355
FNUS55 KREV 040944
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
244 AM PDT THU SEP 4 2025
DISCUSSION
SHOWER AND THUNDERSTORM CHANCES CONTINUE TO DECREASE ACROSS THE
AREA INTO FRIDAY. STORMS MAY PRODUCE LOCALLY HEAVY RAIN, GUSTY
WINDS, AND LIGHTNING. DIURNAL, TERRAIN DRIVEN WINDS FORECASTED
WITH BREEZY AFTERNOON WINDS OUTSIDE OF ANY THUNDERSTORMS. DRIER,
COOLER, AND BREEZIER SOUTHWEST FLOW DEVELOPS OVER THE WEEKEND,
WITH SOME FIRE CONCERNS OVER ELEVATED TERRAIN DUE TO WINDS. SHOWERS
AND STORMS MAY RETURN MID NEXT WEEK BUT EXPECTED TO BE WET AT
THIS STAGE.
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
NVZ420-050015-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
244 AM PDT THU SEP 4 2025
TODAY
* SKY/WEATHER........SUNNY. PATCHY SMOKE IN THE AFTERNOON.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........79-89.
* MID SLOPE........77-87.
* 24 HR TREND......5 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........20-30%.
* 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......1600-2100 FT AGL INCREASING TO 7100-8100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE
AFTERNOON.
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR. PATCHY
SMOKE.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........51-61.
* MID SLOPE........54-64.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........54-64%.
* MID SLOPE........43-53%.
* 24 HR TREND......7% DRIER.
* 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.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......4200-5200 FT AGL DECREASING TO 600-900 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY. PATCHY SMOKE. SLIGHT CHANCE OF SHOWERS
IN THE AFTERNOON.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........80-90.
* MID SLOPE........78-88.
* MIN HUMIDITY.......
* VALLEYS..........11-21%.
* MID SLOPE........15-25%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 5800-6800 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN CLEARING. SLIGHT
CHANCE OF SHOWERS IN THE EVENING. LOWS 46-56. WEST WINDS 8 TO 13 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 76-86. LOWS 44-54. WEST WINDS 10 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. HIGHS 73-83. LOWS 42-52. SOUTHWEST WINDS
10 TO 15 MPH.
MONDAY
PARTLY CLOUDY. HIGHS 68-78. LOWS 39-49. WEST WINDS 10 TO
15 MPH.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 64-74.
LOWS 39-49.
WEDNESDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. HIGHS 61-71.
NVZ421-050015-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
244 AM PDT THU SEP 4 2025
TODAY
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY. PATCHY
SMOKE.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........77-87.
* MID SLOPE........70-80.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........20-30%.
* MID SLOPE........20-30%.
* 24 HR TREND......5% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH IN THE MORNING
BECOMING LIGHT.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 7400-8400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR. CHANCE OF
SHOWERS IN THE EVENING. PATCHY SMOKE.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........41-51.
* MID SLOPE........55-65.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........63-73%.
* MID SLOPE........43-53%.
* 24 HR TREND......8% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 5 TO 10 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......3300-4300 FT AGL DECREASING TO 600-900 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY THEN BECOMING MOSTLY CLOUDY. PATCHY
SMOKE. CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* MAX TEMPERATURE....
* VALLEYS..........77-87.
* MID SLOPE........70-80.
* MIN HUMIDITY.......
* VALLEYS..........18-28%.
* MID SLOPE........19-29%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1100-1600 FT AGL INCREASING TO 6800-7800 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN CLEARING. PATCHY
SMOKE IN THE EVENING. SLIGHT CHANCE OF SHOWERS IN THE EVENING. LOWS
39-49. SOUTHWEST WINDS 7 TO 12 MPH.
SATURDAY
CLEAR. HIGHS 75-85. LOWS 36-46. SOUTHWEST WINDS 10 TO
15 MPH.
SUNDAY
CLEAR. HIGHS 72-82. LOWS 35-45. SOUTHWEST WINDS 10 TO
15 MPH.
MONDAY
PARTLY CLOUDY. HIGHS 68-78. LOWS 32-42. SOUTHWEST WINDS
10 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS
64-74. LOWS 30-40.
WEDNESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS. HIGHS 61-71.
CAZ272-050015-
GREATER LAKE TAHOE AND TRUCKEE AREA-
244 AM PDT THU SEP 4 2025
TODAY
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY. PATCHY
SMOKE.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........71-81.
