937  
FNUS55 KREV 091208  
FWFREV  
 
FIRE WEATHER PLANNING FORECAST  
NATIONAL WEATHER SERVICE RENO NV  
508 AM PDT SUN AUG 9 2020  
 
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH  
WEDNESDAY EVENING FOR THUNDERSTORMS AND NEW FIRE STARTS FOLLOWED BY  
BREEZY WINDS AND LOW HUMIDITY ACROSS NORTHEAST CALIFORNIA AND  
NORTHWEST NEVADA INCLUDING THE SIERRA FRONT...  
   
DISCUSSION
 
 
ISOLATED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED THIS  
AFTERNOON NEAR THE SIERRA. STORMS SPREAD INTO WESTERN NEVADA AND  
NORTHEAST CALIFORNIA MONDAY AND TUESDAY, WITH INCREASING BREEZES  
BRINGING FIRE CONCERNS TUESDAY AND WEDNESDAY. TEMPERATURES WILL  
REMAIN QUITE WARM THROUGH MONDAY AND THEN COOL SLIGHTLY FOR MID  
TO LATE 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  
 
NVZ420-100100-  
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,  
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-  
508 AM PDT SUN AUG 9 2020  
 
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH  
WEDNESDAY EVENING FOR THUNDERSTORMS AND NEW FIRE STARTS FOLLOWED BY  
BREEZY WINDS AND LOW HUMIDITY...  
   
TODAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........92-100.  
* MID SLOPE........87-95.  
* 24 HR TREND......2-4 DEGREES WARMER.  
* MIN HUMIDITY.......  
* VALLEYS..........9-16%.  
* MID SLOPE........10-15%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTH 7 TO 12 MPH  
WITH GUSTS TO 20 MPH IN THE AFTERNOON.  
* RIDGE TOP........NORTHEAST AROUND 10 MPH.  
* HAINES INDEX.......6.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 10000-11000 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING EAST TO SOUTHEAST 5 MPH  
IN THE AFTERNOON.  
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........PARTLY CLOUDY WITH A SLIGHT CHANCE OF  
THUNDERSTORMS IN THE EVENING THEN CLEAR.  
* MIN TEMPERATURE....  
* VALLEYS..........50-60.  
* MID SLOPE........55-65.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........48-58%.  
* MID SLOPE........32-42%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTHWEST WINDS 9 TO 14 MPH. GUSTS TO 20 MPH  
UNTIL EARLY MORNING.  
* RIDGE TOP........NORTHWEST WINDS 10 TO 20 MPH.  
* HAINES INDEX.......6.  
* LAL................2.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......6000-7000 FT AGL IN THE EVENING THEN 200-500  
FT AGL.  
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH BECOMING NORTH UP TO  
10 MPH OVERNIGHT.  
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
AFTERNOON.  
* MAX TEMPERATURE....  
* VALLEYS..........90-98.  
* MID SLOPE........84-94.  
* MIN HUMIDITY.......  
* VALLEYS..........9-17%.  
* MID SLOPE........11-17%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHEAST 7 TO 12  
MPH IN THE AFTERNOON.  
* RIDGE TOP........LIGHT WINDS BECOMING NORTHEAST 10 TO 15 MPH LATE  
IN THE AFTERNOON.  
* HAINES INDEX.......5.  
* LAL................3.  
* CHC WETTING RAIN...10%.  
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 9200-10200 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....EAST WINDS 5-10 MPH.  
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
MONDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. LOWS  
50-60. WEST WINDS 12 TO 18 MPH DECREASING TO 9 TO 14 MPH IN THE LATE  
EVENING AND OVERNIGHT.    
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.  
HIGHS 86-96. LOWS 45-55. WEST WINDS 10 TO 15 MPH.    
WEDNESDAY THROUGH THURSDAY
 
CLEAR. HIGHS 86-96. LOWS 44-54. WEST  
WINDS 10 TO 20 MPH.    
FRIDAY THROUGH SATURDAY
 
CLEAR. HIGHS 87-97. LOWS 45-55.  
 

