 ABOVE ZERO.    
WEDNESDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 25-35.  
 

 
 
CAZ274-090030-  
SOUTHERN MONO COUNTY-  
358 AM PST THU DEC 8 2022  
   
TODAY
 
 
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
* MAX TEMPERATURE....  
* VALLEYS..........29-38.  
* MID SLOPE........27-35.  
* 24 HR TREND......4 DEGREES COOLER.  
* MIN HUMIDITY.......  
* VALLEYS..........34-44%.  
* MID SLOPE........34-44%.  
* 24 HR TREND......7% WETTER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 7 TO 12 MPH  
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.  
* RIDGE TOP........SOUTHWEST WINDS 20 TO 30 MPH. GUSTS TO 40 MPH  
INCREASING TO 60 MPH LATE IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......600-800 FT AGL INCREASING TO 1000-1500 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH 10 TO 15 MPH IN THE  
AFTERNOON.  
* VENTILATION........FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER........CLOUDY THEN BECOMING PARTLY CLOUDY. SCATTERED  
SNOW SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........7-17.  
* MID SLOPE........12-22.  
* 24 HR TREND......10 DEGREES WARMER.  
* MAX HUMIDITY.......  
* VALLEYS..........81-91%.  
* MID SLOPE........55-65%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTH WINDS 9 TO 17 MPH WITH GUSTS TO 35 MPH  
INCREASING TO SOUTHWEST 20 TO 30 MPH WITH  
GUSTS TO 55 MPH AFTER MIDNIGHT.  
* RIDGE TOP........SOUTHWEST WINDS 30 TO 45 MPH. GUSTS TO 75 MPH  
INCREASING TO 85 MPH IN THE MORNING.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...15%.  
* MIXING HEIGHT......200-500 FT AGL THEN 600-1100 FT AGL AFTER  
MIDNIGHT.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH INCREASING TO 20 TO 30  
MPH AFTER MIDNIGHT.  
* VENTILATION........MARGINAL INCREASING TO GOOD AFTER MIDNIGHT.  
   
FRIDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
ISOLATED SNOW SHOWERS IN THE MORNING.  
* MAX TEMPERATURE....  
* VALLEYS..........31-41.  
* MID SLOPE........27-37.  
* MIN HUMIDITY.......  
* VALLEYS..........39-49%.  
* MID SLOPE........38-48%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 13 TO 20 MPH WITH GUSTS TO 30  
MPH DECREASING TO 7 TO 12 MPH IN THE LATE  
MORNING AND AFTERNOON.  
* RIDGE TOP........WEST WINDS 35 TO 55 MPH WITH GUSTS TO 80 MPH  
DECREASING TO 20 TO 35 MPH WITH GUSTS TO 60  
MPH IN THE LATE MORNING AND AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......900-1400 FT AGL.  
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15  
MPH IN THE AFTERNOON.  
* VENTILATION........GOOD.  
 
   
EXTENDED
 
   
FRIDAY NIGHT
 
MOSTLY CLOUDY. LOWS 10-20. SOUTHWEST WINDS 9 TO  
17 MPH.    
SATURDAY
 
SNOW. HIGHS 32-42. LOWS 10-20. SOUTH WINDS 15 TO 25 MPH.   
SUNDAY
 
CLOUDY. CHANCE OF SNOW. HIGHS 25-35. LOWS 1-11. SOUTHWEST  
WINDS 10 TO 20 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW. HIGHS 21-30. LOWS  
2 BELOW TO 8 ABOVE ZERO. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
CLEAR. HIGHS 23-32. LOWS 2 BELOW TO 8 ABOVE ZERO.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS 27-36.  
 

 
 
.8 TO 14 DAY OUTLOOK FOR (THU DEC 15 THROUGH WED DEC 21)  
BELOW NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.  
 
=  

 
 
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