* MID SLOPE........68-78.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........29-39%.
* 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......1500-2000 FT AGL INCREASING TO 6200-7200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER........CLEAR. PATCHY SMOKE AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........43-53.
* MID SLOPE........47-57.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........75-85%.
* MID SLOPE........48-58%.
* 24 HR TREND......10% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......2800-3800 FT AGL DECREASING TO 600-800 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY. PATCHY SMOKE.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........70-80.
* MID SLOPE........67-77.
* MIN HUMIDITY.......
* VALLEYS..........22-32%.
* MID SLOPE........21-31%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 4600-5600 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 40-50. DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 65-75. LOWS 37-47. SLOPE WINDS.
SUNDAY
PARTLY CLOUDY. HIGHS 63-73. LOWS 36-46. SLOPE WINDS.
MONDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 58-68. LOWS
32-42. SLOPE WINDS.
TUESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS
55-65. LOWS 31-41.
WEDNESDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. HIGHS 51-61.
NVZ423-050015-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
244 AM PDT THU SEP 4 2025
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........86-92.
* MID SLOPE........80-90.
* 24 HR TREND......6 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........18-24%.
* MID SLOPE........19-25%.
* 24 HR TREND......6% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1500-2000 FT AGL INCREASING TO 7900-8900 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR. PATCHY
SMOKE.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........56-65.
* MID SLOPE........59-66.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........47-57%.
* MID SLOPE........36-46%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......4500-5500 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........SUNNY. PATCHY SMOKE.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........86-94.
* MID SLOPE........82-92.
* MIN HUMIDITY.......
* VALLEYS..........15-21%.
* MID SLOPE........16-22%.
* 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...5%.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 6200-7200 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. CHANCE OF SHOWERS. LOWS 54-63. DOWNSLOPE 2 TO 5 MPH.
SATURDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 85-91.
LOWS 51-61. SLOPE WINDS.
SUNDAY
PARTLY CLOUDY. HIGHS 81-87. LOWS 48-58. SLOPE WINDS.
MONDAY
PARTLY CLOUDY. HIGHS 74-82. LOWS 46-56. WEST WINDS 10 TO
15 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS. HIGHS 69-77. LOWS 45-55.
NVZ429-050015-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
244 AM PDT THU SEP 4 2025
TODAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........83-93.
* MID SLOPE........78-88.
* 24 HR TREND......6 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........17-26%.
* MID SLOPE........18-28%.
* 24 HR TREND......6% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1600-2100 FT AGL INCREASING TO 7900-8900 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE
AFTERNOON.
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR. PATCHY
SMOKE.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........56-66.
* MID SLOPE........57-67.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........49-59%.
* MID SLOPE........38-48%.
* 24 HR TREND......7% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......4200-5200 FT AGL DECREASING TO 600-800 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY. PATCHY
SMOKE. SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF THUNDER..20%.
* MAX TEMPERATURE....
* VALLEYS..........84-94.
* MID SLOPE........79-89.
* MIN HUMIDITY.......
* VALLEYS..........14-24%.
* MID SLOPE........16-26%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 6200-7200 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. PATCHY
SMOKE IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
CHANCE OF SHOWERS. LOWS 52-62. SOUTHWEST WINDS 7 TO 12 MPH.
SATURDAY
CLEAR. HIGHS 81-91. LOWS 49-59. SLOPE WINDS.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 77-87. LOWS 45-55. WEST WINDS
8 TO 13 MPH.
TUESDAY THROUGH WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS. HIGHS 68-78. LOWS 44-54.
CAZ270-278-NVZ458-050015-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
244 AM PDT THU SEP 4 2025
TODAY
* SKY/WEATHER........SUNNY. CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..10%.
* MAX TEMPERATURE....
* VALLEYS..........82-92.
* MID SLOPE........78-86.
* 24 HR TREND......7 DEGREES WARMER.
* MIN HUMIDITY.......
* VALLEYS..........17-27%.
* MID SLOPE........20-28%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 8100-9100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY. PATCHY SMOKE IN THE EVENING.
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
* CHANCE OF THUNDER..10%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........52-62.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........59-69%.
* MID SLOPE........47-57%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 7 TO 12 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......4300-5300 FT AGL DECREASING TO 600-700 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY. PATCHY
SMOKE IN THE AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..10%.
