697
FNUS55 KREV 092046
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
146 PM PDT WED SEP 9 2026
..CRITICAL FIRE WEATHER AREAWIDE DUE TO STRONG WINDS ON SATURDAY
DISCUSSION
AFTERNOON BREEZES INCREASE EACH DAY THROUGH SATURDAY, PEAKING ON SATURDAY
WITH WIDESPREAD GUSTS OF 40-45 MPH. WINDS WILL BE BREEZY (GUSTS 25-35 MPH)
THURSDAY AND FRIDAY, WHICH MAY BRING LOCALIZED CRITICAL FIRE CONDITIONS.
EXPECTED WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS SATURDAY DUE TO THE
STRONG WINDS. MINIMUM HUMIDITIES WILL REMAIN IN THE TEENS. LIGHT SHOWER
CHANCES THURSDAY (10-15%), WITH THE BEST CHANCES ACROSS MONO, MINERAL
AND SOUTHERN LYON 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
NVZ420-101430-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
146 PM PDT WED SEP 9 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........56-66.
* MID SLOPE........58-67.
* 24 HR TREND......5 DEGREES WARMER.
* MAX HUMIDITY.......
* VALLEYS..........36-46%.
* MID SLOPE........24-34%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH
AFTER MIDNIGHT.
* MIXING HEIGHT......3800-4800 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........83-93.
* MID SLOPE........80-90.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........13-23%.
* MID SLOPE........18-26%.
* 24 HR TREND......7% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 10 TO 17 MPH
WITH GUSTS TO 30 MPH.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 5900-6900 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 15 TO 20 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........55-63.
* MAX HUMIDITY.......
* VALLEYS..........53-63%.
* MID SLOPE........44-54%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 12 TO 18 MPH WITH GUSTS TO 30 MPH
SHIFTING TO THE SOUTHWEST 9 TO 14 MPH IN THE
LATE EVENING AND OVERNIGHT.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......3200-4200 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........81-91.
* MID SLOPE........77-87.
* MIN HUMIDITY.......
* VALLEYS..........8-18%.
* MID SLOPE........14-24%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO 20 MPH
INCREASING TO WEST 15 TO 25 MPH LATE IN THE
AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH. GUSTS TO 40 MPH.
* MIXING HEIGHT......200-500 FT AGL THEN 6400-7400 FT AGL IN THE
AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 15 TO 25 MPH IN THE
AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 50-60. WEST WINDS 15 TO 25 MPH SHIFTING
TO THE SOUTHWEST 9 TO 14 MPH IN THE LATE EVENING AND OVERNIGHT.
SATURDAY
CLEAR. HIGHS 74-84. LOWS 40-50. SOUTHWEST WINDS 15 TO
25 MPH.
SUNDAY
CLEAR. HIGHS 64-74. LOWS 40-50. NORTH WINDS 10 TO 15 MPH.
MONDAY
CLEAR. HIGHS 67-77. LOWS 42-52. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 70-80. LOWS 44-54.
NVZ421-101430-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
146 PM PDT WED SEP 9 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........58-68.
* 24 HR TREND......4 DEGREES WARMER.
* MAX HUMIDITY.......
* VALLEYS..........34-44%.
* MID SLOPE........25-35%.
* 24 HR TREND......6% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTH WINDS 7 TO 12 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH IN THE EVENING
BECOMING LIGHT.
* MIXING HEIGHT......3900-4900 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........82-92.
* MID SLOPE........76-86.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........16-26%.
* 24 HR TREND......6% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 9 TO 14 MPH
WITH GUSTS TO 25 MPH IN THE LATE MORNING AND
AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE
LATE MORNING AND AFTERNOON.
* MIXING HEIGHT......2100-3100 FT AGL INCREASING TO 8000-9000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........46-56.
* MID SLOPE........54-64.
* MAX HUMIDITY.......
* VALLEYS..........57-67%.
* MID SLOPE........44-54%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH. GUSTS TO 25 MPH
UNTIL EARLY MORNING.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH. GUSTS TO 40 MPH IN
THE MORNING.
* MIXING HEIGHT......3300-4300 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........79-89.
* MID SLOPE........72-82.
* MIN HUMIDITY.......
* VALLEYS..........12-22%.
* MID SLOPE........13-23%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH
INCREASING TO WEST 12 TO 18 MPH WITH GUSTS TO
30 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 7200-8200 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO 15 TO 25
MPH IN THE AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 44-54. WEST WINDS 13 TO 20 MPH BECOMING
SOUTHWEST 9 TO 14 MPH IN THE LATE EVENING AND OVERNIGHT.
SATURDAY
CLEAR. HIGHS 74-84. LOWS 38-48. SOUTHWEST WINDS 10 TO
20 MPH.
SUNDAY
CLEAR. HIGHS 66-76. LOWS 36-46. NORTH WINDS 10 TO 15 MPH.
MONDAY
CLEAR. HIGHS 69-79. LOWS 36-46. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 71-81. LOWS 38-48.
