142  
FNUS55 KREV 211300  
FWFREV  
 
FIRE WEATHER PLANNING FORECAST  
NATIONAL WEATHER SERVICE RENO NV  
500 AM PST WED FEB 21 2018  
   
DISCUSSION
 
 
TEMPERATURES REMAIN BELOW NORMAL THIS WEEK AS ANOTHER COLD FRONT  
MOVES THROUGH THE REGION THURSDAY WITH WIDESPREAD SNOW IN THE  
SIERRA, NORTHEAST CALIFORNIA, AND WESTERN NEVADA. VENTILATION WILL BE  
GOOD TODAY AND EXCELLENT ON THURSDAY DUE TO INCREASING WINDS AND  
BETTER MIXING. QUIETER WEATHER IS EXPECTED THIS WEEKEND WITH ANOTHER  
COLD STORM SYSTEM MOVING IN MONDAY-TUESDAY.  
 
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  
 
NVZ450-220015-  
WESTERN NEVADA SIERRA FRONT-  
500 AM PST WED FEB 21 2018  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
ISOLATED SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........35-41.  
* MID SLOPE........29-39.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........20-30%.  
* MID SLOPE........19-29%.  
* 24 HR TREND......6% DRIER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.  
* RIDGE TOP........LIGHT WINDS BECOMING SOUTHWEST AROUND 10 MPH IN  
THE AFTERNOON.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......2600 FT AGL INCREASING TO 5500-6500 FT AGL IN  
THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
ISOLATED SNOW SHOWERS IN THE EVENING.  
SCATTERED SNOW SHOWERS AFTER MIDNIGHT.  
* MIN TEMPERATURE....  
* VALLEYS..........16-24.  
* MID SLOPE........15-23.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........75-85%.  
* MID SLOPE........59-69%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH BECOMING SOUTHWEST AROUND  
10 MPH WITH GUSTS TO 25 MPH AFTER MIDNIGHT.  
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 50 MPH  
AFTER MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...20%.  
* MIXING HEIGHT......4500-5500 FT AGL DECREASING TO 2300-3200 FT  
AGL AFTER MIDNIGHT.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 25 MPH  
AFTER MIDNIGHT.  
* VENTILATION........FAIR INCREASING TO VERY GOOD AFTER MIDNIGHT.  
   
THURSDAY
 
 
* SKY/WEATHER........SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........31-37.  
* MID SLOPE........25-35.  
* MIN HUMIDITY.......  
* VALLEYS..........31-41%.  
* MID SLOPE........32-42%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.  
* RIDGE TOP........SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 60  
MPH SHIFTING TO THE WEST 15 TO 20 MPH WITH  
GUSTS TO 35 MPH IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...55%.  
* MIXING HEIGHT......3700-4700 FT AGL INCREASING TO 8100-9100 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....WEST 20 TO 30 MPH.  
* VENTILATION........EXCELLENT.  
 
   
EXTENDED
 
   
THURSDAY NIGHT
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 8-18.  
NORTHWEST WINDS 10 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS 29-34.  
LOWS 8-18. NORTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS  
38-43. LOWS 13-23. WEST WINDS 10 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. HIGHS 38-43. LOWS 19-27. SOUTHWEST WINDS  
AROUND 10 MPH.    
MONDAY THROUGH TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS.  
HIGHS 37-47. LOWS 22-27.  
 

 
 
CAZ272-220015-  
GREATER LAKE TAHOE AREA-  
500 AM PST WED FEB 21 2018  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........27-32.  
* MID SLOPE........22-32.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........27-37%.  
* MID SLOPE........35-45%.  
* 24 HR TREND......11% WETTER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHEAST AROUND 10  
MPH IN THE AFTERNOON.  
* RIDGE TOP........LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE  
AFTERNOON.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......2800-3600 FT AGL INCREASING TO 5900-6900 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........10-20.  
* MID SLOPE........10-20.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........84-94%.  
* MID SLOPE........75-85%.  
* 24 HR TREND......14% WETTER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH BECOMING SOUTHWEST 10 TO 15  
MPH WITH GUSTS TO 25 MPH AFTER MIDNIGHT.  
* RIDGE TOP........WEST WINDS AROUND 10 MPH INCREASING TO SOUTHWEST  
15 TO 25 MPH WITH GUSTS TO 60 MPH AFTER  
MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...25%.  
* MIXING HEIGHT......4100-5100 FT AGL DECREASING TO 1700-2200 FT  
AGL AFTER MIDNIGHT.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 20 TO 30 MPH  
AFTER MIDNIGHT.  
* VENTILATION........FAIR INCREASING TO VERY GOOD AFTER MIDNIGHT.  
   
