321
FNUS55 KREV 262202
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
302 PM PDT WED AUG 26 2026
DISCUSSION
INCREASING AFTERNOON WINDS AND DRY CONDITIONS WILL RESULT IN AREAS
OF ELEVATED TO CRITICAL FIRE WEATHER CONCERNS TODAY AND THURSDAY
AFTERNOON. DRY CONDITIONS WITH POOR OVERNIGHT RECOVERY EXPECTED
ALONG MID- SLOPE AND RIDGETOP AREAS. INCREASING HUMIDITY IS EXPECTED
ON FRIDAY WITH A 20-60% CHANCE OF SHOWERS AND A 5-15% CHANCE OF
ISOLATED THUNDERSTORMS.
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
NVZ420-271430-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
302 PM PDT WED AUG 26 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........52-62.
* MID SLOPE........57-67.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........41-51%.
* MID SLOPE........28-38%.
* 24 HR TREND......6% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 12 TO 18 MPH WITH GUSTS TO 30
MPH BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......4900-5900 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........84-94.
* MID SLOPE........81-91.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........7-17%.
* MID SLOPE........15-25%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 13 TO 20
MPH WITH GUSTS TO 30 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......2300-3300 FT AGL INCREASING TO 8300-9300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 25 MPH IN
THE AFTERNOON.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........55-65.
* MID SLOPE........57-67.
* MAX HUMIDITY.......
* VALLEYS..........57-67%.
* MID SLOPE........40-50%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 13 TO 20 MPH WITH GUSTS TO 30
MPH BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......4700-5700 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 15 TO 20 MPH IN THE EVENING BECOMING
LIGHT.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........SHOWERS LIKELY. SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...40%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........69-79.
* MIN HUMIDITY.......
* VALLEYS..........22-32%.
* MID SLOPE........40-50%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH IN THE LATE MORNING AND AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 2900-3900 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. CHANCE
OF SHOWERS IN THE EVENING. LOWS 46-56. SOUTHWEST WINDS 7 TO 12 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 78-88. LOWS 44-54. SOUTHWEST WINDS 10 TO
15 MPH.
SUNDAY
CLEAR. HIGHS 76-86. LOWS 44-54. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 78-88. LOWS 42-52. WEST WINDS 10 TO 15 MPH.
TUESDAY
CLEAR. HIGHS 74-84. LOWS 41-51.
WEDNESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS. HIGHS 74-84.
NVZ421-271430-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
302 PM PDT WED AUG 26 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS IN THE
EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........46-56.
* MID SLOPE........59-69.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........50-60%.
* MID SLOPE........35-45%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH. GUSTS TO 25 MPH IN
THE EVENING.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......5200-6200 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........81-91.
* MID SLOPE........75-85.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........17-27%.
* MID SLOPE........17-27%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 25 MPH IN THE LATE MORNING
AND AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......2800-3800 FT AGL INCREASING TO 8900-9900 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 20 MPH IN
THE AFTERNOON.
* VENTILATION........EXCELLENT.
THURSDAY NIGHT
* SKY/WEATHER........CLOUDY. CHANCE OF SHOWERS AFTER MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........59-69.
* MAX HUMIDITY.......
* VALLEYS..........66-76%.
* MID SLOPE........43-53%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST 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......3700-4700 FT AGL DECREASING TO 700 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MAX TEMPERATURE....
* VALLEYS..........71-81.
* MID SLOPE........64-74.
* MIN HUMIDITY.......
* VALLEYS..........36-46%.
* MID SLOPE........37-47%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH INCREASING TO 20 TO
30 MPH IN THE AFTERNOON. GUSTS TO 40 MPH
INCREASING TO 45 MPH LATE IN THE AFTERNOON.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 4100-5100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 20 MPH IN
THE AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. CHANCE OF SHOWERS IN THE EVENING. LOWS 42-52. WEST WINDS
7 TO 12 MPH IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 76-86. LOWS
38-48. SOUTHWEST WINDS 10 TO 15 MPH.
