613
FNUS55 KREV 202255
FWFREV
FIRE WEATHER PLANNING FORECAST
NATIONAL WEATHER SERVICE RENO NV
355 PM PDT TUE OCT 20 2026
DISCUSSION
GUSTY SOUTH-SOUTHEAST WINDS MAY SUPPORT ELEVATED FIRE WEATHER
CONDITIONS THROUGH THIS AFTERNOON FROM S MONO TO MINERAL CO. SHOWER
CHANCES INCREASE THIS AFTERNOON, WITH ISOLATED THUNDERSTORMS POSSIBLE
IN WEST-CENTRAL NV. A PACIFIC STORM WILL BRING WIDESPREAD WETTING
RAINS, HIGH ELEVATION SNOW, AND THUNDERSTORMS WEDNESDAY AND THURSDAY.
DRIER AND MUCH COOLER WEATHER ARRIVES LATE THIS WEEK, WITH INCREASED
N/NE BREEZES ALONG THE SIERRA CREST FRIDAY INTO SATURDAY.
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
NVZ420-211415-
NORTHERN SIERRA FRONT INCLUDING CARSON CITY, DOUGLAS, STOREY,
SOUTHERN WASHOE, WESTERN LYON, AND FAR SOUTHERN LASSEN COUNTIES-
355 PM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...10%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........39-49.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........73-83%.
* MID SLOPE........59-69%.
* 24 HR TREND......23% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....EAST WINDS 5 TO 10 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........EAST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE
LATE EVENING AND OVERNIGHT.
* MIXING HEIGHT......3300-4300 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....EAST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF THUNDER..30%.
* CHC WETTING RAIN...40%.
* MAX TEMPERATURE....
* VALLEYS..........61-71.
* MID SLOPE........55-65.
* 24 HR TREND......5 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........31-41%.
* MID SLOPE........44-54%.
* 24 HR TREND......25% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING EAST 8 TO 13 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........EAST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN THE
LATE MORNING AND AFTERNOON.
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 3700-4700 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHEAST 10 TO 15 MPH IN
THE AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE
AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER........SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...60%.
* MIN TEMPERATURE....
* VALLEYS..........33-43.
* MID SLOPE........38-47.
* MAX HUMIDITY.......
* VALLEYS..........83-93%.
* MID SLOPE........73-83%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........WEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......1400-1900 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........FAIR.
THURSDAY
* SKY/WEATHER........SHOWERS LIKELY. SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...35%.
* MAX TEMPERATURE....
* VALLEYS..........55-63.
* MID SLOPE........49-59.
* MIN HUMIDITY.......
* VALLEYS..........44-54%.
* MID SLOPE........56-66%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING WEST 5 TO 10 MPH
LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 20 MPH
LATE IN THE AFTERNOON.
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 2600-3600 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
SHOWERS LIKELY IN THE EVENING, THEN CHANCE OF
SHOWERS AFTER MIDNIGHT. LOWS 28-38. WEST WINDS 9 TO 14 MPH
INCREASING TO 15 TO 25 MPH AFTER MIDNIGHT.
FRIDAY
CLEAR. HIGHS 53-63. LOWS 22-32. NORTH WINDS 10 TO 20 MPH.
SATURDAY THROUGH SUNDAY
CLEAR. HIGHS 56-66. LOWS 22-32. SLOPE
WINDS.
MONDAY THROUGH TUESDAY
CLEAR. HIGHS 58-68. LOWS 24-34.
NVZ421-211415-
SOUTHERN SIERRA FRONT INCLUDING ALPINE, NORTHERN MONO, SOUTHERN
LYON, AND WESTERN MINERAL COUNTIES-
355 PM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........26-36.
* MID SLOPE........39-49.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........76-86%.
* MID SLOPE........62-72%.
* 24 HR TREND......20% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO 35 MPH.
* MIXING HEIGHT......2400-3400 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER........CLOUDY. CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...50%.
* MAX TEMPERATURE....
* VALLEYS..........55-65.
* MID SLOPE........48-58.
* 24 HR TREND......5 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........46-56%.
* MID SLOPE........46-56%.
* 24 HR TREND......26% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING EAST 7 TO 12 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 3400-4400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHEAST 15 TO 20 MPH IN
THE AFTERNOON.
* VENTILATION........FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER........SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...50%.
* MIN TEMPERATURE....
* VALLEYS..........26-36.
* MID SLOPE........37-47.
* MAX HUMIDITY.......
* VALLEYS..........83-93%.
* MID SLOPE........75-85%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH. GUSTS TO 35 MPH UNTIL
EARLY MORNING.
