656
FNUS55 KREV 111848
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
1148 AM PDT THU SEP 11 2025
DISCUSSION
SHOWERS AND ISOLATED THUNDERSTORMS WILL DEVELOP THROUGH THE AFTERNOON
BEFORE WANING IN THE EVENING. OTHERWISE, COOLER THAN NORMAL TEMPERATURES
AND LIGHT BREEZES PREVAIL TODAY. ADDITIONAL SHOWERS AND STORMS ARE
POSSIBLE FRIDAY AFTERNOON IN THE SIERRA SOUTH OF US-50, THEN DRIER
AND WARMER CONDITIONS PREVAIL THIS WEEKEND. INCREASED BREEZES ARE
POSSIBLE EARLY NEXT WEEK AS LOW PRESSURE BRUSHES BY THE REGION.
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
NVZ420-121445-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
1148 AM PDT THU SEP 11 2025
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* CHANCE OF THUNDER..20%.
* MIN TEMPERATURE....
* VALLEYS..........41-51.
* MID SLOPE........43-53.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........78-88%.
* MID SLOPE........62-72%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 7 TO 12 MPH UNTIL EARLY MORNING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS. GUSTS TO 20 MPH IN THE LATE EVENING
AND EARLY MORNING.
* CHC WETTING RAIN...10%.
* MIXING HEIGHT......3100-4100 FT AGL DECREASING TO 600-1000 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY. SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..10%.
* MAX TEMPERATURE....
* VALLEYS..........67-77.
* MID SLOPE........64-74.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........21-31%.
* MID SLOPE........29-39%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 5300-6300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........42-52.
* MID SLOPE........45-55.
* MAX HUMIDITY.......
* VALLEYS..........67-77%.
* MID SLOPE........49-59%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......3300-4300 FT AGL DECREASING TO 600-900 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........70-80.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........21-31%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......600-800 FT AGL INCREASING TO 4900-5900 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
SATURDAY NIGHT
CLEAR. LOWS 43-53. DOWNSLOPE 2 TO 5 MPH.
SUNDAY
CLEAR. HIGHS 73-83. LOWS 42-52. WEST WINDS 10 TO 15 MPH.
MONDAY THROUGH TUESDAY
CLEAR. HIGHS 73-83. LOWS 42-52. SLOPE
WINDS.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 76-86. LOWS 45-55.
NVZ421-121445-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
1148 AM PDT THU SEP 11 2025
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING.
* CHANCE OF THUNDER..20%.
* MIN TEMPERATURE....
* VALLEYS..........32-42.
* MID SLOPE........43-53.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........74-84%.
* MID SLOPE........58-68%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING NORTHEAST 10 TO 15 MPH WITH
GUSTS TO 20 MPH IN THE LATE EVENING AND
OVERNIGHT.
* CHC WETTING RAIN...20%.
* MIXING HEIGHT......2300-3300 FT AGL DECREASING TO 600-900 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* MAX TEMPERATURE....
* VALLEYS..........64-74.
* MID SLOPE........57-67.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........25-35%.
* MID SLOPE........25-35%.
* 24 HR TREND......4% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTH 7 TO 12 MPH IN
THE AFTERNOON.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...15%.
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 4800-5800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR. SLIGHT
CHANCE OF SHOWERS IN THE EVENING.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........33-43.
* MID SLOPE........46-56.
* MAX HUMIDITY.......
* VALLEYS..........69-79%.
* MID SLOPE........48-58%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTH WINDS 5 TO 10 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING NORTH 10 TO 15 MPH AFTER
MIDNIGHT, THEN BECOMING LIGHT IN THE MORNING.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......2600-3600 FT AGL DECREASING TO 600-900 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........71-81.
* MID SLOPE........64-74.
* MIN HUMIDITY.......
* VALLEYS..........17-27%.
* MID SLOPE........17-27%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......600-900 FT AGL INCREASING TO 5100-6100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
SATURDAY NIGHT
CLEAR. LOWS 36-46. NORTH WINDS 5 TO 10 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 73-83. LOWS 35-45. WEST WINDS
10 TO 15 MPH.
TUESDAY
CLEAR. HIGHS 75-85. LOWS 36-46. SLOPE WINDS.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 76-86. LOWS 38-48.
CAZ272-121445-
GREATER LAKE TAHOE AND TRUCKEE AREA-
1148 AM PDT THU SEP 11 2025
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING.
* CHANCE OF THUNDER..20%.
* MIN TEMPERATURE....
* VALLEYS..........33-43.