SUNDAY
CLEAR. HIGHS 76-86. LOWS 38-48. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 76-86. LOWS 36-46. SOUTHWEST WINDS 10 TO
15 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. HIGHS
74-84. LOWS 36-46.
CAZ272-271430-
GREATER LAKE TAHOE AND TRUCKEE AREA-
302 PM PDT WED AUG 26 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........51-61.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........57-67%.
* MID SLOPE........35-45%.
* 24 HR TREND......7% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO 25 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......3400-4400 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........72-82.
* MID SLOPE........70-80.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........21-31%.
* MID SLOPE........22-32%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......2500-3500 FT AGL INCREASING TO 6400-7400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO 15 TO 25
MPH IN THE AFTERNOON.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........49-59.
* MAX HUMIDITY.......
* VALLEYS..........83-93%.
* MID SLOPE........62-72%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO 20 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......3400-4400 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........SHOWERS LIKELY IN THE MORNING, THEN SHOWERS
AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MAX TEMPERATURE....
* VALLEYS..........61-71.
* MID SLOPE........59-69.
* MIN HUMIDITY.......
* VALLEYS..........57-67%.
* MID SLOPE........56-66%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH. GUSTS TO 20 MPH LATE IN THE
AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 40
MPH INCREASING TO 20 TO 30 MPH WITH GUSTS TO
45 MPH IN THE AFTERNOON.
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 2200-3200 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. CHANCE
OF SHOWERS IN THE EVENING. LOWS 40-50. DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 66-76. LOWS 39-49. SOUTHWEST WINDS 10 TO
15 MPH.
SUNDAY
CLEAR. HIGHS 68-78. LOWS 39-49. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 66-76. LOWS 37-47. SLOPE WINDS.
TUESDAY
CLEAR. HIGHS 63-73. LOWS 37-47.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. HIGHS 65-75.
NVZ423-271430-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
302 PM PDT WED AUG 26 2026
TONIGHT
* SKY/WEATHER........CLEAR THEN BECOMING PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........59-69.
* MID SLOPE........62-71.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........29-39%.
* MID SLOPE........23-33%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 15 MPH BECOMING DOWNSLOPE 2
TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......5800-6800 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........91-97.
* MID SLOPE........85-95.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........13-18%.
* MID SLOPE........14-19%.
* 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 LATE MORNING
AND AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH.
* MIXING HEIGHT......2000-3000 FT AGL INCREASING TO 10100-11100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 15 TO 25 MPH IN
THE AFTERNOON.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........59-69.
* MID SLOPE........61-70.
* MAX HUMIDITY.......
* VALLEYS..........38-48%.
* MID SLOPE........34-44%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 16 MPH WITH GUSTS TO 25 MPH
BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
* MIXING HEIGHT......5800-6800 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 20 MPH.
* VENTILATION........EXCELLENT DECREASING TO FAIR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY IN THE AFTERNOON.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...30%.
* MAX TEMPERATURE....
* VALLEYS..........78-84.
* MID SLOPE........72-82.
* MIN HUMIDITY.......
* VALLEYS..........33-43%.
* MID SLOPE........35-45%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 9 TO 14 MPH IN
THE LATE MORNING AND AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH. GUSTS TO 30 MPH
INCREASING TO 45 MPH LATE IN THE AFTERNOON.
* MIXING HEIGHT......1500-2500 FT AGL INCREASING TO 3100-4100 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. CHANCE OF
SHOWERS. LOWS 49-59. SOUTHWEST WINDS 8 TO 13 MPH IN THE EVENING
BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 83-89. LOWS 47-57. SOUTHWEST WINDS 10 TO
15 MPH.
SUNDAY
CLEAR. HIGHS 81-87. LOWS 47-57. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 84-90. LOWS 48-58. SLOPE WINDS.
TUESDAY
CLEAR. HIGHS 80-86. LOWS 47-57.
WEDNESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS. HIGHS 80-86.
NVZ429-271430-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
302 PM PDT WED AUG 26 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........57-67.
* MID SLOPE........62-72.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........39-49%.
