272
FNUS55 KREV 312113
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
213 PM PDT FRI JUL 31 2026
..HEAT ADVISORY IN EFFECT UNTIL 8 AM PDT SUNDAY
DISCUSSION
THE REGION WILL CONTINUE TO EXPERIENCE HOT AND DRY WEATHER, WITH
TEMPERATURES PEAKING TODAY AND SATURDAY. EXPECT STANDARD AFTERNOON
BREEZES GUSTING BETWEEN 20 AND 25 MPH, WITH OCCASIONAL GUSTS REACHING
UP TO 30 MPH ON SATURDAY. BECAUSE OF THESE WINDS AND VERY LOW
AFTERNOON HUMIDITIES, THERE WILL BE BRIEF WINDOWS OF ELEVATED FIRE
DANGER EACH DAY.
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
NVZ420-011430-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
213 PM PDT FRI JUL 31 2026
..HEAT ADVISORY IN EFFECT UNTIL 8 AM PDT SUNDAY
TONIGHT
* SKY/WEATHER........CLEAR. PATCHY SMOKE IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........57-67.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........27-37%.
* MID SLOPE........16-26%.
* 24 HR TREND......4% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH UNTIL EARLY MORNING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......4400-5400 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..........91-101.
* MID SLOPE........89-99.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........3-13%.
* MID SLOPE........5-11%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 7 TO 12 MPH
WITH GUSTS TO 25 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 6300-7300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR. PATCHY SMOKE IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........52-62.
* MID SLOPE........55-65.
* MAX HUMIDITY.......
* VALLEYS..........31-41%.
* MID SLOPE........18-28%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 16 MPH. GUSTS TO 25 MPH IN THE
EVENING.
* RIDGE TOP........WEST WINDS 10 TO 16 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......4800-5800 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 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..........89-99.
* MID SLOPE........88-98.
* MIN HUMIDITY.......
* VALLEYS..........4-14%.
* MID SLOPE........6-12%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......600 FT AGL INCREASING TO 5700-6700 FT AGL IN
THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 51-61. WEST WINDS 9 TO 14 MPH.
MONDAY
CLEAR. HIGHS 87-97. LOWS 51-61. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 90-100. LOWS 53-63. WEST
WINDS 10 TO 15 MPH.
THURSDAY THROUGH FRIDAY
CLEAR. HIGHS 90-100. LOWS 54-64.
NVZ421-011430-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
213 PM PDT FRI JUL 31 2026
..HEAT ADVISORY IN EFFECT UNTIL 8 AM PDT SUNDAY
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........52-62.
* MID SLOPE........60-70.
* 24 HR TREND......4 DEGREES WARMER.
* MAX HUMIDITY.......
* VALLEYS..........23-33%.
* MID SLOPE........16-26%.
* 24 HR TREND......4% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH UNTIL EARLY MORNING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......5100-6100 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........92-102.
* MID SLOPE........85-95.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........6-11%.
* MID SLOPE........6-13%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHWEST 9 TO 15
MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH SHIFTING TO THE
SOUTHWEST IN THE LATE MORNING AND AFTERNOON.
GUSTS TO 25 MPH LATE IN THE AFTERNOON.
* MIXING HEIGHT......1800-2800 FT AGL INCREASING TO 9000-10000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........59-69.
* MAX HUMIDITY.......
* VALLEYS..........22-32%.
* MID SLOPE........17-27%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 15 MPH WITH GUSTS TO 25 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......5900-6900 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........91-101.
* MID SLOPE........84-94.
* MIN HUMIDITY.......
* VALLEYS..........6-11%.
* MID SLOPE........6-13%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHWEST 8 TO 13
MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......700 FT AGL INCREASING TO 7500-8500 FT AGL IN
THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 48-58. WEST WINDS 9 TO 15 MPH UNTIL
EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
MONDAY THROUGH WEDNESDAY
CLEAR. HIGHS 91-101. LOWS 48-58. WEST
WINDS 10 TO 15 MPH.
THURSDAY THROUGH FRIDAY
CLEAR. HIGHS 90-100. LOWS 51-61.
CAZ272-011430-
GREATER LAKE TAHOE AND TRUCKEE AREA-
213 PM PDT FRI JUL 31 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........51-61.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........38-48%.
* MID SLOPE........16-26%.
* 24 HR TREND......5% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......2200-3200 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........79-89.
* MID SLOPE........78-88.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........9-19%.
* MID SLOPE........9-19%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 7 TO 12 MPH
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......1500-2000 FT AGL INCREASING TO 4600-5600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........50-60.