CAZ272-101430-
GREATER LAKE TAHOE AND TRUCKEE AREA-
146 PM PDT WED SEP 9 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........50-60.
* MID SLOPE........52-62.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........53-63%.
* MID SLOPE........34-44%.
* 24 HR TREND......9% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* MIXING HEIGHT......3800-4800 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........73-83.
* MID SLOPE........71-81.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........24-34%.
* MID SLOPE........27-37%.
* 24 HR TREND......10% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 8 TO 13 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE
LATE MORNING AND AFTERNOON.
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 5100-6100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 15 TO 20 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........47-57.
* MID SLOPE........48-58.
* MAX HUMIDITY.......
* VALLEYS..........65-75%.
* MID SLOPE........51-61%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO 20 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......2200-3200 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 15 TO 25 MPH SHIFTING TO THE SOUTHWEST 10
TO 15 MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........68-78.
* MID SLOPE........65-75.
* MIN HUMIDITY.......
* VALLEYS..........22-32%.
* MID SLOPE........24-34%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 10 TO 17
MPH WITH GUSTS TO 25 MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......700 FT AGL INCREASING TO 5000-6000 FT AGL IN
THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO 20 TO 25
MPH IN THE AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 45-55. SOUTHWEST WINDS 10 TO 17 MPH
DECREASING TO 9 TO 14 MPH IN THE LATE EVENING AND OVERNIGHT.
SATURDAY
CLEAR. HIGHS 61-69. LOWS 34-44. SOUTHWEST WINDS 10 TO
20 MPH.
SUNDAY
CLEAR. HIGHS 60-68. LOWS 34-44. EAST WINDS 10 TO 15 MPH.
MONDAY
CLEAR. HIGHS 63-72. LOWS 36-46. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 61-69. LOWS 38-48.
NVZ423-101430-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
146 PM PDT WED SEP 9 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........55-65.
* MID SLOPE........57-66.
* 24 HR TREND......5 DEGREES WARMER.
* MAX HUMIDITY.......
* VALLEYS..........24-34%.
* MID SLOPE........20-30%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING WEST 10 TO 15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT......3700-4700 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........89-95.
* MID SLOPE........83-93.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........13-19%.
* MID SLOPE........14-19%.
* 24 HR TREND......4% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 15
MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH.
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 6900-7900 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 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..........55-64.
* MID SLOPE........57-64.
* MAX HUMIDITY.......
* VALLEYS..........44-54%.
* MID SLOPE........36-46%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 15 MPH BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......4100-5100 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........86-94.
* MID SLOPE........80-90.
* MIN HUMIDITY.......
* VALLEYS..........13-18%.
* MID SLOPE........14-21%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 12 TO 18
MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......200-500 FT AGL THEN 7300-8300 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 53-62. WEST WINDS 13 TO 20 MPH BECOMING
DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 80-88. LOWS 41-51. SOUTHWEST WINDS 15 TO
25 MPH.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 68-78. LOWS 41-51. NORTH WINDS
10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 74-82. LOWS 44-54.
NVZ429-101430-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
146 PM PDT WED SEP 9 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........55-65.
* MID SLOPE........57-67.
* 24 HR TREND......5 DEGREES WARMER.
* MAX HUMIDITY.......
* VALLEYS..........28-38%.
* MID SLOPE........21-31%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTH WINDS 5 TO 10 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......3500-4500 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........86-96.
* MID SLOPE........83-93.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........11-21%.
* MID SLOPE........12-20%.
* 24 HR TREND......4% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 9 TO 14 MPH IN
THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE
AFTERNOON.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 7400-8400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........54-64.
* MID SLOPE........57-67.
* MAX HUMIDITY.......
* VALLEYS..........51-61%.
* MID SLOPE........40-50%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......4100-5100 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........85-95.
* MID SLOPE........81-91.
* MIN HUMIDITY.......
* VALLEYS..........11-17%.
* MID SLOPE........12-18%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 15
MPH WITH GUSTS TO 30 MPH IN THE LATE MORNING
AND AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......600 FT AGL INCREASING TO 7900-8900 FT AGL IN
THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 15 TO 25 MPH IN THE
AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 50-60. WEST WINDS 15 TO 25 MPH BECOMING
DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 82-92. LOWS 41-51. WEST WINDS 15 TO 25 MPH.
SUNDAY
CLEAR. HIGHS 68-78. LOWS 39-49. NORTH WINDS 10 TO 15 MPH.
MONDAY
CLEAR. HIGHS 71-81. LOWS 39-49. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 75-85. LOWS 42-52.
CAZ270-278-NVZ458-101430-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
146 PM PDT WED SEP 9 2026
TONIGHT
* SKY/WEATHER........CLEAR THEN BECOMING PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........53-63.
* 24 HR TREND......6 DEGREES WARMER.
* MAX HUMIDITY.......
* VALLEYS..........31-41%.
* MID SLOPE........25-35%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* MIXING HEIGHT......3800-4800 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........82-92.