 
 
NVZ421-100100-  
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN  
LYON, AND WESTERN MINERAL COUNTIES-  
508 AM PDT SUN AUG 9 2020  
   
TODAY
 
 
* SKY/WEATHER........MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS  
IN THE AFTERNOON NEAR THE CREST.  
* MAX TEMPERATURE....  
* VALLEYS..........86-96.  
* MID SLOPE........80-90.  
* 24 HR TREND......2-4 DEGREES WARMER.  
* MIN HUMIDITY.......  
* VALLEYS..........8-18%.  
* MID SLOPE........8-18%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHEAST 9 TO 14  
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.  
* RIDGE TOP........EAST WINDS 10 TO 15 MPH.  
* HAINES INDEX.......5-6.  
* LAL................2.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 10700-11700 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING EAST UP TO 10 MPH IN THE  
AFTERNOON.  
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
* MIN TEMPERATURE....  
* VALLEYS..........43-53.  
* MID SLOPE........53-63.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........50-60%.  
* MID SLOPE........33-43%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTHWEST WINDS 9 TO 14 MPH IN THE EVENING  
BECOMING DOWNSLOPE 2 TO 5 MPH.  
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH.  
* HAINES INDEX.......5-6.  
* LAL................2.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......6000-7000 FT AGL IN THE EVENING THEN 200-500  
FT AGL.  
* TRANSPORT WINDS....NORTHWEST UP TO 10 MPH BECOMING LIGHT.  
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
AFTERNOON.  
* MAX TEMPERATURE....  
* VALLEYS..........85-95.  
* MID SLOPE........78-88.  
* MIN HUMIDITY.......  
* VALLEYS..........6-16%.  
* MID SLOPE........6-16%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHEAST 9 TO 14  
MPH IN THE AFTERNOON.  
* RIDGE TOP........NORTHEAST WINDS 10 TO 15 MPH.  
* HAINES INDEX.......5-6.  
* LAL................3-4.  
* CHC WETTING RAIN...15%.  
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 9700-10700 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHEAST WINDS 5 TO 10 MPH.  
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
MONDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. CHANCE  
OF SHOWERS AND THUNDERSTORMS IN THE EVENING. LOWS 43-53. WEST WINDS  
9 TO 15 MPH IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.    
TUESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
HIGHS 81-91. LOWS 39-49. WEST WINDS 10 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 82-92.  
LOWS 38-48. WEST WINDS 10 TO 15 MPH.    
THURSDAY
 
CLEAR. HIGHS 83-93. LOWS 38-48. WEST WINDS 10 TO 15 MPH.   
FRIDAY THROUGH SATURDAY
 
CLEAR. HIGHS 83-93. LOWS 39-49.  
 

 
 
CAZ272-100100-  
GREATER LAKE TAHOE AREA-  
508 AM PDT SUN AUG 9 2020  
   
TODAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........77-87.  
* MID SLOPE........76-86.  
* 24 HR TREND......2-4 DEGREES WARMER.  
* MIN HUMIDITY.......  
* VALLEYS..........16-26%.  
* MID SLOPE........16-26%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.  
* RIDGE TOP........NORTHEAST WINDS 10 TO 15 MPH.  
* HAINES INDEX.......5.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 10200-11200 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING EAST UP TO 10 MPH BY  
AFTERNOON.  
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE  
AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING THEN CLEAR.  
* MIN TEMPERATURE....  
* VALLEYS..........45-55.  
* MID SLOPE........47-57.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........72-82%.  
* MID SLOPE........44-54%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.  
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH.  
* HAINES INDEX.......5-6.  
* LAL................2.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......5500-6500 FT AGL IN THE EVENING THEN 200-500  
FT AGL.  
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH BECOMING LIGHT.  
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY. CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE....  
* VALLEYS..........77-87.  
* MID SLOPE........74-84.  
* MIN HUMIDITY.......  
* VALLEYS..........19-29%.  
* MID SLOPE........19-29%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.  
* RIDGE TOP........EAST WINDS 10 TO 15 MPH BECOMING LIGHT.  
* HAINES INDEX.......5.  
* LAL................4.  
* CHC WETTING RAIN...20%.  
* MIXING HEIGHT......1000-1500 FT AGL INCREASING TO 9700-10700 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
MONDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. LOWS  
46-56. WEST WINDS 8 TO 13 MPH IN THE EVENING BECOMING DOWNSLOPE 2 TO  
5 MPH.    
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.  
HIGHS 72-82. LOWS 40-50. WEST WINDS 10 TO 15 MPH.    
WEDNESDAY THROUGH THURSDAY
 
CLEAR. HIGHS 71-81. LOWS 40-50.  
SOUTHWEST WINDS 10 TO 15 MPH.    
FRIDAY THROUGH SATURDAY
 
CLEAR. HIGHS 73-83. LOWS 41-51.  
 