* MID SLOPE........26-36%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 8 TO 13 MPH WITH GUSTS TO 20 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......6000-7000 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY THEN BECOMING PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........87-97.
* MID SLOPE........83-93.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........13-23%.
* MID SLOPE........15-21%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH LATE IN
THE AFTERNOON.
* MIXING HEIGHT......1800-2800 FT AGL INCREASING TO 9700-10700 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........57-67.
* MID SLOPE........62-72.
* MAX HUMIDITY.......
* VALLEYS..........45-55%.
* MID SLOPE........36-46%.
* 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........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH.
* MIXING HEIGHT......5000-6000 FT AGL DECREASING TO 900-1400 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO FAIR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY IN THE AFTERNOON.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...25%.
* MAX TEMPERATURE....
* VALLEYS..........76-86.
* MID SLOPE........73-83.
* MIN HUMIDITY.......
* VALLEYS..........30-40%.
* MID SLOPE........31-41%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 8 TO 13 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH. GUSTS TO 30 MPH
INCREASING TO 35 MPH IN THE AFTERNOON.
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 3500-4500 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
CLOUDY IN THE EVENING THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. CHANCE OF SHOWERS.
LOWS 49-59. WEST WINDS 7 TO 12 MPH IN THE EVENING BECOMING DOWNSLOPE
2 TO 5 MPH.
SATURDAY
MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 80-90. LOWS
47-57. WEST WINDS 10 TO 15 MPH.
SUNDAY
CLEAR. HIGHS 79-89. LOWS 47-57. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 81-91. LOWS 46-56. SLOPE WINDS.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 77-87. LOWS 46-56.
CAZ270-278-NVZ458-271430-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
302 PM PDT WED AUG 26 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........54-64.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........26-36%.
* MID SLOPE........22-32%.
* 24 HR TREND......15% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 12 TO 20 MPH WITH GUSTS TO 30
MPH BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......5000-6000 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........85-95.
* MID SLOPE........81-89.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........8-18%.
* MID SLOPE........9-15%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 12 TO 20
MPH WITH GUSTS TO 35 MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH.
* MIXING HEIGHT......1900-2900 FT AGL INCREASING TO 9500-10500 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO 20 TO 30
MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
THURSDAY NIGHT
* SKY/WEATHER........MOSTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........48-58.
* MID SLOPE........54-64.
* MAX HUMIDITY.......
* VALLEYS..........40-50%.
* MID SLOPE........34-44%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 12 TO 20 MPH WITH GUSTS TO 30
MPH BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 20 TO 30 MPH DECREASING TO 10 TO
15 MPH IN THE MORNING.
* MIXING HEIGHT......5300-6300 FT AGL DECREASING TO 700 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO FAIR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...20%.
* MAX TEMPERATURE....
* VALLEYS..........74-84.
* MID SLOPE........71-79.
* MIN HUMIDITY.......
* VALLEYS..........22-32%.
* MID SLOPE........24-34%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTH 9 TO 16 MPH
WITH GUSTS TO 30 MPH IN THE LATE MORNING AND
AFTERNOON.
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 35 MPH.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 4400-5400 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 20 MPH.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
EXTENDED
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. CHANCE
OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS
41-51. SOUTHWEST WINDS 9 TO 16 MPH IN THE EVENING BECOMING DOWNSLOPE
2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 79-89. LOWS 37-47. WEST WINDS 10 TO 15 MPH.
SUNDAY
CLEAR. HIGHS 77-87. LOWS 37-47. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 78-88. LOWS 37-47. SOUTHWEST WINDS 10 TO
15 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 75-85. LOWS 36-46.
CAZ271-271430-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
302 PM PDT WED AUG 26 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........42-52.
* MID SLOPE........53-63.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........35-45%.
* MID SLOPE........23-33%.
* 24 HR TREND......23% DRIER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO 35 MPH.
* MIXING HEIGHT......3700-4700 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........80-90.
* MID SLOPE........77-87.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........12-22%.
