649
FNUS55 KREV 042102
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
202 PM PDT FRI SEP 4 2026
...GUSTY WINDS AND DRY CONDITIONS FOR THE SOUTHERN SIERRA FRONT AND
MONO COUNTY SUNDAY...
DISCUSSION
SHOWERS OVER NORTHWEST NEVADA WILL DIMINISH THIS EVENING. FOR
SUNDAY, A WEATHER SYSTEM BRINGS GUSTY WINDS AND INCREASED FIRE RISK
TO THE SOUTHERN SIERRA FRONT AND MONO COUNTY. SHOWERS AND
THUNDERSTORMS WILL MOVE THROUGH THE SURPRISE VALLEY, AND THE NORTHERN
PORTIONS OF LASSEN AND WASHOE COUNTIES.
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
NVZ420-051800-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
202 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........39-49.
* MID SLOPE........42-52.
* 24 HR TREND......7 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........70-80%.
* MID SLOPE........55-65%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 13 TO 20 MPH WITH GUSTS TO 30 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......2600-3600 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH IN THE EVENING BECOMING
LIGHT.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........68-78.
* MID SLOPE........66-76.
* 24 HR TREND......4 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........24-34%.
* 24 HR TREND......7% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 6100-7100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........39-49.
* MID SLOPE........44-54.
* MAX HUMIDITY.......
* VALLEYS..........63-73%.
* MID SLOPE........46-56%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 7 TO 12 MPH WITH GUSTS TO 20 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......3600-4600 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........68-78.
* MID SLOPE........65-75.
* MIN HUMIDITY.......
* VALLEYS..........15-25%.
* MID SLOPE........20-30%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 10 TO 17
MPH WITH GUSTS TO 30 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 6800-7800 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
SUNDAY NIGHT
CLEAR. LOWS 36-46. WEST WINDS 12 TO 20 MPH BECOMING
DOWNSLOPE 2 TO 5 MPH.
LABOR DAY
CLEAR. HIGHS 67-77. LOWS 36-46. SLOPE WINDS.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 73-83.
LOWS 40-50. SLOPE WINDS.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 73-83.
LOWS 46-56. SLOPE WINDS.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 75-85.
LOWS 47-57.
FRIDAY
SUNNY. HIGHS 74-84.
NVZ421-051800-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
202 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........35-45.
* MID SLOPE........43-53.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........70-80%.
* MID SLOPE........52-62%.
* 24 HR TREND......8% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 17 MPH WITH GUSTS TO 30 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 50
MPH.
* MIXING HEIGHT......3000-4000 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH IN THE EVENING BECOMING
LIGHT.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........71-81.
* MID SLOPE........65-75.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........14-24%.
* MID SLOPE........13-23%.
* 24 HR TREND......5% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 9 TO 14 MPH
WITH GUSTS TO 25 MPH.
* RIDGE TOP........SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 7500-8500 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.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........46-56.
* MAX HUMIDITY.......
* VALLEYS..........54-64%.
* MID SLOPE........40-50%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......4100-5100 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........70-80.
* MID SLOPE........63-73.
* MIN HUMIDITY.......
* VALLEYS..........11-21%.
* MID SLOPE........12-22%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 13 TO 20
MPH WITH GUSTS TO 30 MPH.
* RIDGE TOP........SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 7600-8600 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 25 MPH IN
THE AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 32-42. SOUTHWEST WINDS 13 TO 20 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
LABOR DAY
CLEAR. HIGHS 69-79. LOWS 32-42. SLOPE WINDS.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 72-82.
LOWS 36-46. SLOPE WINDS.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 73-83.
LOWS 40-50. SLOPE WINDS.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 73-83.
LOWS 41-51.
FRIDAY
SUNNY. HIGHS 74-84.
CAZ272-051800-
GREATER LAKE TAHOE AND TRUCKEE AREA-
202 PM PDT FRI SEP 4 2026
TONIGHT
* 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..........33-43.
* MID SLOPE........39-49.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........83-93%.
* MID SLOPE........72-82%.
* 24 HR TREND......7% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50
MPH.
* MIXING HEIGHT......1800-2800 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........59-69.
* MID SLOPE........56-66.
* 24 HR TREND......8 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........35-45%.
* MID SLOPE........34-44%.
* 24 HR TREND......22% 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 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......1800-2800 FT AGL INCREASING TO 5800-6800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 20 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........38-48.
* MAX HUMIDITY.......
* VALLEYS..........76-86%.
* MID SLOPE........61-71%.
* 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........SOUTHWEST WINDS 10 TO 20 MPH. GUSTS TO 40 MPH
INCREASING TO 45 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......2800-3800 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........56-66.
* MID SLOPE........54-64.
* MIN HUMIDITY.......
* VALLEYS..........34-44%.
* MID SLOPE........34-44%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 30 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 45
MPH.
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 5500-6500 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO 20 TO 30
MPH IN THE AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 32-42. SOUTHWEST WINDS 9 TO 15 MPH UNTIL
EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
LABOR DAY
CLEAR. HIGHS 63-72. LOWS 32-42. SLOPE WINDS.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 65-75.