 
 
NVZ423-100100-  
WEST HUMBOLDT BASIN IN PERSHING COUNTY-  
508 AM PDT SUN AUG 9 2020  
 
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH  
WEDNESDAY EVENING FOR THUNDERSTORMS AND NEW FIRE STARTS FOLLOWED BY  
BREEZY WINDS AND LOW HUMIDITY...  
   
TODAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........95-101.  
* MID SLOPE........91-99.  
* 24 HR TREND......2-4 DEGREES WARMER.  
* MIN HUMIDITY.......  
* VALLEYS..........7-12%.  
* MID SLOPE........7-12%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTHWEST WINDS 9 TO 14 MPH. GUSTS TO 20 MPH IN  
THE LATE MORNING AND AFTERNOON.  
* RIDGE TOP........LIGHT WINDS BECOMING NORTHWEST 10 TO 15 MPH IN  
THE AFTERNOON.  
* HAINES INDEX.......5.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 9200-10200 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....NORTHWEST WINDS UP TO 10 MPH.  
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........CLEAR.  
* MIN TEMPERATURE....  
* VALLEYS..........57-67.  
* MID SLOPE........57-67.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........31-41%.  
* MID SLOPE........27-37%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTH WINDS 9 TO 14 MPH.  
* RIDGE TOP........NORTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO 30  
MPH.  
* HAINES INDEX.......5.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......6300-7300 FT AGL IN THE EVENING THEN 200-500  
FT AGL.  
* TRANSPORT WINDS....NORTH 10 TO 15 MPH.  
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........94-100.  
* MID SLOPE........89-99.  
* MIN HUMIDITY.......  
* VALLEYS..........6-12%.  
* MID SLOPE........6-12%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTH WINDS 9 TO 14 MPH.  
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH.  
* HAINES INDEX.......4-5.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 9500-10500 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....NORTH WINDS UP TO 10 MPH.  
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING. LOWS 57-65. NORTHWEST WINDS 9 TO  
17 MPH UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS 92-98. LOWS 54-64. WEST WINDS 10 TO 15 MPH.    
WEDNESDAY THROUGH THURSDAY
 
CLEAR. HIGHS 89-97. LOWS 53-63. WEST  
WINDS 8 TO 13 MPH.    
FRIDAY THROUGH SATURDAY
 
CLEAR. HIGHS 89-99. LOWS 53-63.  
 

 
 
NVZ429-100100-  
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-  
508 AM PDT SUN AUG 9 2020  
   
TODAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........92-102.  
* MID SLOPE........88-98.  
* 24 HR TREND......2-4 DEGREES WARMER.  
* MIN HUMIDITY.......  
* VALLEYS..........6-11%.  
* MID SLOPE........7-12%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTH 7 TO 12 MPH  
WITH GUSTS TO 20 MPH IN THE AFTERNOON.  
* RIDGE TOP........LIGHT WINDS BECOMING NORTHWEST 10 TO 15 MPH IN  
THE AFTERNOON.  
* HAINES INDEX.......5-6.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 10800-11800 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........CLEAR.  
* MIN TEMPERATURE....  
* VALLEYS..........55-65.  
* MID SLOPE........57-67.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........34-44%.  
* MID SLOPE........20-30%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTHWEST WINDS 9 TO 14 MPH.  
* RIDGE TOP........NORTHEAST WINDS 10 TO 15 MPH.  
* HAINES INDEX.......5-6.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......6500-7500 FT AGL IN THE EVENING THEN 200-500  
FT AGL.  
* TRANSPORT WINDS....NORTH 10 TO 15 MPH.  
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........91-101.  
* MID SLOPE........87-97.  
* MIN HUMIDITY.......  
* VALLEYS..........5-11%.  
* MID SLOPE........5-12%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTH 8 TO 13 MPH IN  
THE LATE MORNING AND AFTERNOON.  
* RIDGE TOP........LIGHT WINDS BECOMING NORTHWEST 10 TO 15 MPH LATE  
IN THE AFTERNOON.  
* HAINES INDEX.......5-6.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 9800-10800 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING. LOWS 56-66. NORTHWEST WINDS 8 TO  
13 MPH INCREASING TO 13 TO 20 MPH IN THE EVENING, THEN BECOMING WEST  
7 TO 12 MPH AFTER MIDNIGHT.    
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.  
HIGHS 88-98. LOWS 52-62. WEST WINDS 10 TO 15 MPH.    
WEDNESDAY THROUGH THURSDAY
 
CLEAR. HIGHS 88-98. LOWS 51-61.  
NORTHWEST WINDS 8 TO 13 MPH.    
FRIDAY THROUGH SATURDAY
 
CLEAR. HIGHS 89-99. LOWS 51-61.  
 