THURSDAY
 
 
* SKY/WEATHER........SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........22-27.  
* MID SLOPE........17-27.  
* MIN HUMIDITY.......  
* VALLEYS..........45-55%.  
* MID SLOPE........50-60%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 35 MPH  
DECREASING TO 25 MPH IN THE AFTERNOON.  
* RIDGE TOP........SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 75  
MPH BECOMING WEST 10 TO 20 MPH WITH GUSTS TO  
30 MPH IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...60%.  
* MIXING HEIGHT......3700-4700 FT AGL INCREASING TO 7300-8300 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....WEST 20 TO 30 MPH.  
* VENTILATION........EXCELLENT.  
 
   
EXTENDED
 
   
THURSDAY NIGHT
 
SNOW SHOWERS IN THE EVENING, THEN SCATTERED SNOW  
SHOWERS AFTER MIDNIGHT. LOWS 4-14. NORTHWEST WINDS 10 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS 25-30.  
LOWS 4-14. SLOPE WINDS.    
SATURDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS  
30-35. LOWS 9-19. SOUTHWEST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. HIGHS 31-36. LOWS 16-22. SOUTHWEST WINDS  
AROUND 10 MPH.    
MONDAY THROUGH TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS.  
HIGHS 28-33. LOWS 17-22.  
 

 
 
NVZ453-220015-  
WEST CENTRAL NEVADA BASIN AND RANGE-  
500 AM PST WED FEB 21 2018  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
ISOLATED SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........34-42.  
* MID SLOPE........31-41.  
* 24 HR TREND......6 DEGREES WARMER.  
* MIN HUMIDITY.......  
* VALLEYS..........18-28%.  
* MID SLOPE........19-29%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST AROUND 10  
MPH IN THE AFTERNOON.  
* RIDGE TOP........LIGHT WINDS BECOMING SOUTHWEST AROUND 10 MPH IN  
THE AFTERNOON.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......2300-3300 FT AGL INCREASING TO 5200-6200 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE  
AFTERNOON.  
* VENTILATION........GOOD.  
   
TONIGHT
 
 
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
ISOLATED SNOW SHOWERS IN THE EVENING.  
SCATTERED SNOW SHOWERS AFTER MIDNIGHT.  
* MIN TEMPERATURE....  
* VALLEYS..........13-23.  
* MID SLOPE........14-24.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........71-81%.  
* MID SLOPE........55-65%.  
* 24 HR TREND......12% WETTER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH BECOMING SOUTH AROUND 10  
MPH WITH GUSTS TO 25 MPH AFTER MIDNIGHT.  
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH  
AFTER MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...30%.  
* MIXING HEIGHT......3700-4700 FT AGL DECREASING TO 1400-1900 FT  
AGL AFTER MIDNIGHT.  
* TRANSPORT WINDS....SOUTH AROUND 10 MPH INCREASING TO SOUTHWEST 15  
TO 25 MPH AFTER MIDNIGHT.  
* VENTILATION........VERY GOOD.  
   
THURSDAY
 
 
* SKY/WEATHER........SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........30-40.  
* MID SLOPE........27-37.  
* MIN HUMIDITY.......  
* VALLEYS..........23-33%.  
* MID SLOPE........26-36%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.  
* RIDGE TOP........WEST WINDS 15 TO 25 MPH WITH GUSTS TO 45 MPH.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...50%.  
* MIXING HEIGHT......3000-4000 FT AGL INCREASING TO 6300-7300 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....WEST 15 TO 20 MPH.  
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
THURSDAY NIGHT
 
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 7-17.  
NORTHWEST WINDS 10 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS 31-39.  
LOWS 7-17. NORTHWEST WINDS 10 TO 15 MPH.    
SATURDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS  
39-47. LOWS 9-19. WEST WINDS 15 TO 20 MPH.    
SUNDAY
 
PARTLY CLOUDY. HIGHS 38-46. LOWS 16-26. SOUTHWEST WINDS  
10 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS. HIGHS 41-51. LOWS 18-28.   
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. HIGHS 35-45.  
 

 
 
CAZ270-278-NVZ458-220015-  
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-  
NORTHERN WASHOE COUNTY-  
500 AM PST WED FEB 21 2018  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........32-42.  
* MID SLOPE........27-37.  
* 24 HR TREND......11 DEGREES WARMER.  
* MIN HUMIDITY.......  
* VALLEYS..........23-33%.  
* MID SLOPE........26-36%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST AROUND 10  
MPH IN THE AFTERNOON.  
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 20 MPH IN  
THE MORNING.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...10%.  
* MIXING HEIGHT......2300-2800 FT AGL INCREASING TO 5600-6500 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE  
AFTERNOON.  
* VENTILATION........GOOD.  
   