* MIXING HEIGHT......1500-2000 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* 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...45%.
* MAX TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........42-52.
* MIN HUMIDITY.......
* VALLEYS..........52-62%.
* MID SLOPE........54-64%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN
THE MORNING.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 2700-3700 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST 10 TO 15 MPH IN THE
AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
SHOWERS LIKELY IN THE EVENING, THEN CHANCE OF
SHOWERS AFTER MIDNIGHT. LOWS 22-32. WEST WINDS 7 TO 12 MPH UNTIL
EARLY MORNING BECOMING DOWNSLOPE 2 TO 5 MPH.
FRIDAY
CLEAR. HIGHS 50-60. LOWS 17-27. NORTHWEST WINDS 10 TO
15 MPH.
SATURDAY THROUGH SUNDAY
CLEAR. HIGHS 56-66. LOWS 17-27. SLOPE
WINDS.
MONDAY THROUGH TUESDAY
CLEAR. HIGHS 57-67. LOWS 21-31.
CAZ272-211415-
GREATER LAKE TAHOE AND TRUCKEE AREA-
355 PM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........29-39.
* MID SLOPE........33-43.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........88-98%.
* MID SLOPE........71-81%.
* 24 HR TREND......35% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........EAST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
* MIXING HEIGHT......2800-3800 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....EAST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER........CLOUDY. CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...50%.
* MAX TEMPERATURE....
* VALLEYS..........53-59.
* MID SLOPE........47-57.
* 24 HR TREND......5 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........56-66%.
* MID SLOPE........57-67%.
* 24 HR TREND......35% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING EAST 10 TO 15 MPH IN THE
AFTERNOON. GUSTS TO 30 MPH IN THE LATE MORNING
AND AFTERNOON.
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 3100-4100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....EAST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER........SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........28-38.
* MID SLOPE........31-41.
* MAX HUMIDITY.......
* VALLEYS..........95-100%.
* MID SLOPE........94-100%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25
MPH SHIFTING TO THE NORTHWEST WITH GUSTS TO 25
MPH AFTER MIDNIGHT.
* MIXING HEIGHT......1100-1600 FT AGL DECREASING TO 600-1100 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....EAST 10 TO 15 MPH IN THE EVENING BECOMING
LIGHT.
* VENTILATION........MARGINAL.
THURSDAY
* 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...45%.
* MAX TEMPERATURE....
* VALLEYS..........46-52.
* MID SLOPE........40-50.
* MIN HUMIDITY.......
* VALLEYS..........71-81%.
* MID SLOPE........73-83%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING WEST 10 TO 15 MPH LATE IN
THE AFTERNOON. GUSTS TO 25 MPH LATE IN THE
AFTERNOON.
* MIXING HEIGHT......600-1100 FT AGL INCREASING TO 2500-3500 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........POOR INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
SHOWERS LIKELY IN THE EVENING, THEN CHANCE OF
SHOWERS AFTER MIDNIGHT. LOWS 24-34. DOWNSLOPE 2 TO 5 MPH BECOMING
WEST 9 TO 15 MPH.
FRIDAY
CLEAR. HIGHS 50-56. LOWS 17-27. NORTHEAST WINDS 10 TO
15 MPH.
SATURDAY
CLEAR. HIGHS 53-61. LOWS 17-27. SLOPE WINDS.
SUNDAY
CLEAR. HIGHS 54-62. LOWS 20-30. SLOPE WINDS.
MONDAY
CLEAR. HIGHS 53-61. LOWS 21-31.
TUESDAY
PARTLY CLOUDY. HIGHS 55-61.
NVZ423-211415-
WEST HUMBOLDT BASIN IN PERSHING COUNTY-
355 PM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS IN THE EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...10%.
* MIN TEMPERATURE....
* VALLEYS..........36-46.
* MID SLOPE........40-50.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........69-79%.
* MID SLOPE........47-57%.
* 24 HR TREND......26% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....EAST WINDS 7 TO 12 MPH IN THE EVENING BECOMING
DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........EAST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN THE
LATE EVENING AND OVERNIGHT.
* MIXING HEIGHT......3200-4200 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...10%.
* MAX TEMPERATURE....
* VALLEYS..........68-75.
* MID SLOPE........63-73.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........27-37%.
* MID SLOPE........31-41%.
* 24 HR TREND......14% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHEAST 5 TO 10
MPH LATE IN THE AFTERNOON.
* RIDGE TOP........SOUTHEAST WINDS 10 TO 15 MPH WITH GUSTS TO 30
MPH.