* MID SLOPE........78-88.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........14-23%.
* MID SLOPE........15-22%.
* 24 HR TREND......5% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 13 TO 20 MPH
WITH GUSTS TO 30 MPH.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 7100-8100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 15 TO 25 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..........44-54.
* MID SLOPE........50-60.
* MAX HUMIDITY.......
* VALLEYS..........49-59%.
* MID SLOPE........40-50%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 13 TO 20 MPH WITH GUSTS TO 30 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......4100-5100 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 15 TO 25 MPH DECREASING TO 10 TO 15 MPH
AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........80-90.
* MID SLOPE........74-84.
* MIN HUMIDITY.......
* VALLEYS..........10-20%.
* MID SLOPE........14-19%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 13 TO 20 MPH
WITH GUSTS TO 30 MPH.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......200-500 FT AGL THEN 6300-7300 FT AGL IN THE
AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 15 TO 25 MPH IN THE
AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 43-53. WEST WINDS 15 TO 25 MPH BECOMING
DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 70-80. LOWS 30-40. WEST WINDS 15 TO 25 MPH.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 62-72. LOWS 30-40. SLOPE
WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 67-77. LOWS 37-47.
CAZ271-101430-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
146 PM PDT WED SEP 9 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........44-54.
* MID SLOPE........52-62.
* 24 HR TREND......5 DEGREES WARMER.
* MAX HUMIDITY.......
* VALLEYS..........44-54%.
* MID SLOPE........33-43%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* MIXING HEIGHT......3700-4700 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........79-89.
* MID SLOPE........76-86.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........20-30%.
* MID SLOPE........20-30%.
* 24 HR TREND......7% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 9 TO 14 MPH
WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH LATE IN
THE AFTERNOON.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 6600-7600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 15 TO 25 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..........41-51.
* MID SLOPE........50-60.
* MAX HUMIDITY.......
* VALLEYS..........64-74%.
* MID SLOPE........49-59%.
* 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 30
MPH.
* MIXING HEIGHT......3400-4400 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 15 TO 25 MPH SHIFTING TO THE SOUTHWEST 10
TO 15 MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........75-85.
* MID SLOPE........72-82.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........15-25%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 9 TO 15 MPH
WITH GUSTS TO 25 MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......200-500 FT AGL THEN 5600-6600 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 38-48. WEST WINDS 9 TO 15 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH, THEN BECOMING SOUTH 7 TO
12 MPH AFTER MIDNIGHT.
SATURDAY
CLEAR. HIGHS 63-73. LOWS 27-37. SOUTHWEST WINDS 10 TO
20 MPH.
SUNDAY
CLEAR. HIGHS 60-70. LOWS 27-37. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 65-75. LOWS 32-42. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 64-74. LOWS 34-44.
CAZ274-101430-
SOUTHERN MONO COUNTY-
146 PM PDT WED SEP 9 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........50-60.
* MID SLOPE........49-59.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........42-52%.
* MID SLOPE........26-36%.
* 24 HR TREND......7% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* MIXING HEIGHT......4400-5400 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........77-87.
* MID SLOPE........74-84.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........17-27%.
* MID SLOPE........20-30%.
* 24 HR TREND......9% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 8 TO 13 MPH
WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH LATE IN
THE AFTERNOON.
* MIXING HEIGHT......1900-2900 FT AGL INCREASING TO 7700-8700 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING CLEAR. SLIGHT
CHANCE OF SHOWERS IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........47-57.
* MAX HUMIDITY.......
* VALLEYS..........63-73%.
* MID SLOPE........49-59%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 5 TO 10 MPH WITH GUSTS TO 25 MPH IN
THE EVENING BECOMING WEST 7 TO 12 MPH WITH GUSTS TO
20 MPH AFTER MIDNIGHT.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......3200-4200 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........74-84.
* MID SLOPE........71-81.
* MIN HUMIDITY.......
* VALLEYS..........13-23%.
* MID SLOPE........17-27%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 15 MPH. GUSTS TO 30 MPH IN
THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......600-1100 FT AGL INCREASING TO 6500-7500 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 10 TO 15 MPH SHIFTING TO THE SOUTHWEST 15
TO 25 MPH IN THE AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 45-55. SOUTHWEST WINDS 9 TO 16 MPH
DECREASING TO 8 TO 13 MPH IN THE LATE EVENING AND OVERNIGHT.
SATURDAY
CLEAR. HIGHS 70-80. LOWS 41-51. SOUTHWEST WINDS 10 TO
20 MPH.
SUNDAY
CLEAR. HIGHS 67-77. LOWS 39-49. NORTHWEST WINDS 10 TO
15 MPH.
MONDAY
CLEAR. HIGHS 68-78. LOWS 39-49. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 68-78. LOWS 38-48.
.8 TO 14 DAY OUTLOOK FOR (THU SEP 17 THROUGH WED SEP 23)
ABOVE NORMAL TEMPERATURES AND PRECIPITATION.
=
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