* MAX HUMIDITY.......
* VALLEYS..........42-52%.
* MID SLOPE........19-29%.
* 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........WEST WINDS 10 TO 20 MPH.
* MIXING HEIGHT......2300-3300 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 20 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........78-88.
* MID SLOPE........77-87.
* MIN HUMIDITY.......
* VALLEYS..........10-20%.
* MID SLOPE........10-20%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 5 TO 10 MPH
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......200-500 FT AGL THEN 5100-6100 FT AGL IN THE
AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 46-56. WEST WINDS 5 TO 10 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
MONDAY
CLEAR. HIGHS 80-90. LOWS 46-56. SLOPE WINDS.
TUESDAY
CLEAR. HIGHS 80-90. LOWS 50-60. SLOPE WINDS.
WEDNESDAY
CLEAR. HIGHS 78-88. LOWS 50-60. SLOPE WINDS.
THURSDAY THROUGH FRIDAY
CLEAR. HIGHS 79-89. LOWS 50-60.
NVZ423-011430-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
213 PM PDT FRI JUL 31 2026
..HEAT ADVISORY IN EFFECT UNTIL 8 AM PDT SUNDAY
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........59-68.
* MID SLOPE........60-69.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........17-27%.
* MID SLOPE........12-22%.
* 24 HR TREND......4% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH IN THE EVENING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS. GUSTS TO 20 MPH LATE IN THE NIGHT.
* MIXING HEIGHT......4700-5700 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........97-105.
* MID SLOPE........93-103.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........4-9%.
* MID SLOPE........4-9%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 7100-8100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL 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..........59-68.
* MID SLOPE........59-68.
* MAX HUMIDITY.......
* VALLEYS..........24-34%.
* MID SLOPE........16-26%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH UNTIL EARLY MORNING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 20 MPH.
* MIXING HEIGHT......4700-5700 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........94-102.
* MID SLOPE........90-100.
* MIN HUMIDITY.......
* VALLEYS..........5-10%.
* MID SLOPE........6-11%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 5400-6400 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 56-66. WEST WINDS 7 TO 12 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH, THEN BECOMING NORTH 9 TO
14 MPH AFTER MIDNIGHT.
MONDAY THROUGH WEDNESDAY
CLEAR. HIGHS 93-103. LOWS 55-65. WEST
WINDS 8 TO 13 MPH.
THURSDAY THROUGH FRIDAY
CLEAR. HIGHS 96-105. LOWS 61-71.
NVZ429-011430-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
213 PM PDT FRI JUL 31 2026
..HEAT ADVISORY IN EFFECT UNTIL 8 AM PDT SUNDAY
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........57-67.
* MID SLOPE........61-71.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........20-30%.
* MID SLOPE........11-21%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....NORTHWEST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......5100-6100 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....NORTHWEST 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..........96-106.
* MID SLOPE........92-102.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........5-10%.
* MID SLOPE........4-9%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHWEST 5 TO 10
MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 7600-8600 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........57-67.
* MID SLOPE........60-70.
* MAX HUMIDITY.......
* VALLEYS..........21-31%.
* MID SLOPE........13-23%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 8 TO 13 MPH. GUSTS TO 20 MPH UNTIL
EARLY MORNING.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......5500-6500 FT AGL DECREASING TO 600-900 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........94-104.
* MID SLOPE........90-100.
* MIN HUMIDITY.......
* VALLEYS..........5-10%.
* MID SLOPE........5-10%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING NORTHWEST 7 TO 12
MPH IN THE AFTERNOON.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH
LATE IN THE AFTERNOON.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 6000-7000 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 56-66. NORTHWEST WINDS 8 TO 13 MPH.
MONDAY
CLEAR. HIGHS 92-102. LOWS 55-65. NORTH WINDS 10 TO 15 MPH.
TUESDAY
CLEAR. HIGHS 95-105. LOWS 55-65. SLOPE WINDS.
WEDNESDAY
CLEAR. HIGHS 96-106. LOWS 57-67. SLOPE WINDS.
THURSDAY THROUGH FRIDAY
CLEAR. HIGHS 95-105. LOWS 59-69.
CAZ270-278-NVZ458-011430-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
213 PM PDT FRI JUL 31 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........52-62.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........29-39%.
* MID SLOPE........21-31%.
* 24 HR TREND......6% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 16 MPH WITH GUSTS TO 25 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......4500-5500 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..........91-101.
* MID SLOPE........86-96.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........3-13%.
* MID SLOPE........6-14%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 16
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 16 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 7000-8000 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 10 TO 20 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........44-54.