 
 
CAZ270-278-NVZ458-100100-  
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-  
NORTHERN WASHOE COUNTY-  
508 AM PDT SUN AUG 9 2020  
 
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH  
WEDNESDAY EVENING FOR THUNDERSTORMS AND NEW FIRE STARTS FOLLOWED BY  
BREEZY WINDS AND LOW HUMIDITY...  
   
TODAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........89-99.  
* MID SLOPE........84-94.  
* 24 HR TREND......2-4 DEGREES WARMER.  
* MIN HUMIDITY.......  
* VALLEYS..........9-14%.  
* MID SLOPE........9-17%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 7 TO 12 MPH  
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.  
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH.  
* HAINES INDEX.......4-5.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 8300-9300 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING NORTHWEST UP TO 10 MPH.  
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........CLEAR.  
* MIN TEMPERATURE....  
* VALLEYS..........51-61.  
* MID SLOPE........53-63.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........38-48%.  
* MID SLOPE........28-38%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTH WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH.  
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.  
* HAINES INDEX.......5.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......5700-6700 FT AGL IN THE EVENING THEN 200-500  
FT AGL.  
* TRANSPORT WINDS....NORTH 10 TO 15 MPH.  
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER........MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS IN THE  
AFTERNOON.  
* MAX TEMPERATURE....  
* VALLEYS..........89-98.  
* MID SLOPE........85-93.  
* MIN HUMIDITY.......  
* VALLEYS..........8-15%.  
* MID SLOPE........8-14%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 7 TO 12 MPH  
LATE IN THE AFTERNOON.  
* RIDGE TOP........EAST WINDS 10 TO 15 MPH SHIFTING TO THE WEST  
LATE IN THE AFTERNOON.  
* HAINES INDEX.......5.  
* LAL................2.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 8600-9600 FT AGL  
IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST UP TO 10 MPH LATE.  
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING. LOWS 51-61. WEST WINDS 9 TO 16 MPH  
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.    
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.  
HIGHS 86-96. LOWS 47-57. WEST WINDS 10 TO 15 MPH.    
WEDNESDAY THROUGH THURSDAY
 
CLEAR. HIGHS 85-95. LOWS 43-53. WEST  
WINDS 10 TO 20 MPH.    
FRIDAY
 
CLEAR. HIGHS 85-95. LOWS 44-54.    
SATURDAY
 
SUNNY. HIGHS 86-96.  
 

 
 
CAZ271-100100-  
WESTERN LASSEN, EASTERN PLUMAS, EASTERN SIERRA, AND EASTERN NEVADA  
COUNTIES-  
508 AM PDT SUN AUG 9 2020  
 
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH  
WEDNESDAY EVENING FOR THUNDERSTORMS AND NEW FIRE STARTS FOLLOWED BY  
BREEZY WINDS AND LOW HUMIDITY...  
   
TODAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........86-96.  
* MID SLOPE........85-93.  
* 24 HR TREND......2-4 DEGREES WARMER  
* MIN HUMIDITY.......  
* VALLEYS..........12-20%.  
* MID SLOPE........12-20%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 7 TO 12 MPH  
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.  
* RIDGE TOP........LIGHT WINDS.  
* HAINES INDEX.......4-5.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 9000-10000 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE  
AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING THEN CLEAR.  
* MIN TEMPERATURE....  
* VALLEYS..........46-56.  
* MID SLOPE........50-60.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........56-66%.  
* MID SLOPE........39-49%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....NORTHWEST WINDS 7 TO 12 MPH WITH GUSTS TO 20 MPH  
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.  
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH.  
* HAINES INDEX.......4.  
* LAL................2.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......5500-6500 FT AGL IN THE EVENING THEN 200-500  
FT AGL.  
* TRANSPORT WINDS....NORTH 10 TO 15 MPH.  
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
AFTERNOON.  
* MAX TEMPERATURE....  
* VALLEYS..........86-96.  
* MID SLOPE........83-93.  
* MIN HUMIDITY.......  
* VALLEYS..........11-21%.  
* MID SLOPE........11-21%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 5 TO 10 MPH  
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.  
* RIDGE TOP........LIGHT WINDS.  
* HAINES INDEX.......4.  
* LAL................3-4.  
* CHC WETTING RAIN...15%.  
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 9600-10600 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....LIGHT WINDS.  
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
 