LOWS 36-46. SLOPE WINDS.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 65-75.
LOWS 40-50. SLOPE WINDS.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 66-76.
LOWS 42-52.
FRIDAY
PARTLY CLOUDY. HIGHS 64-74.
NVZ423-051800-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
202 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
PATCHY BLOWING DUST IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........39-49.
* MID SLOPE........46-56.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........55-65%.
* MID SLOPE........41-51%.
* 24 HR TREND......6% 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......3100-4100 FT AGL DECREASING TO 700-1200 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 20 MPH.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........68-78.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........19-29%.
* MID SLOPE........21-29%.
* 24 HR TREND......7% DRIER.
* 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......1700-2700 FT AGL INCREASING TO 6500-7500 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........43-53.
* MID SLOPE........47-57.
* MAX HUMIDITY.......
* VALLEYS..........49-59%.
* MID SLOPE........35-45%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH BECOMING NORTH 7 TO 12 MPH
IN THE LATE EVENING AND EARLY MORNING, THEN
BECOMING DOWNSLOPE 2 TO 5 MPH IN THE MORNING.
* RIDGE TOP........NORTHWEST 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....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER........MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........73-83.
* MID SLOPE........69-79.
* MIN HUMIDITY.......
* VALLEYS..........17-27%.
* MID SLOPE........19-29%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 8 TO 13
MPH LATE IN THE AFTERNOON.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH. GUSTS TO 20 MPH IN
THE MORNING THEN 25 MPH IN THE AFTERNOON.
* MIXING HEIGHT......200-500 FT AGL THEN 7000-8000 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
SUNDAY NIGHT
CLEAR. LOWS 39-49. WEST WINDS 9 TO 16 MPH BECOMING
DOWNSLOPE 2 TO 5 MPH.
LABOR DAY
CLEAR. HIGHS 70-78. LOWS 39-49. SLOPE WINDS.
TUESDAY
PARTLY CLOUDY. HIGHS 78-84. LOWS 40-50. SLOPE WINDS.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 80-86.
LOWS 46-56. SLOPE WINDS.
THURSDAY THROUGH FRIDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS.
HIGHS 81-88. LOWS 49-59.
NVZ429-051800-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
202 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER........CLEAR. PATCHY BLOWING DUST IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........40-50.
* MID SLOPE........44-54.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........66-76%.
* MID SLOPE........46-56%.
* 24 HR TREND......5% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 12 TO 18 MPH DECREASING TO 9 TO
16 MPH WITH GUSTS TO 25 MPH IN THE LATE
EVENING AND OVERNIGHT.
* RIDGE TOP........NORTHWEST WINDS 10 TO 16 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......3500-4500 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........74-84.
* MID SLOPE........71-81.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........13-23%.
* MID SLOPE........13-23%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......1500-2500 FT AGL INCREASING TO 6200-7200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........43-53.
* MID SLOPE........47-57.
* MAX HUMIDITY.......
* VALLEYS..........59-69%.
* MID SLOPE........37-47%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTH WINDS 7 TO 12 MPH WITH GUSTS TO 20 MPH IN
THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH SHIFTING TO THE
SOUTH 10 TO 20 MPH AFTER MIDNIGHT. GUSTS TO 30
MPH.
* MIXING HEIGHT......3700-4700 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........75-85.
* MID SLOPE........72-82.
* 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 25 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......600-800 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
SUNDAY NIGHT
CLEAR. LOWS 40-50. WEST WINDS 12 TO 18 MPH SHIFTING
TO THE NORTHWEST 9 TO 16 MPH IN THE LATE EVENING AND OVERNIGHT.
LABOR DAY
CLEAR. HIGHS 71-81. LOWS 40-50. SLOPE WINDS.
TUESDAY
PARTLY CLOUDY. HIGHS 76-86. LOWS 41-51. SLOPE WINDS.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 77-87.
LOWS 45-55. SLOPE WINDS.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 79-89.
LOWS 47-57.
FRIDAY
SUNNY. HIGHS 79-89.
CAZ270-278-NVZ458-051800-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
202 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........33-43.
* MID SLOPE........35-45.
* 24 HR TREND......6 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........70-80%.
* MID SLOPE........59-69%.
* 24 HR TREND......9% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 12 TO 18 MPH WITH GUSTS TO 30
MPH BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......3100-4100 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........65-75.
* MID SLOPE........61-69.
* 24 HR TREND......4 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........21-31%.
* MID SLOPE........24-34%.
* 24 HR TREND......7% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 8 TO 13 MPH
WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 6100-7100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........32-42.
* MID SLOPE........41-51.
* MAX HUMIDITY.......
* VALLEYS..........63-73%.
* MID SLOPE........50-60%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO 25 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING WEST 10 TO 15 MPH AFTER
MIDNIGHT. GUSTS TO 30 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......3500-4500 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY THEN BECOMING MOSTLY CLOUDY. CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...15%.
