150
FNUS55 KREV 222029
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
129 PM PDT WED JUL 22 2026
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY EVENING...
...ISOLATED DRY THUNDERSTORMS THIS AFTERNOON MAY PRODUCE NEW
LIGHTNING FIRE STARTS ACROSS NORTHEAST CA, MONERAL/MONO COUNTIES, AND
THE BASIN AND RANGE...
DISCUSSION
TODAY, THERE IS A 15-25% CHANCE FOR SHOWERS AND THUNDERSTORMS IN
NORTHERN WASHOE COUNTY AND EASTERN LASSEN COUNTY, DOWN THROUGH
WESTERN NV AND INTO MONO AND MINERAL COUNTIES. AFTER TODAY WE START
A WARMING AND DRYING TREND THAT WILL CONTINUE INTO NEXT WEEK. BY THIS
FRIDAY AND SATURDAY, THE COMBINATION OF LOW HUMIDITIES AND
INCREASING SOUTHWEST WINDS WILL GENERATE A WINDOW OF CRITICAL FIRE
WEATHER CONDITIONS FOR NE CALIFORNIA AND NW NEVADA. OTHER AREAS IN
THE REGION WILL ALSO HAVE AN INCREASE IN SOUTHWEST WINDS EACH
AFTERNOON.
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
HTTPS://WWW.WEATHER.GOV/WRH/FIRE?WFO=REV
NVZ420-231500-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
129 PM PDT WED JUL 22 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........57-67.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........57-67%.
* MID SLOPE........48-58%.
* 24 HR TREND......6% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......4500-5500 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........88-98.
* MID SLOPE........85-95.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........6-16%.
* MID SLOPE........12-22%.
* 24 HR TREND......13% DRIER.
* 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........SOUTH WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 6600-7600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH IN
THE AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........57-67.
* MAX HUMIDITY.......
* VALLEYS..........33-43%.
* MID SLOPE........24-34%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......4700-5700 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........89-99.
* MID SLOPE........88-98.
* MIN HUMIDITY.......
* VALLEYS..........4-14%.
* MID SLOPE........8-16%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 5 TO 10
MPH WITH GUSTS TO 20 MPH LATE IN THE
AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......600 FT AGL INCREASING TO 6300-7300 FT AGL IN
THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 54-64. WEST WINDS 9 TO 17 MPH UNTIL
EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY THROUGH MONDAY
CLEAR. HIGHS 88-98. LOWS 50-60. WEST
WINDS 10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 87-97. LOWS 50-60.
NVZ421-231500-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
129 PM PDT WED JUL 22 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........46-56.
* MID SLOPE........59-69.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........59-69%.
* MID SLOPE........43-53%.
* 24 HR TREND......10% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING SOUTH 10 TO 15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT......4200-5200 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........86-96.
* MID SLOPE........80-90.
* 24 HR TREND......5 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........16-24%.
* MID SLOPE........16-26%.
* 24 HR TREND......9% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 7 TO 12
MPH WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1900-2900 FT AGL INCREASING TO 8500-9500 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........60-70.
* MAX HUMIDITY.......
* VALLEYS..........39-49%.
* MID SLOPE........31-41%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 5 TO 10 MPH WITH GUSTS TO 20 MPH IN
THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......5200-6200 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........88-98.
* MID SLOPE........81-91.
* MIN HUMIDITY.......
* VALLEYS..........11-19%.
* MID SLOPE........11-21%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 7 TO 12
MPH WITH GUSTS TO 25 MPH LATE IN THE
AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 8700-9700 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 49-59. SOUTHWEST WINDS 9 TO 14 MPH.
SATURDAY THROUGH MONDAY
CLEAR. HIGHS 87-97. LOWS 45-55. SOUTHWEST
WINDS 10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 88-98. LOWS 45-55.
CAZ272-231500-
GREATER LAKE TAHOE AND TRUCKEE AREA-
129 PM PDT WED JUL 22 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........46-56.
* MID SLOPE........48-58.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........86-96%.
* MID SLOPE........61-71%.
* 24 HR TREND......8% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......2300-3300 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........76-86.
* MID SLOPE........74-84.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........18-28%.