* MID SLOPE........36-46.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........87-97%.
* MID SLOPE........76-86%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...15%.
* MIXING HEIGHT......1700-2700 FT AGL DECREASING TO 600-800 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* MAX TEMPERATURE....
* VALLEYS..........61-69.
* MID SLOPE........56-66.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........40-50%.
* MID SLOPE........39-49%.
* 24 HR TREND......9% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...10%.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 4200-5200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO FAIR IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........39-49.
* MAX HUMIDITY.......
* VALLEYS..........82-92%.
* MID SLOPE........59-69%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......2000-3000 FT AGL DECREASING TO 600-800 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........65-75.
* MID SLOPE........62-72.
* MIN HUMIDITY.......
* VALLEYS..........29-39%.
* MID SLOPE........27-37%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......600-800 FT AGL INCREASING TO 4600-5600 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
SATURDAY NIGHT
CLEAR. LOWS 36-46. DOWNSLOPE 2 TO 5 MPH.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 65-75. LOWS 35-45. SLOPE
WINDS.
TUESDAY
CLEAR. HIGHS 69-79. LOWS 37-47. SLOPE WINDS.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 70-80. LOWS 39-49.
NVZ423-121445-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
1148 AM PDT THU SEP 11 2025
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
EVENING.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........46-55.
* MID SLOPE........47-56.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........68-78%.
* MID SLOPE........50-60%.
* 24 HR TREND......5% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH BECOMING NORTHWEST 7 TO 12
MPH IN THE LATE EVENING AND EARLY MORNING,
THEN BECOMING DOWNSLOPE 2 TO 5 MPH LATE IN THE
NIGHT.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......4000-5000 FT AGL DECREASING TO 600-800 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........73-79.
* MID SLOPE........67-77.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........23-33%.
* MID SLOPE........25-35%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 6800-7800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........45-55.
* MID SLOPE........48-57.
* MAX HUMIDITY.......
* VALLEYS..........59-69%.
* MID SLOPE........43-53%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......3900-4900 FT AGL DECREASING TO 600-700 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........78-84.
* MID SLOPE........72-82.
* MIN HUMIDITY.......
* VALLEYS..........17-25%.
* MID SLOPE........19-25%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH IN
THE LATE MORNING AND AFTERNOON.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......600-700 FT AGL INCREASING TO 6100-7100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
SATURDAY NIGHT
CLEAR. LOWS 46-56. DOWNSLOPE 2 TO 5 MPH.
SUNDAY THROUGH TUESDAY
CLEAR. HIGHS 77-87. LOWS 43-53. SLOPE
WINDS.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 83-89. LOWS 46-56.
NVZ429-121445-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
1148 AM PDT THU SEP 11 2025
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
* CHANCE OF THUNDER..10%.
* MIN TEMPERATURE....
* VALLEYS..........46-56.
* MID SLOPE........46-56.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........65-75%.
* MID SLOPE........52-62%.
* 24 HR TREND......7% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 7 TO 12 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...10%.
* MIXING HEIGHT......3700-4700 FT AGL DECREASING TO 600-800 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING SUNNY. SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..10%.
* MAX TEMPERATURE....
* VALLEYS..........70-80.
* MID SLOPE........65-75.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........21-31%.
* MID SLOPE........24-34%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHWEST 7 TO 12
MPH IN THE LATE MORNING AND AFTERNOON.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 6600-7600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........46-56.
* MID SLOPE........47-57.
* MAX HUMIDITY.......
* VALLEYS..........58-68%.
* MID SLOPE........47-57%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTH WINDS 8 TO 13 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......3800-4800 FT AGL DECREASING TO 600-800 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........75-85.
* MID SLOPE........71-81.
* MIN HUMIDITY.......
* VALLEYS..........15-25%.
* MID SLOPE........18-24%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......600-800 FT AGL INCREASING TO 5900-6900 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
SATURDAY NIGHT
CLEAR. LOWS 47-57. DOWNSLOPE 2 TO 5 MPH.
SUNDAY THROUGH TUESDAY
CLEAR. HIGHS 78-88. LOWS 45-55. SLOPE
WINDS.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 81-91. LOWS 47-57.
CAZ270-278-NVZ458-121445-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
1148 AM PDT THU SEP 11 2025
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING.
* CHANCE OF THUNDER..20%.
* MIN TEMPERATURE....
* VALLEYS..........39-49.
* MID SLOPE........40-50.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........80-90%.
* MID SLOPE........73-83%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 7 TO 12 MPH IN THE EVENING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...10%.