* MAX TEMPERATURE....
* VALLEYS..........64-74.
* MID SLOPE........59-69.
* MIN HUMIDITY.......
* VALLEYS..........20-30%.
* MID SLOPE........28-38%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 17
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 6000-7000 FT AGL IN THE
AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 20 TO 30 MPH IN
THE AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING. CHANCE OF SHOWERS. LOWS
29-39. WEST WINDS 12 TO 18 MPH BECOMING DOWNSLOPE 2 TO 5 MPH.
LABOR DAY
CLEAR. HIGHS 65-75. LOWS 29-39. SLOPE WINDS.
TUESDAY
PARTLY CLOUDY. HIGHS 73-83. LOWS 33-43. SLOPE WINDS.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 74-84.
LOWS 38-48. SLOPE WINDS.
THURSDAY THROUGH FRIDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS.
HIGHS 75-85. LOWS 41-51.
CAZ271-051800-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
202 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........28-38.
* MID SLOPE........37-47.
* 24 HR TREND......5 DEGREES COOLER.
* MAX HUMIDITY.......
* VALLEYS..........78-88%.
* MID SLOPE........64-74%.
* 24 HR TREND......8% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO 25 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......2500-3500 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.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........62-72.
* MID SLOPE........59-69.
* 24 HR TREND......7 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........28-38%.
* MID SLOPE........27-37%.
* 24 HR TREND......13% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 8 TO 13
MPH WITH GUSTS TO 20 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 6800-7800 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.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........27-37.
* MID SLOPE........40-50.
* MAX HUMIDITY.......
* VALLEYS..........75-85%.
* MID SLOPE........58-68%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 7 TO 12 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......3000-4000 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY. CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..10%.
* CHC WETTING RAIN...20%.
* MAX TEMPERATURE....
* VALLEYS..........59-69.
* MID SLOPE........57-67.
* MIN HUMIDITY.......
* VALLEYS..........28-38%.
* MID SLOPE........29-39%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......600-900 FT AGL INCREASING TO 5100-6100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 25 MPH IN
THE AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
SUNDAY NIGHT
PARTLY CLOUDY. CHANCE OF SHOWERS IN THE EVENING. LOWS 24-34.
SOUTHWEST WINDS 7 TO 12 MPH BECOMING DOWNSLOPE 2 TO 5 MPH.
LABOR DAY
CLEAR. HIGHS 66-76. LOWS 24-34. SLOPE WINDS.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 71-81.
LOWS 29-39. SLOPE WINDS.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 71-81.
LOWS 33-43. SLOPE WINDS.
THURSDAY THROUGH FRIDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS.
HIGHS 71-81. LOWS 35-45.
CAZ274-051800-
SOUTHERN MONO COUNTY-
202 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........36-46.
* MID SLOPE........38-48.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........68-78%.
* MID SLOPE........51-61%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 12 TO 18 MPH WITH GUSTS TO 35
MPH BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......2900-3900 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........68-78.
* MID SLOPE........65-75.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........11-21%.
* MID SLOPE........14-24%.
* 24 HR TREND......8% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 9 TO 15 MPH
WITH GUSTS TO 30 MPH EARLY IN THE AFTERNOON,
THEN INCREASING TO SOUTHWEST 15 TO 25 MPH WITH
GUSTS TO 35 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH.
* MIXING HEIGHT......1600-2600 FT AGL INCREASING TO 7200-8200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH INCREASING TO 15 TO 25 MPH
IN THE AFTERNOON.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........36-46.
* MID SLOPE........36-46.
* MAX HUMIDITY.......
* VALLEYS..........54-64%.
* MID SLOPE........40-50%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 13 TO 20 MPH WITH GUSTS TO 35
MPH DECREASING TO 9 TO 15 MPH WITH GUSTS TO 30
MPH IN THE LATE EVENING AND OVERNIGHT.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......3700-4700 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........65-75.
* MID SLOPE........62-72.
* MIN HUMIDITY.......
* VALLEYS..........10-20%.
* MID SLOPE........13-23%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH WITH GUSTS TO 30 MPH
INCREASING TO 15 TO 25 MPH WITH GUSTS TO 35
MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH. GUSTS TO 45 MPH.
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 6100-7100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO 20 TO 30
MPH IN THE AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 33-43. SOUTHWEST WINDS 13 TO 20 MPH
DECREASING TO 9 TO 14 MPH IN THE LATE EVENING AND OVERNIGHT.
LABOR DAY
CLEAR. HIGHS 68-78. LOWS 33-43. SLOPE WINDS.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 69-79.
LOWS 36-46. SLOPE WINDS.
WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 69-79.
LOWS 41-51. SLOPE WINDS.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 68-78.
LOWS 41-51.
FRIDAY
SUNNY. HIGHS 70-80.
.8 TO 14 DAY OUTLOOK FOR (SAT SEP 12 THROUGH FRI SEP 18) ABOVE
NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
=
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