* MID SLOPE........16-26%.
* 24 HR TREND......20% DRIER.
* 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........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 4800-5800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 20 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........47-57.
* MID SLOPE........49-59.
* MAX HUMIDITY.......
* VALLEYS..........51-61%.
* MID SLOPE........28-38%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......2000-3000 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........78-88.
* MID SLOPE........76-86.
* MIN HUMIDITY.......
* VALLEYS..........14-24%.
* MID SLOPE........15-25%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 7 TO 12
MPH WITH GUSTS TO 20 MPH LATE IN THE
AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......600 FT AGL INCREASING TO 5700-6700 FT AGL IN
THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 48-58. WEST WINDS 8 TO 13 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY THROUGH MONDAY
CLEAR. HIGHS 75-85. LOWS 45-55. SLOPE
WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 77-87. LOWS 45-55.
NVZ423-231500-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
129 PM PDT WED JUL 22 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........61-70.
* MID SLOPE........62-71.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........42-52%.
* MID SLOPE........34-44%.
* 24 HR TREND......18% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS. GUSTS TO 20 MPH IN THE LATE EVENING
AND EARLY MORNING.
* MIXING HEIGHT......4400-5400 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........95-103.
* MID SLOPE........90-100.
* 24 HR TREND......4 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........11-17%.
* MID SLOPE........12-18%.
* 24 HR TREND......10% DRIER.
* 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 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......1600-2600 FT AGL INCREASING TO 8300-9300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........61-70.
* MID SLOPE........62-72.
* MAX HUMIDITY.......
* VALLEYS..........20-30%.
* MID SLOPE........16-26%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......5100-6100 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........97-105.
* MID SLOPE........93-103.
* MIN HUMIDITY.......
* VALLEYS..........7-12%.
* MID SLOPE........7-12%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 8 TO 13
MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN
THE AFTERNOON.
* MIXING HEIGHT......600-900 FT AGL INCREASING TO 7300-8300 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH IN
THE AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 62-71. WEST WINDS 9 TO 14 MPH UNTIL
EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY THROUGH MONDAY
CLEAR. HIGHS 94-104. LOWS 57-67. WEST
WINDS 8 TO 13 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 93-103. LOWS 57-67.
NVZ429-231500-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
129 PM PDT WED JUL 22 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........58-68.
* MID SLOPE........63-73.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........51-61%.
* MID SLOPE........39-49%.
* 24 HR TREND......17% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 7 TO 12 MPH UNTIL EARLY MORNING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH UNTIL EARLY MORNING
BECOMING LIGHT.
* MIXING HEIGHT......4500-5500 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........92-102.
* MID SLOPE........88-98.
* 24 HR TREND......4 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........13-23%.
* MID SLOPE........15-23%.
* 24 HR TREND......7% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1700-2200 FT AGL INCREASING TO 8200-9200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR. SLIGHT
CHANCE OF SHOWERS IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........57-67.
* MID SLOPE........64-74.
* MAX HUMIDITY.......
* VALLEYS..........33-43%.
* MID SLOPE........23-33%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 7 TO 12 MPH UNTIL EARLY MORNING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......5400-6400 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........95-105.
* MID SLOPE........91-101.
* MIN HUMIDITY.......
* VALLEYS..........8-17%.
* MID SLOPE........9-19%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 7200-8200 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH IN
THE AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR IN THE EVENING THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS IN THE EVENING. LOWS 59-69. WEST WINDS 8 TO
13 MPH UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY THROUGH MONDAY
CLEAR. HIGHS 93-103. LOWS 55-65. WEST
WINDS 8 TO 13 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 92-102. LOWS 55-65.
CAZ270-278-NVZ458-231500-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
129 PM PDT WED JUL 22 2026
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY EVENING...
TONIGHT
* SKY/WEATHER........MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........47-57.
* MID SLOPE........53-63.
* 24 HR TREND......6 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........53-63%.
* MID SLOPE........45-55%.
* 24 HR TREND......9% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 16 MPH WITH GUSTS TO 25 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH.
* MIXING HEIGHT......5000-6000 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........88-98.
* MID SLOPE........85-93.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........6-14%.