TONIGHT
 
 
* SKY/WEATHER........ISOLATED SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........11-21.  
* MID SLOPE........11-20.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........78-88%.  
* MID SLOPE........69-79%.  
* 24 HR TREND......24% WETTER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH  
AFTER MIDNIGHT.  
* RIDGE TOP........WEST WINDS 10 TO 20 MPH. GUSTS TO 35 MPH AFTER  
MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...50%.  
* MIXING HEIGHT......5300-6300 FT AGL DECREASING TO 3100-4100 FT  
AGL AFTER MIDNIGHT.  
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH SHIFTING TO THE WEST 15  
TO 25 MPH AFTER MIDNIGHT.  
* VENTILATION........EXCELLENT.  
   
THURSDAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........27-37.  
* MID SLOPE........22-32.  
* MIN HUMIDITY.......  
* VALLEYS..........27-37%.  
* MID SLOPE........32-42%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30  
MPH.  
* RIDGE TOP........NORTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40  
MPH DECREASING TO 10 TO 15 MPH WITH GUSTS TO  
25 MPH IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...50%.  
* MIXING HEIGHT......2600-3600 FT AGL INCREASING TO 6900-7900 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....NORTHWEST 15 TO 20 MPH.  
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.  
 
   
EXTENDED
 
   
THURSDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. SCATTERED SHOWERS. LOWS ZERO TO 10 ABOVE ZERO. NORTH WINDS  
10 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 29-37. LOWS ZERO TO 10 ABOVE ZERO.  
NORTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS  
34-44. LOWS 10-20. WEST WINDS 20 TO 25 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS 34-44.  
LOWS 15-25. SOUTHWEST WINDS 10 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. BRISK. CHANCE OF SNOW SHOWERS. HIGHS 35-45.  
LOWS 16-26.    
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. HIGHS 31-41.  
 

 
 
CAZ271-220015-  
WESTERN LASSEN/EASTERN PLUMAS/EASTERN SIERRA/EASTERN NEVADA COUNTIES-  
500 AM PST WED FEB 21 2018  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........33-41.  
* MID SLOPE........31-37.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........22-32%.  
* MID SLOPE........23-33%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.  
* RIDGE TOP........LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE  
AFTERNOON.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...10%.  
* MIXING HEIGHT......2500-3500 FT AGL INCREASING TO 5900-6900 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE  
AFTERNOON.  
* VENTILATION........GOOD.  
   
TONIGHT
 
 
* SKY/WEATHER........ISOLATED SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........10-20.  
* MID SLOPE........9-19.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........83-93%.  
* MID SLOPE........82-92%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH  
AFTER MIDNIGHT.  
* RIDGE TOP........SOUTHWEST WINDS AROUND 10 MPH INCREASING TO 15  
TO 20 MPH WITH GUSTS TO 45 MPH AFTER MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...50%.  
* MIXING HEIGHT......4700-5700 FT AGL DECREASING TO 1700-2700 FT  
AGL AFTER MIDNIGHT.  
* TRANSPORT WINDS....WEST 10 TO 15 MPH INCREASING TO SOUTHWEST 20  
TO 30 MPH AFTER MIDNIGHT.  
* VENTILATION........VERY GOOD.  
   
THURSDAY
 
 
* SKY/WEATHER........SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........27-37.  
* MID SLOPE........24-32.  
* MIN HUMIDITY.......  
* VALLEYS..........33-43%.  
* MID SLOPE........34-44%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.  
* RIDGE TOP........WEST WINDS 15 TO 25 MPH WITH GUSTS TO 45 MPH  
DECREASING TO 10 TO 15 MPH WITH GUSTS TO 25  
MPH IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...60%.  
* MIXING HEIGHT......3100-4100 FT AGL INCREASING TO 6500-7500 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....NORTHWEST 15 TO 25 MPH.  
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
THURSDAY NIGHT
 
CLOUDY IN THE EVENING THEN BECOMING PARTLY CLOUDY.  
SCATTERED SHOWERS. LOWS 2-12. NORTHWEST WINDS 10 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 30-40. LOWS 2-12. SLOPE WINDS.    
SATURDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS  
35-43. LOWS 6-16. WEST WINDS 10 TO 15 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS 36-44.  
LOWS 14-24. SOUTHWEST WINDS AROUND 10 MPH.    
MONDAY THROUGH TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS.  
HIGHS 32-42. LOWS 17-25.  
 