   
EXTENDED
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS  
IN THE EVENING. LOWS 45-55. WEST WINDS 9 TO 14 MPH IN THE EVENING  
BECOMING DOWNSLOPE 2 TO 5 MPH.    
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.  
HIGHS 81-91. LOWS 41-51. SOUTHWEST WINDS 10 TO 15 MPH.    
WEDNESDAY THROUGH THURSDAY
 
CLEAR. HIGHS 80-90. LOWS 38-48.  
SOUTHWEST WINDS 10 TO 15 MPH.    
FRIDAY THROUGH SATURDAY
 
CLEAR. HIGHS 82-92. LOWS 38-48.  
 

 
 
CAZ274-100100-  
SOUTHERN MONO COUNTY-  
508 AM PDT SUN AUG 9 2020  
   
TODAY
 
 
* SKY/WEATHER........SUNNY.  
* MAX TEMPERATURE....  
* VALLEYS..........82-92.  
* MID SLOPE........78-88.  
* 24 HR TREND......LITTLE CHANGE.  
* MIN HUMIDITY.......  
* VALLEYS..........7-17%.  
* MID SLOPE........9-17%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHEAST 9 TO 14  
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.  
* RIDGE TOP........EAST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.  
* HAINES INDEX.......5-6.  
* LAL................1.  
* CHC WETTING RAIN...0%.  
* MIXING HEIGHT......1600-2600 FT AGL INCREASING TO 10400-11400 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHEAST WINDS 10-15 MPH.  
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.  
   
TONIGHT
 
 
* SKY/WEATHER........MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS IN THE  
EVENING.  
* MIN TEMPERATURE....  
* VALLEYS..........44-54.  
* MID SLOPE........46-56.  
* 24 HR TREND......LITTLE CHANGE.  
* MAX HUMIDITY.......  
* VALLEYS..........51-61%.  
* MID SLOPE........34-44%.  
* 24 HR TREND......LITTLE CHANGE.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO 20 MPH  
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.  
* RIDGE TOP........WEST WINDS 10 TO 15 MPH.  
* HAINES INDEX.......5-6.  
* LAL................2.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......5900-6900 FT AGL IN THE EVENING THEN 200-500  
FT AGL.  
* TRANSPORT WINDS....SOUTH WINDS UP TO 10 MPH BECOMING LIGHT.  
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.  
   
MONDAY
 
 
* SKY/WEATHER........MOSTLY SUNNY THEN PARTLY CLOUDY WITH A SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE....  
* VALLEYS..........82-92.  
* MID SLOPE........76-86.  
* MIN HUMIDITY.......  
* VALLEYS..........5-15%.  
* MID SLOPE........7-15%.  
* 20-FOOT WINDS......  
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING EAST 8 TO 13 MPH  
WITH GUSTS TO 20 MPH IN THE AFTERNOON.  
* RIDGE TOP........LIGHT WINDS BECOMING SOUTHEAST 10 TO 15 MPH IN  
THE LATE MORNING AND AFTERNOON.  
* HAINES INDEX.......5-6.  
* LAL................2.  
* CHC WETTING RAIN...5%.  
* MIXING HEIGHT......1700-2200 FT AGL INCREASING TO 12500-13500 FT  
AGL IN THE AFTERNOON.  
* TRANSPORT WINDS....SOUTHEAST WINDS AROUND 10 MPH.  
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.  
 
   
EXTENDED
 
   
MONDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN CLEARING. CHANCE  
OF SHOWERS AND THUNDERSTORMS IN THE EVENING. LOWS 44-54. WEST WINDS  
9 TO 14 MPH IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.    
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. HIGHS  
78-88. LOWS 41-51. WEST WINDS 10 TO 15 MPH.    
WEDNESDAY THROUGH THURSDAY
 
CLEAR. HIGHS 80-90. LOWS 40-50.  
SOUTHWEST WINDS 10 TO 15 MPH.    
FRIDAY THROUGH SATURDAY
 
CLEAR. HIGHS 80-90. LOWS 42-52.  
 

 
 
.8 TO 14 DAY OUTLOOK FOR (SUN AUG 16 THROUGH SAT AUG 22)  
NEAR NORMAL TEMPERATURES AND LITTLE OR NO PRECIPITATION.  
 
=  

 
 
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