* MIXING HEIGHT......3300-4300 FT AGL DECREASING TO 600-900 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........68-78.
* MID SLOPE........64-72.
* 24 HR TREND......4 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........24-34%.
* MID SLOPE........29-39%.
* 24 HR TREND......8% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........NORTHEAST WINDS 10 TO 15 MPH UNTIL LATE
AFTERNOON BECOMING LIGHT.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 6100-7100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........39-49.
* MID SLOPE........44-54.
* MAX HUMIDITY.......
* VALLEYS..........71-81%.
* MID SLOPE........53-63%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......3400-4400 FT AGL DECREASING TO 600-700 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........74-84.
* MID SLOPE........71-79.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........21-29%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......600-700 FT AGL INCREASING TO 5400-6400 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
SATURDAY NIGHT
CLEAR IN THE EVENING THEN BECOMING PARTLY CLOUDY.
LOWS 41-51. SOUTHWEST WINDS 5 TO 10 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
SUNDAY
CLEAR. HIGHS 72-82. LOWS 35-45. WEST WINDS 10 TO 15 MPH.
MONDAY THROUGH TUESDAY
CLEAR. HIGHS 74-84. LOWS 35-45. SLOPE
WINDS.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 79-89. LOWS 41-51.
CAZ271-121445-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
1148 AM PDT THU SEP 11 2025
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING.
* CHANCE OF THUNDER..20%.
* MIN TEMPERATURE....
* VALLEYS..........33-43.
* MID SLOPE........39-49.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........87-97%.
* MID SLOPE........81-91%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH BECOMING LIGHT.
* CHC WETTING RAIN...20%.
* MIXING HEIGHT......2600-3600 FT AGL DECREASING TO 600-900 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........66-76.
* MID SLOPE........64-72.
* 24 HR TREND......5 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........30-40%.
* MID SLOPE........33-43%.
* 24 HR TREND......9% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 5600-6600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........42-52.
* MAX HUMIDITY.......
* VALLEYS..........77-87%.
* MID SLOPE........62-72%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
LATE EVENING AND OVERNIGHT.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......3000-4000 FT AGL DECREASING TO 600-700 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........70-78.
* MIN HUMIDITY.......
* VALLEYS..........23-33%.
* MID SLOPE........23-33%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......600-700 FT AGL INCREASING TO 5700-6700 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
SATURDAY NIGHT
CLEAR. LOWS 33-43. WEST WINDS 7 TO 12 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SUNDAY
CLEAR. HIGHS 68-78. LOWS 31-41. SOUTHWEST WINDS 10 TO
15 MPH.
MONDAY
CLEAR. HIGHS 72-82. LOWS 31-41. SLOPE WINDS.
TUESDAY
CLEAR. HIGHS 76-86. LOWS 34-44. SLOPE WINDS.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 76-86. LOWS 37-47.
CAZ274-121445-
SOUTHERN MONO COUNTY-
1148 AM PDT THU SEP 11 2025
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING.
* CHANCE OF THUNDER..20%.
* MIN TEMPERATURE....
* VALLEYS..........31-41.
* MID SLOPE........33-43.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........82-92%.
* MID SLOPE........66-76%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...20%.
* MIXING HEIGHT......3000-4000 FT AGL DECREASING TO 600-1000 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* MAX TEMPERATURE....
* VALLEYS..........60-70.
* MID SLOPE........56-66.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........23-33%.
* MID SLOPE........28-38%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...20%.
* MIXING HEIGHT......1600-2600 FT AGL INCREASING TO 4400-5400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........32-42.
* MID SLOPE........34-44.
* MAX HUMIDITY.......
* VALLEYS..........77-87%.
* MID SLOPE........55-65%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH
AFTER MIDNIGHT.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1900-2900 FT AGL DECREASING TO 600-1000 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........67-77.
* MID SLOPE........63-73.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........19-29%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...0%.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 4400-5400 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
SATURDAY NIGHT
CLEAR. LOWS 35-45. DOWNSLOPE 2 TO 5 MPH.
SUNDAY
CLEAR. HIGHS 69-79. LOWS 35-45. SLOPE WINDS.
MONDAY THROUGH TUESDAY
CLEAR. HIGHS 71-81. LOWS 36-46. SLOPE
WINDS.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 72-82. LOWS 38-48.
.8 TO 14 DAY OUTLOOK FOR (FRI SEP 19 THROUGH THU SEP 25)
ABOVE NORMAL TEMPERATURES AND PRECIPITATION.
=
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