* MAX TEMPERATURE....
* VALLEYS..........82-92.
* MID SLOPE........79-87.
* MIN HUMIDITY.......
* VALLEYS..........12-22%.
* MID SLOPE........14-24%.
* 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........NORTHWEST WINDS 10 TO 15 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 6000-7000 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS 45-55. WEST
WINDS 9 TO 14 MPH UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 78-88. LOWS 41-51. SOUTHWEST WINDS 10 TO
15 MPH.
SUNDAY
PARTLY CLOUDY. HIGHS 74-84. LOWS 40-50. SOUTHWEST WINDS
10 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 68-78. LOWS
38-48. WEST WINDS 10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 63-73. LOWS 37-47.
CAZ271-050015-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
244 AM PDT THU SEP 4 2025
TODAY
* SKY/WEATHER........SUNNY. PATCHY SMOKE IN THE AFTERNOON.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........79-89.
* MID SLOPE........77-85.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........24-34%.
* MID SLOPE........24-34%.
* 24 HR TREND......LITTLE CHANGE.
* 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........SOUTHEAST WINDS 10 TO 15 MPH IN THE MORNING
BECOMING LIGHT.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......1700-2200 FT AGL INCREASING TO 8100-9100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR. PATCHY
SMOKE IN THE EVENING.
* CHANCE OF THUNDER..0%.
* MIN TEMPERATURE....
* VALLEYS..........41-51.
* MID SLOPE........50-60.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........67-77%.
* MID SLOPE........48-58%.
* 24 HR TREND......8% DRIER.
* 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........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......3500-4500 FT AGL DECREASING TO 600-700 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY. PATCHY SMOKE.
* CHANCE OF THUNDER..0%.
* MAX TEMPERATURE....
* VALLEYS..........78-88.
* MID SLOPE........74-84.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........17-27%.
* 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.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 6200-7200 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLEAR. LOWS 36-46. WEST WINDS 8 TO 13 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 72-82. LOWS 33-43. SOUTHWEST WINDS 10 TO
15 MPH.
SUNDAY
PARTLY CLOUDY. HIGHS 68-78. LOWS 32-42. SOUTHWEST WINDS
10 TO 15 MPH.
MONDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 63-73. LOWS
30-40. SOUTHWEST WINDS 10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 58-68. LOWS 29-39.
CAZ274-050015-
SOUTHERN MONO COUNTY-
244 AM PDT THU SEP 4 2025
TODAY
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY. PATCHY
SMOKE. SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF THUNDER..20%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........68-78.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........20-30%.
* MID SLOPE........23-33%.
* 24 HR TREND......4% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...10%.
* MIXING HEIGHT......1700-2700 FT AGL INCREASING TO 6300-7300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING CLEAR. CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING. PATCHY SMOKE.
* CHANCE OF THUNDER..20%.
* MIN TEMPERATURE....
* VALLEYS..........41-51.
* MID SLOPE........44-54.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........70-80%.
* MID SLOPE........51-61%.
* 24 HR TREND......8% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH. GUSTS TO 20 MPH IN THE
EVENING.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...5%.
* MIXING HEIGHT......3100-4100 FT AGL DECREASING TO 600-1000 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........SUNNY THEN BECOMING MOSTLY CLOUDY. AREAS OF
SMOKE IN THE MORNING, THEN PATCHY SMOKE IN THE
AFTERNOON. CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........69-79.
* MIN HUMIDITY.......
* VALLEYS..........19-29%.
* MID SLOPE........22-32%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS.
* CHC WETTING RAIN...10%.
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 5900-6900 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN CLEARING. PATCHY
SMOKE IN THE EVENING. SLIGHT CHANCE OF SHOWERS IN THE EVENING. LOWS
37-47. SOUTHWEST WINDS 5 TO 10 MPH IN THE EVENING BECOMING DOWNSLOPE
2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 71-81. LOWS 35-45. SOUTHWEST WINDS 10 TO
15 MPH.
SUNDAY THROUGH MONDAY
CLEAR. HIGHS 67-77. LOWS 31-41. SOUTHWEST
WINDS 10 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. HIGHS 62-72. LOWS 29-39.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 58-68.
.8 TO 14 DAY OUTLOOK FOR (THU SEP 11 THROUGH WED SEP 17)
NEAR NORMAL TEMPERATURES AND PRECIPITATION.
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