* MIXING HEIGHT......1000-1500 FT AGL INCREASING TO 4700-5700 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO VERY GOOD IN THE
AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER........SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
SHOWERS LIKELY.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........36-46.
* MID SLOPE........40-50.
* MAX HUMIDITY.......
* VALLEYS..........78-88%.
* MID SLOPE........62-72%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH. GUSTS TO 35 MPH
INCREASING TO 40 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......1700-2200 FT AGL DECREASING TO 700-1200 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* 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...30%.
* MAX TEMPERATURE....
* VALLEYS..........58-65.
* MID SLOPE........53-63.
* MIN HUMIDITY.......
* VALLEYS..........49-59%.
* MID SLOPE........53-63%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO 35 MPH.
* MIXING HEIGHT......600-1000 FT AGL INCREASING TO 2100-3100 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........POOR INCREASING TO FAIR IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
SHOWERS. LOWS 28-38. WEST WINDS 9 TO 17 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS. HIGHS 55-63. LOWS 20-30.
NORTHWEST WINDS 10 TO 15 MPH.
SATURDAY THROUGH SUNDAY
CLEAR. HIGHS 56-66. LOWS 20-30. SLOPE
WINDS.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. HIGHS 61-67. LOWS 24-34.
NVZ429-211415-
LAHONTAN BASIN INCLUDING CHURCHILL AND EASTERN MINERAL COUNTIES-
355 PM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY. CHANCE OF SHOWERS IN THE
EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...10%.
* MIN TEMPERATURE....
* VALLEYS..........36-46.
* MID SLOPE........40-50.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........77-87%.
* MID SLOPE........60-70%.
* 24 HR TREND......23% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....EAST WINDS 9 TO 14 MPH WITH GUSTS TO 25 MPH.
* RIDGE TOP........SOUTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH.
* MIXING HEIGHT......2900-3900 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH.
* VENTILATION........EXCELLENT DECREASING TO POOR AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...20%.
* MAX TEMPERATURE....
* VALLEYS..........62-72.
* MID SLOPE........59-69.
* 24 HR TREND......4 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........34-44%.
* MID SLOPE........36-46%.
* 24 HR TREND......19% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING EAST 9 TO 14 MPH
WITH GUSTS TO 30 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHEAST WINDS 10 TO 15 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......1300-1800 FT AGL INCREASING TO 4400-5400 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH INCREASING TO 15 TO 25
MPH IN THE AFTERNOON.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER........SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN SHOWERS
AFTER MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...50%.
* MIN TEMPERATURE....
* VALLEYS..........34-44.
* MID SLOPE........40-50.
* MAX HUMIDITY.......
* VALLEYS..........82-92%.
* MID SLOPE........72-82%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHEAST WINDS 7 TO 12 MPH IN THE EVENING
BECOMING DOWNSLOPE 2 TO 5 MPH. GUSTS TO 25
MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 45 MPH.
* MIXING HEIGHT......1500-2500 FT AGL DECREASING TO 700-1200 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO MARGINAL AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER........SHOWERS. SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...40%.
* MAX TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........49-59.
* MIN HUMIDITY.......
* VALLEYS..........53-63%.
* MID SLOPE........57-67%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........SOUTH WINDS 10 TO 15 MPH. GUSTS TO 45 MPH
DECREASING TO 30 MPH IN THE LATE MORNING AND
AFTERNOON.
* MIXING HEIGHT......700-1200 FT AGL INCREASING TO 2400-3400 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........MARGINAL INCREASING TO FAIR IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS 29-39. WEST
WINDS 9 TO 16 MPH.
FRIDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. HIGHS 52-62. LOWS 21-31.
NORTHWEST WINDS 10 TO 15 MPH.
SATURDAY THROUGH SUNDAY
CLEAR. HIGHS 55-65. LOWS 21-31. SLOPE
WINDS.
MONDAY THROUGH TUESDAY
CLEAR. HIGHS 59-69. LOWS 24-34.
CAZ270-278-NVZ458-211415-
SURPRISE VALLEY CALIFORNIA-EASTERN LASSEN COUNTY-
NORTHERN WASHOE COUNTY-
355 PM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........32-42.
* MID SLOPE........38-48.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........62-72%.
* MID SLOPE........48-58%.
* 24 HR TREND......13% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....EAST WINDS 7 TO 12 MPH WITH GUSTS TO 20 MPH IN
THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS BECOMING SOUTHEAST 10 TO 15 MPH
AFTER MIDNIGHT.
* MIXING HEIGHT......3300-4300 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....EAST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
* CHANCE OF THUNDER..10%.