 
 
CAZ273-220015-  
MONO AND EASTERN ALPINE COUNTIES-  
500 AM PST WED FEB 21 2018  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........28-38.  
* MID SLOPE........22-32.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........16-26%.  
* MID SLOPE........23-33%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.  
* RIDGE TOP........LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE  
AFTERNOON.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......2500-3500 FT AGL INCREASING TO 5500-6500 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
ISOLATED SNOW SHOWERS.  
* MIN TEMPERATURE....  
* VALLEYS..........2-12.  
* MID SLOPE........6-16.  
* 24 HR TREND......8 DEGREES COOLER.  
* MAX HUMIDITY.......  
* VALLEYS..........75-85%.  
* MID SLOPE........58-68%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH BECOMING SOUTHWEST AROUND  
10 MPH WITH GUSTS TO 25 MPH AFTER MIDNIGHT.  
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 50 MPH  
AFTER MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......3700-4700 FT AGL DECREASING TO 1000-1500 FT  
AGL AFTER MIDNIGHT.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH  
AFTER MIDNIGHT.  
* VENTILATION........FAIR.  
   
THURSDAY
 
 
* SKY/WEATHER........SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........24-34.  
* MID SLOPE........18-28.  
* MIN HUMIDITY.......  
* VALLEYS..........17-27%.  
* MID SLOPE........25-35%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 10 TO 15 MPH INCREASING TO WEST  
15 TO 20 MPH IN THE AFTERNOON. GUSTS TO 35  
MPH.  
* RIDGE TOP........SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 75  
MPH BECOMING WEST 15 TO 25 MPH WITH GUSTS TO  
55 MPH IN THE AFTERNOON.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...60%.  
* MIXING HEIGHT......2200-3200 FT AGL INCREASING TO 6400-7400 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....WEST 25 TO 35 MPH.  
* VENTILATION........EXCELLENT.  
 
   
EXTENDED
 
   
THURSDAY NIGHT
 
SNOW SHOWERS. LOWS ZERO TO 10 ABOVE ZERO. WEST  
WINDS 10 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS 25-35.  
LOWS 1 BELOW TO 9 ABOVE ZERO. NORTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS  
35-45. LOWS 1 BELOW TO 9 ABOVE ZERO. WEST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. HIGHS 35-43. LOWS 11-21. SOUTHWEST WINDS  
AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF SNOW SHOWERS. HIGHS 35-45. LOWS  
12-22.    
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. HIGHS 31-41.  
 

 
 
NVZ459-220015-  
MINERAL AND SOUTHERN LYON COUNTIES-  
500 AM PST WED FEB 21 2018  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
ISOLATED SNOW SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........32-42.  
* MID SLOPE........29-39.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........17-27%.  
* MID SLOPE........18-28%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.  
* RIDGE TOP........LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE  
AFTERNOON.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......2500-3400 FT AGL INCREASING TO 5400-6300 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........FAIR.  
   
TONIGHT
 
 
* SKY/WEATHER........PARTLY CLOUDY.  
* MIN TEMPERATURE....  
* VALLEYS..........13-23.  
* MID SLOPE........12-22.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........63-73%.  
* MID SLOPE........50-60%.  
* 24 HR TREND......7% WETTER.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTHEAST WINDS AROUND 10 MPH SHIFTING TO THE  
SOUTH WITH GUSTS TO 20 MPH AFTER MIDNIGHT.  
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH AFTER  
MIDNIGHT.  
* HAINES INDEX.......2.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......3500-4500 FT AGL DECREASING TO 1600-2600 FT  
AGL AFTER MIDNIGHT.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH  
AFTER MIDNIGHT.  
* VENTILATION........FAIR.  
   
THURSDAY
 
 
* SKY/WEATHER........SCATTERED SHOWERS.  
* MAX TEMPERATURE....  
* VALLEYS..........30-40.  
* MID SLOPE........27-37.  
* MIN HUMIDITY.......  
* VALLEYS..........23-33%.  
* MID SLOPE........23-33%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH  
INCREASING TO 35 MPH IN THE AFTERNOON.  
* RIDGE TOP........WEST WINDS 15 TO 25 MPH WITH GUSTS TO 50 MPH.  
* HAINES INDEX.......2-3.  
* LAL................1.  
* CHC WETTING RAIN...50%.  
* MIXING HEIGHT......2200-3200 FT AGL INCREASING TO 7300-8300 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....WEST 20 TO 30 MPH.  
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
THURSDAY NIGHT
 
SNOW SHOWERS IN THE EVENING, THEN SCATTERED SNOW  
SHOWERS AFTER MIDNIGHT. LOWS 8-18. NORTHWEST WINDS 10 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS 29-39.  
LOWS 8-18. NORTHWEST WINDS 10 TO 15 MPH.    
SATURDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS  
40-48. LOWS 9-19. WEST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. HIGHS 37-46. LOWS 18-27. SOUTHWEST WINDS  
AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF SNOW SHOWERS. HIGHS 43-51. LOWS  
20-28.    
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. HIGHS 37-47.  
 

 
 
.8 TO 14 DAY OUTLOOK FOR (WED FEB 28 THROUGH TUE MAR 6)  
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.  
 
=  

 
 
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