* MID SLOPE........52-62.
* MAX HUMIDITY.......
* VALLEYS..........40-50%.
* MID SLOPE........29-39%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 17 MPH SHIFTING TO THE NORTHWEST
5 TO 10 MPH IN THE MORNING. GUSTS TO 25 MPH.
* RIDGE TOP........NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......4800-5800 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....NORTHWEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........89-99.
* MID SLOPE........84-94.
* MIN HUMIDITY.......
* VALLEYS..........5-15%.
* MID SLOPE........8-14%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 5 TO 10 MPH
LATE IN THE AFTERNOON.
* RIDGE TOP........NORTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......700 FT AGL INCREASING TO 5500-6500 FT AGL IN
THE AFTERNOON.
* TRANSPORT WINDS....NORTHWEST 10 TO 15 MPH.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 43-53. NORTHWEST WINDS 9 TO 15 MPH.
MONDAY THROUGH WEDNESDAY
CLEAR. HIGHS 90-100. LOWS 43-53. WEST
WINDS 8 TO 13 MPH.
THURSDAY THROUGH FRIDAY
CLEAR. HIGHS 91-101. LOWS 51-61.
CAZ271-011430-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
213 PM PDT FRI JUL 31 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........44-54.
* MID SLOPE........50-60.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........37-47%.
* MID SLOPE........25-35%.
* 24 HR TREND......8% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 8 TO 13 MPH WITH GUSTS TO 25 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN
THE EVENING.
* MIXING HEIGHT......3200-4200 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.
SATURDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........86-96.
* MID SLOPE........83-93.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........8-18%.
* MID SLOPE........8-18%.
* 24 HR TREND......LITTLE CHANGE.
* 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........SOUTHWEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......1400-1900 FT AGL INCREASING TO 6400-7400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 20 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........49-59.
* MAX HUMIDITY.......
* VALLEYS..........51-61%.
* MID SLOPE........29-39%.
* 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........WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......3500-4500 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..........85-95.
* MID SLOPE........82-92.
* MIN HUMIDITY.......
* VALLEYS..........10-20%.
* MID SLOPE........10-20%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 7 TO 12 MPH
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 20 MPH IN
THE MORNING.
* MIXING HEIGHT......600 FT AGL INCREASING TO 5900-6900 FT AGL IN
THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........POOR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
SUNDAY NIGHT
CLEAR. LOWS 43-53. WEST WINDS 9 TO 14 MPH IN THE
EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
MONDAY
CLEAR. HIGHS 86-96. LOWS 43-53. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 87-97. LOWS 46-56.
SOUTHWEST WINDS 10 TO 15 MPH.
THURSDAY THROUGH FRIDAY
CLEAR. HIGHS 86-96. LOWS 46-56.
CAZ274-011430-
SOUTHERN MONO COUNTY-
213 PM PDT FRI JUL 31 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........52-62.
* MID SLOPE........52-62.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........31-41%.
* MID SLOPE........21-31%.
* 24 HR TREND......LITTLE CHANGE.
* 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........LIGHT WINDS BECOMING EAST 10 TO 15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT......4700-5700 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........87-97.
* MID SLOPE........85-95.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........5-15%.
* MID SLOPE........6-15%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 8 TO 13
MPH WITH GUSTS TO 25 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN THE
LATE MORNING AND AFTERNOON.
* MIXING HEIGHT......1500-2500 FT AGL INCREASING TO 8200-9200 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........52-62.
* MID SLOPE........51-61.
* MAX HUMIDITY.......
* VALLEYS..........29-39%.
* MID SLOPE........21-31%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......5100-6100 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* 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..........87-97.
* MID SLOPE........84-94.
* MIN HUMIDITY.......
* VALLEYS..........6-16%.
* MID SLOPE........7-15%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 7 TO 12 MPH
WITH GUSTS TO 20 MPH LATE IN THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH LATE IN
THE AFTERNOON.
* MIXING HEIGHT......700 FT AGL INCREASING TO 7500-8500 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 50-60. WEST WINDS 9 TO 14 MPH UNTIL
EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
MONDAY THROUGH WEDNESDAY
CLEAR. HIGHS 87-97. LOWS 50-60.
SOUTHWEST WINDS 8 TO 13 MPH.
THURSDAY THROUGH FRIDAY
CLEAR. HIGHS 85-95. LOWS 52-62.
.8 TO 14 DAY OUTLOOK FOR (SAT AUG 8 THROUGH FRI AUG 14)
ABOVE NORMAL TEMPERATURES AND PRECIPITATION.
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