* MID SLOPE........7-13%.
* 24 HR TREND......15% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 15
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 7600-8600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH 15 TO 20 MPH IN THE
AFTERNOON.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........47-57.
* MID SLOPE........53-63.
* MAX HUMIDITY.......
* VALLEYS..........29-39%.
* MID SLOPE........21-31%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 16 MPH WITH GUSTS TO 25 MPH IN
THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......4700-5700 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........91-101.
* MID SLOPE........88-96.
* MIN HUMIDITY.......
* VALLEYS..........5-11%.
* MID SLOPE........6-11%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 15
MPH WITH GUSTS TO 30 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......200-500 FT AGL THEN 6200-7200 FT AGL IN THE
AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 25 MPH IN
THE AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 49-59. SOUTHWEST WINDS 13 TO 20 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY THROUGH MONDAY
CLEAR. HIGHS 88-98. LOWS 46-56. WEST
WINDS 10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 88-98. LOWS 46-56.
CAZ271-231500-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
129 PM PDT WED JUL 22 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........42-52.
* MID SLOPE........48-58.
* 24 HR TREND......9 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........70-80%.
* MID SLOPE........58-68%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH IN
THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......3400-4400 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........82-92.
* MID SLOPE........79-89.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........10-20%.
* MID SLOPE........9-19%.
* 24 HR TREND......17% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 9 TO 14 MPH IN
THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1700-2200 FT AGL INCREASING TO 5800-6800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 20 MPH IN
THE AFTERNOON.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........44-54.
* MID SLOPE........49-59.
* MAX HUMIDITY.......
* VALLEYS..........41-51%.
* MID SLOPE........31-41%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 8 TO 13 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......2900-3900 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........84-94.
* MID SLOPE........81-91.
* MIN HUMIDITY.......
* VALLEYS..........9-17%.
* MID SLOPE........9-17%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 25 MPH LATE IN THE
AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......200-500 FT AGL THEN 6100-7100 FT AGL IN THE
AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 20 MPH IN
THE AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 44-54. SOUTHWEST WINDS 9 TO 15 MPH IN
THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY THROUGH MONDAY
CLEAR. HIGHS 81-91. LOWS 42-52. SOUTHWEST
WINDS 10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 82-92. LOWS 42-52.
CAZ274-231500-
SOUTHERN MONO COUNTY-
129 PM PDT WED JUL 22 2026
TONIGHT
* SKY/WEATHER........CLEAR. PATCHY SMOKE AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........50-60.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........64-74%.
* MID SLOPE........50-60%.
* 24 HR TREND......14% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS. GUSTS TO 20 MPH IN THE EVENING.
* MIXING HEIGHT......4100-5100 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY. PATCHY SMOKE.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........81-91.
* MID SLOPE........79-89.
* 24 HR TREND......4 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........15-25%.
* MID SLOPE........16-26%.
* 24 HR TREND......9% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 8 TO 13 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE
LATE MORNING AND AFTERNOON.
* MIXING HEIGHT......1800-2800 FT AGL INCREASING TO 8100-9100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLEAR. PATCHY SMOKE IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........50-60.
* MID SLOPE........51-61.
* MAX HUMIDITY.......
* VALLEYS..........47-57%.
* MID SLOPE........35-45%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 5 TO 10 MPH WITH GUSTS TO 20 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH
AFTER MIDNIGHT.
* MIXING HEIGHT......4400-5400 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........82-92.
* MID SLOPE........79-89.
* MIN HUMIDITY.......
* VALLEYS..........15-25%.
* MID SLOPE........16-26%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 8 TO 13 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 7500-8500 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING CLEAR.
LOWS 51-61. SOUTHWEST WINDS 8 TO 13 MPH UNTIL EARLY MORNING BECOMING
DOWNSLOPE 2 TO 5 MPH.
SATURDAY THROUGH MONDAY
CLEAR. HIGHS 82-92. LOWS 48-58. SOUTHWEST
WINDS 10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 83-93. LOWS 48-58.
.8 TO 14 DAY OUTLOOK FOR (THU JUL 30 THROUGH WED AUG 5)
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
=
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