* CHC WETTING RAIN...5%.
* MAX TEMPERATURE....
* VALLEYS..........62-72.
* MID SLOPE........60-68.
* 24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......
* VALLEYS..........30-40%.
* MID SLOPE........30-40%.
* 24 HR TREND......19% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHEAST 9 TO 14
MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHEAST WINDS 10 TO 15 MPH.
* MIXING HEIGHT......900-1400 FT AGL INCREASING TO 4300-5300 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHEAST 10 TO 20 MPH.
* VENTILATION........FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER........SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...55%.
* MIN TEMPERATURE....
* VALLEYS..........33-43.
* MID SLOPE........38-48.
* MAX HUMIDITY.......
* VALLEYS..........83-93%.
* MID SLOPE........74-84%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........NORTH WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN THE
LATE EVENING AND OVERNIGHT.
* MIXING HEIGHT......2000-3000 FT AGL DECREASING TO 900-1400 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....EAST 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
* CHANCE OF THUNDER..10%.
* CHC WETTING RAIN...40%.
* MAX TEMPERATURE....
* VALLEYS..........53-63.
* MID SLOPE........50-58.
* MIN HUMIDITY.......
* VALLEYS..........46-56%.
* MID SLOPE........54-64%.
* 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........SOUTHEAST WINDS 10 TO 15 MPH WITH GUSTS TO 20
MPH SHIFTING TO THE SOUTHWEST IN THE
AFTERNOON.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 2300-3300 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
SHOWERS LIKELY IN THE EVENING, THEN CHANCE OF
SHOWERS AFTER MIDNIGHT. LOWS 22-32. WEST WINDS 9 TO 14 MPH
INCREASING TO NORTHWEST 15 TO 25 MPH AFTER MIDNIGHT.
FRIDAY
CLEAR. HIGHS 52-62. LOWS 17-27. NORTH WINDS 10 TO 15 MPH.
SATURDAY
CLEAR. HIGHS 53-62. LOWS 17-27. SOUTHEAST WINDS 10 TO
15 MPH.
SUNDAY
PARTLY CLOUDY. HIGHS 55-65. LOWS 21-31. SLOPE WINDS.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. HIGHS 56-66. LOWS 23-33.
CAZ271-211415-
WESTERN LASSEN, EASTERN PLUMAS, AND EASTERN SIERRA COUNTIES-
355 PM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
EVENING.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...5%.
* MIN TEMPERATURE....
* VALLEYS..........27-37.
* MID SLOPE........38-48.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........72-82%.
* MID SLOPE........56-66%.
* 24 HR TREND......20% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS. GUSTS TO 20 MPH IN THE LATE EVENING
AND EARLY MORNING.
* MIXING HEIGHT......3400-4400 FT AGL IN THE EVENING THEN 200-500
FT AGL.
* TRANSPORT WINDS....EAST 10 TO 15 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF SHOWERS. SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...35%.
* MAX TEMPERATURE....
* VALLEYS..........59-69.
* MID SLOPE........57-65.
* 24 HR TREND......4 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........39-49%.
* MID SLOPE........39-49%.
* 24 HR TREND......25% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS. GUSTS TO 25 MPH IN THE AFTERNOON.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 3500-4500 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....EAST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER........SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
SHOWERS LIKELY.
* CHANCE OF THUNDER..20%.
* CHC WETTING RAIN...50%.
* MIN TEMPERATURE....
* VALLEYS..........27-37.
* MID SLOPE........37-47.
* MAX HUMIDITY.......
* VALLEYS..........90-100%.
* MID SLOPE........88-98%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........LIGHT WINDS. GUSTS TO 25 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......900-1400 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
* VENTILATION........FAIR.
THURSDAY
* SKY/WEATHER........CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
* CHANCE OF THUNDER..10%.
* CHC WETTING RAIN...40%.
* MAX TEMPERATURE....
* VALLEYS..........49-59.
* MID SLOPE........46-56.
* MIN HUMIDITY.......
* VALLEYS..........62-72%.
* MID SLOPE........63-73%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH. GUSTS TO 20 MPH LATE IN THE
AFTERNOON.
* RIDGE TOP........LIGHT WINDS BECOMING WEST 10 TO 15 MPH LATE IN
THE AFTERNOON.
* MIXING HEIGHT......600-1100 FT AGL INCREASING TO 2400-3400 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....WEST 10 TO 15 MPH.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
SHOWERS LIKELY IN THE EVENING, THEN CHANCE OF
SHOWERS AFTER MIDNIGHT. LOWS 20-30. DOWNSLOPE 2 TO 5 MPH BECOMING
WEST 8 TO 13 MPH AFTER MIDNIGHT, THEN BECOMING DOWNSLOPE 2 TO 5 MPH
IN THE MORNING.