* MID SLOPE........11-21%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 16
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......2400-3400 FT AGL INCREASING TO 8700-9700 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH INCREASING TO 20 TO 30
MPH IN THE AFTERNOON.
* VENTILATION........EXCELLENT.
THURSDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........43-53.
* MID SLOPE........54-64.
* MAX HUMIDITY.......
* VALLEYS..........57-67%.
* MID SLOPE........40-50%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 15 MPH WITH GUSTS TO 30 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......4200-5200 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHWEST 15 TO 25 MPH DECREASING TO 10 TO 15
MPH AFTER MIDNIGHT.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...30%.
* MAX TEMPERATURE....
* VALLEYS..........71-81.
* MID SLOPE........68-78.
* MIN HUMIDITY.......
* VALLEYS..........24-34%.
* MID SLOPE........25-35%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 4100-5100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* 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 35-45. SOUTHWEST WINDS 8 TO
13 MPH IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
SATURDAY
CLEAR. HIGHS 74-84. LOWS 33-43. SOUTHWEST WINDS 10 TO
15 MPH.
SUNDAY
CLEAR. HIGHS 75-85. LOWS 33-43. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 72-82. LOWS 30-40. SOUTHWEST WINDS 10 TO
15 MPH.
TUESDAY THROUGH WEDNESDAY
CLEAR. HIGHS 70-80. LOWS 29-39.
CAZ274-271430-
SOUTHERN MONO COUNTY-
302 PM PDT WED AUG 26 2026
TONIGHT
* SKY/WEATHER........CLEAR.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MIN TEMPERATURE....
* VALLEYS..........47-57.
* MID SLOPE........49-59.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........54-64%.
* MID SLOPE........38-48%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....WEST WINDS 8 TO 13 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 25
MPH.
* MIXING HEIGHT......5400-6400 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SUNNY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...0%.
* MAX TEMPERATURE....
* VALLEYS..........76-86.
* MID SLOPE........73-83.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........16-26%.
* MID SLOPE........20-30%.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 14
MPH WITH GUSTS TO 30 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......2500-3500 FT AGL INCREASING TO 8500-9500 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 20 MPH.
* VENTILATION........VERY GOOD INCREASING TO EXCELLENT IN THE
AFTERNOON.
THURSDAY NIGHT
* SKY/WEATHER........CLOUDY. CHANCE OF SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...10%.
* MIN TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........51-61.
* MAX HUMIDITY.......
* VALLEYS..........70-80%.
* MID SLOPE........48-58%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHWEST WINDS 9 TO 14 MPH WITH GUSTS TO 30 MPH
UNTIL EARLY MORNING BECOMING DOWNSLOPE 2 TO 5
MPH.
* RIDGE TOP........SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......3300-4300 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO MARGINAL AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...45%.
* MAX TEMPERATURE....
* VALLEYS..........68-78.
* MID SLOPE........65-75.
* MIN HUMIDITY.......
* VALLEYS..........31-41%.
* MID SLOPE........40-50%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHWEST 9 TO 17
MPH WITH GUSTS TO 30 MPH IN THE LATE MORNING
AND AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 40
MPH INCREASING TO 20 TO 30 MPH WITH GUSTS TO
45 MPH LATE IN THE AFTERNOON.
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 5700-6700 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 20 TO 30 MPH IN
THE AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO EXCELLENT IN THE
AFTERNOON.
EXTENDED
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. CHANCE OF SHOWERS IN THE EVENING. LOWS 41-51. SOUTHWEST
WINDS 9 TO 14 MPH.
SATURDAY
MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 70-80. LOWS
37-47. SOUTHWEST WINDS 10 TO 15 MPH.
SUNDAY
CLEAR. HIGHS 71-81. LOWS 37-47. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 71-81. LOWS 35-45. SOUTHWEST WINDS 10 TO
15 MPH.
TUESDAY
CLEAR. HIGHS 69-79. LOWS 35-45.
WEDNESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS. HIGHS 70-80.
.8 TO 14 DAY OUTLOOK FOR (THU SEP 3 THROUGH WED SEP 9)
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
=
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