FRIDAY
CLEAR. HIGHS 51-61. LOWS 14-24. NORTH WINDS 10 TO 15 MPH.
SATURDAY THROUGH SUNDAY
CLEAR. HIGHS 56-66. LOWS 14-24. SOUTH
WINDS 10 TO 15 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. HIGHS 56-66. LOWS 18-28.
CAZ274-211415-
SOUTHERN MONO COUNTY-
355 PM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY. CHANCE OF SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...10%.
* MIN TEMPERATURE....
* VALLEYS..........26-36.
* MID SLOPE........31-41.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......
* VALLEYS..........87-97%.
* MID SLOPE........75-85%.
* 24 HR TREND......20% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....SOUTHEAST WINDS 5 TO 10 MPH WITH GUSTS TO 25 MPH
IN THE EVENING BECOMING DOWNSLOPE 2 TO 5 MPH.
* RIDGE TOP........SOUTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO 35
MPH INCREASING TO SOUTH 20 TO 30 MPH WITH
GUSTS TO 45 MPH AFTER MIDNIGHT.
* MIXING HEIGHT......2000-3000 FT AGL DECREASING TO 600 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTHEAST 10 TO 20 MPH.
* VENTILATION........VERY GOOD DECREASING TO POOR AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER........SLIGHT 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...40%.
* MAX TEMPERATURE....
* VALLEYS..........50-60.
* MID SLOPE........46-56.
* 24 HR TREND......5 DEGREES COOLER.
* MIN HUMIDITY.......
* VALLEYS..........49-59%.
* MID SLOPE........54-64%.
* 24 HR TREND......23% WETTER.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH BECOMING SOUTHEAST 8 TO 13
MPH WITH GUSTS TO 20 MPH IN THE AFTERNOON.
* RIDGE TOP........SOUTHEAST WINDS 15 TO 25 MPH WITH GUSTS TO 40
MPH.
* MIXING HEIGHT......1200-1700 FT AGL INCREASING TO 3300-4300 FT
AGL IN THE AFTERNOON.
* TRANSPORT WINDS....SOUTHEAST 10 TO 15 MPH INCREASING TO 15 TO 25
MPH IN THE AFTERNOON.
* VENTILATION........GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER........SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
SHOWERS.
* CHANCE OF THUNDER..10%.
* CHC WETTING RAIN...60%.
* MIN TEMPERATURE....
* VALLEYS..........25-35.
* MID SLOPE........30-40.
* MAX HUMIDITY.......
* VALLEYS..........90-100%.
* MID SLOPE........82-92%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....DOWNSLOPE 2 TO 5 MPH. GUSTS TO 20 MPH IN THE
EVENING.
* RIDGE TOP........SOUTH WINDS 10 TO 20 MPH. GUSTS TO 50 MPH.
* MIXING HEIGHT......1400-1900 FT AGL DECREASING TO 900-1400 FT AGL
AFTER MIDNIGHT.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
* VENTILATION........GOOD DECREASING TO MARGINAL AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER........SHOWERS.
* CHANCE OF THUNDER..0%.
* CHC WETTING RAIN...45%.
* MAX TEMPERATURE....
* VALLEYS..........45-55.
* MID SLOPE........41-50.
* MIN HUMIDITY.......
* VALLEYS..........51-61%.
* MID SLOPE........59-69%.
* 20-FOOT WINDS......
* VALLEYS/SLOPE....UPSLOPE 4 TO 8 MPH.
* RIDGE TOP........LIGHT WINDS. GUSTS TO 30 MPH IN THE MORNING.
* MIXING HEIGHT......800-1300 FT AGL INCREASING TO 2500-3500 FT AGL
IN THE AFTERNOON.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH IN
THE AFTERNOON.
* VENTILATION........MARGINAL INCREASING TO GOOD IN THE AFTERNOON.
EXTENDED
THURSDAY NIGHT
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 21-31.
DOWNSLOPE 2 TO 5 MPH.
FRIDAY THROUGH SATURDAY
CLEAR. HIGHS 50-60. LOWS 19-29. SLOPE
WINDS.
SUNDAY
CLEAR. HIGHS 54-64. LOWS 21-31. SLOPE WINDS.
MONDAY THROUGH TUESDAY
CLEAR. HIGHS 54-64. LOWS 22-32.
.8 TO 14 DAY OUTLOOK FOR (WED OCT 28 THROUGH TUE NOV 3)
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
=
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